Two allelopathic substances from Paspalum commersonii Lam.

Farhana Zaman, Arihiro Iwasaki, Kiyotake Suenaga, Hisashi Kato-Noguchi

研究成果: Article査読

2 被引用数 (Scopus)

抄録

Paspalum commersonii (Poaceae) is a herbaceous perennial weed distributed in the tropics and subtropics regions and grows mainly in the moist, or even flooded soil. It often appears in the rice field as a competitive weed and difficult to manage. Its strong competitive nature indicates possible allelopathic potential of P. commersonii. However, no studies have been found yet on the allelopathic activity of P. commersonii. Thus, we investigated the allelopathic potential of this weed and determined its allelopathic substances. Aqueous methanol extracts of P. commersonii showed concentration-dependent inhibitory activity on the seedling growth of cress, alfalfa, rapeseed, lettuce, barnyard grass, foxtail fescue, Italian ryegrass, and timothy. Two substances were isolated through bioassay-guided fractionation and their structures were determined through spectral data as dehydrovomifoliol and loliolide. Dehydrovomifoliol and loliolide started inhibiting the shoot and root growth of cress at concentrations greater than 3 and 0.03 mM, respectively. The concentrations required for 50% inhibition (I50) of cress shoot and root growth were 3.34 and >3.50 mM for dehydrovomifoliol and 0.04 and 0.05 mM for loliolide, respectively. These results indicate that both substances may affect the inhibitory activity of P. commersonii.

本文言語English
ページ(範囲)342-348
ページ数7
ジャーナルActa Agriculturae Scandinavica Section B: Soil and Plant Science
68
4
DOI
出版ステータスPublished - 2018 5 19

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Soil Science

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