Abstract: The morphological traits of seeds from 21 self-and cross-combinations in Phalaenopsis and their embryos culture were investigated.The average seed length and seed width were 0.292±0.025 mm and 0.073±0.003 mm, respectively.And the average embryo length and embryo width were 0.151±0.009 mm and 0.069±0.003 mm, respectively.The germination rate and the time required for germination were various because of different combinations.The average germination rate reached 72.4%.The mean time for PLBs and first leaf formation for all combinations were 22±3 and 78±6 days, respectively.The time for germination of cross-combinations was shorter than that of self-combinations and the germination rate was higher.There were no significant correlations among the time required for seed germination, germination rate, fruit size and seed size.But there was significantly linear negative correlation between the time required for seed germination and embryo size.It showed that the seeds with larger embryos would germinate earlier.

Key words: Phalaenopsis spp., seed size, embryo size, embryos culture

摘要： 对21个蝴蝶兰自交或杂交组合的种子形态进行观察和无菌培养,结果表明,蝴蝶兰不同组合的种子形态有一定差异,平均种子长、宽及种胚长、宽分别为0.292±0.025 mm、0.073±0.003 mm及0.151±0.009 mm、0.069±0.003 mm。种子萌发率及萌发所需时间因组合而异,平均萌发率为72.4%,原球茎及第一片叶出现所需时间分别为22±3 d、78±6 d,杂交组合启动萌发早、萌发率高。种子启动萌发所需时间、萌发率与果实、种子大小相关不显著,而种子启动萌发所需时间与种胚长、宽呈极显著负线性相关,表明种胚越大,萌发越快。

关键词: 蝴蝶兰, 种子大小, 种胚大小, 种胚培养