Allelopathic effects of Zingiber officinale (ginger) leaf extracts on the germination of Vigna radiata

JAMIE RAFAELLA A. GEMOTO, RORIELLE G. INEFABLE, RIQUE HERO E. NACIONALES, and RAMON ANGELO N. SINCO


Philippine Science High School Western Visayas Campus – Department of Science and Technology (DOST-PSHS WVC), Brgy. Bito-on, Jaro, Iloilo City 5000, Philippines


Abstract

Allelopathy is a biological mechanism in which allelochemicals from one organism may influence the growth and development of other plants. It has been found that Zingiber officinale allelochemicals such as flavonoids, tannins, and phenols may influence the growth of Vigna radiata. This research investigated the allelopathic effects of Zingiber officinale leaf extracts on the seed growth of Vigna radiata. The Zingiber officinale leaf extracts 0.10 g/mL,  0.15 g/mL, and 0.20 g/mL were obtained by aqueous maceration of the sun-dried Zingiber officinale leaves and were applied to the  seeds. Germination parameters were recorded every day for seven days. A significant difference was recorded between the germination percentage, germination rate, and inhibitory rate of the control and treatment groups. Results show that Zingiber officinale leaf extracts at 0.10-0.20 g/mL ratio inhibit the growth of Vigna radiata seeds.

Keywords: Zingiber officinale, leaf extracts, allelopathic effect, Vigna radiata, germination


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