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Chinese Agricultural Science Bulletin ›› 2017, Vol. 33 ›› Issue (35): 1-5.doi: 10.11924/j.issn.1000-6850.casb16120131

Special Issue: 水稻 农业生态

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Resistance Evaluation of Rice Varieties to False Smut in Southern Heilongjiang

来永才,,,, and   

  • Received:2016-12-28 Revised:2017-02-16 Accepted:2017-02-24 Online:2017-12-14 Published:2017-12-14

Abstract: To discuss the resistance level and the occurrence of rice false smut in rice planting area of southern Heilongjiang, the natural infection and artificial inoculation were used to analyze the hole disease rate, spike disease rate and false smut balls of 62 conventional japonica rice varieties. The results indicated that: the hole disease rate range was 0.89%-90.00%, the average hole disease rate was 22.49%; the spike disease rate range was 0.04%-14.11%, the average spike disease rate was 2.63%; the disease index range was 0-5.02, the average disease index was 1.08.‘Songjing14’,‘W01’and‘W38’were selected as immune varieties and 42 varieties were identified as resistant varieties, which accounted for 87.10% of the total, and the total ratio of resistant to susceptible varieties was 54:8. Most rice varieties in southern Heilongjiang were resistant to rice false smut, and the resistance difference existed among rice varieties.

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