Evaluation of safflower varieties for resistance to the fungal pathogen, Colletotrichum acutatum

Abstract

Víchová J., Staňková B., Pokorný R., Vejražka K. (2013): Evaluation of safflower varieties for resistance to the fungal pathogen, Colletotrichum acutatum. Plant Protect. Sci., 49: 132-136.The influence of plant growth stage, inoculum density, and variety on the disease severity and incidence were studied. Our results indicated that growth stage of the plant had no influence on infection rate, as the pathogen attacked 100% of tested plants. When applying three different inoculum concentrations to three weeks old safflower plants, no statistical differences were recorded, disease incidence ranged 32.0-47.0%. In this test, the 3 rd and 4 th evaluated leaves (the youngest) were infected more intensively than were the 1 st and 2 nd leaves. Among 11 safflower varieties tested for resistance to this pathogen, cultivar CW 1221 manifested the highest resistance with 8.3% infection, whereas two cultivars, Sabina and AC Sunset, were found to be the most susceptible with 90.0 and 83.3% infection.

Antimicrobial Activity of Controlled-Release Chlorine Dioxide Gas on Fresh Blueberries

“…Postharvest losses of fresh fruits and vegetables are estimated to be about 20% in the United States (20). C. acutatum is one of the major pathogens of fruit crops, causing significant economic losses of subtropical and tropical fruits worldwide (36). Most parts of the plant can be affected: from the roots to the leaves, blossoms, twigs, and fruit, causing diseases, such as crown root rot, defoliation, blossom blight, and fruit rot (29).…”