backcrosses的例句大全

Identification of Major Gene and Polygene Mixed Inheritance Model from Backcrosses or F_ ( 2:3) Families

利用回交或F（2∶3）家系世代鉴定数量性状主基因-多基因混合遗传模型

These NILs were obtained by 5 6 consecutive selective backcrosses.

这些近等基因系是通过5～6次连续的选择性回交获得的。

In order to improve the resistance of Jinshan B-1 to rice blast, we introduced Pi-9, a dominant gene with wide-spectrum resistance to rice blast, into Jinshan B-1 from donor line 75-1-127 via successive backcrosses with the help of molecular markers.

为了改良金山B-1的稻瘟病抗性，我们以水稻品系75-1-127为供体，通过标记辅助连续回交将显性广谱抗稻瘟病基因Pi-9导入到金山B-1中。已知Pi-2与Pi-9等位或紧密连锁。

In backcrosses, the seed-set rate of hybrids of A. ovata/ T. aestivum was 3.71% with T.

卵穗山羊草/小麦用小麦回交的结实率为3.71%；