Abstract:PMCs of plants of hybrid F_1 Chinese Spring phlb mutant,between ChineseSpring and Ae.ovata had 12.882 Xta,0.938Xta at meiotic metaphase Ⅰ respectively.This revealed that phlb gene had strong effectiveness on inducing homoeologouspairing in hybrid between bread wheat and Ae.ovata.At the same time,th