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| 1 | Morphological characterization of fungi associated with the ascochyta blight complex and pathogenic variability of Mycosphaerella pinodes on field pea crops in central Alberta显示文摘Field pea crops in central Alberta were surveyed for ascochyta blight from 2011 to 2012 and fungal isolates were recovered from foliar lesions on selected plants. Cultural and microscopic characterization of the 275 isolates obtained revealed that 272 were of Mycosphaerella pinodes and three were of Phoma medicaginis var. pinodella. Ascochyta pisi or Phoma koolunga were not identified. Isolates of M. pinodes were divided into two groups,GI and GII, based on visual assessment of culture characteristics. GI isolates(light to dark, mostly gray colony color; pycnidial distribution radial and concentric; conidia10.5–14.5 × 4.2–6.2 μm most with one septum, occasionally two, constricted at the septum;spore mass light buff to flesh color) were predominant(83%), while GII isolates(dark to gray colony color; pycnidia abundant; conidia 8–16 × 3.5–6.2 μm most with 1 septum, constricted at the septum; spore mass light buff to flesh color) were less common(17%). The cultures of GII isolates were similar to recent descriptions of A. pisi, but they differed in spore color. In a host differential study, 13 pathotypes of M. pinodes were identified from 110 single-spore isolates. Pathotype I was predominant(88 isolates) and virulent on all nine differential genotypes. The other pathotypes(pathotypes II–XIII) were rare(1–6 isolates of each).Comparison of the present results with earlier studies suggests that pathotype I has been prevalent for many years, and that its aggressiveness on the host differentials has increased over time. Emphasis should be placed on breeding for resistance to M. pinodes in field pea cultivars intended for deployment in central Alberta. | Hafiz Ahmed Kan-Fa Chang Sheau-Fang Hwang Heting Fu Qixing Zhou Stephen Strelkov Robert Conner Bruce Gossen | 2015 | The Crop Journal2015，3，1： | 1 |
| 2 | Aphanomyces euteiches: A Threat to Canadian Field Pea Production显示文摘豌豆(Pisum sativum var. arvense L.)是世界上重要的豆科作物。豌豆籽粒蛋白质含量很高,并能提高土壤中有效氮的含量。由一种土传卵菌根腐丝囊霉(Aphanomyces euteiches Drechs.)引起的Aphanomyces根腐病(ARR),在包括加拿大在内的许多地区对豌豆生产构成严重威胁,在潮湿的土壤条件下引起严重的根损伤、萎蔫,造成大幅度减产。在有利于病害发生的条件下,由于病原体卵孢子的寿命长,在豌豆任何生长阶段都可以侵染豌豆植株,传统病害防控措施(如作物轮作和拌种处理)不能完全防治病害的危害。培育部分抗病或耐病豌豆品种可能是分析豌豆中根腐丝囊霉变异性和生理转化性、提高病害防治效果的有效途径。因此,检测抗病数量性状基因座(QTL)对豌豆育种计划至关重要。本文对根腐丝囊霉的致病特点、ARR防控措施以及部分与抗性相关的QTL进行了综述。 | Longfei Wu Kan-Fa Chang Robert L. Conner Stephen Strelkov Rudolph Fredua-Agyeman Sheau-Fang Hwang David Feindel | 2018 | Engineering2018，4，4： | 1 |
| 3 | Comparative virulence of chlorosis-inducing races of Pyrenophora tritici-repentis显示文摘 | Stephen E. Strelkov Lakhdar Lamari Rachid Sayoud Richard B. Smith | 2002 | Canadian Journal of Plant Pathology2002，，1： | 1 |
| 4 | Characterization of the fungi associated with ascochyta blight of field pea in Alberta, Canada显示文摘 | Jianfeng Liu Tiesen Cao Jie Feng Kan-Fa Chang Sheau-Fang Hwang Stephen E. Strelkov | 2013 | Crop Protection2013，，： | 1 |
| 5 | Influence of water activity and temperature on growth and mycotoxin production by isolates of Pyrenophora tritici-repentis from wheat显示文摘 | Noureddine Bouras Yong Min Kim Stephen E. Strelkov | 2009 | International Journal of Food Microbiology2009，，2： | 1 |
| 6 | The anthraquinone catenarin is phytotoxic and produced in leaves and kernels of wheat infected by Pyrenophora tritici-repentis显示文摘 | Noureddine Bouras Stephen E. Strelkov | 2008 | Physiological and Molecular Plant Pathology2008，，1： | 1 |
| 7 | Infection of canola by secondary zoospores of Plasmodiophora brassicae produced on a nonhost显示文摘 | Jie Feng Qiang Xiao Sheau-Fang Hwang Stephen E. Strelkov Bruce D. Gossen | 2012 | European Journal of Plant Pathology2012，，3： | 1 |
| 8 | Proteome-level changes in two Brassica napus lines exhibiting differential responses to the fungal pathogen Alternaria brassicae显示文摘 | Nidhi Sharma Muhammad Hafizur Rahman Stephen Strelkov Mohan Thiagarajah Vipan K. Bansal Nat N.V. Kav | 2006 | Plant Science2006，，1： | 1 |
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