关键词: 蝴蝶兰, 种子大小, 种胚大小, 种胚培养

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