Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Rejection Reaction
For rejection reaction the physiological and biochemical processes are set in the pistil by the recognition reaction specific to the type of pollen that lands on stigma. In contrast to systems where inhibition can occur on stigma itself thus preventing germination of pollen or its entry into style, in GSI system it may occur in style leading to either inhibition of pollen tube growth or its bursting.
The pollen wall and its protein content plays an important role in pollen stigma interaction. Through cytochemical studies it has been observed that the pollen wall is perforated by protoplasmic strands giving the appearance of a living physiological structure playing a very responsible role in the process of interchange between the pollen grain and the substrate. The incorporation of proteinaceous substances in the exine and the intine has been demonstrated by EM studies of the pollen wall during development. A good amount of mobile proteins of the pollen grains is S-gene specific. The recognition proteins of incompatibility are held extra-cellularly in the pollen wall. In GSI plants, these proteins are present in the intine while in SSI plants they occur in the exine.
Define Classification of Weight Imbalance? Obesity is defined as a condition with accumulation of excess body fat. Do you think that a measure of how much fat a person has in i
Describe Intemittent Mandatory Ventilation (IMV) Mandatory breaths are delivered at set tidal volumes and rates, and the patient can breathe on his own in between through a un
Genetics Genetics is the study of heredity. It is an ancient discipline. At least 4000 years ago, in Sumeria, Egypt and other parts of the world, farmers recognized that they
Q. How Alkaline cleaning compounds works? Carbonates, bicarbonates, hydroxides of various metals are called alkaline compounds. Alkaline cleaning compounds have a pH between
Q. What do you mean by Polyester? Polyester (ES) or polyethylene terephthalate (PET): PET is a very strong transparent glossy film, which has good moisture and gas barrier p
Q. Describe Anthracycline Cardiomyopathy? It is due to anticancer agent doxorubion (Adriamycine), when the cumulative dose exceeds 450 mg/m 2 in subjects with normal hearts. I
Insect resistant crops (IRC) Should reduce use of insecticides. This is beneficial to environment because: more beneficial insects around as they are not killed by ins
Protozoa general characters and classification
Q. Explain Genetically Modified Organisms? Techniques that use gene modification through (a) recombinant DNA technology and (b) cellular techniques of introducing DNA into an o
Q. Which are the beings that constitute the kingdom Monera? The kingdom Monera is the kingdom of the prokaryotes, archaebacteria and composed of bacteria. Q. Which are the
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd