ABSTRACT Triploid watermelon is highly appreciated by the most demanding markets, and due to its small size, it ideal for consumption families. With growth in areas cultivated with seedless worldwide, there a demand development of tetraploid germplasm obtain triploid hybrids better agronomic performance. This study performed two tests induce polyploidy powdery mildew–resistant line developed Em...

ABSTRACT Thirteen aphid species were tested for their ability to transmit Pennsylvania isolates of Plum pox virus (PPV) collected in Columbia (PENN-3), Franklin (PENN-4), and York (PENN-7) Counties, PA. Four species, Aphis fabae, A. spiraecola, Brachycaudus persicae, and Myzus persicae, consistently transmitted PPV in preliminary transmission tests. Two species, Metopolophium dirhodum and Rhopa...

Powdery mildew was observed on 20 genotypes of Vigna unguiculata subsp. sesquipedalis (yardlong beans) and 33 V. radiata (mungbean) in Los Baños, Laguna, Philippines. collected then subjected to molecular characterization identify the species associated with disease. Based combined microscopic observations identification, causing powdery yardlong bean mungbean Podosphaera xanthii (Castagne) U. ...

Abstract Powdery mildew, caused by Podosphaera xanthii , is a devastating disease that can wipe out cucumber crop in optimal weather conditions. Disease control management depends mainly on fungicides to inhibit the pathogen. However, they have fatal side effects most organisms. This study evaluated use of natural products as safe alternatives for controlling powdery mildew. The effectiveness a...

The cucurbit vegetables, including cucumbers, melons and pumpkins, have been cultivated for thousands of years without fungicides. However, their seed germination stage is prone to be infected by soil-borne fungal and oomycete pathogens. Endophytes are symbionts that reside inside plant tissues including seeds. Seed endophytes are founders of the juvenile plant microbiome and can promote host d...

in the framework of a study on the powdery mildew fungi in iran, several infected plant specimens were collected from around the country during 2001-2009. based on the results of the study erysiphe quercicola on quercus sp. and e. malvae on malva sp., golovinomyces ambrosiae on helianthus spp., golovinomyces fischeri on senecio glaucus, are the newly reported for iranian mycobiota. in addition,...