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应用生态学报 ›› 2001, Vol. ›› Issue (2): 226-228.

• 研究论文 • 上一篇    下一篇

光温条件对短光低温不育水稻育性转换的影响

陆燕鹏, 万邦惠, 陈雄辉, 彭海峰, 梁克勤   

  1. 华南农业大学, 广州510642
  • 收稿日期:2000-01-03 修回日期:2000-08-25 出版日期:2001-03-25
  • 通讯作者: 陆燕鹏,男,1972年生,讲师,博士.主要从事水稻杂种优势的研究与利用.发表研究论文多篇.
  • 基金资助:
    广东省自然科学基金(960423);广东省重点科技攻关资助项目(99B00901G)

Effect of photoperiod and temperature on fertility alteration of short photoperiod-low temperature induced male sterile rice

LU Yanpeng, WAN Banghui, CHEN Xionghui, PENG Haifeng, LIANG Keqin   

  1. South China Agricultural University, Guangzhou 510642
  • Received:2000-01-03 Revised:2000-08-25 Online:2001-03-25

摘要: 短光低温不育水稻是一类与长光高温不育水稻育性转换特性相反的新种质.通过对分期播种材料自然条件下的育性及人工短光处理后的育性比较分析表明,宜D1S的光敏期为第一苞分化期至第二次枝梗原基和小穗原基分化期(幼穗分化Ⅰ~Ⅲ期).在常温下光敏期适当的短日处理可使育性趋于不育,但在高温下光敏期短日不育效应被削弱.宜D1S的花粉育性在高、低温作用下育性均出现下降.根据高、低温影响育性的资料分析得到的敏感期基本一致,即花粉母细胞形成期至花粉内容物充实期(幼穗分化Ⅴ~Ⅶ期).

Abstract: Short photoperiod-low temperature induced male sterile rice is a new germplasm, whose fertility alteration characteristic is contrary to that of long photoperiod and high temperature induced male sterile rice.Compared with that of Yid1s sowed under natural conditions by stages,the fertility alteration of Yid1s was observed under simulated short photoperiod treatment. The results showed that the photoperiod-sensitive stage of Yid1s occurred from differentiation of rachis primordia (phase Ⅰ) to secondary rachis-branch and spikelet primordia (phase Ⅲ).The panicles induced by appropriate short daylight treatment at photoperiod-sensitive stage tended to be completely sterile under normal temperature,but the sterile effect was weakened under high temperature. The pollen fertility of Yid1s was reduced under high or low temperature. The temperature-sensitive stages of Yid1s based on the analysis of the effects of high and low temperature on fertility were basically identical,i.e.,from pollen mother cell formation (phase Ⅴ) to single nucleus (phase Ⅶ).

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