1Department of Oilseeds, Tamil Nadu Agricultural University (TNAU), Coimbatore - 641003
2Department of Plant Breeding and Genetics, Agricultural College & Research Institute, Tamil Nadu Agricultural University (TNAU), Madurai - 625104
*Email: ameenaprem@gmail.com
Online published on 31 December, 2014.
Two backcross (BC2F1) populations developed from a cross between low oleic inbreds viz., COSF 7B and CSFI 99 (as recurrent parents) and high oleic (HO 5–13) inbred (as donor parent) were studied to assess genetic variability and correlation among oil yield and its component traits. High heritability coupled with high genetic advance as per cent of mean (GAM) were observed by the traits viz., plant height, head diameter and seed yield per plant in backcros spopulation (BC2F1) of COSF 7B x HO 5–13. Hence selection for these traits in thiscross will be effective due to the presence of additive type of gene action. Oil yield per plant showed positive and significant correlation with volume weight, seed yield per plant and oil content in both backcrosses. Hence selection of these characters would contribute for the improvement of oil yield per plant in sunflower.
Sunflower, backcross, variability, correlation, oil yield
