Objective:In order to compare the annual yield increment and quality of different prove-nances of Bletilla formosana and select those with better comprehensive performance.Methods:Six different provenances of B.formosana were used as materials to determine the annual yield increment,ash content,extracts content,polysaccharides content,flavonoids content and total phenols content.Moreover,ANOVA,multiple comparisons and principal component analysis were used to comprehen-sively evaluate B.formosana from different provenances.Results:There were extremely significant dif-ference in the measured indexes among different provenances of B.formosana.The content of flavo-noids was positively correlated with the increasing of annual yield,and the correlation coefficient was 0.892.There was a significant negative correlation between total phenol content and polysaccharide content,the correlation coefficient was-0.684.The principal component analysis simplified the six measured indexes into three principal components of the original information of all variables.Finally,among the six provenances,two elite provenances(Sanjiao Village and Yongbao Village)of B.formo-sana were screened out with better comprehensive performance.Conclusion:The B.formosana of San-jiao Village had the highest contents of extractables,polysaccharides and total phenolics.While the B.formosana of Yongbao Village had the highest contents of ash,polysaccharides and flavonoids.Both of those provenances could be used as high-quality provenances for artificial planting experiments of B.formosana,selection of excellent parents for breeding,or for further resource development and utiliza-tion.
Bletilla formosanaAnnual increase of yieldComprehensive evaluation
维普
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