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

Evolutionary advantage of the occurrence of sperm cells, What is the evolut...

What is the evolutionary advantage of the occurrence of sperm cells and larval stage in the life cycle of sponges? The sexual reproduction in sponges, in addition to contributi

Neurophysics Assignment Help, What is Neurophysics Neurophysics is the ...

What is Neurophysics Neurophysics is the field of biophysics dealing with nervous system. Neurophysics covers a extensive spectrum of phenomena from molecular & cellular mechan

Anatomy of the brain, In order to be able to study the neural basis of perc...

In order to be able to study the neural basis of perceptual and cognitive functions, it is necessary to have some knowledge of brain anatomy (i.e., what the names of different brai

Prosthetic valve endocarditis, The risk of PVE is greatest during the initi...

The risk of PVE is greatest during the initial 6 months after valve surgery (particularly during the initial 5 to 6 weeks) and thereafter declines to a lower but persistent risk (0

Describe how to analysis and evaluation of jvp, Describe how to Analysis an...

Describe how to Analysis and Evaluation of JVP ? 1) Elevated: Any cause producing right ventricular, failure or in pericardial effusion and in constrictive pericardiitis when p

Explain the estimated average intake (ear), Explain The Estimated Average I...

Explain The Estimated Average Intake (EAR)? Considering that the nutrient requirements follow a normal distribution, the EAR is defined as 'the median usual intake that meets t

What is phototropism, What is phototropism? Phototropism is the movemen...

What is phototropism? Phototropism is the movement of plant structures in response to light. Phototropism might be positive or negative. Positive phototropism is that in which

Cages for keeping animals in the science room, Cages for keeping animals in...

Cages for keeping animals in the science room It is frequently desirable in elementary and general science to stay animals caged in the science room for short periods of observ

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