Use of synthetic products for the control mosquito vectors raises serious concern about their negative impact on environment, non-target organisms and human safety. Alternatively, use several natural products, particularly plant based essential oils have gained attention due to good efficacy ecofriendly nature. The adult knockdown effect repellent activities derived from three selected plants C...

The physiological breakdown of citrus fruits variously known as storage spot, pitting, or pox has presented a perplexing problem to growers and shippers ever since the storage and transportation of these fruits was undertaken on an extensive scale. This breakdown manifests itself in various forms of blemishes of the rind, depending on such factors as the inherent condition of the fruit, the tem...

An investigation was conducted in a six year old lemon (Citrus limon) garden during March to September 2007 to find out the effect of foliar spray with seven fungicides and a botanical on the severity of citrus scab (Elsinoe fawcettii) and dieback (Colletotrichum gloeosporioides) of the crop. The tested fungicides were Dinthane M 45 (0.30%), Rovral 50 WP (0.10%), Bavistin 50 WP (0.10%), Champio...

Karyotype, host preference, isozyzme patterns, morphometrics, and mating behavior of two burrowing nematode populations from Hawaii, one infecting Anthurium sp. and the second infecting Musa sp., were compared with Radopholus similis and R. citrophilus populations from Florida. The population from Anthurium sp. had five chromosomes (n = 5), and that from Musa sp. had four (n = 4). Neither of th...

'Persian' acid lime (PAL) is the most important triploid commercial citrus crop planted in the world. Little is known about the genetic variability of the selections used in Brazil. Therefore, 25 genotypes originating from the PAL, and three control species, Citrus sunki, C. limon, and C. aurantiifolia, were assessed using inter-simple sequence repeat (ISSR) and inter-retrotransposon amplified ...

An effi cient method for RNA extraction that leads to RNA high yield and purity is a technical issue relevant for development and optimization of molecular diagnostic methods aimed to detect viroid infections in citrus varieties. Residual contaminants may affect RNA detection depending on the molecular diagnosis approaches. This condition can be evaluated through RNA absorption spectrum analysi...