Takeuchi Ami, Akatsu Yuna, Asahi Takahiro, Okubo Yukino, Ohnuma Mariko, Teramura Hiroshi, Tamura Koji, Shimada Hiroaki
Department of Biological Science and Technology, Tokyo University of Science, Katsushika, Tokyo 125-8585, Japan.
Plant Biotechnol (Tokyo). 2022 Jun 25;39(2):195-197. doi: 10.5511/plantbiotechnology.21.1119a.
Potato, L. is an important crop. However, it is difficult to breed potato cultivars by applying conventional crossing methods because potato has a tetraploid genome and is vegetatively propagated. Flower formation and tuber development occur simultaneously. Many potato cultivars hardly produce any fruits after crossing and fail to produce seeds. We report an improved procedure for obtaining progeny seeds by grafting potatoes onto tomatoes. The rate of fruit formation was more than 19% when the grafted potatoes were used for the crossing experiments, whereas crossing using the ungrafted plants showed a rate of 1.1%. This result suggests that our procedure results in the easy acquisition of null-segregant progenies by crossing mutant lines. It is also expected to improve conventional potato breeding.
马铃薯（Solanum tuberosum L.）是一种重要的作物。然而，由于马铃薯具有四倍体基因组且通过无性繁殖，应用传统杂交方法培育马铃薯品种很困难。花的形成和块茎的发育同时发生。许多马铃薯品种杂交后几乎不产生任何果实，也无法产生种子。我们报告了一种通过将马铃薯嫁接到番茄上获得后代种子的改进方法。当将嫁接的马铃薯用于杂交实验时，坐果率超过19%，而使用未嫁接植株进行杂交的坐果率为1.1%。这一结果表明，我们的方法能够通过杂交突变系轻松获得零分离后代。它还有望改进传统的马铃薯育种。
