| 1. | Compared to 042bm , the noea deletion mutant 042bma - km showed different degree of increase in nodule number , weight of nodule nodule and plant top dry weight on cultivars of putong zihua , baoding , ningxia , baifa and aohan , but decrease on milu . however , this mutant has no significant change in ability to nodulate cultivars of huanghou and zahua . hence , noea is involved in cultivar - specific nodulation 与苜蓿中华根瘤菌042bm相比,敲除noea的突变株042bma - km在普通紫花、保定、宁夏、百发和傲汉苜蓿品种上的结瘤数、根瘤鲜重和植株地上部分的干重都有不同程度的增加,而在秘鲁苜蓿品种上的结瘤数和植株地上部分的干重明显下降,在皇后和美国杂花苜蓿品种上则没有明显的变化。 |