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

How many atp molecules are made after glycolysis, How many ATP molecules ar...

How many ATP molecules are made after glycolysis? Glycolysis is a process same to glucose degradation in fermentation. It forms (final balance) two molecules of ATP for each br

Explain foscarnet, Foscarnet  (Foscavir)  Foscarnet is an alternative t...

Foscarnet  (Foscavir)  Foscarnet is an alternative to ganciclovir and valganciclovir for treatment of CMV infection. It is approved for use in CMV retinitis, including progress

Agro-industrial by-products-non-conventional feed resources, Non-Convention...

Non-Conventional Feed Resources There are many non-traditional or non-conventional materials which are available in abundance and can form potential source of feedstuffs for f

Pulses - hypertension, Pulses Careful examination of both upper and lo...

Pulses Careful examination of both upper and lower limb pulses is useful in detecting coarctation, and other arterial stenosis. The carotid arteries should be checked for sten

What is the etiological agent of visceral leishmaniasis, What is the etiolo...

What is the etiological agent of visceral leishmaniasis? How is the disease transmitted and what are its typical manifestations? Visceral leishmaniasis is caused by the protozo

What is gastrulation, What is gastrulation? How during gastrulation are the...

What is gastrulation? How during gastrulation are the first two germ layers formed? What are these germ layers? Gastrulation is the process by which a portion of the blastula w

Uses of plural embryos, Uses of Plural Embryos Although the basic tha...

Uses of Plural Embryos Although the basic that trigger causes polyembryony are not fully understood, there has been no dearth of interest in exploiting supernumerary embryos.

Explain basic functions of the micronucleus, Q. What are the respective fun...

Q. What are the respective functions of the micronucleus and of the macronucleus in the paramecium? The macronucleus is properly the cell nucleus it has RNA and DNA and acts as

Microfilaments - cytoskeletal structures, MICROFILAMENTS Discovered ...

MICROFILAMENTS Discovered by Pelvitz. These are smallest cell structure. These are non-living structures. These are solid structures, consists of actin protein (c

Nutrition in animals, filter feeding mode of nutrition is observed in- a) a...

filter feeding mode of nutrition is observed in- a) amoeba b) euglena c)paramoecium d) all of the above

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