Identification of drought resistance of Centrosema pubescens Benth at seedling stage

By spot experiment， the drought resistance of 20 Centrosema pubescens Benth at seedling stage was evaluated by means of drought stress-rehydration， and the blade wilting and recovery process after rehydration was observed， electrical conductivity rate（REC） ， proline（Pro） content， malondialdehyde（MDA） content， chlorophyll content， water content of leaves（WC）and soil water content were deterted. The results showed that， under drought stress， with the increase of stress time， REC and Pro content increased， while chlorophyll content， water content of leaves（WC）and soil water content decreased； MDA content firstly increased then decreased and chlorophyll content had no significant change. After rehydration， all these indicators regained their original state. According to the comprehensive evaluation of the Subordinate function analysis on indicators under drought stress on the 9th day， the following C. pubescens Benth had stronger stress resistance： CIAT5006， CIAT5627， 050319012， 020411050， 060306037.