摘要
杉木不同类别良种改良效果的比较研究＊徐金良洪昌端沈辛作项龙昌关键词杉木良种增产效果杉木（Ｃｕｎｎｉｎｇｈａｍｉａｌａｎｃｅｌｏａｔａ（Ｌａｍｂ．）Ｈｏｏｋ．）是我国南方主要的速生用材和造林树种。浙江省从７０年代初开展杉木遗传改良工作以来，以种源选择、...
The genetic gain test plantation located in Kaihua County of Zhejiang Province collected 34 Chinese fir improved varieties which were from 6 superior provenances,18 good families,2 better clones selected preliminarily in Zhejiang,4 seedlots from first generation and 1.5 generation corresponding local clonal seed orchards (CSO),3 superior provenances from the provenance seed orchard (PSO) in Kaihua County and a CK.The results for these plantations at age 5 showed that it is possible to acquire great genetic gains through provenance,family and clone selection.It was found that the real gains of the preliminarily selected clones and good families were the greatest (55.2%) among the improved varieties tested for volume at age 5.The average tree growth of the best family was 5.88 m in height,10.1 cm in DBH and 106.9% in volume over those of the CK.The real volume gains of 1.5 generation CSO,first generation CSO and superior provenances were 37.7%,28.2% and 27.6% respectively.For the superior provenances from PSO,its stem volumes were 31.4% over CK (between first generation and 1.5 generation CSO).Among the improved varieties,the preliminarily selected clones and good families possessed the smallest phenotype variation coefficients and similar individual performance.This paper also puts forward some suggestions for the research,production and application of Chinese fir improved varities in Zhejiang.
出处
《林业科学研究》
CSCD
北大核心
1997年第3期337-340,共4页
Forest Research
关键词
杉木
良种
增产效果
品种改良
Chinese fir improved varieties genetic gain
