Abstract
A study was carried out to investigate the effects of Naphthalene Acetic Acid (NAA) and sugars on the plants and flowers quality of Mokara Chark Kuan orchid respectively. Parameters were monitored between November 2014 to March 2015, with the application of three concentrations of NAA at 25, 50 and 100 mg/L in the field. The application of 25 mg/L NAA significantly increases the plant height, number of roots and total soluble solid content of Mokara Chark Kuan orchid plants. But, there was no significant effect on the leaves number, chlorophyll content and number of flowers. In case of storage experiment, the cut Mokara Chark Kuan flowers were treated with 3 % and 6 % glucose and sucrose. Physiological parameters: fresh weight, water uptake, petal thickness, discoloration and vase life were evaluated. It can be concluded that spraying with 25 mg/L NAA enhanced the plant growth and development of Mokara Chark Kuan orchid. The study also showed that 6 % sucrose was the best treatment for maintaining the post-harvest quality as well as vase life of cut Mokara Chark Kuan orchid flowers. Normal 0 21 false false false MS X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:Table Normal; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:Calibri,sans-serif; mso-bidi-font-family:Arial;}
Highlights
Orchidaceae comprises the largest family of flowering plants with 25,000 to 35,000 species belonging to 600-800 genera
Produced no significant effect on number of leaves produced by Mokara Chark Kuan and the results showed that the highest number of new leaves was observed at 25 mg/L Naphthalene Acetic Acid (NAA) treatment with a value of 3.2 ± 1.03 followed by 50 mg/L NAA treatment
The application of NAA produced the significant effect on number of roots of Mokara Chark Kuan and the results showed that the highest increased number of roots observed at 25 mg/L NAA treatment with a value of 5.00 ± 0.58 followed by 50 and 100 mg/L NAA treatment respectively
Summary
Orchidaceae comprises the largest family of flowering plants with 25,000 to 35,000 species belonging to 600-800 genera. Mokara Chark Kuan is a terrestrial hybrid orchid that has a monopodial growth type that allows it to grow upwards from a single point. It grows taller from a single stem in a single upward direction. Naphthalene Acetic Acid (NAA) is a plant hormone in the auxin family and is an ingredient in many commercial post-harvest horticultural products. It is a rooting agent and used for vegetative propagation of plants from stem and leaf cuttings (SAIFUDDIN et al, 2009). NAA is applied to the orchid by spraying regularly so that the effect of NAA is shown in the five month application
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