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根据小叶杨种内变异复杂的特点,在天然林中随机选择52株树木培育无性系,经过重复性田间试验,选育出3个优良无性系M09,M29和M501年生苗高分别达到196.3 cm、189.3 cm和197.7 cm,超过对照70%以上,生长表现优异,且成活率高,形态差异显著,易于鉴别,有重要的推广应用价值。
According to the complex variation characteristics of Populus tomentosa, 52 trees were randomly selected from natural forest to cultivate clones. Repeated field experiments were conducted to select three excellent clones M09, M29 and M501, 189.3 cm and 197.7 cm, more than 70% more than the control, excellent growth performance, and high survival rate, significant morphological differences, easy to identify, there is an important promotion and application value.