کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4506200 1624338 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Epidemiology of cashew anthracnose (Colletotrichum gloeosporioides Penz.) in Mozambique
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم زراعت و اصلاح نباتات
پیش نمایش صفحه اول مقاله
Epidemiology of cashew anthracnose (Colletotrichum gloeosporioides Penz.) in Mozambique
چکیده انگلیسی


• We confirmed by PCR the identity of cashew anthracnose pathogen.
• Anthracnose incidence and severity are associated by an exponential function.
• The abundance of inoculum and epidemics are expressed by the equation.
• Disease spread was associated with showers and it varies with cashew types.
• The use of leaf incidence for easy disease assessment is recommend.

Anthracnose of cashew (Anacardium occidentale) was studies on various genotypes and locations in Mozambique. Colletotrichum gloeosporioides was identified as the anthracnose causal agent using polymerase chain reaction. The relationships between incidence and severity of anthracnose on cashew genotypes were statistically analyzed by regression. Anthracnose leaf incidence, which is practically easy to evaluate, was consistently associated with leaf severity, and their relationships can be estimated using the restricted exponential function across locations, crop seasons, genotype and fungicide trials. Pooled data enabled estimation of initial incidence of 1.43% with percentage variance accounting for 83.2 and standard error of 8.3. By computing incidence data into the summary equation, 24 changes of 0, 1, 5, 10 and 40%, resulted in changes of severity estimates of 0.01, 0.05, 0.10, 0.50 and 1.00%, respectively. The maximum disease incidence was estimated as 80% when the severity reached only 5%. Increase in severity was observed afterward, approached a maximum of 25% when leaf detachment is observed. The use of incidence data for epidemic comparisons, genotype and fungicide evaluation in cashew orchards is recommended. Anthracnose incidence on leaves however, could not predict incidence on nuts.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Crop Protection - Volume 49, July 2013, Pages 66–72
نویسندگان
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