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

Crustacea - feeding and digestion in arthropods, Crustacea - Feeding and Di...

Crustacea - Feeding and Digestion in Arthropods Branchiopods (Anacostraca) give a good instance for filter feeding mechanism. The appendages are of foliaceous type (leaf-like)

Growing leaves in the classroom, Growing leaves in the classroom A swee...

Growing leaves in the classroom A sweet potato will make dense foliage in the classroom if it is placed in water. Set the potato, root end down, in a glass or jar and keep the

What are some things that have algae in them, What are some things that hav...

What are some things that have algae in them? Yeast is considered Algae.

How is the blood typing concerning the abo system, How is the blood typing ...

How is the blood typing concerning the ABO system and the Rh usually done? In a blood typing for the ABO system and the Rh system a blood sample is collected from the person an

Blood pressure with the phenomena of systole and diastole, Q. What is the r...

Q. What is the relation between the maximum and the minimum blood pressure with the phenomena of systole and diastole? A minimum blood pressure is the pressure on the wall of t

What are bacteria, What are bacteria? Bacteria are unicellular and prok...

What are bacteria? Bacteria are unicellular and prokaryotic beings. Bacteria have simple organization; they present an , plasma membrane, external cell wall, circular DNA withi

Hematology case study , would i be able to get help on these case study que...

would i be able to get help on these case study questions

Explain cell membrane and plasma membrane, Explain cell membrane? The...

Explain cell membrane? The Cell Membrane :  The cell membrane, or plasma membrane, separates the cell from neighboring cells or from the external environment. Both prokaryot

Anatomy and Physiology, I have a test online it is timed 30 minutes on Anat...

I have a test online it is timed 30 minutes on Anatomy and Physiology I need an expert who is an expert in this subject to take it for me

Use of syphilis in pregnancy, Syphilis in Pregnancy Syphilis in pregna...

Syphilis in Pregnancy Syphilis in pregnant women should be treated with penicillin in doses appropriate to the stage of the disease. When pregnant women with syphilis are alle

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