ABSTRACT The frequency of sexual reproduction has a profound effect on the population structure and the adaptive potential of a facultatively sexual parasite. Little is known about the relationship of quantitative host resistance to the frequency of sex in pathogens. We sampled over 5,000 fungal fruiting bodies from eight different wheat cultivars over a 3-year period. The cultivars possessed v...

Rare earth elements have been tested in control of plant diseases. Lanthanum (La) was the Alternaria solani (in vitro) and tomato early blight vivo) using concentration 0; 0.1; 0.2; 0.4 0.8 g L-1. In vitro, were diluted V8 culture medium evaluated for mycelial growth rate index (MGRI) pathogen sporulation. vivo, 24 hours after application inoculate inoculation, leaflets collected quantification...

Late Leaf Spot (LLS) disease is caused by Phaeoisariopsis personata, a devastating that significantly affects groundnut (Arachis hypogaea L.) production worldwide. This research aimed to investigate the progress in resistant and susceptible genotypes under green house conditions with artificial inoculations. The four popularly growing cultivars Andhra Pradesh i.e., Kadiri-6 (K6), Dharani, Harit...

Penelitian ini bertujuan untuk mengetahui pengaruh jenis jamur patogen gulma terhadap pertumbuhan tanaman budidaya. dilaksanakan di Laboratorium Perlindungan Tanaman dan Experimental Farm, Fakultas Pertanian, Universitas Jenderal Soedirman, Purwokerto selama empat bulan. Rancangan yang digunakan adalah rancangan petak terbagi (split-plot) dengan tiga ulangan. Petak utama terdiri atas Fusarium o...

Fusarium wilts are widespread diseases affecting most agricultural crops. In absence of efficient alternatives, sowing resistant cultivars is the preferred approach to control this disease. However, actual resistance sources are often overcome by new pathogenic races, forcing breeders to continuously search for novel resistance sources. Selection of resistant accessions, mainly based on the eva...

The genetic basis of quantitative disease resistance has been studied in crops for several decades as an alternative to R gene mediated resistance. The most important disease in the potato crop is late blight, caused by the oomycete Phytophthora infestans. Quantitative disease resistance (QDR), as any other quantitative trait in plants, can be genetically mapped to understand the genetic archit...

Resistance to soybean rust (SBR), caused by Phakopsora pachyrhizi Syd. & Syd., has been identified in many soybean germplasm accessions and is conferred by either dominant or recessive genes that have been mapped to six independent loci (Rpp1 -Rpp6), but No U.S. cultivars are resistant to SBR. The cultivar DT 2000 (PI 635999) has resistance to P. pachyrhizi isolates and field populations from t...

Stem rust caused by Puccinia graminis f.sp tritici Erik. & E. Henn. is a highly destructive disease of wheat (Triticum aestivum L.). The effects of fungicide application on stem rust (Puccinia graminis tritici) epidemics and yield of three bread wheat varieties varying in reaction to the disease were studied in two major wheat growing and stem rust prone districts (Agarfa and Sinana) of Bale, E...