甘薯属显花植物,具有开花的本能特性。但因它起源于热带南美,又属短日照植物,在我国种植不是所有地区都能开花。甘薯开花虽非生产栽培上所需要的性状,但在杂交育种工作中,促使其开花确是必不可少的步骤和条件。只有在诱导不同亲本植株大量开花的条件下,才有可能按计划杂交配组,以获得大量的杂交种子。 Ipomoea indica plants, with flowering instincts. However, due to its origins in tropical South America, but also a short-day plant, not all areas of our plant can flowering. Although the flowering of sweet potato is not required for the production and cultivation of traits, but in hybrid breeding work, to promote its flowering is indeed essential steps and conditions. Only by inducing large flowering of different parental plants will it be possible to cross-hatch the program as planned to obtain large numbers of hybridized seeds.