Provenance and Fam ily Tr ia ls for B e tu la a lnoides in Pingx iang, Guangx iI. Early Var ia tion of Growth Tra its
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1.
Experimental Center of Trop ical Forestry, CAF, Pingxiang 532600, Guangxi, China
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2.
Research Institute of Trop ical Forestry, CAF, Guangzhou 510520, Guangdong, China
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Received Date:
2008-01-15
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Abstract
A p rovenance and family trial of B etula alnoides was conducted in Pingxiang of Guangxi, with 25p rovenances and 400 families involved. The genetic variation of growth traitswere analyzed in the first four years. Itwas shown that there were highly significant differences in height (H) and diameter at breast height (DBH) amongp rovenances as well as families, and the height and DBH of p rovenances were remarkably correlated to thelongitudes of their seed sources, respectively. Itwas inferred that p rovenance selection wasmore highly reliable withage of the tree getting older based on the result of correlation analysis on growth performance at different ages, andthe p riority should be given to the p rovenances near the site for p lantation development of this species since mostp rovenances from Guangxi grew the best.
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