Division of Plant Physiology, Indian Agricultural Research Institute, New Delhi, 110012
Statistical studies of some yield components of 22 cultivars of linseed grown under irrigated and unirrigated field conditions were undertaken in order to obtain values of phenotypic and environmental correlation coefficients. Eleven out of a total of 55 correlations were found to have significant environmental association under irrigated condition and four of these i.e. boll on main shoot v., seed/boll, days to flower v., number of secondary branches, non fertile bolls v., height at which branching appeared and seed weight per plant v., primary branches were negative. When this behaviour was studied under unirrigated condition, the only correlation i. e. between seed weight per plant v., primary branches per plant retained its sign. The results clearly highlight the important role, the environment plays on yield and their correlations.
