普通小麦－华山新麦草异附加系的选育及细胞遗传学研究  

Breeding and Cytogenetic Study of Triticum aestivum-Psath yrostachys huashanica Alien Addition Lines

作　　者：陈漱阳[1] 侯文胜[1] 张安静[1] 傅杰[1] 杨群慧[1] 

机构地区：[1]中国科学院西北植物研究所

出　　处：《Acta Genetica Sinica》1996年第6期447-452,共6页

摘　　要：利用普通小麦与华山新麦草（２ｎ＝１４，ＮＮ）杂交与回交产生的七倍体杂种（ＡＡＢＢＤＤＮ，２ｎ＝４９），再与普通小麦回交，即产生单体附加（２ｎ＝４３），当以七倍体作父本时，产生单体附加的频率（２４．２％）高于七倍体作母本的频率（１２．２８％）。单体附加自交产生二体附加的频率为７．１９％。不同附加系的细胞学稳定性有差异，并随着逐代选择而有所提高。Heptaploids were obtained by back crossing(common wheat×P. huashanica) F1 with common wheat. The disomic addition plants were produced by crossing the heptaploids with common wheat followed by selfing BC1F1 hybrids and selecting 2n=43 plants. If the heptaploid was used as male, the frequency of monosomic addition (24.2%) was higher than that if the heptaploid was used as female (12.28%). The frequency of disomic addition plants derived from selfing monosomic addition plants was 7.19% .The cytological stabilities among addition lines were different and increased with generations.

关 键 词：小麦 华山新麦草 异附加系 细胞遗传学 

分 类 号：S512.103.2[农业科学—作物学]