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本世纪五十年代日本 Nakayama(1954)研究指出,水稻某些矮秆品系(如d1—品系)的胚芽鞘比正常品系的胚芽鞘要短一些。七十年代重新研究这一问题时,结果有分歧。一种意见认为,矮秆基因对胚部性状没有影响,矮秆基因发挥作用的时间是在种子萌发期(Futsuhara, 1979);另一种意见认为,
The study by Japan’s Nakayama (1954) in the 1950s pointed out that the coleoptile of some dwarf strains (such as d1-line) in rice is shorter than the coleoptile of normal lines. When the issue was re-examined in the 1970s, the results diverged. One suggestion is that dwarfing genes have no effect on embryogenic traits and dwarfing genes play a role in the seed germination period (Futsuhara, 1979); in another opinion,