摘要
The height and DBH of 5 to 7-year trees of filial generation of single parent were tested and analysed in 1997—1999 in second generation seed orchard of Chinese fir(Cunninghamia lanceolata(Lamb.)Hook) in Changle Forestry Center.The results showed that the growth traits of height and DBH were most significantly different among the tested families.The heritabilities of height and DBH of families different years in were 67.02%、73.41%、54.95%、59.18%、55.48% and 47.37% respectively.The genetic gain of families of plus tree of superior provenance and hybrid match was more than that of the families of plus tree of superior families of first generation seed orchard of Chinese fir.The genetic gain of second generation seed orchard was more than that of the filial generation of superior provenance and mixed families filial generation of first generation and 1 and(1.5) generation seed orchard.The selection was effective on material of second generation of Chinese Fir and the second generation seed orchard rebuilding was successful.
The height and DBH of 5 to 7-year trees of filial generation of single parent were tested and analysed in 1997-- 1999 in second generation seed orchard of Chinese fir（ Cunninghamia lanceolata（ Lamb. ）Hook） in Changle Forestry Center. The results showed that the growth traits of height and DBH were most significantly different among the tested families. The heritabilities of height and DBH of families different years in were 67.02% .73.41% .54.95% .59.18% .55.48% and 47.37% respectively. The genetic gain of families of plus tree of superior provenance and hybrid match was more than that of the families of plus tree of superior families of first generation seed orchard of Chinese fir. The genetic gain of sec- ond generation seed orchard was more than that of the filial generation of superior provenance and mixed families filial gen- eration of first generation and 1 and 1.5 generation seed orchard. The selection was effective on material of second genera- tion of Chinese Fir and the second generation seed orchard rebuilding was successful.
出处
《林业科学研究》
CSCD
北大核心
2005年第5期632-635,共4页
Forest Research
基金
国家"九五"攻关项目子专题"杉木良种选育技术研究"
"九五"浙江省林业厅"杉木多世代遗传改良及育种群体建立技术研究"项目的部分研究内容
关键词
杉木
2代种子园
单亲子代
生长量
增益
Chinese fir
second generation seed orchard
filial generation of single parent
genetic gain
