A METHOD OF INCREASING THE RATE OF SEED GERMINATION OF TARAXACUM KOK-SAGHYZ

Open Access
Publisher Website
Google Scholar
Abstract
Germination of kok-saghyz seed was hastened by permitting the seeds to absorb water in quantity insufficient to induce germination, then drying the seed before sowing. The stimulation was obtained whether the uptake of water was controlled osmotically or by exposure to atmospheres of definite rel. humidity. The following results were obtained with the osmotic method. No loss of the stimulation occurred even 4 weeks after drying. The opt. conc. was [image]/2 for KNO3, [image] for dextrose. When the seeds were sown without being dried, even weaker concs. were optimum. Two weeks'' treatment proved better than shorter periods at 5 and 10[degree] C; 4 days were better than 1 or 2 weeks at 23[degree] C; at 17[degree] all 3 lengths of time gave the same results. Two weeks at 10[degree] C gave the best results of all the above. The van''t Hoff coeff. was < 2. When germinated at 23[degree] C, the treatment had no effect on the final % of germination; at low temps. it increased the final % of germination. Factors having little or no effect on the stimulation are: the nature of the solute (if thoroughly washed off), the amt. of washing (in the case of KNO3), the pH of the soln., the presence or absence of light. The stimulation was obtained whether the seeds were germinated in Petri plates qr in crooks of soil.

This publication has 0 references indexed in Scilit: