Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2020, Vol. 36 ›› Issue (35): 14-21.doi: 10.11924/j.issn.1000-6850.casb20191201000

Special Issue: 园艺

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Mutagenesis of Kidney Bean Cultivar A18-1 by EMS and Mutant Library Construction

Qin Xiangkai1(), Feng Guojun2(), Liu Dajun2, Liu Chang2, Yang Xiaoxu2, Yan Zhishan2   

  1. 1College of Life Sciences, Heilongjiang University, Harbin 150080
    2Crop Research Institute, Heilongjiang University, Harbin 150080
  • Received:2019-12-26 Revised:2020-02-06 Online:2020-12-15 Published:2020-12-18
  • Contact: Feng Guojun E-mail:1689159534@qq.com;feng998@126.com

Abstract:

Kidney bean (Phaseolus vulgaris L.) as an important economic crop is widely planted. It is characterized by many varieties, obvious phenotypic differences and small genome, and has become an important material for studying the genome function of legume plants. In order to create more mutant materials for improving the varieties and enriching the mutant library, and to accumulate the materials for study genome function of legume plants in the future, dried kidney bean seeds of A18-1 were treated with 0.04 mol/L ethyl methanesulfonate (EMS), 2128 M2 plants were conducted with field phenotype selection during the whole growth period, and 107 mutants were screened, which accounted for 5.03% of the total population. The mutants were constructed with trait variations on leaf, stem, flower, pod, plant type, fertility and maturity. Among them, the number and the type of mutants related to leaf shape and leaf color were the most, accounted for 27.0%. But the number of mutants related to stems, flowers and fertility was equal and the least, taking up 10.3% of total mutants. This experiment could provide new materials for constructing and innovating mutant libraries, and it is of great significance for studying specific relationship between genome function and phenotype as well as genetic breeding.

Key words: kidney bean, ethyl methanesulfonate (EMS), mutagenesis, mutant library, phenotypic screening

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