Abstract
For progress in breeding for barley scald resistance, a number of varieties originated from various regions of the world were screened by inoculation test using the pathogen cultures collected from the Hokuriku district. Effective genotypes to several different cultures were found in Turkish and Ethiopian varieties, which had several genes located on chromosome 3. Considerable pathogenic specialization was also confirmed in the pathogen populations. In order to improve the yield potential in a rice variety, vascular bundle system was extensively studied in Asian varieties, and the remarkable difference was detected between Indica-and Japonica-type and also within Japonica-type. Such differences were considered to be new selection objective for higher yield potential. Against the remarkable natural disasters in 2004 in Niigata prefecture, the author suggested new prediction method of damage in rice field using satellite image analysis through the joint work with different research field in Niigata University.
