Inheritance and Expression of Valuable Agronomic Traits In F₁ Hybrids of Colored Fiber Cotton (Gossypium Hirsutum L.) Under Different Water Regimes

Dilmurodova Mehrangiz Umid qizi; Nabiyev Saydig’ani Muxtorovich

Authors

Dilmurodova Mehrangiz Umid qizi Master's Student, National University of Uzbekistan, Tashkent, Uzbekistan
Nabiyev Saydig’ani Muxtorovich Doctor of Biological Sciences, Professor, Institute of Genetics and Experimental Plant Biology, Academy of Sciences of the Republic of Uzbekistan, Tashkent, Uzbekistan

Keywords:

Naturally colored cotton, diallel crossing, F₁ hybrids

Abstract

In this study, the inheritance of plant productivity, lint percentage, 1000-seed weight, and fiber length traits in naturally colored cotton samples, as well as their response to water deficit conditions, were investigated. Under optimal water supply conditions, the highest values of the main economically valuable traits were mainly observed in the white-fibered Sadaf variety, while the highest 1000-seed weight was recorded in the brown-fibered 011250 sample. In the F₁ hybrids obtained through diallel crossing, intermediate inheritance, positive and negative incomplete dominance, and in some cases overdominance were observed for most of the studied traits. Under simulated drought (water deficit) conditions, all parental forms and hybrid genotypes showed varying degrees of reduction in the studied traits. The obtained results are important for the selection of drought-tolerant and high-yielding cotton genotypes.

References

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Inheritance and Expression of Valuable Agronomic Traits In F₁ Hybrids of Colored Fiber Cotton (Gossypium Hirsutum L.) Under Different Water Regimes

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