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무우의 抽臺, 開花 및 其他 몇가지 形質의 遺傳에 關한 硏究
W. M. YOON(尹禾模),H. K. PYO(表鉉九) 한국육종학회 1977 한국육종학회지 Vol.9 No.1
This study was carried out to learn some informations for selection by investigating the inheritance of some characters and their heritabilities in the crosses between Korean and Japanese type of radishes. Red color showed dominance to colorless in hypocotyl and inflorescence junction, and it seemed to be controlled by one gene difference. The color of root-top was supposed to be governed by two duplicate genes. Continuous distributions were shown such morphological characters as number of parted leaflets, root length, root diameter and root shape index in F₂ population. It was assumed that polygenes might be related with the number of parted leaflets, root lenth and root diameter and a few major and minor genes with root shape. Polygenic control might be observed in root weight which was influenced, to a large extent, by the environmental conditions. Earliness was proved to be almost complete dominance in days to bolting and flowering. Means of F₂ populations were inclined to earliness and the distribution showed like a discontinuous curve, thus a few major genes governing bolting and flowering, and the minor genes deranging the activities of major genes. The narrow sense of heritabilities for seven characters mentioned above ranged from 0.473 to 0.990. In particular, those for days to bolting and flowering were high. Root diameter and root weight demonstrated the high heterotic effects and the latter severe inbreeding depression.
An In vitro pollination technique for detecting self-incompatibility in cruciferous crops
S.S. LEE(李洙聖),J.Y. YOON(尹震映),H.M. YOON(尹禾模) 한국육종학회 1982 한국육종학회지 Vol.14 No.3
An in vitro pollination procedure was developed as an efficient technique for assaying self-incompatibility of Cruciferous crops. Excised flowers were pollinated in the lab, kept in constant relative humidity chambers at 25℃, and the pollen tubes in the style were counted using fluorescence microscopy after staining with aniline blue the next day. A relative humidity (RH) of 98% was optimum for differentiating self-incompatibility vs. self-compatibility with excellent reproducibility. The number of pollen tubes penetrating to stigma under 98% RH was different from plant to plant and age to age of the flower. However. this variation for flowers of the same plant was highly correlated with seed set. Strongly self-incompatible plants could be selected by selecting for the minimum number of pollen tubes across a wide range of flower age for individual plants. This technique seemed to be widely applicable in the study of self-incompatibility.