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OPTIMIZATION OF WINTER WHEAT NUTRITION WITH ZERO TILLAGE TECHNOLOGY IN THE RAINFED ZONES OF SOUTHERN KAZAKHSTAN

N.O. TURGANBAYEV, D.A. SYDIK, S.B. KENENBAYEV, M.A. SYDYKOV, and A.T. KAZYBAYEVA

Citation: Turganbayev NO, Sydik DA, Kenenbayev SB, Sydykov MA, Kazybayeva AT (2023). Optimization of winter wheat nutrition with zero tillage technology in the rainfed zones of Southern Kazakhstan. SABRAO J. Breed. Genet. 55(5): 1593-1603. http://doi.org/10.54910/sabrao2023.55.5.13.

Summary

The promising research showcased the results of herbicides’ uses, considering the quantitative composition of weeds with zero tillage technology of winter wheat cultivation. It revealed that when treating wheat seeds with the growth stimulator Vimpel (0.5 l/t) and micro-fertilization with Oracle (1.0 l/t) simultaneously etching with the fungicide Bunker (0.4 l/t), as well as, early spring treatment of crops in the tillering phase of winter wheat with the same stimulator (Vimpel, 0.5 l/ha) and micro-fertilization (Oracle multicomplex, 2.0 l/ha) simultaneous with the herbicide “Ballerina” (0.5 l/ha) application, the number of preserved plants before harvesting was 286.1 pcs./m2, reaching a height of 88.9 cm, with a productive bushiness of 1.15 pcs., grains per spike (22.2), 1000-grain weight (34.8 g), and collected dry grains at a standard humidity (22.1 c/ha). It was also evident that the competitive productivity of winter wheat also emerged when treating wheat seeds with biological fertilizer Biobars–M (1.0 l/t), the crop at the tillering stage with Biobars–M (0.5 l/ha), and the earring phase (0.7 l/ha). Similarly, using growth stimulants Vimpel and micronutrient Oracle multicomplex enhanced the grain yield with reduced cost of production (USD 61.3–66.0/kg) compared with the control version (USD 78.6 /kg). On one hectare of winter wheat crop, the net income ranged from USD 289.55 to 443.56.

Winter wheat (Triticum aestivum L.), zero technology, growth stimulator, biofertilizers, herbicides, productive moisture, economic efficiency, grain yield, net income

In winter wheat, using growth regulators, micro- and biofertilizers significantly enhanced the yield variables and, eventually, the grain yield. In particular, applying growth stimulators combined with micro-fertilization increased grain yields by 2.0–2.1 times, giving winter wheat grain harvest of 1.4–2.2 t/ha, respectively.

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SABRAO Journal of Breeding and Genetics
55 (5) 1593-1603, 2023
http://doi.org/10.54910/sabrao2023.55.5.13
http://sabraojournal.org/
pISSN 1029-7073; eISSN 2224-8978

Date published: October 2023

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PALYNOLOGICAL DIVERSITY OF POLLEN MORPHOLOGY IN ENDEMIC NORTHERN IRAQI HYPERICUM SPECIES (HYPERICACEAE)

A.K. ALANBARI, M.A. AL-HADEETHI, S.S. AL-SHAMI, and N.T. SALMAN

Citation: Alanbari AK, Al-Hadeethi MA, Al-Shami SS, Salman T (2023). Palynological diversity of pollen morphology in endemic Northern Iraqi Hypericum species (Hypericaceae). SABRAO J. Breed. Genet. 55(5): 1587-1592. http://doi.org/10.54910/sabrao2023.55.5.12.

Summary

The presented research investigated the pollen morphology of endemic Iraqi Hypericum species. The study revealed phenotypic features of pollen grains in the polar and equatorial views and their quantitative and qualitative characteristics. The results showed that the pollen grains of the genus Hypericum were radially symmetrical and isopolar, and their apertures were simple and tricolporate, except the species H. davisii, distinguished as tetracolprate. Dividing the studied species based on pollen grain sizes comprised two groups. Small pollen grains with an average length of the equatorial view ranged between 10–16 μm in H. lysimachioides and H. vermiculare. Medium-sized pollen grains with an average extent between 17–26 μm emerged in the species, i.e., H. retusum, H. triquetrifolium, H. perforatum, H. lydium, H. tetrapterum, H. asperulium, H. scabrum, and H. davisii. Pollen grains, also divided according to the P/E ratio, had two main groups. The pollen grains were subprolate and spherical, with the exine sculpturing examined by a scanning electron microscope (SEM), and isolated into four groups: 1) microreticulate reticulum, including H. asperulium, H. lydium, and H. vermiculare, 2) perforate, i.e., H. retusum, H. scabrum, H. tetrapterum, and H. triquetrifolium, 3) psilate with H. perforatum and H. davisii, 4) and reticulate exine sculpturing in H. lysimachioides, all isolated from the rest of the species. SEM images showed the thickness of exine ranged from 0.5 to 2 μm. The topical study also added H. davisii as a new species with no previous records in Iraq. This pollen study added valuable data for taxonomy and suggested that it should proceed with its first-time registration in Iraq. The pertinent research could provide a taxonomical key for Hypericum species in Iraq.

Hypericum L., Hypericaceae, endemic Iraqi species, palynological diversity, pollen grains, SEM

A comparative palynological study for the endemic Iraqi Hypericum species by light microscopy (LM) and scanning electron microscopy (SEM) determined the shape and size of the pollen grains, which were subprolate and sph prolate with small and medium size. Additionally, the ornamentation on the exine were microreticulate, perforate, psilate, and reticulate. The thickness of the exine was 0.5–2 μm. The number and shapes of apertures provide useful taxonomic information to distinguish the species. H. davisii was a new addition, having no previous records in Iraq.

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SABRAO Journal of Breeding and Genetics
55 (5) 1587-1592, 2023
http://doi.org/10.54910/sabrao2023.55.5.12
http://sabraojournal.org/
pISSN 1029-7073; eISSN 2224-8978

Date published: October 2023

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IN SILICO MINING AND VALIDATION OF SIMPLE SEQUENCE REPEAT (SSR) MARKERS DERIVED FROM THE FRAGARIA X ANANASSA GENOME ASSEMBLY

V.H. ELEC, C.A.E. CADORNA, and J.D. REY

Citation: Elec VH, Cadorna CAE, Rey JD (2023). In silico mining and validation of simple sequence repeat (SSR) markers derived from the Fragaria x ananassa genome assembly. SABRAO J. Breed. Genet. 55(5): 1573-1586. http://doi.org/10.54910/sabrao2023.55.5.11.

Summary

Strawberry (Fragaria x ananassa Duchesne ex Rozier) is an economically important fruit crop grown commercially worldwide due to its known nutritional value. The demand for strawberries in the Philippines has been increasing but varietal development is slow due to the lack of genetic information on locally available germplasm. In addition, molecular marker resources for strawberries are limited. Here, we developed Simple Sequence Repeats (SSR) markers to characterize strawberries cultivated in tropical environments, particularly in the Philippines. In silico mining generated a total of 219,239 SSR markers, from which 160,025 unique markers were identified. Polymorphism scoring and the variation on the expected alleles resulting to the synthesis of the top 160 markers were validated using representative strawberry cultivars from the core collection. All 70 markers produced successful amplicons from all the genotypes, but only 67 markers displayed polymorphism. Using UPGMA, genetic similarities among the cultivars were calculated generating a dendrogram which categorized the strawberry cultivars into 3 groups. The grouping clearly showed the separation of the diploid Fragaria vesca from the octoploid F. x ananassa cultivars, considered as group 1. Furthermore, Groups 2 and 3 contained cultivars from different geographical origins (US, Japan, and North America). The eight novel markers developed and validated here can be added to the genetic marker resource for cultivar verification, assessment of genetic diversity, and most importantly, marker-assisted breeding.

In silico mining, Fragaria genome, Philippine strawberry cultivars, simple sequence repeats

In silico mining from F. x ananassa genome sequence generated a total of 160,025 unique markers from which a subset of 70 markers was validated and approximately 95.7% (67 markers) are polymorphic. These markers were able to discriminate representative strawberry cultivars from the core collection of the BSU breeding program. It can also be utilized to further characterize and fingerprint these sets of germplasm as a prerequisite for a successful breeding programs.

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SABRAO Journal of Breeding and Genetics
55 (5) 1573-1586, 2023
http://doi.org/10.54910/sabrao2023.55.5.11
http://sabraojournal.org/
pISSN 1029-7073; eISSN 2224-8978

Date published: October 2023

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SCIENTIFIC BASIS OF COTTON SEED GERMINATION IN THE CENTRAL REGION OF UZBEKISTAN

A. NARIMONOV, A. AZIMOV, N. YAKUBJANOVA, and J. SHAVKIEV

Citation: Narimonov A, Azimov A, Yakubjanova N, Shavkiev J (2023). Scientific basis of cotton seed germination in the Central Region of Uzbekistan. SABRAO J. Breed. Genet. 55(5): 1561-1572. http://doi.org/10.54910/sabrao2023.55.5.10.

Summary

The responses of cotton (Gossypium hirsutum L.) seeds to germination depend upon the point in the germination-through-emergence sequence at which seed environmental conditions conclude to promote germination and seedling development. Temperature and genotype can influence seedling vigor in upland cotton and help identify promising genotypes that could perform well under different temperature extremes. In the presented research, the nature of the development of cotton seeds largely depends on temperature conditions and the growing seasons, which provide information that determines their uniformity based on the thermal regime of germination. The physical and biological diversity of cotton seeds has close relations to the pattern of plant development and the influence of certain environmental factors on them. In the presented study, sowing seeds of three local cotton cultivars, AN-Bayaut-2, Tashkent-6, and Armugon-2, transpired on two dates (April 17 and May 10). The nature of cotton seeds’ development, largely dependent on temperature and growing season and on the thermal regime of their germination, showed different indicators. A discovery revealed that the germination of seeds decreased in areas with later-sown kernels. In terms of germination energy and other physiological functions, the best results were notable in seeds at the lower and middle stages of plant development. The cultivar AN-Bayaut-2 is adaptable to various environmental factors according to seed germination and vegetation period compared with other local cotton varieties, i.e., Tashkent-6 and Armugon-2.

Upland cotton (gossypium hirsutum l.), cottonseeds, seed germination, respiration intensity, productivity

The nature of the development of cotton seeds largely depends on temperature and the growing season. According to germination vigor and other physiological functions, the best plants resulted from the grains of the bolls at the lower and middle stages of the harvest. The research has also established that the variety AN-Bayaut-2 proved superior to the other two cultivars based on seed germination and adaptation to various environmental factors during the growing season.

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SABRAO Journal of Breeding and Genetics
55 (5) 1561-1572, 2023
http://doi.org/10.54910/sabrao2023.55.5.10
http://sabraojournal.org/
pISSN 1029-7073; eISSN 2224-8978

Date published: October 2023

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GENETIC PARAMETERS AND PRINCIPAL COMPONENT ANALYSIS FOR QUANTITATIVE TRAITS IN RICE (ORYZA SATIVA L.)

J.M. AL-KHAYRI and M.M. EL-MALKY

Citation: Al-Khayri JM, El-Malky MM (2023). Genetic parameters and principal component analysis for quantitative traits in rice (Oryza sativa L.). SABRAO J. Breed. Genet. 55(5): 1547-1560. http://doi.org/10.54910/sabrao2023.55.5.9.

Summary

Conventional breeding is vital in improving yield-related traits and developing high-yielding cultivars. In the presented study, an evaluation of 15 F1 hybrids compared them to their six parental genotypes for genetic variation of various traits. The results showed that the analysis of variance revealed significant (P ≤ 0.01) differences among the cross combinations and parental cultivars and among the parents and crosses. The mean sum of squares of parents vs. crosses also indicated substantial (P ≤ 0.01) for all the characteristics. The general (GCA) and specific combining ability (SCA) variances were significant (P ≤ 0.01) for all traits studied in the F1 generation. Three varieties, namely, Sakha108, Giza179, and Sakha109, were highly significantly positive for grain yield plant-1, which means these varieties can benefit as good combiners to transfer the said trait in the breeding program. In SCA, seven crosses were negative in plant height and a negative value was desirable to avoid lodging and suitable for mechanical harvesting; however, positive significant values are preferable in the rest of the traits. The results indicated that the best crosses for grain yield plant-1 and plant height were Sakha105 × Sakha102, Sakha105 × Sakha108, and Sakha108 × Sakha109. Conducting cluster analysis also exhibited the genotypes dividing into four groups. The first group included rice genotypes Sakha109 and Sakha108 alone. These cultivars, produced from a common parent Sakha101, could have genetic relations for three quantitative traits (flag leaf area, 1000-grain weight, and panicle weight). The second group, comprising Sakha 102 and Sakha 106, has a very similar genetic background because both cultivars share a common parent, Giza 177. In addition, these two rice cultivars had at par number of tillers plant-1, 1000-grain weight, and panicles plant-1. The third group included only Giza 179 belonging to Indica-Japonica varieties. A fourth group has Sakha 105 produced by different parents.

rice (Oryza sativa L.), breeding, combining ability, genetic variation, genetic potential, genotypic and phenotypic variances, heritability

The half-diallel method was for crossing between six parents of rice to produce 15 crosses. Three parents, namely, Sakha108, Sakha102, and Giza179, were suitable donors for some traits and could serve as better parents for use in breeding programs. Three crosses also gave a good result for grain yield plant-1 and plant height. PCA and cluster analysis studied the similarity through quantitative traits, providing results that the varieties produced from the same parents cluster in one group.

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SABRAO Journal of Breeding and Genetics
55 (5) 1547-1560, 2023
http://doi.org/10.54910/sabrao2023.55.5.9
http://sabraojournal.org/
pISSN 1029-7073; eISSN 2224-8978

Date published: October 2023

« Back to main page of SABRAO Journal of Breeding and Genetics Vol. 55 No. 5

PHYSICOCHEMICAL PROPERTIES AND EATING QUALITY OF PROMISING CROSSBRED UPLAND RICE LINES DEVELOPED FROM SUPERIOR PARENTAL GENOTYPES

E.S. MULYANINGSIH, A.F. DEVI, Y.G.D. ANGGRAHENI, Y.B. PARADISA, D. PRIADI, S. INDRAYANI, Y. SULISTYOWATI, A.Y. PERDANI, F. NURO, E.B.M. ADI, and P. DESWINA

Citation: Mulyaningsih ES, Devi AF, Anggraheni YGD, Paradisa YB, Priadi D, Indrayani S, Sulistyowati Y, Perdani AY, Nuro F, Adi EBM, Deswina P (2023). Physicochemical properties and eating quality of promising crossbred upland rice lines developed from superior parental genotypes. SABRAO J. Breed. Genet. 55(5): 1536-1546. http://doi.org/10.54910/sabrao2023.55.5.8.

Summary

The ultimate objective of breeding is to produce high-yielding cultivars that are fascinating to the farming community and end users, allowing for easy marketing. Therefore, it is crucial to conduct various tests on milling quality, physicochemical properties, and eating quality to determine the overall rice quality and evaluate the response of potential consumers. The presented study sought the complete rice quality and the consumer acceptance of 12 upland rice lines derived from superior parental genotypes. This research conducted in 2019 performed milling and eating quality assessments on milled and cooked rice, respectively. The milling quality analysis revealed that lines L-04, L-05, and L-06 produced middle-length grains, while others produced full-length grains. Rice from lines L-02, L-09, and L-12 were slender, while the rest were medium-shape. All upland rice lines also met the national standard (SNI 6128-2015) for milling degree (85%–100%), moisture content (9.85%–11.30%), chalky rice (0.06%–1.59%), and yellow rice (0.21%–1.77%). Lines L-03 and L-05 met the Medium-I quality standard with head rice recovery (HRR) values of 84.15% and 84.76%, respectively. However, lines L-01 and L-02 met the Medium-III standard with HRR values of 66.24% and 66.39%, separately. Principal Component Analysis (PCA) revealed four principal physicochemical characteristics, i.e., degree of milling, length, width, and HRR. Partial Least Squares Regression (PLSR) analysis displayed the overall liking as determined by the interaction of four descriptive factors, mostly taste and texture. Cooked rice of line L-12 (cross of cv. Inpago-8 × B11930F-TB-2) was the most liked compared with other cooked rice samples.

milling quality, eating quality, hedonic, PCA, PLSR

Upland rice production through cross-breeding of superior parental genotypes hopes rice meets consumer acceptance criteria and the Indonesian National Standard for Quality (SNI 6128–2015). PCA assisted in the clustering of the 12 resultant crossbred lines based on the physicochemical properties of their rice crops. PLSR analysis helped to reveal the correlation between the sensory descriptive scores and overall liking of the cooked rice from the 12 lines.

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SABRAO Journal of Breeding and Genetics
55 (5) 1536-1546, 2023
http://doi.org/10.54910/sabrao2023.55.5.8
http://sabraojournal.org/
pISSN 1029-7073; eISSN 2224-8978

Date published: October 2023

« Back to main page of SABRAO Journal of Breeding and Genetics Vol. 55 No. 5

GENETIC AND PATH COEFFICIENT ANALYSES OF QUALITY-RELATED TRAITS OF OAT (AVENA SATIVA L.) WITH POTASSIUM APPLICATION

S.A. HASAN, R.M. ABDULLAH, M.B. HANOON, and M.K. SAHI

Citation: Hasan SA, Abdullah RM, Hanoon MB, Sahi MK (2023). Genetic and path coefficient analyses of qualityrelated traits of oat (Avena sativa L.) with potassium application. SABRAO J. Breed. Genet. 55(5): 1526-1535. http://doi.org/10.54910/sabrao2023.55.5.7.

Summary

The experiment on oats transpired during the crop season 2021–2022 according to the split-plot design system of the full randomized complete block design (RCBD) with three replicates. The potassium element was in the chief ingredients in three concentrations (0, 10, and 20 g L-1). The genetic structures, secondary pieces, and results showed that the genetic appearance and environmental conditions under the three concentrations were positive and significant in all qualities. The natural and ecological manifestation analyses in laboratories showed complete, high, medium, and indirect effects in all features under study, with a varying percentage between spraying concentrations. With potassium, the qualities indicated a positive and valuable association with the raw protein of the grain summary of the plant at all levels and had notable indirect effects through some other characteristics.

Oat (Avena sativa L.), genetic features, correlation, path analysis

In the phenotypic and genetic correlations, the percentage (%) of ash had a desirable, positive, and significant association at the level of probability of 1% with the characteristics of crude fiber (%), soluble carbohydrates, and moisture percentage of all concentrations under study, yet was excessive in phenotypic associations (0.6403, 0.4874, 0.6171, 0.7781, 0.8885, 0.6613, 0.7362, 0.6193, and 0.7439); but the genetic associations, it reached 0.7399, 0.545, 0.6226, 0.8432, 1.0789, 0.6418, 0.7877, 0.9797, and 0.8561. However, the environmental correlation coefficients did not have a significant effect.

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SABRAO Journal of Breeding and Genetics
55 (5) 1526-1535, 2023
http://doi.org/10.54910/sabrao2023.55.5.7
http://sabraojournal.org/
pISSN 1029-7073; eISSN 2224-8978

Date published: October 2023

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AEGILOPS L. GENETIC DIVERSITY IN SOUTHWESTERN REGION OF UZBEKISTAN

I. DJABBAROV, F. SOBIROV, T. BOZOROV, K. TURAKULOV, and S. BABOEV

Citation: Djabbarov I, Sobirov F, Bozorov T, Turakulov K, Baboev S (2023). Aegilops L. genetic diversity in Southwestern Region of Uzbekistan. SABRAO J. Breed. Genet. 55(5): 1510-1525. http://doi.org/10.54910/sabrao2023.55.5.6.

Summary

As wheat donors, wild species of the genus Aegilops L. play a vital role in practical breeding to improve wheat production because of their strong relationship and wide genetic diversity. Using nine simple sequence repeat (SSR) markers helped assess the genetic diversity in 96 collected samples of four species belonging to the genus Aegilops, i.e., Aegilops tauschii Coss (D), Ae. cylindrica Host (CD), Ae. crassa Boiss (DDM), and Ae. triuncialis L. (UC). The said collection came from 21 sites of various expeditions located in three regions of Southwestern Uzbekistan (Samarkand, Urgut, Kitab, and Shakhrisabz regions). Generally, 102 distinct alleles were found, with an average of 11.33 alleles per primer. The total number of species-specific amplicons was 35. The polymorphism detected varied from 28.6% (for the WSP107 primer) to 77.0% (for the WSP130 and WSP192 primers). The mean values of polymorphism information content (PIC) and expected heterozygosity (Ho) for all samples were 0.675 and 0.527, respectively. Based on nine SSR markers, on average, the genetic distance indices (GD) varied from 0.63 to 0.77. The highest genetic similarity (GD = 0.77) recorded occurred between the species Ae. crassa and Ae. cylindrica, whereas the least (GD = 0.48), between Ae. cylindrica and Ae. triuncialis with their taxonomic classification. Genus Aegilops samples from the same region often attain an identical subgrouping, which might be due to relatedness by genetic parameters. The gene pool of native species of the genus Aegilops from the Southwestern region of Uzbekistan may provide suitable alleles for wheat improvement and adaptation in the future.

Aegilops L., Ae. tauschii, Ae. crassa, Ae. cylindrica, Ae. triuncialis, genetic diversity, Dgenome, SSR primers

Results revealed from nine SSR markers a marker WSP513 was the most polymorphic. In the genus Aegilops L., the species Ae. tauschii showed the highest genetic diversity, and samples collected from Khazraty Bashi (21) enunciated the foremost polymorphism among the studied regions.

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SABRAO Journal of Breeding and Genetics
55 (5) 1510-1525, 2023
http://doi.org/10.54910/sabrao2023.55.5.6
http://sabraojournal.org/
pISSN 1029-7073; eISSN 2224-8978

Date published: October 2023

« Back to main page of SABRAO Journal of Breeding and Genetics Vol. 55 No. 5

ROLE OF BIOTECHNOLOGY IN FOOD SECURITY: A REVIEW

F.O. ARECHE, A.H. GONDAL, L.A. SUMARRIVA-BUSTINZA, N.O. ZELA-PAYI, J.M. SUMARRIVA-BUSTINZA, R.B. OSCANOA-LEÓN, A.F. CALCINA-SOTELO, M.C.T.T.D. AGUILAR, E.R. ACOSTA-LOPEZ, J.A. JULCAHUANGA-DOMINGUEZ, D.D.C. FLORES, M.A.C. HUAYAPA, E.M.F. DONAYRE, A.R. RODRIGUEZ, Z.L.D.L. CRUZ, C.W.T. HUAMAN, and L.D.M. PERALES

Citation: Areche FO, Gondal AH, Sumarriva-Bustinza LA, Zela-Payi NO, Sumarriva-Hustinza IM, Oscanoa-León RH, Calcina-Sotelo AF, Anguilar MCTTD, Lopez ERA, Julcahuanga-Dominguez IA, Flores DDC, Huayapa MAC, Donayre EMF, Rodriguez AR, Cruz ZLDL, Huaman CWT, Gamarra FBL (2023). Role of biotechnology in food security: A review. SABRAO J. Breed. Genet. 55(5): 1496-1509. http://doi.org/10.54910/sabrao2023.55.5.5.

Summary

One of the most serious issues confronting the global food system is the wastage of approximately one-third of food at various points throughout the supply chain due to environmental and economic factors. Declines in production and food quality deterioration are concerns due to less awareness of the farming community and end users about the advanced technologies. Therefore, scientists face to develop cutting-edge technology to solve these problems and feed the bulging population to prevent starvation. Genetic engineering (GE) techniques can aid in several contexts to boost crop yields and quality. Biotechnology, genetic modification, and recombinant (r) deoxyribonucleic acid (DNA) technologies are significantly beneficial in pursuing chief progress in food production and supply. This latest literature review illustrates the recent advances in GE, their sources, current trends, and future. GE foods from animals, microbes, and crop plants have altered DNA and introduced modified genetic characteristics. Genetically modified organisms (GMOs) are vital parts of the industrial food system, and most packaged foods contain GMO ingredients that received engineering for resistance to pesticides and herbicides. Several issues raise red flags concerning GMOs, including safety, effects on the environment, and ineffective usage of pesticides. Many people are anxious about GMOs; however, most do not understand the problems.

biotechnology and genetic engineering, food security, less crop production, food quality, environmental factors, advanced technologies, people’s awareness

Globally, scientists are trying to manage food waste in a better way to lessen poverty. The presented review shed light on advanced breeding techniques like using GMOs, biotechnology, genetic modification, and recombinant (r) deoxyribonucleic acid (DNA) to improve crop yield sufficient to feed the community and prevent starvation.

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SABRAO Journal of Breeding and Genetics
55 (5) 1496-1509, 2023
http://doi.org/10.54910/sabrao2023.55.5.5
http://sabraojournal.org/
pISSN 1029-7073; eISSN 2224-8978

Date published: October 2023

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SPECIES DIVERSITY AND STRUCTURE OF THE SAXICOLOUS FLORAL COMPLEX IN THE AKTOBE FLORISTIC DISTRICT

S. AIPEISOVA, N. UTARBAYEVA, E. KAZKEEV, M. AGADIYEVA, A. BERKALIYEVA, A. BAUBEKOVA, B. ALZHANOVA, and G. KAISAGALIYEVA

Citation: Aipeisova S, Utarbayeva N, Kazkeev E, Agadiyeva M, Berkaliyeva A, Baubekova A, Alzhanova B, Kaisagaliyeva G (2023). Species diversity and structure of the saxicolous floral complex in the Aktobe floristic district. SABRAO J. Breed. Genet. 55(5): 1486-1495. http://doi.org/10.54910/sabrao2023.55.5.4.

Summary

The study of the Aktobe floristic district is a relevant task for assessing anthropogenic factors’ impacts on the flora of the steppe zone and developing measures to reduce the adverse effects of mining, metallurgical, and oil and gas facilities on the biodiversity of plant communities. The timely study evaluated the species composition and analyzed the saxicolous floral complex of the Aktobe floristic district, one of the most fascinating complexes based on florogenetics. The saxicolous complex flora comprised 219 species belonging to 119 genera and 39 families. However, the 10 leading families of the conglomerate manage 75.0% of the species composition of the saxicolous complex. Previous validations revealed that the saxicolous floral complex features have dominant families of Caryophyllaceae, Boraginaceae, and Chenopodiaceae and a more significant role for the Rosaceae and Scrophulariaceae. The saxicolous complex specificity has demonstrated the genera Potentilla and Centaurea as 2nd and 3rd position holders, respectively, and the presence of the genera Orobanche, Lappula, Atraphaxis, and Allium as the leading genera; however, they are unregistered among the other floral complexes. The analysis of geographical habitat types has shown that the Black Sea/Kazakhstan, Volga/Kazakhstan, and Eastern ancient Mediterranean habitat types are predominantly characteristic of the saxicolous floral complex. Twelve endemic species have also received recognition, assembling 60% of the endemic flora. Based on the analysis of species habitat, its ecological and biological features, and paleobotanical material available in literature sources, researchers have identified two groups of miscellaneous plants (Neogene and Quaternary) with their ages and endemic plants. Data also indicated the formation of the chief autochthonous core of the flora in the Pleiocene-Holocene.

Flora, floristic complex, life forms, habitat, disjunction, relic, endemic plant

The study and analysis of species composition in the saxicolous floral complex of the Aktobe Floristic District identified 12 endemic species, which generally comprised 60% of the endemic flora. Observations of the heterogeneity and heterochronism of the florogenesis processes also transpired based on the analysis of habitats, the phenomenon of disjunction, and the study of relics and endemic plants.

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SABRAO Journal of Breeding and Genetics
55 (5) 1486-1495, 2023
http://doi.org/10.54910/sabrao2023.55.5.4
http://sabraojournal.org/
pISSN 1029-7073; eISSN 2224-8978

Date published: October 2023

« Back to main page of SABRAO Journal of Breeding and Genetics Vol. 55 No. 5