STUDIES ON THE BIOLOGY OF BLACK MOLD (ASPERGILLUS-NIGER) ON TEMPERATE AND TROPICAL ONIONS .1. A COMPARISON OF SOURCES OF THE DISEASE IN TEMPERATE AND TROPICAL FIELD CROPS
STUDIES ON THE BIOLOGY OF BLACK MOLD (ASPERGILLUS-NIGER) ON TEMPERATE AND TROPICAL ONIONS .1. A COMPARISON OF SOURCES OF THE DISEASE IN TEMPERATE AND TROPICAL FIELD CROPS
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DOI：
10.1111/j.1365-3059.1994.tb01591.x
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发表时间：
1994-06-01
期刊：
影响因子：
2.7
通讯作者：
PROCTOR, FJ
中科院分区：
文献类型：
--
作者：
HAYDEN, NJ;MAUDE, RB;PROCTOR, FJ
炎热热带条件下生长的洋葱作物（苏丹沙姆巴特）60-90% 的叶子上存在黑曲霉菌落，但温带条件下生长的洋葱作物（英国韦尔斯本）的叶子上只有 21% 存在黑曲霉菌落。苏丹使用的种子库存自然受到黑曲霉的污染，而英国使用的种子中不存在这种真菌。在英国种植的农作物中，用黑曲霉接种种子会导致田间洋葱植物（平均 83% 的植物受感染叶子）和球茎上真菌的发病率增加。在英国，A，niger在土壤和空气中并不常见，但它是苏丹土壤和空气菌群的主要组成部分。由于田间真菌发病率高，苏丹种植的大多数球茎在收获时都受到黑曲霉的污染。
Aspergillus niger colonies were present on 60-90% of the leaves sampled from onion crops grown under hot, tropical conditions (Shambat, Sudan), but only on 21% of leaves in crops grown under temperate conditions (Wellesbourne, UK). The seed stocks used in the Sudan were naturally contaminated with A. niger, whereas the fungus was absent from seed used in the UK. Inoculation of seed with A. niger resulted in an increase in the incidence of the fungus on onion plants (mean 83 % of plants with affected leaves) in the field and on bulbs in store in crops grown in the UK. In the UK, A, niger is infrequent in the soil and air, but it is a major component of the soil and air mycoflora in the Sudan. Most of the bulbs grown in Sudan were contaminated with A. niger at harvest because of the high incidence of the fungus in the field.