论文部分内容阅读
在玉米杂交种选育过程中,往往骨干系的作用表现得很突出。新乡地区农科所于1961年育成525系后,各单位相继以此系为亲本的一方,育成一批单、双交种,如新单1号、郑单1号、泰单71、豫农704等;当群单105、101、103等优良单交种开始在玉米生产上试种示范以后,育种工作者逐渐认识到 G_(103)系的优点,便用它组配了许多组合,成功地育成如同单7号、原单1号、唐单4号等。类似的情况在国外也屡见不
In the corn breeding process, the role of the backbone of the performance is very prominent. Xinxiang Regional Institute of Agriculture in 1961 bred 525 Department, all units as the Department of one of the parents, bred a group of single and double pay, such as the new single 1, Zheng Dan No. 1, Thai single 71, Henan Agriculture 704, etc .; when the single group 105,101,103 and other excellent single cross began to test demonstration of corn production, breeders gradually realized the advantages of the G_ (103) system and used it in combination with many combinations to succeed Bred as a single on the 7th, the original single No. 1, Tang Dan No. 4 and so on. A similar situation is not uncommon in foreign countries