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- W2391024995 abstract "A selection of plus-tree of Pinus kesiya var.langbianensis with high-rosin production was carried out in the main distribution area in Pu'er,Yunnan Province,China.Four hundred and five plus tree were selected by using the method of integrating absolute value and the comparative tree.The specific yield was used as a major indicator,other factors,such as tree factor,environmental factor were referred.Factorial analysis was conducted on the yield of resin production.The results showed that a linear regression relationship existed between the specific resin yield and and diameter at breast height(DBH) with significant correlation,manifested by a correlation coefficient of 0.964.The amplitude of fluctuation of average specific yields of different DBH levels demonstrated that when the DBH was over 21 cm,changes of resin production was stable,and phenotypic expression was perfect,indicating that the selection should be carried out in the trees with DBH over 21 cm.DBH and tree height all had the relevance with the resin quantity,however,measuring tree height was not easy in the complicated mountains environment,so DBH should be as a key factor in the field selection.The impacts of environmental factors were not significant to the resin quantity,but the impact of the tree factor was significant.Therefore it was deduced that genetic factors were dominant in the resin production.Resin yield could be promoted by genetic improvement." @default.
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- W2391024995 date "2010-01-01" @default.
- W2391024995 modified "2023-09-25" @default.
- W2391024995 title "Selection of Plus-tree with High-rosin Production for Pinus kesiya var. langbianensis" @default.
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