Research on heat tolerance of three Melastoma candidum varieties
To investigate the heat tolerance of three varieties Ziqi,Zishu and Nichang of Melastoma candidum.The leaves were used as materials to determine the epidermal morphology,the rate of cell injury was determined after heating in a water bath at room temperature,35,40,45,50,55,60 and 65℃for 15 minutes,semi-lethal temperatures were determined by logistic equations and analysed by affiliation function.The results showed that,the semi-lethal high temperatures of Nichang,Zishu and Ziqi were 58.97,57.81 and 57.05℃respectively,and the integrated values of the affiliation function were 2.436,2.305 and 1.184 respectively.Taken together,the three Melastoma candidum varieties all possessed a certain degree of heat resistance,and the comprehensive ranking of heat resistance was Nichang>Zishu>Ziqi.
Melastoma candidumheat resistancesemi-lethal high temperaturevariety screening
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NSTL
万方数据
