ALLELOPATHIC EFFECT OF LEAF EXTRACTS OF ANAMIRTA COCCULUS, ANDROGRAPHIS PANICULATA AND HELICTERES ISORA ON GERMINATION OF VIGNA RADIATA SEEDS.

Abstract

A study was conducted to ascertain the allelopathic effect of leaf extracts of three medicinal plants - Anamirta cocculus, Andrographis paniculata and Helicteres isora on seed germination of Vigna radiata. Aqueous leaf extracts of these plants were prepared and sterilized, healthy green gram seeds were allowed to germinate in these extracts in lab conditions along with a control. Enumerations were done after 24 and 48 h. The data were recorded for statistical anal. From the study it was observed that Andrographis paniculata leaf extract showed maximum neg. allelopathic effect and Helicteres isora showed min. effect. Anamirta cocculus leaf extract was moderate in providing inhibitory effect. The study was a useful prelude for similar research in this field and also to the farmers cultivating green gram.