
Variation and cluster analysis on the main economic characters and nutrients of fruit from Carya cathayensis and C. dabieshanensis fine trees
JI Linlin, CHEN Suchuan, WU Zhihui, CHANG Jun, TAO Rupeng, ZHOU Misheng, CAI Xinling
JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2022, Vol. 46 ›› Issue (1) : 131-137.
Variation and cluster analysis on the main economic characters and nutrients of fruit from Carya cathayensis and C. dabieshanensis fine trees
【Objective】 In this study, the main economic characteristics and contents of the main nutrients of fruit from 22 fine trees of Carya cathayensis were compared and a correlation analysis was made on the above indicators in order to provide a scientific basis of purposeful fine seed breeding as well as its development and utilization. 【Method】 Seven main economic characteristics and the contents of six main nutrients of fruit from 22 fine trees of C. cathayensis were compared and analyzed and a correlation analysis was made on the above indicators. 【Result】 There were highly significant differences in the fresh fruit masses, the nut masses, the dry nut masses, the dry masses, the fresh seed rate, the dry seed rate and the dry kernel rate. Of all these fine trees, there were highly significant differences in the contents of crude fat, protein and the main fatty acid. According to the results of correlation analysis, the fresh fruit masses had an extremely significant positive correlation with the nut masses, the dry nut masses, the dry masses and the dry kernel rate. The contents of the crude fat had a significant positive correlation with the oleic acid content and a significant negative correlation with the linoleic acid. The result of the principal component analysis demonstrates the nut masses, the dry nut masses and the oleic acid content. Based on the results of cluster analysis, the 22 fine trees were divided into five groups including Hule No. 1 tree, Guoziyuan No. 1 tree and Guoziyuan No. 3 tree, which were individually clustered into one type; other excellent samples of C. cathayensis and C. dabieshanensis were also classified as one type. 【Conclusion】 The nut mass, dry nut mass and oleic acid content were very important for providing a scientific basis for fine seed breeding as genetic resources were very abundant in all these fine trees and there were highly significant differences in their economic characteristics and nutrients as well as their development and utilization. According to the results of cluster analysis, there are differences between C. cathayensis from Ningguo City and C. dabieshanensis from Dabieshan Mountain.
Carya cathayensis / C. dabieshanensis / fine trees / economic characters / nutrients / cluster analysis
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