Comparative Study on Organic Acids and Phenolic Acids in Root Exudates of Soybean Cultivars
Root exudates of three soybean cultivars were collected and concentrated under sand culture. The species and amount differences of organic acids and phenolic acids were compared. Result showed that the species and amount of organic acids in root exudates from susceptible cultivar Hefeng 25 (H25) were more and higher, while those from resistant cultivars Suinong10 (S10) and Kangxian2 (K2) were single and low. With the changes of growth stage, total organic acids in susceptible cultivar H25 reached peak value at flowering stage and then decreased. So did S10. But the total content of organic acids in root exudates from K2 at seed -filling stage was the highest. Two phenolic acids, which were p -hydrobenzoic acid and vanillic acid, were detected in root exudates from H25 in seedling stage, ρ-hydrobenzoic acid reached peak value at seed-filling stage, following with seedling stage and flowering stage with maturing stage the lowest value. Only p -hydrobenzoic acid was found in root exudates from the two resistant cultivars. Its content reached peak value at flowering stage at seed-filling stage, while that and seedling stage and maturing stage were the lowest.
国家科技期刊平台
NSTL
万方数据
维普
