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單爲生殖에 의한 감자 半數體 植物 誘起 Ⅰ. 母本 및 花粉親別 無斑點 種字의 出現頻度
Il Gin Mok(睦一振),Hyun Mook Cho(趙賢默) 한국육종학회 1988 한국육종학회지 Vol.20 No.2
Haploids from tetraploid potato cultivars were extracted through parthenogenesis after interploid crosses using pollinators homozygous for embryo spot. Thirteen tertraploid cultivars including Irish Cobbler, Superior, Dejima were used as female seed parents. As male pollinators, 1.22, Ivp 35 and other HES clones were used. All of these clones are homozygous for embryo spot. Brick cultivation of female plants and supplemented illumination for long day length suppressed tuber formation and increased flowering and berry setting. Efficiency of pollination was much higher in spring than in fall. The percentages of berry set were higher in varieties Superior, Irish Cobbler, W726, and Konafubuki. The number of seeds edper fruit was higher in Superior and Shepody, 13.6 and 11.6 seeds, respectively. The clone 1.22 was the most effective pollinator with an average of 2.7 non-embryo spot seeds per berry.
Hune Mook Cho(趙賢默),Il Gin Mok(睦一振),Yeung Nam Song(宋隆男),Byung Hee Hahn(韓秉熙) 한국육종학회 1985 한국육종학회지 Vol.17 No.4
To select excellent diploid parental lines for potato breeding, the mechanisms of 2n pollen formation, the frequency distribution of the mechanisms, the frequency of 2n pollen, and the frequency distribution of pollen grain diameter were investigated in eighty-two progeny clones derived from W 5337.3 × W5295.7. In twenty-nine progeny clones, the frequency of stainable 2n pollen was higher than 30 percent. The size of n and 2n pollen was clearly divided in the range of 17.5-25.0μ and 27.5-37.5μ, respectively. The mechanisms of 2n pollen formation in the eighty-two progeny clones were found to be parallel spindles(ps), premature cytokinesis(pc) and synaptic mutant(sy). In some clones they were formed by the combination of ps+ pc and ps+ sy