【摘要】 在南、中、北亚热带地区三片九年生马尾松种源试验林中(广西南宁、江西安福、浙江鄞县),采集9个代表性种源试样,测试28项包括木材构造、物理和化学的性状,进行种源间比较选择,结果是:①经试验点内及多点方差分析,各性状种源间差异远大于种源内个体间差异,且种源与试验点间存在互作。②主要造纸经济性状(管胞宽、长宽比、双壁厚、腔径和壁腔比等)遗传力估值均大于0.6,受强度的遗传控制。③材性与生长性状间相关分析表明,在马尾松速生地区作高、径性状的正向选择会导致种源或个体的管胞长宽比、晚材率和壁腔比下降,管胞宽度及腔径增大,这为间接选择提供依据。④取与造纸性能关系紧密的11项木材性状,综合选择出高州、宁明、吉安和德江等优良种源。更多还原

【Abstract】 The samples of 9 provenances were collected from 9-year-old test stands of Masson’s Pine located on 3 plantations representative of the northern, central and southern subtropical zones to analyse wood traits including timber structure, physical properties and chemical components. The results are as follows: (1) The variance analyses among and within plantations show that differences between provenances outweighted those between individuals within provenances, and there were significant inter ractions between provenances and plantations. (2) Main economic traits, such as fibre width, the rate of fibre length to width, dipwall thickness, lumen diameter and their rate etc., were controlled by strong heredity effects, since these traits’ hereditary values were all over 0.6.(3) Correlative analyses between wood properties and growth traits suggested that positive selection of growth traits in fast-growing regions tended to decrease the rate of summerwood, rate of fibre length to width, and rate of dipwall thickness to lumen diameter, or increase fibre width and lumen diameter, which provided evidences for indirect selection of timber prop-erties.(4) After selection by 11 traits in close relation to pulp characters, some fine provenances as Gaozhou, Ningming, Ji-an and Dejiang were selected for representative regions.更多还原