Studies on genetic components in Indian mustard (Brassica juncea L)
163 / 36
Authors
-
Kirti Singh
Department of Genetics and Plant Breeding, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur 208002, Uttar Pradesh, India
Author
-
Shweta
Department of Genetics and Plant Breeding, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur 208002, Uttar Pradesh, India
Author
-
Mahak Singh
Department of Genetics and Plant Breeding, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur 208002, Uttar Pradesh, India
Author
Keywords:
Brassica juncea, diallel, genetic advance, heritability, variabilityAbstract
The current study focused on Indian mustard (Brassica juncea L.) and aimed to investigate variations and induce variability through hybridization. Additionally, the study aimed to gather genetic information concerning specific yield
related attributes for selection in segregating generations. Seven promising genotypes, namely Azad Mahak, Surekha,
NDR 8501, PR-21, PR-20, Kranti, and Ashirwad, were carefully selected and subjected to controlled crosses in all
possible combinations, excluding reciprocals, under a diallel system, resulting in 28 treatments (comprising 7 parents
and 21 crosses). Statistical analysis of variance revealed significant differences in all these traits, prompting further
investigation using Hayman's approach, which indicated the presence of both additive and dominance gene effects
governing these characteristics. Furthermore, estimates for the genetic component of variance indicated significant
values for both additive and dominance components across all the measured traits. Notably, the degree of dominance
exhibited over-dominance for specific traits, including the length of the primary raceme, plant height, number of
secondary branches, average number of seeds per siliqua, oil content and seed yield per plant.
Downloads
