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耐旱性鉴定和评价是培育优良耐旱玉米杂交种品种的基础。本研究通过对一组杂交种进行耐旱性指标评价分析发现,产量仍是衡量耐旱性强弱最重要的指标,而开花吐丝间隔期、株高等农艺指标在评价品种耐旱性时也具有重要的参考价值。产量指标中,种质耐旱指数(DTIg)也可用于评价品种耐旱性。根据DTIg对参试品种进行了五级耐旱性评价。
Identification and evaluation of drought tolerance is the basis for cultivating varieties of excellent drought-tolerant maize hybrids. In this study, we evaluated the drought tolerance index of a group of hybrids and found that the yield was still the most important index to measure the drought tolerance. However, when evaluating the drought tolerance of varieties, Has important reference value. Among the yield indicators, the drought tolerance index (DTIg) of germplasm can also be used to evaluate the drought tolerance of cultivars. According to DTIg five varieties of drought tolerance evaluation.