中国稻米 ›› 2015, Vol. 21 ›› Issue (4): 142-146.DOI: 10.3969/j.issn.1006-8082.2015.04.032

• 专论与研究 • 上一篇    下一篇

不同抗旱剂对水稻生长发育及产量的影响

  1. 中国水稻研究所,杭州 310006
  • 出版日期:2015-07-20 发布日期:2015-07-20
  • 通讯作者: 朱德峰
  • 基金资助:

    公益性行业(农业)专项(201203031, 201203029);现代农业产业技术体系建设专项资金(CARS-01-26);浙江省自然科学基金(Y13C130013)

Effects of Different Polysaccharide Drought - resistant Agent on Growth and Yield of Rice

  • Online:2015-07-20 Published:2015-07-20

摘要: 以杂交籼稻N22、Q优6号和Ⅱ优838为材料,于水稻穗分化期进行干旱胁迫处理,研究外源喷施不同浓度多糖醇类抗旱剂对水稻生长发育及产量的影响。结果表明,喷施不同浓度多糖醇能不同程度提高水稻的产量,以喷施多醣醇A3效果最佳,产量最高;喷施多糖醇对产量的贡献主要在于稳定水稻有效穗数,增加每穗粒数和结实率;喷施多糖醇总体上能增加水稻的干物质量,保持稳定的株高和较高的茎蘖数以及维持一定的叶绿素含量,对水稻的生长发育具有一定的促进作用;同时发现,水稻对喷施多糖醇缓解干旱胁迫存在基因型差异。

关键词: 水稻, 干旱胁迫, 多醣醇, 产量, 生长发育

Abstract: The effects of spraying different concentration of polysaccharide drought-resistant agent on growth and yield of rice were studied, with indica rice N22, Q you6 and II you838 as materials, at spike differentiation stage of drought stress. The results showed that the effects of different concentration of polysaccharide could increase the yield of rice, the yield of A3 treatment are equal to the control treatment. The contribution of spraying polysaccharide on yield is mainly due to stable effective panicle number per plant, increase the number of grains per panicle and seed setting rate, spraying polysaccharide can increase the rice dry matter, maintain the stability of the plant height, higher tiller number, maintain the chlorophyll content, improve the growth and development of rice. At the same time, different rice were difference in the treatment.

Key words: rice, drought stress, polysaccharide, yield, growth and development

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