生長調節劑對盆栽秋石斛蘭矮化及開花之影響

Effects of Growth Regulators on the Growth and Flower Quality of Dendrobium

林純瑛(Chwen-Ing Lin)

《花蓮區農業改良場研究彙報》 18期 (2000/06) Pp. 38-48

https://doi.org/10.6957/RBHDAIS.200006.0038

摘要

為探討生長調節劑對盆栽秋石斛蘭矮化及開花之影響，於85年5－7月以不同濃度生長調節劑噴灌處理於25－30 cm高之秋石斛蘭夏威夷一號品種（Dendrobium phalaenopsis' HawaiinBeauty NO.1'），生長調節劑為Ethrel（益收）100、300、500、700 ppm；Paclobutrazol（PP333）12.5、25、50ppm；Chlormequat（CCC）1,000、2,000、4,000 ppm；Sodium 1-Naphthalene acetic acid（SNA）10、30、50 ppm等。試驗結果得知施用Ethrel 700 ppm、CCC 4,000 ppm、SNA 30 及50 ppm可使秋石斛蘭夏威夷一號品種植株矮化、生長勢減緩、葉寬減小、花梗變短、花朵數減少等效果，但花梗數、花形及花色澤等均不受其影響。其中以SNA 30 ppm矮化效果佳，對開花品質影響小，為盆栽秋石斛蘭矮化之理想藥劑，謹提供蘭花之學術研究及生產應用參考。

關鍵字

生長調節劑 ； 秋石斛蘭盆花 ； 矮化 ； 開花

並列摘要

Experiments were conducted to study the effect of growth retardants on the growth performance of Dendrobium. The chemicals were given by foliage spraying and drenching on the new buds (about 30 cm height), or on whole plants of pot-grown D.phalaenopsis 'Hawaiin Beauty No.1'. Four kinds of growth retardants were investagated, which including: (1) Ethrel (ethephon) (100, 300, 500, 700, 1000, 1500, 2000ppm) (2) PP333 (paclobutrazol) (12.5, 25, 50ppm) (3) CCC (chlormequat) (1000, 2000, 4000ppm) (4) SNA (Sodium 1-Naphthalene acetic acid (10, 30, 50ppm). The experiments were carried out during May and July in 1995 and 1996, respectively.Results have showed that the treatments of Ethrel (700 ppm), CCC (4000 ppm) and SNA (30 and 50 ppm) reduced plant height, leaf width, flower stalk length and flower numbers. The higher concentration the more flower abortion. However, the flower size, number of flower stalk and flower shape were not influenced.The treatment of SNA 30 ppm caused less influance on flower quality and kept well appearance, that was recommonded as a good protocol for pot-Dendrobium cutivation.

並列關鍵字

Growth regulators ； Pot of Dendrobium phalaenopsis ； Dwarf ； flower