Vol. 5, Issue 3 (2017)
Components of genetic variation and graphical analysis in Indian mustard (Brassica juncea L. Czern & Coss.) under varying moisture regime
Author(s): Mukesh Bhakal, DK Gothwal and Ramavtar Choudhary
Abstract: Hayman diallel analysis was performed excluding reciprocals in Indian mustard. The experimental material consisted of 10 genetically diverse parents and their 45 F1’s and 45 F2’s which were evaluated under two environments namely E1 (normal) and E2 (moisture stress) in CRBD design with three replications during Rabi 2015-16. Observation were recorded on various quantitative characters viz; Observations were recorded on days to flowering, days to maturity, plant height (cm), primary branches per plant, length of main raceme (cm), number of siliqua on main raceme, number of seeds per siliqua, 1000-seed weight (g), seed yield per plant (g) and oil content (%). The additive dominance model was adequate for days to 50% flowering in E1F1 and length of main raceme in E1F2 only as indicated by non-significant difference of b Wr-Vr from unity but significant from zero. Analysis of components of variation suggested that recessive genes were more frequent than dominant genes for length of main raceme in E1F2 and except days to 50% flowering in E1F1. Symmetrical distribution of positive and negative genes were observed for length of main raceme, while asymmetrical proportions of positive and negative genes was observed for days to 50% flowering in E1F1. Graphical analysis reflected the over dominance and partial dominance for all the characters in both the generations and in both the environments except for plant height in E1F1 and oil content in E2F1 which reflected the complete dominance.
Pages: 527-534 | 887 Views 13 Downloads
How to cite this article:
Mukesh Bhakal, DK Gothwal, Ramavtar Choudhary. Components of genetic variation and graphical analysis in Indian mustard (Brassica juncea L. Czern & Coss.) under varying moisture regime. Int J Chem Stud 2017;5(3):527-534.