不同决明基因型的耐铝特性

Aluminum-tolerant characteristics of different Chamaecrista genotypes.

在铝浓度120 mg.L-1条件下,通过溶液培养试验,研究了40个决明品种(系)对铝毒的反应.比较了不同基因型各性状的相对耐性值及其与综合评价系数的相关性.结果表明:相对株高、相对根系干物质量、相对地上部干物质量和相对根系活力可作为决明耐铝毒基因型筛选的重要指标.40个品种(系)中,86134R2、2208、3170、316、2211、2232的耐铝毒能力较强,属于耐铝毒的决明基因型,而34721R1、92985、3184的耐铝毒能力较弱,属于铝敏感的决明基因型.

A hydroponic culture experiment was conducted to study the responses of 40 Chamaecrista varieties（lines） to 120 mg·L-1 of A13＋,with the correlations between the relative tolerance values of various characters of different genotypes and the comprehensive evaluation coefficient compared.Among the characters of the genotypes,the relative plant height,relative root dry mass,relative shoot dry mass,and relative root activity could be selected as the important indices for screening the Al-tolerant genotype of Chamaecrista.In the test 40 Chamaecrista varieties（lines）,the 86134R2,2208,3170,316,2211, and 2232 had stronger Al-tolerant capability,belonging to Al-tolerant genotype,whereas the 34721R1,92985,and 3184 had weaker Al-tolerant capacity,belonging to Al-sensitive genotype.