论文部分内容阅读
为了提高含纤维素的木材产量,遗传分析就成为最理想的选种方法。在苏联的拉脱维亚共和国采用了提高云杉速生的下列方法:选择具有晚停止生长的植株来创建种子园,选择一定的杂交亲本来创建两个无性系的种子园;选择停止生长晚和生长势又高的无性系(无性营养繁殖时后代
In order to improve the yield of cellulose-containing wood, genetic analysis has become the ideal method of selection. In the Republic of Latvia, the Soviet Union adopted the following methods to increase the speed of spruce: choosing plants with late-stopped growth to create seed orchards and choosing certain hybrid parents to create two clonal seed orchards; choosing to stop growing late and growing again High clones (asexual vegetative propagation later generations