On the Sterility of Buckwheat : With special reference to the accumulation of starch in stem

[摘要] As one of the causes of the sterility of buckwheat it may be taken up that the fruiting causes the plant to prevent the smooth inverting and transforming of assimilated starch. Namely, in spite of the fertilization taking place completely, on account of the starch accumulated in the vegetative parts being incapable of translocating for fruiting, the ovares can not develop. When the pollinated ovaries are plucked in the early fruiting stage the rest of the other young pollinated ovaries begin to develop. When the ovaries are not plucked, they make it a rule to fructify according to a certain definite order, and, when they reach a certain number, the other ovaries do not grow to fructify, even if they are pollinated. If we periodically pluck the ovaries which have begun to fructify, the percentage of fruiting or that of an immature ear of wheat is not much different from that of the ovaries, which are not plucked at all. But the number of the ovaries, which have begum to develop for friting, decreases in proportion to the number of the plucked ovaries. Through the observation on the starch in the stem which was done to prove the fact stated above, it has made clear that the grains of starch grow in proportion to the growth of the vegetative parts, and have a tendency to be layers. The sum-total of stocked starch increases as the plant grows and the sum of starch in the stem never diminishes in any growth-stages. These phenomena prove that the invertion and the transformation of carbohydrates take place very slowly in buckwheat, so it is most indesirable for the crops in which only their fruited grains are aimed at harvesting for actual use

[学科分类] 农业科学（综合）