矮生玉米自交系的选育方法主要有系谱法、回交法和聚合选择法。
Pedigree method, backcross method and convergent cross selection are used widely in dwarf maize breeding.
通过品种间杂交和系谱法选择,育成了甘兰型低芥酸油菜新品种“油研1号”和甘兰型“双低”油菜新品种“油研2号”。
By means of intervarietal crossing and linear selection, the new rape variety "Youyan No. 1" of low erucic acid and "Youyan No. 2" of "Double Low"(low erucic acid and low glusosiolate) have been bred.
回交亲本为7902-4和40354。杂种第二代用7902-4进行回交,回交第二代用40354再次回交,之后用改良系谱混合选择法进行选育。
Their F_2 is backcrossed with 7902- 4, and F_2 of this backcross is backcrossed again with 40354, and then selected by using the modified pedigree and bulk selection procedure.
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