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《Journal of Northeast Forestry University》 2001-05
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Variation Analyses of Tree Growth and Wood Properties among Slash Pine Provenances and Comprehensive Selection of Superior Provenance

Xu Youming(Huazhong Agricultural University, Wuhan 430070, P. R. China); Bao Chunhong(Forestry Bureau of Yicheng City, Hubei Province); Zhou Zhixiang(Huazhong Agricultural University); Wen Xuefeng(Forestry Research Institute of Jingzhou City, Hubei Provin  
year-old tree growth traits of 17 slash pine provenance's stands planted in Jingzhou districts of Hubei Province and their wood properties were studied in this paper. The distinct differences in trees height, diameter at breast height, trees volume, wood basic density and latewood percent were found among provenances. Their broad heritabilites range from 0.434 to 0.681. There are four radial variation patterns of basic density within slash pine trees, but the main pattern is a steadily increasing trend from pith to bark. The value of basic density in 5-year-old trees can be used to predict that in 12-year-old trees. The relationship of wood basic density to trees height, diameter at breast height and trees volume within a given provenance are not specific and correlated with the provenance. Wood basic density is clearly related to late wood percent. Late wood percent is markedly positive related to the latitude of local provenance of slash pine and clearly negative to the annual temperature. Finally S 1, S 3, S 20 were selected to be superior provenances of slash pine from both tree growth increments and wood properties.
【Fund】: 国家自然科学基金资助项目 (NSFC39870 6 38)
【CateGory Index】: S791.246
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