湖南省杉木优良无性系定向选择

The direction selection of superior clones of Cunninghamia lanceolata in Hunan Province

通过初级种子园杂交组合全同胞测定和自由授粉半同胞测定,对杉木优良无性系(二代优树)选择方法、亲本来源及遗传特性进行研究,评选出40个优良无性系于2010年9月通过湖南省林木品种审定委员会品种审定,并颁发林木良种证书。该批无性系根据其遗传特性划分为少节(无节)材、红心材、密植材、瘠薄地造林材和开花结实性能优5个类型,已在省内杉木二代种子园中嫁接推广。

Based on the determination of cross full-sib and determination of open-pollinated half-sib of Cunninghamia lanceolata in the first generation seed orchard,the selection method,the parental origin and genetic characteristics of superior clones of C.lanceolata（second generation superior trees） were studied.There were 40 selected superior clones of C.lanceolata identification with Variety Approval Committee of Hunan Tree Seed and Seedling in September 2010,and got the forest seed certificate issued.Those superior clones were divided into five types with their genetic characteristics,such as less sections（or no section） wood type,red wood type,close planting wood type,hard planting situation wood type,and flowering and fruiting performance type.Those superior clones of C.lanceolata were promote graft in the second generation seed orchards in Hunan Province.