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应用生态学报 ›› 2002, Vol. ›› Issue (6): 766-768.

• 研究论文 • 上一篇    

小麦地上部和根系生长的相关性及其在耐Al性筛选中的作用

林咸永, 章永松, 罗安程   

  1. 浙江大学环境与资源学院, 杭州 310029
  • 收稿日期:2000-05-15 修回日期:2000-09-13 出版日期:2002-06-15
  • 通讯作者: 林咸永,男,1965年生,博士,副教授,主要从事植物对矿质元素缺乏和毒害胁迫的适应机制方面的研究,发表论文38篇.Tel:0571-86971147,E-mail:linxy@mai.hz.zj.cn
  • 基金资助:
    国家自然科学基金(38970486);浙江省自然科学基金资助项目(394143)

Correlations of shoot and root growth and its role in screening for aluminum tolerance in wheat

LIN Xianyong, ZHANG Yongsong, LUO Ancheng   

  1. Department of Resource Sciences, College of Environmental and Resources Sciences, Zhejiang University, Hangzhou 310029
  • Received:2000-05-15 Revised:2000-09-13 Online:2002-06-15

Abstract: Alarge-volume solution culture and a small-pot soil test were adopted to screen for aluminum tolerance in wheat. Significant correlations were observed between root and shoot tolerance indices in wheat genotypes by using the same or different screening method. It was also shown that root tolerance parameters such as relative root length (RRL) and relative root dry weight (RRW) had more sensitive for differentiating aluminum tolerance in wheat genotypes indicated by higher standard deviation (SD),coefficient of variation (CV),and distrbution of data. Although shoot tolerance parameters,such as relative shoot length (RSL) and relative shoot dry weight (RSW) had less sensitive for differentiating aluminum tolerance within wheat genotypes indicated by lower SD,CV,and distribution of data,shoot growth parameters were reliable indicators of Al tolerance because they were sufficient to discriminate Al-tolerant and Al-sensitive genotypes in wheat. Shoot growth especially shoot length could be easily,rapidly,and non-destructively determined,and used effectively to screen for aluminum tolerance in a large-scale screening or breeding program.

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