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

Etiological factor of diverticular disease, Q. Etiological factor of divert...

Q. Etiological factor of diverticular disease? The causes of diverticular disease are not certain, but several factors may contribute to changes in the wall of the colon. These

Define the operations of a public nutritionist, Define the Operations of a ...

Define the Operations of a Public Nutritionist? A public nutritionist can perform the following: In the hospital-based set up, she is a part of the team delivering thera

Describe in brief about retina, Describe in brief about retina The reti...

Describe in brief about retina The retina is a highly complex layer of nervous tissue. The photoreceptors are rods and cones for scotopic and photopic vision respectively. The

How are the lipids classified, Q. Concerning solubility, how are the lipids...

Q. Concerning solubility, how are the lipids classified? Oils and Fats are hydrophobic molecules, i.e., they are insoluble in water and non polar. Lipids in general are molecul

Define the properties of solutions, Define the properties of solutions ...

Define the properties of solutions Several properties of solutions are particularly important in food preparations. Amongst these are colligative properties, such as vapour pre

Apiculture, Apiculture : This is the study of bee-keeping for obtaining wax...

Apiculture : This is the study of bee-keeping for obtaining wax and honey.  Beekeeping is also known as apiculture, it is taken from Latin apis, bee. Apiculture is the maintenance

Can you explain protease inhibitors, Q. Can you explain Protease inhibitors...

Q. Can you explain Protease inhibitors? Ans. Protease inhibitors are the compounds which are found to some extent in cereal grains such as oats, wheat, barley and mai

Explain adaptive radiation and convergence, Adaptive radiation OR convergen...

Adaptive radiation OR convergence Adaptive radiation Explanation of the adaptive radiation process linked to the introduction of a single species and the wide range

Indications for surgery-pulmonary regurgitation, Indications for Surgery : ...

Indications for Surgery : Patients usually present with fatigue, dyspnoea and ventricular arrhythmias. If they have additional tricuspid regurgitation, pulmonary valve replacement

Disadvantage of a monoculture, (a)What do you understand by the term 'monoc...

(a)What do you understand by the term 'monoculture'? (b) What is one disadvantage of a monoculture?   a) 'Monoculture' is the term applied to the growing

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