Germination inRosa

Publisher Website
Google Scholar
Abstract
It has been confirmed that immaturity in the embryo is not the cause of dormancy in Rosa; nor do the testa and pericarp in R. arvensis prevent access of water. In addition to the mechanical restriction which is imposed on the expansion of the embryo by the massive pericarp, the achene contains growth and germination inhibitors. The effect, on the germination of embryos, of these non-toxic substances extracted from achenes of R. rugosa and R. canina has been examined. Dormancy in the seeds of R. arvensis maybe largely broken by 6-benzyl-aminopurine or gibberellic acid, and one possible function of the inhibitors may be so to affect the balance between endogenous growth promoters and inhibitors that germination is prevented until the protective pericarp has been weakened by decay.

This publication has 1 reference indexed in Scilit: