First report of root rot caused by Phytophthora nicotianae in avocado trees ( Persea americana ) in Cuba
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چکیده
منابع مشابه
Quantifying the Severity of Phytophthora Root Rot Disease in Avocado Trees Using Image Analysis
Phytophthora root rot (PRR) infects the roots of avocado trees, resulting in reduced uptake of water and nutrients, canopy decline, defoliation, and, eventually, tree mortality. Typically, the severity of PRR disease (proportion of canopy decline) is assessed by visually comparing the canopy health of infected trees to a standardised set of photographs and a corresponding disease rating. Althou...
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A method with high success frequency for propagation of avocado is described. Embryonic axes of mature avocado seeds from six Floridian cultivars were excised and cultured in Murashige and Skoog (MS) medium containing growth regulators. Two types of cytokinins were used: benzyladenine (BA) and thidiazuron (TDZ). Explants were incubated in the dark for 7-10 days to reduce browning, then transfer...
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The sensorial qualities, the nutritional value, and the large amount of vitamins of the avocado justify the expansion of the fruit consumption. The nutritional value of avocado is due to its high lipidic (8.4%) and proteic (1.2%) contents, which may reach 30% of its pulp. Due to its chemical composition it also becomes appropriate for industrial purposes (CANTO; SANTOS; TRAVAGLIN, 1980; TANGO; ...
متن کاملEfficacy of Chaetomium Species as Biological Control Agents against Phytophthora nicotianae Root Rot in Citrus
Thailand is one of the largest citrus producers in Southeast Asia. Pathogenic infection by Phytophthora, however, has become one of major impediments to production. This study identified a pathogenic oomycete isolated from rotted roots of pomelo (Citrus maxima) in Thailand as Phytophthora nicotianae by the internal transcribed spacer ribosomal DNA sequence analysis. Then, we examined the in vit...
متن کاملCytochrome P-450 from the Mesocarp of Avocado (Persea americana).
The microsomal fraction from the mesocarp of avocado (Persea americana) is one of few identified rich sources of plant cytochrome P-450. Cytochrome P-450 from this tissue has been solubilized and purified. Enzymatic assays (p-chloro-N-methylaniline demethylase) and spectroscopic observations of substrate binding suggest a low spin form of the cytochrome, resembling that in the microsomal membra...
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ژورنال
عنوان ژورنال: New Disease Reports
سال: 2013
ISSN: 2044-0588,2044-0588
DOI: 10.5197/j.2044-0588.2013.028.009