Selection of Fine Provenance of Masson Pine for Afforestation Regions

Analysis study on genotype and phenotype correlation of tree height,DBH,volume growth,stem form,bearing,resistance and survival rate of six groups of the national masson pine provenance trial stands was conducted in 13 provinces since 1976,and the results suggested that fine provenances could be selected on these traits. The volume data from two ali-distribution trails in three afforestation regions'nine sites indicated that there were evident interaction between provenances and afforestation regions or site types within afforestation regions,and significant provenances'correlation among sites. Provenances'stability and adaptability were studied with Wright's model and divided into different types. Provenances' survival rate and hard-resistance were studied and their correlations with latitude wereanalysed.In the integrated provenance selection by index for above-mentioned traits for the afforestation regions and site types,Nanling,Yunkaidashan,Daloushan and Wuyishan mountain areas were found as our country's main fine provenance regions. The provenance selection effects for different afforestation regions were very significant,while volume gains averaged 46.2%(the heighest 60%～110%)in both northern zone and eastern and central regions of central zone.