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Home > Archive>Volume 0, Issue , >. DOI:10.13430/j.cnki.jpgr.20241227002 Online First
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Screening of Drought Tolerant Germplasm of Common Bean in Seedling Stage
DOI:
10.13430/j.cnki.jpgr.20241227002
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  • Cai Debao

    Cai Debao

    Nanang Normal University
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  • Yang Shuqiong

    Yang Shuqiong

    Nanang Normal University
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  • Ma Junyan

    Ma Junyan

    Nanang Normal University
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  • Chen Jibao

    Chen Jibao

    Nanang Normal University
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Affiliation:

Nanang Normal University

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Fund Project:

Science and Technology Project of Henan Province(212102110248)

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    Abstract:

    Drought is the most important abiotic stress factor limiting the growth of common bean. In this study, 60 representative common bean germplasms were treated with drought stress using natural drought method. 12 leaf physiology characters, such as leaf electrical conductivity, water use efficiency (WUE) and 5 the Photosysm II chlorophyll fluorescence parameters, were analyzed between drought stress treatment group and control group. The drought tolerance of 60 common beans was evaluated by seedling wilting grade and drought tolerance subordinate function value (D value). The results showed that 6 varieties,including F00000017, F00000518, F00002179, F00003370. F00004321 and Nanyang Black variety, were classified as the strongest drought tolerance variety based on the leaf wilting index. Among the 6 varieties, 5 varieties except for Nanyang Black variety were also identified as the strongest drought tolerance variety based on the D value. 6 varieties, including F00001280、F00003346、F00005237、F00004357、F00004392 and F00005243, were classified as the strongest drought-susceptible variety based on the leaf wilting index. F00001280、F00003346、F00005237 were also identified as the strongest drought-susceptible variety based on D value. These results indicated that there were higher consistency in identifying the common bean drought tolerance between the seedling wilting grade method and drought tolerance subordinate function value (D value) method. The strongest drought tolerance varieties and the strongest drought-susceptible varieties identified in this study could be used in the study of common bean drought tolerance mechanism and breeding.

    Key words:common bean, seedling, drought tolerance
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History
  • Received:December 27,2024
  • Revised:February 17,2025
  • Adopted:February 19,2025
  • Online: March 14,2025
  • Published:
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