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毛白杨标本园是一种毛白杨遗传资源库,是开展毛白杨有性生殖研究和获取新的重组基因型的重要场所.通过对山东省冠县全国毛白杨标本园中无性系开花结实习性的初步调查和研究,结果表明,标本园中大多数雌雄无性系能够开花结实,基本上不存在花期不遇的现象;来自陕西和河南两个产地的毛白杨开花结实较多,花粉和自由授粉种子的质量以陕西的无性系较好.其中有些无性系可以作为今后开展毛白杨杂交育种的理想亲本.建议对毛白杨标本园中无性系的有性生殖生物学进行深入研究,同时开展毛白杨标本园中无性系自由授粉子代的遗传变异和选择利用的研究.
Populus tomentosa plantation is a Populus germplasm genetic resources library, is to carry out sexual reproduction of Populus tomentosa and access to new recombinant genotypes important place.Through the crown of Shandong Province, Preliminary investigation and research showed that most of the male and female clones in the specimen garden were able to flowering and fruiting, and there was basically no flowering season. Populus tomentosa from both areas of Shaanxi and Henan showed more flowering and fruiting, pollen and pollinated seeds The quality of the clones in Shaanxi is better.Among some of the clones can be used as future parents to carry out hybrid poplar breeding parents.It is suggested that the sexual reproduction biology of clonal Populus tomentosa in-depth study of the park, at the same time carry out Populus tomentosa Park Study on Genetic Variation, Selection and Utilization of Free Pollination Progenies of.