Plum pox virus (PPV) is the causal agent of Sharka disease. Since its discovery, Sharka has been considered as a calamity in plum orchards. PPV is present worldwide in many Prunus species, causing great economic losses. In highly susceptible plum varieties, such as Požegača, PPV causes a premature fruit drop and reduces fruit quality, which leads to total yield loss. Eight PPV strains (PPV-M, P...

Upon initiation of ripening in avocado fruit (Persea americana Mill. cv Hass) with 10 microliters/liter ethylene, polysome prevalence and associated poly(A)(+) mRNA increase approximately 3-fold early in the respiratory climacteric and drop off to preclimacteric levels at the peak of the respiratory climacteric. The increase in poly(A)(+) mRNA on polysomes early in the respiratory climacteric c...

Of all the agricultural pests and diseases that threaten citrus crops, citrus canker is one of the most devastating. The disease, caused by the bacterium Xanthomonas axonopodis pv. citri, occurs in large areas of the world's citrus growing countries including India. At least 3 distinct forms or types of citrus canker are recognized. Among these, Asiatic form (Canker A) is the most destructive a...

We investigated the basis for fruit drop in walnut (Juglans regia L.) following bloom period applications of streptomycin as a potential control treatment for walnut blight, a bacterial disease incited by Xanthomonas campestris pv. juglandis (Pierce) Dye. Experiments were conducted on streptomycin-treated field plots of ‘Vina’ walnut. Four streptomycin treatments were applied at different times...

Tephritid fruit flies are recognized worldwide as the most important threat to horticulture (Allwood and Drew, 1997; Barnes, 2004; Ekesi and Billah, 2007). Sub-Saharan Africa (SSA) is the aboriginal home to 915 fruit fly species from 148 genera, out of which 299 species develop in either wild or cultivated fruit. They belong mainly to four genera: Bactrocera, Ceratitis, Dacus, and Trirhithrum (...

The existing gaps in yield potential, production of poor quality, un-attractive fruits and negligible export potential of quality litchi fruit are the main concerns. These need to be combated in modern day fruit production to meet the ever increasing demand to nourish the growing population and increasing the economic returns. Plant growth hormones play important role in the integrated developm...

Girdling effects on fruitlet abscission, leaf chlorophyll, chlorophyll a fluorescence and carbohydrate concentration in various flowering and vegetative shoots were studied during natural fruit drop in two Citrus cultivars. Irrespective of shoot type, girdling delayed fruitlet abscission, but only fruitlets borne on leafy shoots had increased final fruit set. Chlorophyll a fluorescence analysis...

The study was carried out in 2017 the semi-dwarf apple orchard established 2010 Kemalpaşa village Tokat province order to determine effect of AVG application different concentrations on pre-harvest fruit drop and quality Red Chief Braeburn cultivars. In study, 7 years-old trees cultivars grafted MM106 rootstock were used. AVG, at 0, 75, 150 225 mg L-1 combined with a Regulaid’ surfactant 0.1% v...

38 INTRODUCTION Fruit fl ies (Diptera: Tephritidae) includes about 4 300 species in almost 500 genera (White, 2006). It is amongst the largest families of Diptera and one of the most economically important. The larvae of many species develop in the seed bearing organs of plants. Several species are known to attack different types of commercially grown crops, causing considerable damage. The fem...