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刺槐优树是按表型选择的,而树木的表型是遗传基础和环境条件相互作用的结果。为了确定优树的表型是遗传基础的作用,还是受环境因素的影响;另外便于在不同地区选出的优树中优中选优,就需要对优树进行表型测定。而无性系测定是表型测定方法之一,此种方法简单,不经过有性过程,遗传基础单一,可以准确地鉴别遗传和环境对表型的作用,缩短测定时间,及早淘汰不良单株,逐步提高刺槐的遗传品质。 现将我区选择的十二株刺槐优树无性系,结合营造种子园,进行比较鉴定。
Acacia acuminata is selected by phenotype, whereas the phenotypic characteristics of trees are the result of the interaction between genetic basis and environmental conditions. In order to determine the superior tree phenotype is the role of genetic basis, or by the environmental factors; In addition to facilitate the selection in different regions of the superior tree in the selection of excellent, you need to superior tree phenotypic determination. Clonal determination is one of the phenotypic determination methods, this method is simple, without a sexual process, a single genetic basis, you can accurately identify genetic and environmental effects on the phenotype, shorten the determination of time, early out of bad plants, Gradually improve the genetic quality of black locust. Now I chose the region 12 acacia tree superior clones, combined with the creation of seed orchard, for comparative identification.