BEHAVIOUR OF FREE-PROLINE ACCUMULATION IN VARIOUS DROUGHT-RESISTANTE TYPE OF SOYBEAN CULTIVARS (GLYCINE. MAX)
Liu Lijun, Yin Tienfu, Xue Jin, Song yingsu, Wang Yizhi(The Soybean Research Institute, Heilongjiang Academy of Agricultural Sciences, Harbin)
This paper is the report of the behaviour of free-proline accumulation in various drought-resistance types of soybean cultivars under water-stress and non-stress condition in various growing periods. The results indicated that free-proline contents differed among soybean cultivars under non water stress condition and gradually increased along with growth and development from pod-setting to late pod-filling stage . The ability of free-proline accumulation in soybean cultivars was higher under water-stress than under non-water-stress and the difference was statistically significant . The ability of free-proline accumulation was different among various drought-resistante type of soybean cultivarsin different growing periods. The highest was in pod-setting stage.