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目前,杂交水稻已在全国推广,但是,现有杂交水稻中某些组合对高温反应很敏感,特别是在生育的中、后期,遇到高温就会出现生理性黄叶早衰现象。据调查,杂交水稻的黄叶有一定的“地域性”。在湖南表现为湖区重于山区和丘陵区,邻近的省份也有类似的趋势。虽然引起黄叶的原因很复杂,但其中一个重要的外界因素是高温。我们1979年的工作已证明,一定的高温能引起杂交水稻叶绿体超微结构的破坏,从而使叶片失去叶绿素而发黄,光合
At present, hybrid rice has been popularized throughout the country. However, some combinations in existing hybrid rice are sensitive to high temperature reaction, especially in the middle and late stages of reproductive development. According to the survey, yellow rice hybrid rice has a certain “regional.” In Hunan, the performance of the Lake District is heavier than that of the mountainous and hilly areas. Similar trends are also found in the neighboring provinces. Although the cause of yellow leaves is complicated, one of the important external factors is high temperature. Our work in 1979 has shown that a certain amount of high temperature can cause damage to the ultrastructure of the chloroplast in hybrid rice, causing the leaf to lose its chlorophyll and turn yellow. Photosynthesis