【摘要】 创制杉木新种质和筛选优良育种材料，旨在推进杉木第4代遗传改良研发进程。在贵州黎平杉木3.5代无性系种子园开展了两组入园无性系全同胞交配，获得了66个交配组合种子，完全随机区组播种开展交配子代苗期测定。不同交配组合的苗高和地径存在极显著差异，交配组合的苗高、地径的遗传控制程度高。联合苗高和地径选择了生长较快的27个组合，苗高和地径超过3.5代种子园混系19.5%～36.1%。结合苗木速生性与配合力效应，评选出2个超优父本、3个超优母本和5个超优组合。基于营养繁殖或交配制种育苗，5个超优组合苗木建立家系林业的现实增益大，3个速生超优组合即4×13、12×24和11×27入选贵州杉木4代育种群体精英材料。更多还原

【Abstract】 This study aims to create new germplasms of Cunninghamia lanceolata Hook. and screen excellent breeding materials to promote the research process of the fourth-generation genetic improvement of Cunninghamia lanceolata Hook. In Liping, Guizhou, two sets of full-sib crosses were conducted among the introduced clones in the 3.5-generation clonal seed orchard of Cunninghamia lanceolata Hook. in Liping, Guizhou Province, and seeds from 66 cross combinations were obtained. The seeds from cross combinations were sown in a completely randomized block design for seedling-stage determination. Significant differences existed in seedling height and ground diameter among cross combinations, with high genetic control. 27 fast-growing combinations were chosen. Seedling height and ground diameter surpassed those of the mixed clones in the 3.5-generation seed orchard by 19.5%～36.1%. Two top male parents, three top female parents, and five top combinations were selected by integrating seedling growth rate and combining ability. For vegetative or cross-based seedling cultivation, the 5 top-notch crosses bring high returns in family forestry. Combinations 4×13, 12×24, and 11×27 were selected as elite materials for the fourth-generation breeding population of Cunninghamia lanceolata Hook. in Guizhou.更多还原