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紫罗兰分单瓣品系和重瓣品系两种类型,后者的观赏价值高于前者。但重瓣紫罗兰因雌雄蕊退化成新的叶片和花蕾,不能结实繁殖后代,所以在栽培上存在如何培育种子的问题。紫罗兰单瓣品系的后代全部为单瓣植株。在重瓣品系的后代中,有60％左右是重瓣植株,40％左右是单瓣植株,种子即采自这种有重瓣遗传性的单瓣植株上。因此要获得开重瓣花的紫罗兰种子,必须培育好重瓣品系中开单瓣花的植株。这种含重瓣遗传性的单瓣母株的特点是:株形较弯曲,长势偏弱,叶色暗
Volatile single-lobe strains and double-loving strains of two types, the latter’s ornamental value is higher than the former. However, due to the stolons of Violaceae degenerated into new leaves and flower buds, the progeny of the Violets can not be propagated robustly, so there is a problem of how to cultivate the seeds in cultivation. Offspring of the single-leaf Volatile Lines are all single-leaf plants. About 60% of the offspring of the double petal lines are double-leaf plants and about 40% are single-leaf plants. The seeds are collected from the single-leaf plants with the double-loving heredity. Therefore, in order to obtain the seeds of Violet which are used to open the double flower, it is necessary to cultivate the plants with single flower in the double flower. This single petal with heritability of double petals is characterized by a more tortuous shape, weaker growth, a darker leaf color