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用盆栽分期播种和人工气候箱等方法,研究了温度对光敏感核不育水稻(HPGMR)两个光周期反应的影响。两年的研究结果表明,温度对光照诱导HPGMR发育与育性转换均有重要影响。第二光周期反应要求光照长度较严格,是主导因子,但所需温度低于一定临界值,长光照仍不能诱导雄性不育;提高温度,可相对缩短临界光长。在长暗期中给予一定的光时和光强的光间断以诱导雄性不育的反应中,证明光强、光时和温度,三者有互作互补关系。在温度影响光照诱导不育的反应中,光期温度的作用可能大于暗期温度。初步探明,在武汉地区,农垦58S、双8—2S、26001S和25169S的诱导育性转换的近似临界低限温度及其在不同温度下的临界光长存在差异。
The effects of temperature on two photoperiodic responses of photoperiod sensitive genic male sterile rice (HPGMR) were studied by pot sowing and artificial climate chamber. The results of two years showed that temperature had an important influence on the light-induced HPGMR development and fertility conversion. The second photoperiod response requires a stricter light length, which is the dominant factor. However, when the required temperature is below a certain critical value, the long light can not induce male sterility. When the temperature is raised, the critical light length can be relatively shortened. In the long dark period to give a certain light and light intensity of the light to induce male sterility reaction, to prove light intensity, light and temperature, the three have complementary and mutually complementary relationship. The effect of photoperiod temperature may be greater than the dark-period temperature in the reaction of temperature-induced light-induced sterility. It was initially proved that the approximate critical lower limit temperature and the critical light length at different temperatures of Nongken 58S, Double 8-2S, 26001S and 25169S in Wuhan were different.