不同等级唐菖蒲球茎的种性退化特征研究

An Approach to the Degeneration Characters of the Various Grades of Gladiolus hybridus Seed bulbs

通过唐菖蒲 (GladiolushybridusH .)等级球茎的露地栽培试验比较 ,初步得出直径 2 .5 5～ 4.45cm的种球植株生长势较强 ,发病率较低 ,可以用做生产唐菖蒲切花种球 ;直径小于 1 .91cm的籽球感病率低 ,利用它们具有种球复壮的能力来繁育唐菖蒲商品种球 ;直径大于 4.45cm的种球感病严重 ,植株表现出严重种性退化特征。

The various grades of Gladiolus hybridus seed bulbs were planted in the open .The results showed that : the plants which come from the seed bulbs whose diameters were 2.55 ～4.45 cm, grew stronger, and that the disease incidence was low fairly.It is possible for them to be used as cutting flowers seed bulbs.The disease incidence of the separating bulbs from the mother bulbs whose diameters were smaller than 1.91 cm was the lowest, the juvenescence of the seed bulbs can be used to breed their seed bulbs for market.Seed bulbs whose diameter were larger than or equivalent of 4.45 cm were infected most seriously,the character of the seed bulbs degraded obviously.