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中国农学通报

中国农学通报 ›› 2011, Vol. 27 ›› Issue (33): 127-136.

所属专题： 水稻

• 农学 农业基础科学 • 上一篇    下一篇

寒地水稻抗氮胁迫能力的筛选研究

周通 王孝纯 王艳 张淑华 王贵强 周建朝   

  • 收稿日期:2011-05-31 修回日期:2011-09-03 出版日期:2011-12-25 发布日期:2011-12-25
  • 基金资助:

    国家科技支撑计划

Screening of Different Japonica Rice Germplasm Tolerance to Nitrogen Deficiency in Cold Region of China

  • Received:2011-05-31 Revised:2011-09-03 Online:2011-12-25 Published:2011-12-25

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摘要：

为了充分利用水稻自身遗传特性，减少寒地氮肥施用量，为抗低氮胁迫育种提供依据，采用土培盆栽法，对寒地粳稻110份不同基因型种质材料进行了抗低氮胁迫能力的研究。结果表明，不同基因型水稻种质材料对低氮胁迫的抗性差异显著，根据平均隶属函数值，筛选出了抗性强的材料6个，抗性弱的材料8个。分蘖期的单株绿叶数、单株分蘖数和收获期的稻草产量、有效分蘖数、穗长、单穗小穗数、穗粒数、穗粒重及稻谷产量性状对低氮胁迫反应敏感，可作为筛选各基因型水稻抗低氮胁迫能力的性状指标。

关键词: 航天搭载, 航天搭载, 诱变, 冬瓜

Abstract:

In order to use the hereditary properties of japonica rice, reduce N applying rate and supply a foundation in rice breeding programme, the resistance of japonica rice to N stress was investigated. 110 different japonica rice germplasms were used in a soil pot culture and a field plot trial respectively. The main results were showed as following: The difference of the resistant ability to nitrogen deficiency between each individual rice germplasms used in the experiment was significant. According to the average values of membership function, 6 nonsensitive and 8 sensitive japonica rice germplasms to nitrogen stress were selected. The green leaf number and tillers at tillering stage, and the characters included straw dry weight, valid tillers, panicle length, spikelet number per panicle, grains per panicle and grain yield at harvest stage were all sensitive to nitrogen deficiency. These agronomic characters can be used as the indexes in screening rice tolerance to nitrogen deficiency program.