SCREENING OF DROUGHT STRESS TOLERANCE IN SOYBEAN (GLYCINE MAX L.) CULTIVARSS.L. KHAPKE, S.L. LAWARE, R.K. AHER AND K.N. DHUMAL
Soybean (Glycine max L.) is topmost in the world for production of both oil seeds and edible oil. Proline accumulation, as a response to water stress induced by polyethylene glycol 6000, in 4 different cultivars of soybean was determined. The concentration of proline increased significantly in all the 4 cultivars with an increase in the degree of water stress. But the drought tolerant genotypes accumulated more proline than the susceptible ones. Similarly phenolic contents were also increased along with increased water stress level (0 to 8 bar). However, the photosynthetic pigments and RWC were highly reduced with increasing water stress in all the cultivars investigated.
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