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.
What do biomass pyramids represent? Biomass pyramids show the sum of the masses of the individuals that participate in each trophic level of a food chain.
Changes In Gluten Proteins During Dough Formation Initially, gluten is formed when flour and water are mixed together. The proteins in the flour, glutenin and gliadin cross l
Pre-Embryo - Human Development About thirty hours after fertilization the zygote goes through mitosis giving rise to 2 blastomeres. These blastomeres go through further cleava
Q. Nutritional management of diabetes mellitus? we will learn about the nutritional management of diabetes mellitus which is an important metabolic disorder of public health si
Comparing to cyclostomes (primitive vertebrates) what are the main novelties presented by fishes? Compared to cyclostomes, evolutionary novelties shown by fishes are: pectoral
Explain the groups of diabetes food pyramid The six groups of diabetes food pyramid are shown in Figure below. 1) Fat, oils and sweets (smallest group) 2) Milk 3) Mea
In this 1st step, the corresponding aminoacyl-tRNA for the second codon binds to the A site by codon-anticodon interaction. Binding of the aminoacyl-tRNA needs elon
Since Some animals, particularly ruminants and termites, can digest cellulose with the help ofsymbiotic micro-organisms that live in their guts. Humans can digest cellulose to some
Q. Show Risk factors of cardiovascular disease? Various risk factors of cardiovascular disease. We will now briefly mention the causes related to hypertension. 1. Genetic
What are some functions of the epithelium? The epithelial tissues can do covering, impermeability and protection against the environment, for instance, in the skin, resorption
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