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《Acta Botanica Sinica》 2001-01
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Isolation and Genetic Analysis of Arabidopsis Mutants with Low_K~+ Tolerance

ZHAO Shu_Qing , LIN Chun , YANG Xiao_He, WU Wei_Hua ** [WT6BZ](Department of Plant Sciences, College of Biological Sciences, China Agricultural University; Key Laboratory of Plant Physiology and Biochemistry, The Chinese Ministry of Agricultu  
Ethyl methane_sulfonate (EMS)_mutagenized Arabidopsis M 2 populations were screened in low_K + medium using the root_bending assay. Forty_two putative low_K +_tolerant ( lkt ) mutants were selected from 150?000 tested M 2 seedlings, and two of these mutants maintained their low_K +_tolerant phenotype in their M 3 generations, respectively. Genetic analysis showed that either one of these two mutants has a monogenic recessive mutation in a nuclear gene, and that the two mutations in two independent mutants are allelic to each other.
【Fund】: SupportedbytheNationalNaturalScienceFoundationofChina ( 3 95 70 0 74;;3 95 2 5 0 0 3 ;;and 3 9873 95 6toWWH)andBeijingScienceFou
【CateGory Index】: Q945.7
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