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为了解不同种源地兴安落叶松种子播种品质及幼苗生长量的差异,以进行种源选择,利用方差分析方法分析了净度、优良度、生活力、千粒重、发芽率、苗高、基径、冠幅、根幅、>2cm侧根数、主根长和须根长的种源差异,对播种品质及幼苗生长量各指标进行了主成分分析,并对各种源进行了排序。结果表明:1)利用种子播种品质和播种苗生长量指标来进行种源选择是有效的,除基径、根幅外的其他各指标在种源间均存在显著差异。2)以须根长及苗高为主的兴安落叶松种源选择改良潜力巨大。须根长和苗高受高强度的遗传控制,广义遗传力值分别为0.936,0.850;冠幅、>2cm侧根数、主根长受中等强度的遗传控制;基径和根幅受遗传控制的程度低。3)综合分析,初步认为黑龙江阿木尔、内蒙古金河、黑龙江呼中、内蒙古莫尔道嘎种源综合表现良好,具有发展潜力,但其结论尚需在今后的区域化造林试验中进一步验证。
In order to understand the difference of seed sowing quality and seedling growth of Larix gmelinii from different provenances, the selection of provenances was carried out. The analysis of variance, such as clarity, fineness, viability, grain weight, germination percentage, seedling height, , Crown width, root width, number of root> 2 cm, main root length and fibrous root length. Principal components analysis was carried out for each index of planting quality and seedling growth rate, and various sources were sorted. The results showed as follows: 1) It is effective to use the seed sowing quality and sowing seedling growth index to carry out provenance selection. There are significant differences among the provenances except base diameter and root width. 2) The selection of provenances of Larix gmelini, which mainly takes the length of the root and the seedling height, has great potential for improvement. The root length and seedling height were controlled by high-intensity genetics. The generalized heritability values were 0.936,0.850 respectively. The crown width> 2 cm lateral root number, the main root length was controlled by the medium-intensity genetic control. . 3) According to the comprehensive analysis, it is initially believed that the provenances of Amur in Heilongjiang, Jinhe in Inner Mongolia, Huzhong in Heilongjiang and Mol’erdaoga in Inner Mongolia have a good overall performance and have potential for development. However, their conclusion still needs to be further verified in the regional afforestation experiment in the future.