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《Mycosystema》 2001-02
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ZHU Jie-Hua YANG Zhi-Hui CAO Ke-Qiang FAN Mu-Zhen LIU Ying-Chao LIU Jun-Ling (Department of Plant Pathology, Agricultural University of Hebei, Baoding 071001)  
Isolate combination, stems and leaves of potato and environment factor affecting sexual reproduction of Phytophthora infestans in plants were studied. Detached leaves and stems were coinoculated with sporangia of three combinations of A1 and A2 mating-type. Some A1+A2 isolate combinations are more reproductive than others. The numbers of produced oospore in the detached leaves were more than those in the stems. A1 and A2 sporangium proportion markedly affected the oospore formation quantity. The ratio 1:1 caused the largest production of oospores. The continuous free moisture was essential to oospore formation. The number of oospore in potato cultivars with different resistance level was different markedly. When leaf discs of 7 cultivars were inoculated, numbers of oospores were highest in cultivars with medium resistance level. On the contrary, the numbers of oospores were lowest in cultivars with high resistance level.
【Fund】: 河北省自然科学基金项目!(300111)
【CateGory Index】: S432
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Chinese Journal Full-text Database 10 Hits
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6 Zhang Jiaen (South China Agricultural University, Guangzhou,510642) Xu Qi (Institute of Soil Science ,The Chinese Academy of Sciences, Nanjing,210008);THE RESTORATION AND RECONSTRUCTION OF DEGRADED SOILS IN THE THREE GORGE RESERVOIR AREA[J];RESOURCES AND ENUIRONMENT IN THE YANGTZA BASIN;1998-03
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8 Li Wei(Institute of Agro-physics, Plant Physiology and Biochemistry HAAFS, Shijiazhuang 050051)Zhang Zhiming; Li Chuan(Department of Plant Protection,HAU,Baoding 071001)Gu Zenghui(Plant Protection Station of Shijiazhuang, Shijiazhuang 051003);Study on the Resistance of Phytophthora infestans in Potato to Metalaxyl[J];JOURNAL OF AGRICULTURAL UNIVERSITY OF HEBEI;1998-03
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