Effect of different temperatures on seed quality parameters during storage in Soybean (Glycine max (L) Merril)
Bharathi Y1 , Sujatha P1 , Pallavi M1 , Jhansi Rani K2 , Jagan mohan Rao P1 , Rajender Reddy M3 , Ramesh M1
Abstract:
Two popular cultivars of soybean JS335 and Basara were stored at four different temperatures at 150C (cold storage), 300C and 400C and ambient conditions. The seed quality parameters viz., per cent normal and abnormal seedlings, per cent dead seeds, moisture percentage, seedling vigour index-II and electrical conductivity were estimated at bi- monthly intervals over 8 months in two consecutive years. The seed stored at higher temperatures at 400C has recorded very low-quality parameters followed by the seed stored at 300C in both the varieties. The seed quality parameters of the seed stored at ambient and 300C were almost on par with each other in JS335 and Basara. The highest seed quality is maintained in the seed stored at cold storage conditions only. The highest positive correlation is observed between germination per cent and seedling vigour index-II and between dead seeds and electrical conductivity. The principal component analysis has shown that the biplots for PC2 and PC3 had revealed the germination percentage i.e., normal seedlings (28%) and seedling vigour index-II (33%) have contributed more towards the seed quality.