EFFECTS OF CERTAIN GROWTH REGULATING SUBSTANCES ON GROWTH CORRELATION IN LETTUCE SEEDLINGS

Some effects of plant growth-regulating substances on microorganisms.

Roles of Plant Growth Regulating Substances

Separation of Plant Growth Regulating Substances on Silica Gel Columns.

The preparation of the silica gel is similar to the method of Bulen, et al (2) for organic acid chromatography. Silicic acid (Mallinckrodt's 100 mesh analytical reagent) is prepared, generally in one pound batches. by repeatedly washing it in distille(d water, and decanting the fine particles that do not settle out of suspension after an arbitrarily chosen period of 15 minutes. After the silici...

Effects of Certain Growth Substances on the Growth and Morphogenesis of Immature Embryos of Capsella in Culture.

In an earlier paper (7) the development of isolated heart-shaped and older embryos of Capsella4 (> 80 ,u long) when grown in a sterile nutrient medium containing mineral salts, vitamins and 2 % sucrose was described. It was also shown that supplementing the basal medium with a mixture of growth substances like indoleacetic acid (IAA), kinetin and adenine sulfate permitted development of still s...

Effects of some growth substances on mitosis.

Radiomimetic action of growth substances, also called hormones, has been demonstrated by several workers Some of the growth substances are used as growth promotors while others are used as herbicides for weed control. As they prove toxic beyond certain concentrations, it is fruitful to study their effects at different concentrations. This paper describes the results of an experiment involving d...