摘要
为了研究黧蒴栲半同胞家系木材材性遗传变异和估测其遗传参数,采用随机完全区组试验方法,对6年生家系进行生长测定与木材材性分析。结果表明:黧蒴栲半同胞家系木材密度有显著差异,纤维长度、宽度有极显著差异。木材密度遗传变异系数为4.22%,广义遗传力为0.1916,纤维长度遗传变异系数为3.09%,广义遗传力为0.2658,均受较弱遗传控制;纤维宽度遗传变异系数为5.71%,广义遗传力为0.3985,受弱中强度遗传控制。家系胸径、树高生长与木材密度、纤维长度不相关,与纤维宽度呈较弱相关关系。木材密度、纤维长度、纤维宽度等性状在遗传上是相互独立的,可对这些性状进行独立选择,培育出木材材性较好又速生的家系。
In order to research half-sib families of Castanopsis fissa ' s wood properties genetic variation and estimate genetic parameters,4-year old half-sib families ' growth test and wood properties were analyzed by randomized block design.The results suggested that:wood density was significantly difference and fiber length and width were very significantly difference.Wood density and fiber length ' s genetic variation coefficient were respectively 4.22%,3.09% and the broad heritability were respectively 0.1916,0.2658,which indicated the two traits were controlled by the weaker genetic factors.Fiber width ' s genetic variation coefficient was 5.71% and the broad heritability was 0.3985 which indicated fiber width was controlled by the moderate genetic factors.The DBH and height growth between wood fiber length and density had no correlation,but the DBH and height growth between fiber width had weaker correlation.Wood density,fiber length and fiber width were mutually independent in genetic.Though choosing these traits in independent,it could cultivate the families which have good wood properties and fast-growing characteristic.
出处
《中国农学通报》
CSCD
2013年第4期10-13,共4页
Chinese Agricultural Science Bulletin
基金
林业公益性行业科研专项"高热能固体燃料树种新品种选育技术研究"(200904036)
关键词
材性
半同胞家系
遗传变异规律
遗传参数
黧蒴栲
wood properties
half-sib
genetic variation
genetic parameter
Castanopsis fissa
