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对华南地区短枝木麻黄种源 16个性状的两试点联合方差分析表明 :除 PBA和 PBL 外 ,其它性状在地点间有极显著差异 ,表明参试种源在两个地点分别进行种源筛选 ;除 1年生树高、2～ 3年生单株材积外 ,其它数量性状在种源间有显著或极显著差异 ;4年生的树高、胸径、单株材积、PBD、PBT、PBL在种源×地点 ( P× S)互作间有显著或极显著差异。方差分量比例计算结算表明 ,2～ 4年生时 ,除 4年生单株材积方差分量比例略有降低外 ,树高、胸径和单株材积的地点方差分量比例及 P× S互作的方差分量比例均随年龄的增加而增加 ;质量性状 SFA、SFS、PBD和 PBT,地点方差分量比例最大 ,而种源或加上 P× S互作的方差分量 <10 %。当不考虑 P× S互作效应时 ,种源数量性状和质量性状的遗传变异系数和广义遗传力均比考虑互作效应时相应性状的遗传变异系数和广义遗传力大。4年生树高、胸径、保存率、SFA和 SF S等 6个性状 ,按地点对参试种源进行评定结果为 :试验 E94 6中 ,优良种源为 180 86、18118、183 55、180 13、182 4 4、18119、182 88、183 4 8、180 15和 180 0 8;试验 E94 4中优良种源有 18154、183 55、1812 8、18143、18153、1812 7、1813 4、142 3 3和 182 88。这些种源均好于国内对照种源 ,分别占各自参试种源的
Two pilot co-variance analysis of 16 traits of Casuarina equisetifolia provenance in southern China showed that except for PBA and PBL, there were extremely significant differences in other traits among the loci, indicating that the provenances were screened from two provenances Except 1 year old tree height and 2 to 3 years old single plant volume, the other quantitative traits showed significant or extremely significant differences among provenances. The tree height, DBH, single plant volume, PBD, PBT, PBL in provenance × Location (P × S) There was significant or very significant difference between the two groups. Variance component ratio calculation shows that, 2 to 4 years old, except 4-year-old plant volume variance component slightly decreased, the tree height, diameter at breast height and the volume of the site variance component ratio and P × S interaction variance component ratio The SFA, SFS, PBD and PBT of the quality traits had the largest proportion of variance component of the place, while the variance component of the seed or source plus or P × S interaction was less than 10%. When the P × S interaction effect was not considered, the genetic coefficient of variation and the general heritability of the quantitative trait and the quality trait of the provenances were larger than that of the corresponding trait when the interaction effect was considered. 4-year-old tree height, DBH, storage rate, SFA and SF S and so on. According to the location, the provenances were evaluated as follows: In test E94 6, the good provenances were 180 86,18118,183 55,180 13 , 182 4 4,18119,182 88,183 4 8,180 15 and 180 0 8, and the good provenance in Experiment E94 4 is 18154,183 55,1812 8,18143,18153,1812 7,1813 4,142 3 3 And 182 88. These provenances are better than the domestic control provenance, respectively, their own test provenance