甘薯库源关系及其遗传研究初报

该文选用几种不同类型的甘薯（Ｉｐｏｍｏｅａ ｂａｔａｔａｓ Ｌａｍ），品种相互嫁接。嫁接组合块根的鲜产，干产分别进行方差分析。结果表明，光合源和贮藏库的遗传生理特性对嫁接组合块垠的产量重要作用，库容量大小时甘薯地下部块根产量起重要的决定作用，同时，高库容丰木克服或改善低关类型品种的潜在光合源和潜在生理流，并提高后者的光效能和块根产量，甘薯地下部块根的干物率和薯肉色也是贮藏根固有的遗传生理特性，嫁接

Studies on Source-Sink Relationships and Their Genetic Characteritics in Sweet Potato(Ipomoea batatas Lan

Four sweet potato varieties of different growth patterns were grafted reciprocally in 1989. The seedlings of 16 grafting combinations were transplanted in a trial field of ralldomized complete splitplot design' The per plot root yields, fresh and dry,underwent analysis of variance. The scion and stock in a grafted seedling were regarded as the photosynthesis source and storage sink,respectively,and the influence of their genetic characteristics on the root yield was studied. The results showed that the characteristics of both source and sink could greatly influence the root yield, but the yield was primarily determined by the sink capacity rather than the source potential. The sink capacity of high yielders seemed to have enhanced the poor source potential of low yielders and significantly raised the root yield of the latter. The dry matter content in root and the root flesh color of the grafted seedling were similar to those of the stock varieties,and not influenced by the photosynthesis source.