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近几年来,无性系与环境相互作用的演变引起了若干研究人员的重视。在杨树方面,哈德梅尔(1964年)在西德曾看到用16种无性系建立起来的13个种植场里,因相互作用而产生的树高变化是在种植4年后取得的,相当于无性系因子2/3那么大。在三角叶杨的土地上,阿范佐(1972年)曾观察到,苗木长到第二年时,遗传型与环境之间相互作用的因素,约为遗传型变化的因素的1/3。格罗斯居尔兹(1971年)
In recent years, the evolution of the interaction between clones and the environment has attracted the attention of several researchers. In Poplar, Haddamer (1964) in West Germany saw 13 tree farms built with 16 clones, and the tree height changes due to the interaction were obtained after 4 years of planting , Which is equivalent to the clonal factor 2/3 so big. On the patchouli fields, Arfanzo (1972) observed that the factor of interaction between genotypes and the environment at seedling growth in the second year was about one-third of the genetic variation. Groz Gullz (1971)