中国水稻科学 ›› 2014, Vol. 28 ›› Issue (2): 155-166.DOI: 10.3969/j.issn.1001-7216.2014.02.007

• 研究报告 • 上一篇    下一篇

抽穗开花期高温胁迫对水稻花药、花粉粒及柱头生理特性的影响

张桂莲1,2,张顺堂1,肖浪涛3,唐文帮1,肖应辉1,陈立云1,*   

  1. 1湖南农业大学 农学院, 长沙 410128;2深圳市龙岗区农业科技推广中心博士后创新基地, 广东 深圳518118; 3湖南农业大学 植物激素与生长发育湖南省重点实验室,  长沙 410128;
  • 收稿日期:2013-05-30 修回日期:2013-11-24 出版日期:2014-03-10 发布日期:2014-03-10
  • 通讯作者: 陈立云1,*
  • 基金资助:

    国家自然科学基金资助项目(30900874);  湖南省自然科学基金资助项目(11JJ3026);湖南省科技计划博士后专项 (2012RS4037);湖南省教育厅青年基金项目(YB2009B023); 作物学开放基金资助项目(ZWKF201301)。

Effect of High Temperature Stress on Physiological Characteristics of Anther,Pollen and Stigma of Rice During Headingflowering Stage

ZHANG Guilian 1,2, ZHANG Shuntang 1 , XIAO Langtao 3 , TANG Wenbang 1 , XIAO Yinghui 1 , CHEN Liyun 1,*   

  1. 1College of Agronomy, Hunan Agricultural University, Changsha 410128, China; 2Postdoctoral Innovation Base of Agricultural Science and Technology Promotion Center of Longgang District, Shenzhen 518118, China; 3 Hunan Provincial Key Laboratory of Phytohormones and Growth Development,Hunan Agricultural University, Changsha 410128, China;
  • Received:2013-05-30 Revised:2013-11-24 Online:2014-03-10 Published:2014-03-10
  • Contact: CHEN Liyun1,*

摘要: 以6个耐热性差异较大的水稻重组自交系及其亲本996(热钝感)和4628(热敏感)为材料,于抽穗开花期在人工气候室进行高温处理,研究高温胁迫对耐热性不同水稻株系花药抗氧化酶活性、膜透性、可溶性糖含量、热稳定蛋白含量、花粉粒及柱头活力的影响。结果表明,高温胁迫下,花药超氧化物歧化酶(SOD)、过氧化物酶(POD)及过氧化氢酶(CAT)活性呈先上升后下降的趋势,耐高温株系花药的SOD、POD及CAT活性显著高于热敏感株系。与热敏感株系相比,高温下耐高温株系花药具有较高的热稳定蛋白含量、可溶性糖含量、较低的丙二醛(MDA)含量和相对电导率。高温下耐高温株系的花药开裂系数、柱头上花粉粒数、花粉活力和柱头活力显著高于热敏感株系。这表明,杂交后代可能遗传了亲本996的一些耐热性状。因此,花药抗氧化酶活性、膜透性、热稳定蛋白含量和花粉活力均可作为水稻耐热性鉴定指标。

关键词: 水稻重组自交系, 抽穗开花期, 高温胁迫, 花器官, 生理特性

Abstract: Six rice recombinant inbred lines with different heat tolerance and their parents, heat tolerant line 996 and heat sensitive line 4628 were treated with high temperature (9:00-17:00, 37℃; 17:00-9:00, 30℃) and optimal temperature (9:00-17:00, 30℃; 17:00-9:00, 25℃) in growth chambers. The effect of high temperature on antioxidant enzyme activities, membrane permeability,souble sugar content, heat stable protein content of anther, pollen grain and stigma viability were studied.The results showed the superoxide dismutase(SOD), catalase (CAT), peroxidase (POD) activities in anther increased obviously at early stage under high temperature stress, then decreased rapidly, the antioxidant enzyme activity of anther of heat tolerant lines was significantly higher than that of heat sensitive lines. Compared with heat sensitive lines, higher heat stable protein content and souble sugar content, lower malondialdehyde  (MDA) content and relative conductivity were found in anther of heat tolerant lines. The anther dehiscence coefficient, pollen grains number on the stigma,pollen viability and stigma viability of heat tolerant lines were significantly higher than those of heat sensitive lines. It showed that hybrids might inherit the heat tolerance from the parent 996.The antioxidant enzyme activity, membrane permeability, heat stable protein content of anther and pollen viability can be used as heat resistance identification indexes in rice.

Key words: rice, recombinant inbred lines; heading stage; high temperature stress, flower organ, physiological characteristics

中图分类号: