Temperature - seed dormancy, Biology

Assignment Help:

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.


Related Discussions:- Temperature - seed dormancy

What is esophagus called, What is the valve that separates the stomach from...

What is the valve that separates the stomach from the esophagus called? What is its function? The valve that separates the stomach from the esophagus is the cardia. It has the

What is cardiac transplantation , What is Cardiac Transplantation ? ...

What is Cardiac Transplantation ? Cardiac Transplantation :  The first successful clinical heart transplant was done by Christian Bmnard at Cape Town in South Africa in 196

Describe austin flint murmur in heart dieases, Describe Austin Flint Murmur...

Describe Austin Flint Murmur in heart dieases? The AR jet may impinge on the undersurface of the anterior leaflet of the mitral valve and push it up, thus creating a relative M

Define body mass index (bmi) or quetelet index, Define Body Mass Index (BMI...

Define Body Mass Index (BMI) or Quetelet Index? BMI is an index measure of body fat used for the assessment of disease risk.  It is a figure which gives an indication of weight

Explain about mandible, Q. Explain about Mandible? In the mandible, att...

Q. Explain about Mandible? In the mandible, attached keratinized tissue normally atrophies with the underlying bone. As a result there is generally a relatively narrow band of

What are the advantages of yoga, What are the advantages of Yoga Yoga h...

What are the advantages of Yoga Yoga has been derived from the Sanskrit word Yuj which means union. It is popular since ancient times. It is also one of the means to maintain f

Define types of root canal perforations according to causes, Define Types o...

Define Types of Root Canal Perforations According To Causes Iatrogenic causes. Pathological causes.

Sugarcane, what the by products of sugarcane

what the by products of sugarcane

Producers-biotic components, Producers Autotrophs (self-nourishing) are...

Producers Autotrophs (self-nourishing) are green plants as they synthesise carbohydrates from simple inorganic raw materials like carbon dioxide and water in the presence of su

Effects on health - water pollution, Effects on Health - Water Pollution ...

Effects on Health - Water Pollution Water pollution deteriorates the quality of water used for drinking, bathing, swimming, recreation and irrigation. Water contaminated with

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd