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作物学报 ›› 2011, Vol. 37 ›› Issue (10): 1711-1723.doi: 10.3724/SP.J.1006.2011.01711

• 作物遗传育种·种质资源·分子遗传学 •    下一篇

超级稻协优9308衍生群体根系与地上部重要农艺性状的相关性研究

梁永书，占小登，高志强，林泽川，沈希宏，曹立勇*，程式华*   

  1. 中国水稻研究所 / 水稻生物学国家重点实验室 / 国家水稻改良中心, 浙江杭州310006
  • 收稿日期:2011-02-18 修回日期:2011-05-25 出版日期:2011-10-12 网络出版日期:2011-07-28
  • 通讯作者: 曹立勇, E-mail: caolycgf@mail.hz.zj.cn; 程式华, shcheng@mail.hz.zj.cn
  • 基金资助:

    本研究由国家自然科学基金项目(31071398)和农业部超级稻研究专项(2010-3)资助。

Analysis on Phenotypic Relationship between Roots and Important Shoot Agronomic Traits Using a RIL and Two Derived Backcross Populations of Super Rice Xieyou 9308

LIANG Yong-Shu,ZHAN Xiao-Deng,GAO Zhi-Qiang,LIN Ze-Chuan,SHEN Xi-Hong,CAO Li-Yong*,CHENG Shi-Hua*   

  1. State Key Laboratory of Rice Biology / China National Rice Research Institute / Chinese National Center for Rice Improvement, Hangzhou 310006, China
  • Received:2011-02-18 Revised:2011-05-25 Published:2011-10-12 Published online:2011-07-28
  • Contact: 曹立勇, E-mail: caolycgf@mail.hz.zj.cn; 程式华, shcheng@mail.hz.zj.cn

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被引次数

11

摘要： 利用超级稻协优9308重组自交系及其双回交群体，结合水面无土栽培技术和大田栽培，获得水稻地上部分蘖数、抽穗期和单株产量等10个性状和根长、总根长和根干重等7个根系性状数据，采用DPS统计软件分析XBR、RIL和ZHR群体这些性状相关性。结果表明，这些性状双亲间表现出显著或极显著的遗传差异，且在3个群体中都呈连续分布和双向超亲分离。根长分别与总根长、根表面积、根干重等5个性状极显著正相关，根直径与其他6个根系性状不显著相关。抽穗期、株高和单株产量等6个性状分别与根长、总根长和根干重等6个性状呈极显著正相关，但分蘖数、穗数、结实率、百粒重等4个性状与根系呈不显著相关，10个地上部农艺性状均与根直径不显著相关。这些结果为水稻根系遗传与育种提供了有价值的信息。本文还对利用地上部农艺性状间接选择强根系超级稻的育种策略进行了探讨。

关键词: 水稻, 根系, 地上部性状, 相关分析, XBR、RIL和ZHR群体

Abstract: A RIL population of Xieyou 9308 and two derived backcross populations derived from the RIL backcrossing with its recurrent parents were used in this study. Morphological traits were investigated including seven root parameters and ten shoot parameters under water culture and field experiment, respectively. Thephenotypic correlation between root traits and shoot traits was analyzed within XBR, RIL, and ZHR populations, carried out by ANOVA and correlation analysis utilizing DPS software. In both environments, the two recurrent parents showed significant difference in all traits. Transgressive-segregation and continuous distribution for all the traits were observed in three populations under two conditions. The root length (RL) correlated positively with five root traits including total root length (TRL), dry root weight (DRW), root surface area (RSA), root volume (RV), number of root tip (RT). However, the correlations between root diameter (RD) and the other six traits were negative. Six shoot agronomic traits including heading date (HD), plant height (PH), panicle length (PL), grain yield per plant (GYPP), number of spikelets per panicle (SPP), and grain setting density (GSD) showed a significantly positive correlation with theroot traitswhile the other four aboveground traits correlated with root traits negatively. All the ten shoot traits correlated with RD negatively. The goal of this work was therefore to provide some reliable information for hybrid breeding, and an useful selection criteria for super rice combination based on root morphological traits.

Key words: Rice (Oryza sativa L.), Roots, Shoot agronomic traits, Correlation analysis, XBR, RIL, and ZHR populations

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