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选用来自中国18个省、市,12个小种分属于9个不同谱系的30个具有广谱毒性的稻瘟病菌株,人工接种于已知抗瘟基因型的品种(系)及中国20世纪90年代新育成的部分杂交稻和常规早籼、晚粳品种上进行水稻抗病性鉴定。通过具有广谱毒性并能识别抗病基因的30个菌株,与具有不同抗性类型并携带有不同或与之相连锁的抗性基因的品种及已知抗性基因的国际鉴别品种进行比较,以期推测某些中国品种的抗性基因。结果表明,部分优异抗瘟材料及新育成的杂交稻组合和常规早籼、晚粳稻品种(系)能抗多数近年采集分离的田间致病菌株,是育种和大面积推广种植的良好材料。
Thirty broad-spectrum virulent strains of Magnaporthe grisea, belonging to 9 different lineages, were collected from 18 provinces and cities in China. The strains were inoculated into the known genotypes of blast resistance and lines in China in the 20th century Identification of rice disease resistance was carried out on some new hybrid rice and conventional early indica rice and late japonica rice cultivated in the age. By comparing the 30 strains with broad-spectrum toxicity and recognizing disease-resistance genes, the varieties with different resistance types and carrying different or linked resistance genes and the internationally identified varieties of known resistance genes, In order to speculate resistance genes of some Chinese varieties. The results showed that some excellent blast-resistant materials, newly-developed hybrid rice combinations, and conventional early-indica and late-japonica varieties (lines) were resistant to most of the field-acquired pathogenic strains isolated in recent years and were good materials for breeding and large-scale popularization.