Quantification and herbicidal activity of mimosine from Leucaena leucocephala (Lam.) de Wit
Laboratory experiments have been performed to quantify the amount of mimosine (an allelochemical) from Leucaena leucocephala and evaluate the herbicidal activity of mimosine on selected invasive weeds in Malaysia. The mimosine amount in an aqueous extract of shoot, mature leaf, and seed parts of...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
2017
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| Subjects: | |
| Online Access: | http://eprints.unisza.edu.my/5358/1/FH02-FBIM-17-10556.pdf http://eprints.unisza.edu.my/5358/ |
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| Summary: | Laboratory experiments have been performed to quantify the amount of mimosine (an
allelochemical) from Leucaena leucocephala and evaluate the herbicidal activity of mimosine on selected
invasive weeds in Malaysia. The mimosine amount in an aqueous extract of shoot, mature leaf, and seed
parts of L. leucocephala were quantified by utilizing high-performance liquid chromatography. The herbicidal
activity of mimosine was tested on the growth (i.e., radicle length, shoot length, and fresh weight) of three
selected invasive weed species (i.e., Ageratum conyzoides, Emilia sonchifolia, and Tridax procumbens) in five
different concentrations (i.e., 0, 10, 25, 50, and 100 ppm) by utilizing the bioassay petri dish method. The
mimosine amount was highest in the shoot aqueous extract (1.41 × 104 ppm), followed by the seed aqueous
extract (8,463 ppm), and finally, the mature leaf aqueous extract (1,881 ppm). Mimosine inhibited the growth
of weed species as the concentration increased. More than 50% inhibition of all the bioassay weed species
was observed when they were applied at the mimosine concentrations of 50 and 100 ppm. These results
provide benchmark information for controlling weeds in the agriculture field in a sustainable manner and for
the future development of bioherbicides. |
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