Genetic Variability Studies in Safflower Germplasm (Carthamus tinctorius L.)
2015
Dambal, Guljar I | Patil, Rajesh S
Safflower (Carthamus tinctorius L.) an ancient crop is a member of the family Compositae or Asteraceae. The availability and utilization of genetic variability in a crop drives its improvement. The first place to look at is the germplasm collections in the crop as this is where vast genetic variability is usually available. The present result showed the analysis of variance for 12 quantitative characters studied, 8 characters exhibited significant values for varieties indicating that the variability among the accessions was significant. The traits were plant height, days to fifty per cent flowering, number of capitula per plant, number of seeds per capitulum, hull percentage, biological yield, seed yield per plant and capitulum diameter. A narrow difference between PCV and GCV were observed biological yield test weight, number of seeds per capitulum. High heritability coupled with high genetic advance as percent of mean, reflected importance of additive genetic variance for number of seeds per capitulum. It indicates that whatever variation occurred is mainly genetic and less influenced by the environment. Therefore, priority should be given for these traits during selection. Oil content had very low GCV, PCV, heritability and genetic advance as per cent mean. The present study thus proves that improvement of oil content is very difficult mainly because of its resilience to breeding efforts.
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