SYSTEMATIC AND QUANTITATIVE EVALUATION OF RICE DROUGHT TOLERANCE AND CONSTRUCTION OF HIGH THROUGHPUT SCREENING PLATFORM

The precision identification and evaluation of rice drought resistance always is the key problem for succession of drought resistance study and breeding. We found that grain yield-related traits of rice have ecological effect with soil moisture conditions. Therefore, gradient and quantitative water controlling (GQWC) experiment was carried out in order to study the evaluation system of rice drought tolerance. The results revealed that synthesis drought tolerance evaluation of multi-gradient and multi-trait is better than that of single-gradient. Under single-gradient condition, the result could not reveal integrated information of drought tolerance. According to the study, MG_MT_AUC_ MUL, MG_MT_AUC_LOG and MG_MT_AUC_MFSV were the best indexes for rice drought tolerance evaluation as complex indexes. Based on above results, we developed automatic irrigation system for rice pot experiment, which was used in rice drought tolerance evaluation. At present, we are try best to construct the intelligentized and high-throughput screening platform for rice drought tolerance identification and evaluation, to explore omnidistance automatic and intelligentized control equipment, application software, which would automatically record, transfer and storage data, calculate drought tolerance evaluation result and generate report.