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gca
    The results of the combining ability analysis indicated: when genetic test was carried out by using material Ⅱ (cross parents were rapid growth clones through evaluation and selection of GCA in growth traits), its population variances of GCA (general combining ability) σ g 2<σ s 2 population variances of SCA (special combining ability).
    杉木配合力分析结果表明:采用Ⅱ类材料,进一步进行遗传测定时,群体一般配合力(GCA)方差σg2小于群体特殊配合力(SCA)方差σs2;
    Only at the 0.05 level of probability are there statistically significant differences in the GCA of seedling height, and the differences in GCA of the ground diameter of seedlings were not significant. M4×M1, BH3×BH2, M4×BH3, BH2×BH1 and BH2×M1 are superior cross combinations given the effects of GCA and SCA. Also M4 and BH3 are superior parents.
    根据杂交子代一般配合力效应值和特殊配合力效应值,从25个杂交组合中初选M4×M1、BH3×BH2、M4×BH3、BH2×BH1、BH2×M1组合为优良组合,M4和BH3为优良亲本.
    The analysis result of combining ability showed that the cross between provenances had a significant difference predominantly due to the GCA effect.
    配合力分析结果表明 :杉木种源间杂交组合生长量存在显著的遗传差异 ,主要受一般配合力效应的影响 ;
    Interaction effect between sites and crosses also existed to a certain extent for all traits, and the effect was significant for diameter at breast height and density, the ratios of additive variance to total genetic variance were from 96 41% to 100% for diameter at breast height, volume, straightness, density, and resistance, when mean square of general combining ability (GCA) was significantly greater than that of specific combining ability (SCA).
    所有研究性状均存在着一定程度的地点与基因型互作 ,其中胸径、基本密度均达到了显著以上水平 ; 在一般配合力 (GCA)均方差显著地大于特殊配合力 (SCA)均方差的前提下 ,胸径、材积、基本密度、通直度、抗风性的加性方差占总遗传方差的 96 .4 1%~ 10 0 %。
    Three quantitative characters, i.e . tree height, dbh, volume were focused, and their effects were discussed in detail. It was found that the GCA, SCA and specific reciprocal cross effects (SRE) were most important, and female effect (FEM) and male effect (MAL) were less important.
    结果表明 ,这些性状主要受一般配合力 (GCA)、特殊配合力 (SCA)和特殊正反交效应(SRE)的控制 ,母本效应 (FEM)对弯曲度有较小作用 ,而父本效应 (MAL)对所有性状影响甚微。
    The strategy for pine cutting breeding was put forward as follows:Fundamental study on genetic testing should be strengthened, seedlings or clones from high GCA(general coupling ability) parents testified by growth of their offsprings should be used for cutting propagation of pine tree species.
    提出松类扦插繁殖的思路:加强基础研究,通过子代测定选择一般配合力高的家系或无性系,用其全同胞子代苗扦插扩繁;
    It was found that variances due to general combining ability (GCA) and specific combining ability (SCA) were significant for height, DBH, volume index, wood basic density and dry matter index. However, the dominant gene effect was predominant over the additive effect.
    研究发现 ,树高、胸径和材积生长、干物质积累及木材基本密度等纸浆材主要经济性状的一般配合力 (GCA)和特殊配合力 (SCA)效应极为显著 ,但显性基因效应起主导地位 ,加性基因效应次之。
 

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