Factors Affecting the Use of Mung Bean (Vigna RadiataL. Wilczek) Cuttings as a Bioassay for Root-Promoting Substances

Abstract

SummaryCotyledons were shown to be a major source of inherent root promotion in mung bean cuttings. Cuttings from seeds of different size and seedlings of different ages therefore gave a variable rooting response in bioassays for root-promoting activity. A consistent and sensitive bioassay was achieved by removing the cotyledons from germinating seedlings four days after sowing.