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作物学报 ›› 2014, Vol. 40 ›› Issue (10): 1872-1876.doi: 10.3724/SP.J.1006.2014.01872

• 研究简报 • 上一篇    下一篇

水稻第5节间长度与出穗促进率的相关性

李志新1,王美欢4,徐超飞3,李华军2,李晓方1,2,*   

  1. 1长江大学作物遗传育种研究所，湖北荆州 434025；2 广州南国农业有限公司，广东广州510000；3 深圳市金冠现代农业新技术有限公司，广东深圳518048；4 中国科学院华南植物研究所，广东广州510650
  • 收稿日期:2014-01-09 修回日期:2014-06-16 出版日期:2014-10-12 网络出版日期:2014-07-23
  • 通讯作者: 李晓方, E-mail: lixiaofang35@126.com, Tel:18665688895
  • 基金资助:

    本研究由国家公益性行业(农业)科研专项(201303008), 国家自然科学基金项目(31071482)和湖北省教育厅项目(Q20121212)资助。

Correlation between the Fifth Internode Length and Heading Acceleration Percentage in Rice

LI Zhi-Xin1,WANG Mei-Huan3,XU Chao-Fei3,LI Hua-Jun2,LI Xiao-Fang1,2,*   

  1. 1 The institute of Crop Genetic and Breeding of Yangtze University, Jingzhou 434025, China; 2 Guangzhou Nanguo Agriculture Ltd., Guangzhou 510000, China; 3 Shenzhen Golden-Crown Agriculture. Ltd., Shenzhen 518048, China; 4 South China Botanical Institute, Chinese Academy of Sciences, Guangzhou 510650, China
  • Received:2014-01-09 Revised:2014-06-16 Published:2014-10-12 Published online:2014-07-23
  • Contact: 李晓方, E-mail: lixiaofang35@126.com, Tel:18665688895

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摘要：

出穗促进率和株高变化是反映水稻品种光温生态响应的重要指标。能否在育种阶段采用相对容易识别的性状来判断水稻品种的生态响应能力，对广适性品种的选育具有重要意义。本文从12个水稻亲本聚合杂交后代选出的36个高代稳定自交系及其亲本共48份材料，在湖北荆州作中稻以及在广州作早稻和晚稻，研究不同生态条件下株高及各组成成分变化与出穗促进率的变化规律。结果表明，第5节间长度是株高成分中最容易受环境影响的部分，其在不同季节的变化与出穗促进率呈现极显著的正相关性，在早稻和中稻、中稻和晚稻、早稻和晚稻3种情况下，第5节间长度变化和出穗促进率之间的相关系数分别为0.37、0.52和0.49，均达到了极显著水平，偏相关系数分别为0.42、0.43和0.36，也都达到了极显著水平。说明第五节间长度容易受光温条件的影响，是生态响应变化的重要指标，越是敏感的材料响应越大，适应性越差。因此，不同环境条件下第五节间长度可用作判断水稻品种对光温条件的响应指标。

关键词: 水稻, 出穗促进率, 第五节间长度变化, 相关性, 广适性

Abstract:

Heading acceleration percentage and plant height are important indexes of rice light and temperature sensitivities, and directly decide the wide adaptability of rice varieties. How to use the legible traits to estimate the wide adaptability of rice varieties is a problem worthily studying during breeding stage. In this paper, we studied the relationship between the length of rice plant height and heading acceleration percentage using 48 materials including 12 parents and 36 stable inbred lines selected from 12 parents’ polymerization hybridization progeny, which were planted in Hubei Jingzhou as middle-season rice and in Guangzhou as early rice and late rice. The results indicated that the fifth internode length was the most easily influenced by environments. The length of the fifth internode had extremely significant positive correlation with heading acceleration percentage. In the three cases of early rice and middle-season rice, middle-season rice and late rice, early rice and late rice, the correlation coefficients between length of the fifth internode and heading acceleration percentage were 0.37, 0.52, and 0.49, respectively, and the partial correlation coefficients were 0.42, 0.43, and 0.36, respectively. The correlations all reached the extremely significant level. It showed that the fifth internode length is easily affected by temperature and light conditions, and could be used to preliminarily judge the light and temperature sensitivities of rice varieties.

Key words: Rice, Heading acceleration percentage, Length change of fifth internode, Correlation, Wide adaptability

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