杂交水稻在自然高温胁迫下的耐热性研究

Influences of Natural High-temperature Stress on Heat Resistance of Rice

为了研究II优838的的耐高温特性,用II优838在内的10份水稻材料,通过分期播种和随机区组的方法,在自然高温区验证其耐高温的特性。结果表明,本试验期间的温度达到了对水稻材料耐温性检验的目的,在高温条件下II优838在所有水稻材料中结实率和小区产量都最高,并且叶片的净光合速率也最高。从而印证了其较好的耐热性。

In order to study the anti-heat feature of ⅡYou838,10 rice materials,including Ⅱ You838 were used to test the feature by adop^ng the method of interval sowing, and randomized block design. The result indicated that the temperature during the test period achieved the purpose of testing the anti-heat rice materials. Under high temperature, ⅡYou838 had the highest seed setting rate and production. Mean- while, net photosynthesis rate was also the highest. Based on this, the conclusion was draw thatⅡ You838 had a relatively good anti-heat feature.