Letter Published: 31 October 1964 Agar-diffusion Technique for estimating Gibberellin Production by Plant Organs R. L. JONES & I. D. J. PHILLIPS Nature 204, 497–499 (1964) Cite this article ...

A WEDGE-SHAPED agar gel is formed by pouring out 10 ml. of a hot 2 per cent agar solution (‘Bacto-Agar’, Difco Laboratories) on a pre-warmed glass plate (16 cm. × 4 cm.), which is slightly ...