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

Probation/parole client , Write a report on a special probation/parole clie...

Write a report on a special probation/parole client and programs that have been situated to address this problem client. Focus on 1type of special requires offender (substance abus

What are the factors that for influencing photosynthesis, Q. What are the f...

Q. What are the factors that for influencing photosynthesis also interfere with the gross primary productivity? Mostly light and water, but as well mineral salts, carbon dioxid

Why neuron a is a healthy neuron, Why Neuron A is a healthy neuron Neu...

Why Neuron A is a healthy neuron Neuron A is a healthy neuron with all the usual ion channels.  When at rest with a membrane voltage of R millivolts, neuron A produces no acti

What are the materials required for radiographic, What are the Materials re...

What are the Materials required for Radiographic 1. Alginate impression material. 2. Silicone separating spray/ petroleum jelly 3. Autopolymerizing PMMA (Clear)

Enumerate the principles of suturing, Enumerate the principles of suturing ...

Enumerate the principles of suturing Principles of Suturing are as follows: - Sutures should always be inserted through the more mobile tissue flap first. - A circular fo

What do you mean by respiratory pigments, Q. What are respiratory pigments?...

Q. What are respiratory pigments? What are some respiratory pigments and in which animal groups can each of them be found? Respiratory pigments are molecules present in the blo

DNA, What is replication fork??

What is replication fork??

Types of development of animals, Types of Development of Animals Diffe...

Types of Development of Animals Different animals have evolved various methods of development. These methods can be broadly categorized into two categories (i) Direct devel

What is fluorescent microscope, What is Fluorescent Microscope? In abo...

What is Fluorescent Microscope? In above said microscopes, image is produced from light that passes through a specimen. In fluorescent microscope, however, specimen image is f

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