Publication: The usage of gibberellin-rich seed-waste for vegetable growth enhancement: A case study of rambutan seed
Issued Date
2014
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eng
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Mahidol University
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Faculty of Environment and Resource Studies. Mahidol University
Bibliographic Citation
Environment and Natural Resources Journal. Vol.12, No.2 (2014), 7-17
Suggested Citation
Kanokwan Karawake, Winai Nutmagul, Charlie Navanugraha, Saranva Suncharitgul, Monthira Yuttithum, Rungjarat Hutacharoen The usage of gibberellin-rich seed-waste for vegetable growth enhancement: A case study of rambutan seed. Environment and Natural Resources Journal. Vol.12, No.2 (2014), 7-17. Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/3169
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Title
The usage of gibberellin-rich seed-waste for vegetable growth enhancement: A case study of rambutan seed
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Abstract
This research aims to study the feasibility of plant growth enhancement by Extracted Gibberellic
Compounds (EGCs) of rambutan seed-waste, with 3 extracted solvents: 80% methanol, 80% ethanol and
rice whisky, and at the considered ratios (wt./vol.) of rambutan seeds (grams) and extracted solvent
(milliliters) of 1:1, 1:2 and 1:3. The growth enhancement was identified through the Lettuce Hypocotyl
Bioassays (LHB) method. Among the 5 species of lettuce (Grand rapids, Red cos, Red oak, Red coral,
and green oak) for bioassays, the Green Oak lettuce was finally determined to be the representative
lettuce for LHB. The 2.1 % of diluted EGC (methanol solvent, ratio 1:1) performed better as a growth
enhancer than the other EGAs. Moreover, the same EGC type revealed a non-significant difference of
growth enhancement with standard GA3 at 0.1 ppm. (p > 0.05). Therefore, the 2.1% EGC (methanol, 1:1)
had gibberellic acid equivalent (GAE) to 0.1 ppm standard GA3. In application to Water Morning Glory
growth enhancement, the introduction of EGC (Methanol,1:1) with the dilution ratio 1:1 with water
performed significantly different (p<0.05) in height and no-significant difference ( p>0.05) in fresh
weight with the control (water).