Apple scab caused by the pathogenic fungus Venturia inaequalis causes significant damage to apples. The creation of apple-scab resistant varieties is considered an alternative pesticide-based management. To evaluate R gene inheritance, 862 apple hybrid samples were analyzed and divided into populations depending on resistance genes (Rvi6 Rvi5) present in parents’ genotypes their combinations. f...

Anthracnose caused by Colletotrichum lindemuthianum is one of the most critical diseases in common bean (Phaseolus vulgaris L.). The characterization and localization pathogenic fungal races are essential for understanding pathogen population dynamics developing resistant cultivars. Here, we discussed relationship between diversity C. resistance genes against anthracnose disease. Indeed, severa...

In order to investigate the inheritance pattern of indeterminate growth in Vigna radiata, various related traits were studied. The techniques used for the purpose were generation mean and variance analyses. Narrow sense heritability estimates were also computed. Four out of fifty greengram accessions were selected during preliminary screen trial based on DDd2 and DDh2 values. Two cross combinat...

the review focuses on recent progress in the breeding of small grain cereals (barley, wheat, oats) for resistance to the barley yellow dwarf virus (BYDv). first, the symptomatology of barley yellow dwarf (BYD) disease is briefly described and the genome of BYDv, its serotypes and mechanisms of its replication and translation in host plants are characterized. great attention is paid to the descr...

Twelve alfalfa genotypes that were selected for biomass under salinity, differences in Na and Cl concentrations in shoots and K/Na ratio were evaluated in this long-term salinity experiment. The selected plants were cloned to reduce genetic variability within each genotype. Salt tolerance (ST) index of the genotypes ranged from 0.39 to 1. The most salt-tolerant genotypes SISA14-1 (G03) and AZ-9...

Reniform nematode (Rotylenchulus reniformis) has become a major pest of cotton in the mid-south area of the United States. Resistance genes, Ren1 and Ren2 from Gossypium longicalyx and Gossypium aridum, respectively, have been identified and introduced into Upland cotton (Gossypium hirsutum). We developed an F2 population of 184 progeny plants by crossing Ren2 -containing plants with a LONREN-2...

Rice is the staple food for more than half of the world’s population. Although rice production has doubled in the last 30 years as a result of the development of high-yield, widely adaptable, resource-responsive, semi-dwarf varieties, the threat of a food crisis remains as severe as it was 60 years ago due to the ever-increasing population, water scarcity, labor scarcity, shifting climatic cond...