嘉兴粳稻抗褐稻虱育种籼稻抗源的选择和利用

THE SELECTION AND UTILIZATION OF RESISTANCE SOURCES OF INDICA RICE TO BROWN PLANTHOPPER FOR JAPONICA RICE BREEDING IN JIAXING

用嘉兴田间采集的褐稻虱对籼型扰虫品种BG367-4进行苗期和成株期抗性鉴定,均表现为高抗(HR)。用作粳稻抗褐稻虱育种的抗性授体亲本,抗性传递力强,并表现为显性遗传,是籼粳杂交培育粳型抗虫品种的理想抗源。

BG 367-4,a selected variety of indica rice possessing high resis-tance both in seedling and adult stage to brown planthopper(BPH)Nilaparvata lugens(St(?)l)in Jiaxing rice area was used as a donorparent of BPH resistance to japonica rice.It is indicated that thisvariety is a desirable BPH resistance source for breeding the resistantjaponica rice varieties to BPH by sexual hybridization between indicaand japonica rice,owing to the high heritability of BPH resistanceand dominant inheritance expression.