Morphological and Molecular diversity studies in Gossypium hirsutum
Cotton is one of the most important fibre crops of India. India is having highest cotton growing area however; its production per unit area is low and stagnant owing to several biotic and abiotic stresses. In order to increase productivity, high yielding, biotic and abiotic stress resistant hybrid...
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doaj-073b0ccd80564b318d5b015e0c2cf4e92020-11-25T01:28:39ZengIndian Society of Plant BreedersElectronic Journal of Plant Breeding0975-928X2019-09-011031317132110.5958/0975-928X.2019.00168.6Morphological and Molecular diversity studies in Gossypium hirsutumV. Udaya andRajesh S. PatilCotton is one of the most important fibre crops of India. India is having highest cotton growing area however; its production per unit area is low and stagnant owing to several biotic and abiotic stresses. In order to increase productivity, high yielding, biotic and abiotic stress resistant hybrid/variety need to be developed. Hence, an attempt was made to assess the relationship between heterosis and genetic diversity. Identifying the best genotype combinations for the development of commercial hybrids of cotton remains the main challenge to cotton breeders. Genetic diversity of thirteen parents and heterosis in their forty hybrids which were developed by crossing 8 elite Lines with 5 carefully selected Testers in L × T fashion were used to assess the relationship between heterosis and genetic diversity for eleven important yield and yield contributing traits and three fibre related traits in intra hirsutum cotton (Gossypium hirsutum L.). Diversity studies were conducted by using both Mahalanobis D2 statistic and by random 60 SSR markers, which inferred medium genetic diversity between parents. Correlation coefficient of genetic distance with F1 mean performance, mid, better parent heterosis and specific combining ability for all studied traits were statistically non-significant, indicating that prediction of heterosis for complex traits based on these two genetic diversity estimates is difficult.http://ejplantbreeding.org/index.php/EJPB/article/view/3142Genetic diversityMahalanobis D2 statisticSSR markerCorrelation coefficientHeterosis |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
V. Udaya and Rajesh S. Patil |
spellingShingle |
V. Udaya and Rajesh S. Patil Morphological and Molecular diversity studies in Gossypium hirsutum Electronic Journal of Plant Breeding Genetic diversity Mahalanobis D2 statistic SSR marker Correlation coefficient Heterosis |
author_facet |
V. Udaya and Rajesh S. Patil |
author_sort |
V. Udaya and |
title |
Morphological and Molecular diversity studies in Gossypium hirsutum |
title_short |
Morphological and Molecular diversity studies in Gossypium hirsutum |
title_full |
Morphological and Molecular diversity studies in Gossypium hirsutum |
title_fullStr |
Morphological and Molecular diversity studies in Gossypium hirsutum |
title_full_unstemmed |
Morphological and Molecular diversity studies in Gossypium hirsutum |
title_sort |
morphological and molecular diversity studies in gossypium hirsutum |
publisher |
Indian Society of Plant Breeders |
series |
Electronic Journal of Plant Breeding |
issn |
0975-928X |
publishDate |
2019-09-01 |
description |
Cotton is one of the most important fibre crops of India. India is having highest cotton growing area however; its production
per unit area is low and stagnant owing to several biotic and abiotic stresses. In order to increase productivity, high yielding,
biotic and abiotic stress resistant hybrid/variety need to be developed. Hence, an attempt was made to assess the relationship
between heterosis and genetic diversity. Identifying the best genotype combinations for the development of commercial
hybrids of cotton remains the main challenge to cotton breeders. Genetic diversity of thirteen parents and heterosis in their
forty hybrids which were developed by crossing 8 elite Lines with 5 carefully selected Testers in L × T fashion were used to
assess the relationship between heterosis and genetic diversity for eleven important yield and yield contributing traits and
three fibre related traits in intra hirsutum cotton (Gossypium hirsutum L.). Diversity studies were conducted by using both
Mahalanobis D2 statistic and by random 60 SSR markers, which inferred medium genetic diversity between parents.
Correlation coefficient of genetic distance with F1 mean performance, mid, better parent heterosis and specific combining
ability for all studied traits were statistically non-significant, indicating that prediction of heterosis for complex traits based
on these two genetic diversity estimates is difficult. |
topic |
Genetic diversity Mahalanobis D2 statistic SSR marker Correlation coefficient Heterosis |
url |
http://ejplantbreeding.org/index.php/EJPB/article/view/3142 |
work_keys_str_mv |
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