RESPONSE OF WHEAT CULTIVARS TO DIFFERENT INOCULUM LEVELS OF ANGUINA TRITICI

M. R. Khan, M. Athar

Abstract


Inoculation of plants with 1000, 5000, 10,000, 15,000, 20,000 or 30,000 juveniles of Anguina tritici suppressed the number, length and weight of ears and weight of grains/plant of six wheat cultivars. The nematodes densities (except 1000 juveniles) induced characteristic rolling and crinkling of leaves and formation of seed galls or cockle hernels being greatest with 30,000 juveniles/pot. The three highest inoculum levels caused increasingly significant decline in the yield parameters of the tested cultivars. Reduction in weight of grains/plant at these inoculum levels were 6-18%, 12-28% and 24-43%, respectively. The greatest yield loss (43%) was recorded with cv. Lokone but maximum cockles were recorded on cv. HUW-234. Seed gall formation on the cultivars was significantly different from each other.

Full Text:

PDF