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中国农学通报 ›› 2014, Vol. 30 ›› Issue (18): 35-39.doi: 10.11924/j.issn.1000-6850.2013-2716

所属专题: 水稻

• 农学 农业基础科学 • 上一篇    下一篇

开花期高温胁迫对水稻花粉粒性状及结实率的影响

雷东阳   

  • 收稿日期:2013-10-17 修回日期:2013-11-18 出版日期:2014-06-25 发布日期:2014-06-25
  • 基金资助:
    国家自然科学基金面上项目“水稻两系不育系繁殖和制种基地气象决策支持系统的研究和应用”(31371714);高等学校博士学科点专项科研基金“稻米垩白度基因CD6的精细定位和克隆”(20124320120001)。

Effect of High Temperature Stress on Pollen Traits and Seed Setting Rate of Rice at Flowering Stage

  • Received:2013-10-17 Revised:2013-11-18 Online:2014-06-25 Published:2014-06-25

摘要: 为探明花期高温胁迫对水稻花器官及结实率的影响。利用人工气候箱在水稻抽穗开花期对特青及其渗入系YIL106进行高温处理,研究结果表明,高温胁迫下热敏感渗入系YIL106的花粉活力、花粉萌发率、柱头上花粉粒数、花药开裂系数和结实率降低幅度均大于耐热品种特青。表明高温胁迫下,水稻的花粉活力、花粉萌发率、柱头上花粉粒数、花药开裂系数、以及结实率都比常温条件下要低,且高温胁迫对热敏感品系的花粉粒性状及结实率影响更大。

关键词: 有机质, 有机质

Abstract: The experiments were carried out in growth clamber to investigate the effects of high temperature stress during heading and flowing period on pollen and seed setting characters using two rice lines including heat-tolerant line Teqing (TQ) and heat-sensitive line YIL106. This study showed that the stained pollen rate, the pollen germination rate and the pollen grains on the stigma, the coefficient of anther dehiscence and the seed setting rate of rice under high temperature stress were lower than those under conventional temperature condition, the decrease scope of YIL106 were higher than that of Teqing. In this study, the significant difference was found between Teqing and YIL106, indicating that YIL106 was more sensitive to heat than TQ.