黄冕林场大叶栎不同种源/家系子代林的测定结果研究

Different Sources of Provenance and its Recombinant Inbred Lines of Castanopsis fissa in Huangmian Forest Farm,Guangxi Province

在位于广西柳州市的黄冕林场进行了大叶栎9个种源、51个家系的子代测试试验。结果表明，在其子代试验林的3年生幼林期，不同种源、家系大叶栎林木的树高、胸径、单株材积等生长性状存在显著差异，据此采用综合评定法从大叶栎种源中初选出14个大叶栎优良家系。所初选的这14个大叶栎优良家系，其3年生子代幼林林木的3个生长性状与最差家系相比，平均树高增长率为23．61％～3．3．33％，平均胸径增长率为37．15％-49．54％，单株材积增长率为124．4-5％～177．84％。

We carried out an experiment on the test of 9 provenances of Castanopsis fissa and its 51 recombinant inbred lines （RILs） at Huangmian Forest Farm of Luzhai County, Guangxi Province. It showed that there existed significant differences among the characteristics of tree height, diameter at breast （DBH） , timber volume of single tree. We then used a synthetically evaluating method to screen out 14 RILs which was from 3 different type of provenance for cultivation. Compared to the eharaeteristios of the worst peigormed provenance, that of the third generation of seedlings from these 14 RILs were more 23.61% - 33.33% in average height, 37. 15% - 49.54% in DBH, and 124.45% - 177.84% in timber volumc of single tree than the later one.