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 extracellular digestion, What is extracellular digestion? Extra...

What is extracellular digestion? Extracellular digestion is that in which food breaking into utile molecules that can be internalized by the cell is completed in the extracellu

Operatory preparation in sterilization process, Q. Operatory Preparation in...

Q. Operatory Preparation in sterilization process? 1. The circulator (non-sterile assistant) should begin to prepare the operatory while the sterile assistant scrubs. If there

Show the stages in which the cell respiration is divided, Q. What are the t...

Q. What are the three stages into which the cell respiration is divided? The three stages of aerobic cell respiration are glycolysis, Krebs cycle and respiratory chain also kno

Explain the associated procedure of reinforcement of patch, Explain the Ass...

Explain the Associated procedure of Reinforcement of Patch? Associated Procedures :  Coronary artery bypass grafting and repair of mitral valve are also carried out. P

Why did scientists want to map the human genome, Why did scientists want to...

Why did scientists want to map the human genome? They wanted to learn the location of all the significant genes in the genome in order to learn how the genome is organized, ho

What are allosteric enzymes, What are allosteric enzymes? Allosteric re...

What are allosteric enzymes? Allosteric regulators can be allosteric inhibitors or allosteric activators. The interaction among an allosteric enzyme and the allosteric inhibito

Problem of polarity in regeneration in planarians, Problem of Polarity in R...

Problem of Polarity in Regeneration in Planarians As in Hydra, flatworm regeneration as well appears to occur in a polar fashion. There seems to be ananterior-posterior gradie

Explain protease inhibitors, Protease inhibitors (PIs) Protease inhibi...

Protease inhibitors (PIs) Protease inhibitors prevent cleavage of protein precursors essential for HIV maturation, infection of new cells and viral replication. Use of a prote

Determine the term anapsid , Determine the term Anapsid ? The type of s...

Determine the term Anapsid ? The type of skull found in reptiles and seen today only in turtles. Behind the opening of the orbits the skull is solid and lacks temporal openings

Explain the sensory receptors, Sensory Receptors Sensory information re...

Sensory Receptors Sensory information received by these receptors is transmitted through sensory fibres of peripheral nerves to sensory areas at different levels of spinal cord

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