Researches on Plant Growth Substances. II. On 1-Naphthylacetaldehyde 2.

Effects of Abscisin II and Other Plant Growth Substances on Germination of Seeds with Stratification Requirements.

Many seeds wvill not germinate uinless they are first stratified, that is, held in cold, moist storage for several months. WVhile these effects are not well understood at a physiological or biochemical level, XVilliers and Wareinig (8) showed that in ash, Fraxinnis excelsior L. both dormant and nondormant seeds have growth-inhibitory activity. However, in the nondormant seeds a growth accelerat...

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...

Some effects of plant growth-regulating substances on microorganisms.

Evaluation of the effect of plant growth substances on longevity of gerbera cut flowers cv. Sorbet.

Gerbera is one of the most popular cut flowers in the world. Several experiments have been done on the effect of different chemical compounds on longevity and quality of cut flowers. In the present study, two experiments based on a completely random design with two treatments and three replications were conducted on gerbera cut flower cv. Sorbet. The first experiment examined the effect of BA, ...

Roles of Plant Growth Regulating Substances