三倍性西瓜種予採種に関する研究

概要

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In order to determine what proportion of diploid and tetraploid plants would produce, by open-pollination, as many triploid seeds as possible from mixplanting of diploid and tetraploid plants, 3 plots, each of them representing the ratios of 1(2x) : 1(4x), l(2x) : 3(4x) and 1(2x) : 8(4x) were laid out. The amount of triploid seeds differed among the 3 plots. The total number of triploid seeds obtained was highest in the plot with mix-planting ratio of l(2x) : 3(4x), but their percentage of the total number of tetraploid plus triploid seeds was highest in that of 1(2x) : 1(4x) ratio. The plot with mixplanting ratio of 1(2x) : 8(4x) gave the smallest amount and the lowest percentage of triploid seeds. When tetraploid plants are exposed to open-polliation in the field, mixplanting of dip-loid and tetraploid plants will give the best results if their ratio is 1 : 3 respectively.
日本育種学会の論文
1962-07-05