Sampling for the Incidence of Aphid-Transmitted Viruses in Snap Bean
نویسندگان
چکیده
منابع مشابه
Sampling for the incidence of aphid-transmitted viruses in snap bean.
ABSTRACT Data collected in 2002 and 2003 on Alfalfa mosaic virus and Cucumber mosaic virus incidences of infection in commercial snap bean fields in New York State were used to develop relationships between disease incidence (p(low)) and sample size while accounting for the inherent spatial aggregation of infected plants observed with these two viruses. For a plan consisting of 300 sampled plan...
متن کاملIncidence, Spatial Patterns, and Associations Among Viruses in Snap Bean and Alfalfa in New York
Beginning in 2000, snap bean (Phaseolus vulgaris L.) crops exhibiting virus-like symptoms on the foliage (leaf distortion, yellow and green mottling, and mosaic) were increasing in frequency on a regional scale across the northern United States and Canada (10,20). These crops also produced fewer pods or pods that were either twisted or necrotic (hence unmarketable). Across the Midwest and north...
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this study investigates the cohesive devices used in the textbook of english for the students of psychology. the research questions and hypotheses in the present study are based on what frequency and distribution of grammatical and lexical cohesive devices are. then, to answer the questions all grammatical and lexical cohesive devices in reading comprehension passages from 6 units of 21units th...
Modeling temporal trends in aphid vector dispersal and cucumber mosaic virus epidemics in snap bean.
Cucumber mosaic virus (CMV) has become a major limiting factor in snap bean production in the Great Lakes region of North America, and epidemics have occurred more frequently since the soybean aphid, Aphis glycines Matsumura, was introduced. Major aphid vectors of CMV epidemics were identified by statistically relating their temporal dispersal trends to the incidence of CMV. Alates were monitor...
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ژورنال
عنوان ژورنال: Phytopathology®
سال: 2005
ISSN: 0031-949X,1943-7684
DOI: 10.1094/phyto-95-1405