四川玉米小斑病菌交配型组成与育性分析
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孙小芳,刘敏,潘婷敏,龚国淑
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Mating Type and Fertility of Cochliobolus heterostrophus Causing Southern Corn Leaf Blight in Sichuan Province
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SUN XiaoFang,LIU Min,PAN TingMin,GONG GuoShu
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表5 不同年份玉米小斑病菌交配型及有性世代形成情况
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Table 5 Mating type and fertility of C. heterostrophus isolates from corn southern leaf blight during 2013-2018
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| 采样年份 Sampling year | 采样点数 Number of collection sites | 测试菌株数 Number of tested isolates | MAT1-1菌株数Number of isolates of MAT1-1 | MAT1-2菌株数Number of isolates of MAT1-2 | MAT1-1﹕MAT1-2 | 可育菌株数Number of fertile isolates | 可育菌株率
Percentage of fertile isolates (%) | 不同育性水平的菌株数（出现频率）
Number of isolates with different fertility levels (Frequency, %) | 高
High | 中
Medium | 低
Low | 不育
Sterile | | 2013 | 29 | 113 | 63 | 50 | 1.13﹕1 | 88 | 77.88 | 8 (7.08) | 23 (20.35) | 57 (50.44) | 25 (22.12) | | 2014 | 9 | 28 | 14 | 14 | 1﹕1 | 22 | 78.57 | 4 (14.29) | 8 (28.57) | 10 (35.71) | 6 (21.43) | | 2015 | 16 | 60 | 28 | 32 | 1﹕1.14 | 56 | 93.33 | 4 (6.67) | 26 (43.33) | 26 (43.33) | 4 (6.67) | | 2016 | 18 | 39 | 17 | 22 | 1﹕1.29 | 37 | 94.87 | 4 (10.26) | 11 (41.03) | 22 (43.59) | 2 (5.13) | | 2017 | 23 | 215 | 123 | 92 | 1.34﹕1 | 201 | 93.49 | 26 (12.09) | 59 (27.44) | 116 (53.95) | 14 (6.51) | | 2018 | 8 | 89 | 41 | 48 | 1﹕1.17: | 79 | 88.76 | 21 (23.60) | 22 (24.72) | 36 (40.45) | 10 (11.24) | | 总计Total | 103 | 544 | 286 | 258 | 1.11﹕1 | 483 | 88.79 | 67 (12.32) | 149 (27.39) | 267 (49.08) | 61 (11.21) |
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