Author(s):

T Joseph Raju, Shakuntala NM, Vijay Kumar K and Vikas K

Abstract: The seed traits like physical, physiological and biochemical are complex and knowledge on trait correlations would be helpful in knowing the relations among them in improving seed quality and breeding purposes. In this study, correlations among seed traits were studied and compared between five hybrids of sunflowers i.e., GK 202, KBSH 44, KBSH 53, RSFH 130 and RSFH 1887. Some previously published correlations in hybrids or varieties could be redetected and some disappeared, which supported the hypothesis that correlations in hybrids could be ‘weaker or incidental’ or stronger. Physical seed traits relationships suggest that germination, field emergence and speed of germination content can be improved by seed size (seed thickness, length breadth thickness ratio) traits and may be decreased through increase in bulk density. Reducing the protein content without affecting the other traits can able to increase the germination. As test weight is related to dehydrogenase activity, indirectly it plays a role in germination, dry weight, seedling vigour indexes as well as hull content. These traits are not correlated with bicohemical traits like electrical conductivity, catalase and peroxidase activity. The results obtained from correlation showed that the efficiency in the improving physiological status of hybrids in sunflower should increased through physical and biochemical seed traits.

Pages: 2039-2042  |  1031 Views  234 Downloads

Download (458KB)