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为了重建杉木种子园提供建园双优材料和经营管理好已建成的杉木种子园,本研究以遂昌杉木种子园中亲本无性系种子为研究材料,采用数量遗传学理论,研究播种品质性状的遗传变异性和遗传相关。与此同时,设计了检验空瘪涩粒成因的一小试,对杉木空瘪涩粒成因的“生态假说”进行检验,并采用数量遗传学中的线性模型理论,对空瘪涩粒成因的“生态假说”进行完善。试验结果是:杉木播种品质受强度遗传控制,并具有较大的变异性;同时播种品质性状间存明显负相关。据此得出结论:选育出播种品质性状优良的品种是可能的,直接降低种子的空瘪涩粒率,就可以间接地提高种子的发芽率。小试的分析结果是:空瘪涩粒率是受多因子综合作用和最低因子限制原则,既可从控制遗传的角度,又可从改善环境、利用遗传与环境互作的角度,来提高杉木种子的产量和质量。
In order to reconstruct the Chinese fir seed orchards to provide the double-superior materials for the construction of parks and the well-established Chinese fir seed orchards, the present study took the seed of the parents in the Suichang fir seed orchard as the research material and used the quantitative genetics theory to study the quality of the sown seeds Genetic variability and genetic correlation. At the same time, we designed a small test to test the causes of empty deflated astringent grain, and tested the “ecological hypothesis” of the origin of empty deflated astringent grain in Chinese fir. Using the linear model theory in quantitative genetics, Genetic causes of “ecological hypothesis” to improve. The results showed that: the quality of Chinese fir was controlled by intensity and had great variability; at the same time, there was a significant negative correlation between sowing quality characters. Based on this, it is concluded that it is possible to breed fine varieties with good quality traits. Directly reduce the empty kernel percentage of seeds, the seed germination rate can be indirectly increased. The results of the pilot test are as follows: The percentage of empty kernels is determined by the combination of multiple factors and the lowest factor, which can improve the environment of Chinese fir from the perspective of genetic control and from the viewpoint of improving the environment and utilizing the interaction between genetics and environment Seed yield and quality.