Identification and Screening of Cold Tolerance of Hemp Germplasm Resources in Germination Period
In order to screen the identification indicators of hemp cold tolerance during the germination period and explore the germplasm resources of cold tolerance in hemp,the cold tolerance of 21 hemp germplasm resources during the germination period was identified and screened.The results showed that the coefficient of variation of the 11 cold tolerance indicators in the tested hemp germplasm resources ranged from 16.652%to 155.576%.Three representative factors were quantified by principal component analysis,namely relative germination index,relative germination coefficient and relative embryonic root length,which can be used as important indicators for screening and evaluating the cold tolerance of hemp.One resource with strong cold tolerance and one resource with cold sensitivity were selected based on the membership function values.There are significant differences in cold tolerance among 21 hemp germplasm resources during the germination period,indicating rich genetic diversity.This study can provide basic materials and theoretical basis for the identification of cold tolerance of hemp germplasm resources and the selection of cold-tolerant varieties.
万方数据
维普
