Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2020, Vol. 36 ›› Issue (5): 18-25.doi: 10.11924/j.issn.1000-6850.casb20190700421

Special Issue: 资源与环境 园艺

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Phytohemagglutinin in Common Bean Germplasm Resources: Determination and Content Variation Analysis

Hu Yanqiu1, Feng Guojun1(), Yang Xiaoxu2, Liu Chang2, Liu Dajun1, Yan Zhishan2   

  1. 1 College of Life Science, Heilongjiang University, Harbin 150080
    2 Crop Research Institute of Heilongjiang University, Harbin 150080
  • Received:2019-07-12 Revised:2019-09-13 Online:2020-02-15 Published:2020-02-21
  • Contact: Feng Guojun E-mail:feng998@126.com

Abstract:

To study the genetic diversity and content variation of phytohemagglutinin (PHA) in common bean germplasm, 317 bean varieties were used to determine plant PHA in fresh pods by improved hemagglutination method. PHA contents in ‘Purple Crown’ and ‘White Pearl’ in different development stages of pods, pod walls and seeds were also measured. The results showed that the PHA content in common bean was 0.004-1.783 mg/g, and the coefficient of variation was 0.493. The frequency distribution curve was continuous and the main peak was obvious, showing an approximate normal distribution. PHA levels had significant differences among common bean populations, which showed obvious germplasm specificity and genetic diversity. Low PHA level was detected in ‘Purple Crown’ and ‘White Pearl’ pods from 4 to 6 days after flowering, indicating that the PHA in pod began to accumulate in the fourth day after flowering. The PHA of ‘Purple Crown’ and ‘White Pearl’ had the same trend with the growth and development of pods, first rose and then decreased, and then rose and decreased again, had the phenomenon of ‘double peaks’.

Key words: common bean, PHA, hemagglutination assay, genetic diversity, dynamic change of lectin content

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