향미 품종의 방향성 유전

Inheritance of aroma in rice

This study was carried out to elucidate the inheritance of aroma in rice. Aromatic nature was tested with leaves of two aromatic/non-aromatic crosses and six crosses among aromatic cultivars. All F₁ hybrids of non-aromatic cultivar Hwaseongbyeo and aromatic cultivars, Sanghaehyanghyeolla, Miyakaori, Della, Selatus Malam, Manong Balay, Hyangmibyeo 1 and Chokoto were not aromatic and this seemed to indicate the recessive nature of the aroma in all tested rices. F₂ segregation ratio of 3 non-aromatic : 1 aromatic individual suggested that Sanghaehyanghyeolla and Miyakaori each contained a single gene for aroma. The finding that all F₁ hybrids among six aromatic rice cultivars were aromatic suggested that the aroma in Sanghaehyanghyeolla and Miyakaori may be controlled by the same gene known to be in Della and the aroma genes in Manong Balay and Chokoto are also allelic although the number of genes controlling the aroma in these cultivars are not known. No linkage was detected between the aroma gene(fgr) in Sanghaehyanghyeolla and two genetic markers(sug and v-8) located on rice chromosome 8.