Different Explants of Lilium lancifolium Have Different Potential to Differentiate and Regenerate in Tissue Culture

[Objective] The aim was to investigate differences in differentiation and regeneration of the explants from different parts of Lilium lancifolium（Yixing Lily） in tissue culture.[Method] The different parts of scale,leaf and root of Yixing Lily were cultured as explants on MS basic medium supplemented with different concentrations of plant growth regulators,so as to compare their capacity to differentiate and regenerate.[Result] The explants had different potential to differentiate（scale root leaf）.The capacity of different scale parts to differentiate was the lower part middle partupper part;the capacity of different leaf parts to differentiate was the leaf base middle part leaf tip;the capacity of different root parts to differentiate was the root base root tip middle part.[Conclusion] Tissue culture could be well applied in propagation of Yixing Lily.

水稻人工种子的研制

以水稻花药培养所产生的微不定芽为材料,成功地制成了水稻人工种子。在某些条件下,95%的人工种子能萌发和成长为秧苗。以天然种子作对照,人工种子的发芽势和发芽率分别达到43%和62%,植株移植到土壤中后能成活并生长达几个月。