氮素、蔗糖濃度及光強度對蝴蝶蘭種子發茅及幼苗長長之影響

Effect of Nitrogen, Sucrose Concentration and Light Intensity on Seed Germination and Seedling Growth in Phalaenopsis White Hybrid

涂美智(Mei-Chit Tu) ； 李哖(Nean Lee)

《中國園藝》 34卷4期 (1988/12) Pp. 293-302

https://doi.org/10.6964/JCSHS.198812.0293

摘要

蝴蝶蘭（白花難交種）種子於低氮（7.55和15.10 mM）或低蔗糖濃度（10和15g/ℓ）下，發芽及原球體發育較佳，高氮（30.20和45.30 mM）或高蔗糖濃度（25和30g/ℓ）下，不僅發芽差，而且容易造成原球體之黃化或褐化。幼苗生長，則隨氮素濃度提高，根部生長漸減，以致莖葉／根比值提高，而蔗糖濃度提高對促進幼苗根部生長之程度比莖葉大，故莖葉／根比值降低，光線與蔗糖具有類似的效果，在某種範圍內並可相互取代。

關鍵字

氮和蔗糖濃度 ； 光強度 ； 蝴蝶蘭 ； 發芽 ； 生長

並列摘要

Lower concentrations of nitrogen or sucrose were beneficial for seed germination and protocorm development of Phalaenopsis (white hybrid). On the contrary higher concentrations decreased the rate of germination and caused etiolation or browning of protocorm. Root growth of seedlings decreased with increasing nitrogen concentration, so the shoot/root ratio increased. Increasing the concentration of suc-rose prefered to promote root growth rather than shoot growth, which decreased shoot/root ratio. The treatments of light intensity and sucrose concentration had similar effects, and could partly complement each other.

並列關鍵字

nitrogen and sucrose concentration ； light intensity ； Phalaenopsis ； germination ； growth