Path and Genetic Divergence Analysis of Mustard [Brassica juncea (L.) Czern & Coss.] Genotypes

Abstract

The present investigation consisting of seeds of 72 genotypes with 3 check varieties (Varuna, Kranti, NDR-8501) were used for experimentation under Augmented Block Design in Indian mustard germplasm/genotypes was carried out during 2019-20 on the Student Instructional Farm Acharya Narendra Deva University of Agriculture & Technology Kumarganj Ayodhya (U.P.) India. The characters studies were Days to 50 % flowering, Days to maturity, Plant height (cm), Number of primary branches/plants, Number of secondary branches/plants, Length of main raceme (cm), Number of silique in main raceme, Number of seeds/siliquae, 1000-seed weight (g) and Seed yield/plant (g). The highest positive direct effect on seed yield per plant exhibited by 1000 seed weight (0.2512) followed by length of main raceme (0.2189), the highest positive indirect effect on seed yield per plant was exhibited length on main raceme (0.0477) via seed pre-silique fallowed by the number of siliquae on main raceme (0.0332) via secondary branches per plant. The maximum intra-cluster distance was estimated in case of Cluster VI (2.652) followed by cluster I (2.520), Cluster IV (2.352), cluster III (2.329), cluster VIII (2.148). The highest inter-cluster distance was observed between cluster IV and VI (4.417) followed by cluster III and VI (4.270), VI and VIII (4.251), cluster I and VII (4.156). The maximum cluster mean was found in cluster I (9.21) for seed yield per plant followed by cluster III (8.67) and cluster VII (8.50).