보리의 이삭목 말림성 遺傳과 이의 多面發現 效果

Inheritance of twist neck of spike node and its pleiotropic effects in barley

This experiment was conducted to determine the inheritance of twisted neck of spike node and to examine the associated characters with twisted neck in barley. The parents and F₂s of crossed lines between highly twisted neck variety Olbori and 5 nontwisted varieties and semi-twisted neck variety Saeolbori and 2 non-twisted varieties, were studied in field experiment at experiment farm, Dankook univ. Cheonan city, during 1988-1989 crop season. The results were as follows ; It was concluded that the twisted neck of barley was partially dominant and controled by additive effects of two ○○lymeric genes. There were varietal differences in twisted neck of barley mainly due to genetic background of parents. Broad sense heritability of twisted neck was relatively high and it was expected to high efficiency of selection. The characteristics of twisted neck of barley was negatively correlated with days to heading, length of lower internodes and 1,000 grain weight. Therfore the barley plants of twisted neck showed pleiotropic effects including early heading, lodging resistance due to shortening of lower internodes and light grain weight. There was no significant correlation between twisted neck and yield of barley, though twisted neck decrease 1,000 grain weight.