Development and Characterization of SSR Markers in the Gossypium Barbadense Genome

Zhong, Wu; Yuan, Can; Chen, Zhengjie; Zhou, Yonghang; Chen, Siwei; Tang, Qingxia; Zhang, Chao; Gong, Yiyun; Yang, Zehu; Mao, Zhengxuan; Mu, Fangsheng; Ji, Peicheng

doi:10.21203/rs.3.rs-870780/v1

Cited by 3 publications

(2 citation statements)

References 32 publications

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“…Also, the results indicated that mean performance for most selected families differed; these results could be due to gene expression for these families; therefore, selection for adaptable families and higher than means for better parent and commercial variety well be a help to produce high yielding recombination and earlier to grow it often winter cropping without a decrease in yield. These results are in harmony with those previously reported [33,[46][47][48][49][50]. It appeared that most of the yield and its component traits were positive and either significant or highly significant correlated with each other, indicating that these traits are essential components of cotton yield.…”

Section: Discussionsupporting

confidence: 90%

Sensitivity of Cotton <em>Gossypium barbadense</em> L. to Various Selection Criteria for Yield, Yield Components, and Earliness Attributes

Aty¹,

Sorour²,

Kotb³

et al. 2022

Preprint

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Competition between cotton, winter, and summer crops is the greatest obstacle for plant breeders in Egypt. Breeders are thus seeking early maturing, high-yielding cultivars that are suited for planting following winter crops. This study was conducted during the 2016 and 2018 growing seasons at the Sakha agriculture research station, Egypt's agricultural research facility. This research used breeding material from the F2, F3, and F4 generations that resulted from crossing Giza 94 and Uzbekistan. During the 2016 growing season, the F2 population was cultivated, and the top 5% of the F2 population (75 plants) were chosen based on the selection criteria. In the summer of 2017, the F3 families were cultivated, and 5% of the superior F3 families were chosen to become the F4 fam-ilies, which were planted in the summer of 2018 at the single plant and bulk studies in a randomised full block design with three replications. The average performance of the characteristics boll weight, seed cotton yield, lint percentage, and lint index increased as generations passed from F2 to F4. In the meanwhile, the characteristic value of the first flower to open decreased, showing the accu-mulation of advantageous alleles. For all examined characteristics, the phenotypic coefficient of variance was greater than the genotypic coefficient of variation. In addition, the data demonstrated that heritability in a broad sense was greater in F4 populations than in F3 and F2 populations. With a few exceptions, the phenotypic and genotypic associations for all investigated characteristics were positive and very significant. According to the data, initial opening flowering and boll weight had a substantial impact on seed cotton output per feddan. In general, five superior families No. 9, 13, 18, 19, and 20 were chosen from the F4 population, which were more significant for yield and yield component than the commercial variety, and these genotypes may be promising for the breeding programme to develop new genotypes with superior yield.

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Section: Discussionsupporting

confidence: 90%

Sensitivity of Cotton <em>Gossypium barbadense</em> L. to Various Selection Criteria for Yield, Yield Components, and Earliness Attributes

Aty¹,

Sorour²,

Kotb³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…The main objective of any breeder is to get a high yield with acceptable fiber qualities, especially under normal conditions in general 9,10,25 ., and underwater deficit stress conditions in special 3,6,36,[51][52][53] .This work suggested Table 5. Means and their percent from the better parent of the superior four families scored by using two selection procedures for studied characters in the F 4 generation.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of genetic gains of some quantitative characters in Egyptian cotton cross (Giza 86 × Menoufi) under water deficit stress

El-Aty

Kamara

El-Moghazy

et al. 2022

Sci Rep

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This work was carried out to select cotton genotypes adapted to semi-arid climate conditions cultivated under irrigation for high yields and the standards of the fiber quality properties required by the textile industry. Also to determine the predicted and realized gains from different selection indices to improve some economic characters under water stress conditions. Except for lint percentage and Pressley index, F4 generation reduced PCV and GCV values for all studied characters due to reduction in genetic variability and heterozygosity due to different selection procedures that exhausted a significant part of variability. Except for fiber length and micronaire reading, mean performance in the F4 generation was revealed to be higher than those in the F3 generation for all studied characters. However, micronaire reading was lower (desirable) in F4 than F3 generation. Generally, genotypic correlations were higher than phenotypic correlations. Direct selection for lint index (Ped.3) was the most efficient in improving lint cotton yield/plant and bolls/plant. However, the multiplicative index involving all studied characters (I.5) exhibited the highest values for boll weight. Also, the Ped.2 index (direct selection for lint percentage) proved to be the most efficient in improving seed and lint indexes. Direct selection for lint cotton yield/plant (Ped.1) could produce the highest desirable values for lint percentage and seed per boll with a relatively reasonable yield. A selection index involving yield and its components (I.3) is recommended in improving uniformity index, fiber strength, and micronaire reading. The superior five families released from these indices in F4 generation exceeded the better parent for lint cotton yield/plant, bolls/plant, boll weight, seeds/boll, lint index, and reasonable fiber traits. These families could be continued to further generations as breeding material for developing water deficit tolerant genotypes.

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Genetic Insights and Breeding Implications: Enhancing Cotton Yield and Quality Through Biparental Selection

Sorour,

AbdalSalam,

Farag

et al. 2024

THE JAPS

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This study was performed in Egypt's Sakha Agriculture Research Station during the seasons 2015–2018 to study the efficiency of biparental progenies derived from inter-population random mating in F2 generation in a cotton cross. Intercrossing is allowed in cotton breeding populations. Although the best lines may include harmful alleles, thus early segregating generation recombination and hybridization are required. The F2 generation of the cotton cross (Giza70 TNB1), which obtained from Agriculture Research Center, Egypt, consisted of five male and eight female plants, was used to test biparental progeny from random interpopulation mating. About 28 and 24 families in BIPS1 and BIPS2 had their original parents were examined. All genotypes were assessed for agricultural and fiber qualities. The mean of families (BIPs2) was higher than BIPs1 for all measured metrics except lint yield, percentage, and uniformity ratio. BIPS2 families had more genotypic coefficients of variation (GCV) for features than BIPS1. Intercrossing affected correlation coefficients of BIPS1 and BIPS2 genotypes. Seed cotton yield and lint index genotypic correlations became considerable. Seed cotton yield estimated by seed index and first fruiting node location were altered from negative to positive. Among them, No.5, No.7, No.8, No.18, and No.19 had large yields and early ripening, as shown by their components. The top five families chosen for fiber length had gain values of 3.373% to 8.961% and 5.919 to 7.781% for fiber strength. The No.18 family exhibited good seed cotton production and fiber length. Intermating and self-pollination (BIPS2) may utilize non-additive gene effects and accumulate trait-influencing alleles. Continuing to select and evaluate families based on their large-scale reproductive performance will enhance the likelihood of producing genotypes with desired features. In conclusion, this study underscores the utility of continued selection based on discerned genetic parameters, genotypic correlations, and observed gains in facilitating the ongoing improvement of cotton breeding programs. By providing valuable insights into the intricacies of genetic variability and trait associations, this research holds implications not only for the advancement of cotton breeding practices but also for the broader agricultural landscape on both national and global scales. Keywords: Biparental, selection efficiency, correlated response, hybridization, self-pollination

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Development and Characterization of SSR Markers in the Gossypium Barbadense Genome

Cited by 3 publications

References 32 publications

Sensitivity of Cotton <em>Gossypium barbadense</em> L. to Various Selection Criteria for Yield, Yield Components, and Earliness Attributes

Sensitivity of Cotton <em>Gossypium barbadense</em> L. to Various Selection Criteria for Yield, Yield Components, and Earliness Attributes

Evaluation of genetic gains of some quantitative characters in Egyptian cotton cross (Giza 86 × Menoufi) under water deficit stress

Genetic Insights and Breeding Implications: Enhancing Cotton Yield and Quality Through Biparental Selection

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