光、CO2和蔗糖对蝴蝶兰组培苗生长及光合的影响

研究了组培微环境中蔗糖、CO2浓度和光照在生根阶段对蝴蝶兰组培苗生长的影响.结果表明,培养基中添加10蔗糖对蝴蝶兰组培苗的生物量形成有显著影响.在低光条件下,蔗糖的添加对植株生长的影响更加明显,表明直接吸收培养基中的蔗糖仍是组培苗获取碳源的方式之一.提高光照强度显著增加了植株鲜重.提高CO2浓度可进一步增加组培苗的生长量,生长发育具有明显优势.

Influences of Illumination, CO2 and Cane Sugar Intensive on the Growth and Photosynthesis of Tissue Culture Seedlings of Moth orchid

Influences of the concentrations of cane sugar and CO2,light intensity on the growth of tissue cultured seedlings of Moth orchid in the rooting stage were studied.The results showed that came sugar with a concentration of 10% added in the culture media could significantly influence biomass formation of the seedlings.Under low light intensity the addition of cane sugar in the media had extremaly significant impact on the growth of seedlings,indicating that direct absorption from the media was one of the ways for the seedlings to obtaine carbon sources.To increase light intensity could significantly increase the fresh weight of seedlings.To increase the concentration of CO2 could promopte the growth of the seedlings,exhibiting remarkable advantages for the growth.