Influence of barley yellow mosaic virus (BaYMV) on agronomic traits in naked barley cv. Baegdong.

摘要

This study was carried out to investigate the influence of barley yellow mosaic virus (BaYMV) on agronomic characters in naked barley. A naked barley cultivar, Beagdong was evaluated for disease systems in a naturally infected field at National Honam Agricultural Experiment Station. SPAD value of the plants infected by BaYMV was low as compared to healthy plants. Heading time was delayed by 10-11 days. Dry matter weight per plant, culm length, and number of spikes per plant were reduced in the infected plants by 75%, 68%, and 49%, respectively. Length of internodes was reduced in the first to the sixth internode from the upper part, particularly in the third to the fifth internodes which were generally reduced by 75-80%. Also, length of awn, number of kernels, 1000-kernel weight, and kernel weight per plant of the infected plants were reduced by 17-19%, 47%, 60%, and 78%, respectively. Lightness and redness for kernel colour value of Baegdong were low and high, respectively.