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Vol. 10, Issue 3 (2021)

Genetic variability studies in early segregation generation(F3) of intra-hirsutum cotton hybrids of Line x Tester crosses under the rain-fed situation

Author(s):
Suman Parre and Rajesh S Patil
Abstract:
Cotton (Gossypium hirsutum L.) is one of the significant fiber yielding crop of Malvaceae family. Though India ranks first in cotton production during the year 2020, most of the cultivated cotton is grown in rainfed regions. Further productivity, production per acre and quality of the cotton are to be improved. The contemporary study was conducted in selected F2 populations, F3 generation of intra-hirsutum cotton hybrids. Genetic variability parameters were studied. analysis of the experiment showed significant variation among the F3 lines. Phenotypic coefficient of variation (PCV) was recorded high for seed cotton yield per plant followed by the number of monopodia and stem diameter traits. A high genotypic coefficient (GCV) of variation was observed in the number of monopodia per plant followed by seed cotton yield per plant and stem diameter. Different traits such as shoot dry weight, root dry weight, root to shoot dry weight ratio and biomass showed significant variation among the genotypes. Population mean performance and progeny mean performance were studied and the top five populations and progenies for important traits pertaining to seed cotton yield. In the F3 generation, L5T3, L1T1, L3T2 and L2T1 (Line x Tester) have seed cotton yield higher when compared to checks High heritability and genetic advance portrays the true image of the trait for selection of lines in segregating generations to be advanced to higher generations as well as transgressive segregants.
Pages: 951-955  |  344 Views  150 Downloads


The Pharma Innovation Journal
How to cite this article:
Suman Parre, Rajesh S Patil. Genetic variability studies in early segregation generation(F3) of intra-hirsutum cotton hybrids of Line x Tester crosses under the rain-fed situation. Pharma Innovation 2021;10(3):951-955.

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