Temperature - seed dormancy, Biology

Temperature - Seed Dormancy

Low temperature treatment is an essential prelude to germination in many seeds, and high temperature may be inhibitory at the time of germination. The low temperature chilling requirement is frequently met artificially by the process of stratification. The seeds are layered in trays in cold moist air for a period of several weeks or months. Temperatures between 0 and 10?C are most effective. The chilling requirement is variously located in the embryo or the seed coat, sometimes in both. The chilling requirement of apple seeds, for example, is much longer for intact seeds than for seeds with the coats removed, or for isolated embryos. Red light and GA have a synergistic effect, that is, the combination of both factors stimulates germination more than the sum of the two separately.

Posted Date: 1/24/2013 2:22:08 AM | Location : United States







Related Discussions:- Temperature - seed dormancy, Assignment Help, Ask Question on Temperature - seed dormancy, Get Answer, Expert's Help, Temperature - seed dormancy Discussions

Write discussion on Temperature - seed dormancy
Your posts are moderated
Related Questions
Autonomic Nervous System (ANS) Autonomic Nervous System functions without conscious control of central nervous system. This system controls the functions of cardio-vascular, ga

What group did reproduction via sexual exchange of genetic information originate in?

CRITICISM OF DARWINISM - Arriva l of the fittest: Darwinism explains the survival of the fittest but was unable to account for the arrival of the fittest. V estigia

The pancreas performs digestive and hormonal functions. The enzymes secreted by the exocrine tissue in the pancreas help in the break down of carbohydrates, fats, proteins, and

Explain the role of solutions? Solutions:  A solution consists of a liquid solvent plus substances dissolved in it, called solutes. Solutes may be ions, atoms, or small molec

Medicinal Value - Conservation of Wildlife About 40% of all drugs used throughout the world have active ingredients extracted from plants and animals. The world-wide annual sa

List the short-term and long-term effects of forest destruction  (a) on hillsides, (b) in the tropics.  (a) Deforestation on hillsides exposes the soil to erosion by rain and l

Explain in brief about the ciliary muscle During accommodation the ciliary muscle contracts and in turn the size of the ciliary ring is reduced. This results in the suspensory

Absorption of lipids Absorption of lipids is quite different from the absorption of monosaccharides and amino acids. Figure shows the process. The free fatty acids, monoglycer

Classical swine fever (hog cholera) Swine fever, known as hog cholera or European Swine Fever is a highly infectious virus disease characterized by rapid spread and high morbi