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种源试验是把一个树种自然分布区内不同产地的种子或种条集中一点或多点进行遗传学研究,探讨种分化和变异模式,为林业生产选择最适宜的供种区。在一定意义上讲,它是利用现有基因资源,充分发挥其遗传潜力的重要途径,也是林木良种化的最经济而有效的手段之一。 白榆(Vlmus Pumila)是我区主要造林树种之一。具有生长快,抗逆性强,经济价值高等多种优良特性。它的分布范围很
Germplasm test is to study the genetics of seeds or seeds in different habitats of different species within a natural distribution area of a tree species, discuss the species differentiation and variation patterns, and select the most suitable species-supplying area for forestry production. In a certain sense, it is an important way to make full use of its genetic resources and make full use of its genetic potential. It is also one of the most economical and effective means of improving seed quality. White elm (Vlmus Pumila) is one of the main afforestation species in our zone. With fast growth, strong resistance, high economic value and many other excellent features. Its distribution is very wide