Association studies with direct and indirect effects among different morpho-bio traits in Gossypium arboreum

• Main Author: Pooja, Omender Sangwan, S.R Pundir, Meenakshi Rathi* and Shivani Mandhania
• Format: Article
• Language: English
• Published: Indian Society of Plant Breeders 2021-03-01
• Series: Electronic Journal of Plant Breeding
• Subjects: phenotypic correlation; genotypic correlation; path coefficient; direct-indirect effects; seed cotton yield

The experiment was carried out at the Research Area of Cotton Section and Biochemistry Laboratory, Department of Genetics and Plant Breeding, CCSHAU, Hisar (Haryana, India) during kharif 2017-18. The observations were recorded for different morphological and biochemical characters to assess the association among the traits and to estimate the direct-indirect effects through path analysis. Seed cotton yield was found positively correlated with various traits; strongest among them were lint yield (0.954, 0.956), boll weight (0.742, 0.768), and the number of bolls per plant (0.771, 0.799) at both phenotypic and genotypic levels. Path coefficient analysis revealed that the highest direct effect is contributed by boll weight (1.198) followed by the number of bolls per plant (1.181) to the seed cotton yield. Thus these two traits play a major role in the selection of high yielding seed cotton genotypes.