Screening Identification Indexes of Drought Resistance at Flowering Stage in Rice Analysis on the Phenotypic Indexes for Identification of High Yield and Drought Resistance of Winter Wheat Varieties in Hebei province Evaluation and identification indexes selection on the drought resistance of broomcorn millet bred cultivars at seeding stage Identification and Evaluation of Drought Resistance of Naked Oat (Avena nuda L.) under PEG-6000 stress at Germination Stage Comprehensive Evaluation of Salt Tolerance and Screening Identification Indexes for Three Tree Species DNA barcoding identification of Ginseng Radix et Rhizoma and Panacis Quinquefolii Radix based on trnL-trnF sequences