Abstract
F2 and F3 populations of hybrid between a Chinese variety, Reishiko, and a Japanese variety, Sekiyama 2, were analyzed. Reishiko has a dominant gene (Pi-k) controlling resistance to strains of the blast fungus. Ken 54-20 and P-2b, a dominant gene for colour of palea and lemma, glutinous endosperm gene wx, and a recessive gene for yellow seedling. Sekiyama 2 has a dominant gene (Pi-i) controlling resistance to strains of the blast fungus, P-2b and Ina 72, a dominant gene different trom one of Reishiko for colotlr of palea and lemma, non-glutinous endosperm gene Wx, and a recessive gene, different from one of Reishiko and functioning complementally with one of Reishiko, for yellow seedling. There are no linkage relationships among these genes found in both the varieties except of a linkage (26.9±8.5%) between gene for colour of palea and lemma, and gene for glutinous endosperm. This gene for colour of palea and lemma in Reishiko was considered to be same as C found in earlier studies.
