Comparison of nutrient contents in the Paeonia delavayi seeds of different geographic provenance from the same origin
To provide reference for the selection of germplasm resources of Paeonia delavayi with excellent characteristics and suitable for oil development,hundred-grain fresh weight,hundred-grain dry weight,water content,soluble sugar content,soluble protein content,crude fat content and fatty acid composition and content of Paeonia delavayi seeds cultivated in the same environment(the seeds were from nine provenances)were determined.The correlation between each index and the correlation between each index and the geographic factors of the provenance were analyzed,and the principal component analysis(PCA)and cluster analysis of the fatty acid composition were performed.The results indicated that there was significant differences in the indexes of Paeonia delavayi seeds of different provenance after the artificial cultivation in the same evinronment.The variation was at a relatively high level in the indexes of soluble protein,linoleic acid,and myristic acid with variation coefficient of 21.76％,19.57％and 18.52％,respectively.The seeds collected from Hexi,Lijiang showed the highest crude fatty content,which reached 21.64％.The content of α-linolenic acid in Paeonia delavayi seeds in Ludian,Lijiang was the highest(42.84％).The correlation analysis showed that there were significant positive correlations between the hundred-grain fresh weight(p＜0.01),hundred-grain dry weight(p＜0.05),and provenance altitude.PC A results showed that stearic acid,α-linolenic acid,undecanoic acid,oleic acid,capric acid and linoleic acid could reflect the fatty acid composition in the seeds of different provenance well,and nine seeds of different provenance were divided into three large clusters when the euclidean distance was five.In conclusion,provenance has some influence on the nutrient of Paeonia delavayi seeds,the provenance factors of parents in the breeding process should be fully considered to obtain better breeding results of Paeonia delavayi for oil-use.
NETL
NSTL
万方数据
维普
