Drought Resistance Identification of Common Bean Germplasm Resources at Bud Stage
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    Abstract:

    Abstract: Drought is a major problem for common bean production and the drought tolerance in common bean is a priority research area in worldwide. The germination rate and germination vigor of common bean germplasm resources were evaluated with different PEG6000 density. The results showed that 19.6% (-0.7 MPa) is the optimum density for screening drought resources at bud stage of common bean. Thus, -0.7 MPa PEG6000 solution was used to analyze 121 accessions of common bean germplasm resources for drought resistance. Principal component analysis results showed that relevant germination rate (RGR), relevant germination vigor (RGV), relevant fresh weight (RFW), relevant dry weight (RDW), relevant root length (RRL), relevant shoot length (RSL), relevant root /hypocotyls (RR/H), relevant germination index (RGI) and relevant activity index (RAI) were considered as closely related traits for the drought resistance in common bean. Based on the membership function analysis, Yaojindou (F0000156) and Baibiandou (F0000613) exhibit high drought resistance.

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History
  • Received:January 28,2013
  • Revised:February 27,2013
  • Adopted:June 07,2013
  • Online: June 07,2013
  • Published:
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