杉木无性系扦插生根能力遗传变异的研究  

GENETIC VARIATION OF ROOTING ABILITY OF BETWEEN CHINESE FIR CLONES

作　　者：施季森[1] 何祯祥[1] 叶志宏[1] 李寿茂[2] 余荣卓[2] 翁玉榛[2] 吴奇镇 

机构地区：[1]南京林业大学 [2]福建省林业厅洋口林场

出　　处：《南京林业大学学报（自然科学版）》1993年第4期9-14,共6页Journal of Nanjing Forestry University：Natural Sciences Edition

摘　　要：从种子园、家系、个体三个水平上详细研究了杉木768个无性系扦插生根能力的遗传变异规律。衡量无性系扦插生根能力的4个性状(不定根总数、不定根总长、侧根总数和最长一根不定根长度),在种子园、家系、无性系各个水平上均存在极显著的差异,其中大部分变异在无性系水平。首次揭示了杉木扦插生根能力的家系效应和无性系效应。杉木无性系各生根性状均受到较强的遗传控制,通过对杉木的生根性状进行选择,可能具有较大的选择响应。本文还对无性系生根能力与原株的繁殖系数、原株的生长性状与生根能力间的关系进行了讨论。Variation on rooting ability associated with geographic origings (seed orchard), families within seed orchard, and individuals (clones) within families were evaluated in this research. There is an appreciable variation of four rooting traits at all three levels. Greater genetic variance components at clonal level in each of the rooting traits were observed. The rooting traits of cuttings are strongly under genetic control. In addition, the correlations among the propagation coefficient of ortets, the rooting ability of cutting and the growth of ortets (Stem Volume) were also discussed.

关 键 词：杉木 无性繁殖 生根 遗传变异 生根 

分 类 号：S791.270.1[农业科学—林木遗传育种]