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

Which is the brain region responsible for the coordination, Which is the br...

Which is the brain region responsible for the coordination and equilibrium of the body? In the central nervous system the cerebellum is the main controller of the motor coordin

Responses of plants to stress, Responses of Plants to Stress You know ...

Responses of Plants to Stress You know that certain plant species can grow in severe environmental extremes. For example, plants grow below 0°C in the Himalayas and above 45°C

Planning of the nursing care, Planning of the Nursing Care 1) Educa...

Planning of the Nursing Care 1) Educate and teach the parents 2) Provide preoperative and postoperative care. Educate an Teach the Parents The parents may be

What is peristaltic movement role in human digestion, Q. What are peristalt...

Q. What are peristaltic movements? What is their role in human digestion? Peristalsis is the process of synchronized contractions of the muscular wall of the digestive tube, Pe

Explain the indole production test, Explain the Indole Production Test? ...

Explain the Indole Production Test? Many microorganisms produce an enzyme tryptophanase which oxidizes amino acid tryptophan to produce pyruvic acid, indole and ammonia. We can

Types of quantitative analyses in nutritional biochemistry, Define Types of...

Define Types of Quantitative Analyses in Nutritional Biochemistry? Methods of quantitative analysis broadly there are two types of quantitative analyses: (a) Gravimetric,

Define the obesity in children, Define the Obesity in Children? It is d...

Define the Obesity in Children? It is difficult to measure overweight or obesity in children and adolescents because they grow and mature at different rates. Weight status in c

What is autoclave sterilization, Q. What is Autoclave sterilization? Wo...

Q. What is Autoclave sterilization? Word "autoclave" means self locking and is used to denote an apparatus that sterilizes by use of steam under pressure. It operates on same

What is the approximate number of amino acids, What would be the approximat...

What would be the approximate number of amino acids of a protein with a mass of 203 kd? Assume an average molecular weight for amino acids of 110 grams/mol.

Zoonotic diseases-japanese encephalitis, Japanese encephalitis Japanes...

Japanese encephalitis Japanese encephalitis (JE) is a mosquito-borne encephalitis and is caused by  flavivirus belonged to the family Flaviviridae. It is a zoonotic disease, i

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