Vol. 10, Issue 3 (2021)

Author(s):
Suman Parre and Rajesh S Patil

Abstract:
Cotton (Gossypium hirsutum L.) is an important fiber crop in India due to its many uses is considered white gold. Genetic variability studies among the parental lines assist us in the selection and pattern of crossing and deducing the gene action underlying the expression of different yield attributing traits under rain-fed situation as most of the cotton-growing areas in our country are rain-fed areas. The current study was performed at the agricultural research station Hebballi under the University of Agricultural Sciences Dharwad. Analysis of the experiment showed significant variation among different parental lines. Different genetic variability parameters, heritability, genetic advance, genotypic and phenotypic coefficient of variation. There is no significant variation for plant height(cm), number of monopodia, number of nodes, stem diameter and shoot dry weight and remaining all other traits studied showed variation. The highest GCV and PCV was observed in the case of Boll weight(g) followed by lint index(g). Study on heritability and genetic advance depicted that boll weight has high heritability followed by plant height. Genetic advance for plant height(cm) followed by biomass(g). There was significant variability among different parental lines for yield attributing trains under the rainfed situation. Selection of different parental lines to study the genetics of different traits can be done through this study.