杉木外地优良家系引种及选择研究

Study on Introducing and Selecting Fine Families of Cunninghamia lanceolata Outside Guizhou

从南京林业大学引进22个杉木(Cunninghamia lanceolata)第二代种子园优良家系,对其10年试验结果进行分析,引种家系胸径生长与对照存在显著的遗传差异,大部分家系生长量不如贵州黎平的(对照ck2)高;各家系生长量达显著和极显著水平,以生产力指数、稳定性参数和材积生长量综合评判,将参试家系分成优良(Ⅰ)、中等(Ⅱ)、较差(Ⅲ)3类,并从中选出3个可以在我省利用和推广的优良家系。

22 fine families are introduced in the second generation of seed garden from Nanjing Forestrey University. 10 years of study shows that there are remarkable differences in genetics between the introduced fami- lies and the local families, most growth of which are shorter than the introduced one; each families＇ growth reaches remarkable and extremely remarkable levels; the experimented local families are classified into three levels, Ⅰ , Ⅱ and Ⅲ and three excellent families, which can be utilized for extension in guizhou, are selected.