Combining ability, heterosis, and genetic distance among nine elite American Pima cotton genotypes (Gossypium barbadense)

Zhang, J. F.; Abdelraheem, A.

doi:10.1007/s10681-017-2036-8

Cited by 13 publications

(13 citation statements)

References 24 publications

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“…However, we observed a consistent significant correlation between GD, MPH and BPH for seed cotton yield and lint yield at Alar, whereas the correlations were negative for boll number per plant (Table ). These results differed from those of Zhang and Abdelraheem (), who reported a non‐significant relationship between GD and MPH for other traits and for lint yield a significant negative correlation was determined. In addition, in the present study, a significant correlation between GD and MPH for boll weight at Anyang and Wuwei was observed in 2016.…”

Section: Discussioncontrasting

confidence: 99%

Using yield quantitative trait locus targeted SSR markers to study the relationship between genetic distance and yield heterosis in upland cotton (Gossypium hirsutum)

Shahzad

Guo

et al. 2018

Plant Breeding

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The objective of this study was to examine the relationship between heterosis and genetic distance in upland cotton (Gossypium hirsutum L.). Heterosis in the different environments was evaluated and the relationship between heterosis and genetic distance (GD) was determined based on SSR markers for yield quantitative trait loci (QTL). Yields of seed cotton and lint showed a linear relationship with mid‐parent heterosis (MPH) and better‐parent heterosis (BPH). The variation in heterosis for other traits and their correlation with GD may be due to environmental factors or the effort of QTLs tested in the present study may vary in different environments. The present findings provide a foundation for heterotic grouping of parental lines and breeding of new cotton hybrids with improved seed cotton yield. This study calls for more research with stable QTLs as well as advance molecular marker techniques may be used in predicting yield heterosis in a more precise and reliable manner.

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Section: Discussioncontrasting

confidence: 99%

Using yield quantitative trait locus targeted SSR markers to study the relationship between genetic distance and yield heterosis in upland cotton (Gossypium hirsutum)

Shahzad

Guo

et al. 2018

Plant Breeding

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“…Based on their conclusions, these authors used only ten hybrid combinations based on local Spanish varieties. Although the results can be contrasting based on the founding parents of the hybrids and molecular markers employed [79][80][81]. For fruit yield, Singh and Kumar [82] reported the highest heterosis (162.5%) over the better parent.…”

Section: Heterosis In Eggplantmentioning

confidence: 99%

Heterosis Breeding in Eggplant (Solanum melongena L.): Gains and Provocations

Kumar

Sharma

Jain

et al. 2020

Plants

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Heterosis (or hybrid vigor) results in a hybrid’s phenotypic superiority over its founder parents for quantitative and qualitative traits. Hybrid vigor is defined by mechanisms such as dominant complementation, over-dominance, and epistasis. Eggplant (Solanum melongena L.) is an essential vegetable crop and a good source of dietary minerals, vitamins, and anthocyanins, with a high oxygen radical absorbance capacity and low caloric value. Given the economic and nutritional significance of eggplants, breeding efforts focus on developing high-yielding varieties—mostly F1 hybrids—with important traits. Studies indicate the successful exploitation of heterosis in the eggplant for a considerable improvement with respect to quantitative traits. In this direction, estimating heterosis for yield-related traits could well be useful for examining the most beneficial hybrid mix with the exploitation of top-quality hybrid. This review examines the current perception of the breeding and molecular aspects of heterosis in eggplants and cites several studies describing the mechanisms. Rendering and combining recent genomics, epigenetic, proteomic, and metabolomics studies present new prospects towards the understanding of the regulatory events of heterosis involved in the evolution and the domestication of the eggplant ideotype.

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“…The identification of parents with good general combining ability (i.e., generally giving good hybrids), as well as specific combinations of parents that result in exceptionally good hybrids, allows breeders selecting parents for obtaining hybrids [ 25 – 27 ]. Among the available biometrical procedures for determining general combining ability (GCA) and specific combining ability (SCA), as well as the nature and magnitude of gene actions and heritability of traits, the diallel analysis proposed by [ 25 ] has been widely used in different types of crops [ 28 – 32 ]. In this analysis, GCA is due to additive effects and additive × additive interactions, while SCA to dominance effects and additive × dominant and dominant × dominant interactions [ 27 ].…”

Section: Introductionmentioning

confidence: 99%

Diallel genetic analysis for multiple traits in eggplant and assessment of genetic distances for predicting hybrids performance

et al. 2018

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Evaluation and prediction of the performance of hybrids is important in eggplant (Solanum melongena) breeding. A set of 10 morphologically highly diverse eggplant parents, including nine inbred S. melongena and one weedy S. insanum accessions, were intercrossed according to a half-diallel mating design without reciprocals to obtain 45 hybrids. Parents and hybrids were evaluated for 14 morphological and agronomic conventional descriptors and 14 fruit morphometric traits using Tomato Analyzer. Genetic distances among parents were estimated with 7,335 polymorphic SNP markers. Wide ranges of variation and significant differences were observed in the set of 55 genotypes for all traits, although the hybrids group had significantly higher vigour and yield than parents. General and specific combining abilities (GCA and SCA) were significant for most (GCA) or all (SCA) traits, although a wide variation was obtained for GCA/SCA ratios. Many relevant traits associated to vigour and yield had low GCA/SCA ratios and narrow-sense heritability (h2) values, while the reverse occurred for most fruit shape descriptors. Broad-sense heritability (H2) values were generally high, irrespective of GCA/SCA ratios. Significant correlations were found between traits related to size of leaf, flower and fruit, as well as among many fruit morphometric traits. Genetic distances (GD) among parents were coherent with their phylogenetic relationships, but few significant and generally low correlations were found between GD and hybrid means, heterosis or SCA. The results provide relevant information for developing appropriate strategies for parent selection and hybrid development in eggplant and suggest that GD among parents have limited value to predict hybrid performance in this crop.

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Combining ability, heterosis, and genetic distance among nine elite American Pima cotton genotypes (Gossypium barbadense)

Cited by 13 publications

References 24 publications

Using yield quantitative trait locus targeted SSR markers to study the relationship between genetic distance and yield heterosis in upland cotton (Gossypium hirsutum)

Using yield quantitative trait locus targeted SSR markers to study the relationship between genetic distance and yield heterosis in upland cotton (Gossypium hirsutum)

Heterosis Breeding in Eggplant (Solanum melongena L.): Gains and Provocations

Diallel genetic analysis for multiple traits in eggplant and assessment of genetic distances for predicting hybrids performance

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