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!
Gametophytic Incompatibility
In GSI systems callose deposition is not evident on the stigma but is very conspicuous in the pollen tube. Sometimes the callose deposition occurs even in the germpore, inhibiting pollen germination. In the Poaceae, the rejection reaction is completed within a few minutes after pollination and subsequent rejection or acceptance takes 10 minutes with the exception of Poaceae and Oenothera, the recognition/rejection reaction in GSI system occurs after the pollen tube has grown about two third the length of the style.
Genetically the recognition factor on the male side has been attributed to the male gametophyte; the proteins incorporated during pollen wall development in the intine are involved. Since in GSI systems the rejection reaction is comparatively delayed, is also possible that the synthesis or activation, and release of the recognition substances are also delayed and they occur in the pollen tube. In some species the tubes show reduced level of carbohydrates and starch.
what is the excretory organ of lizard
Shows evidence of the ability to see the interaction between environment / ecology and genetics / evolution Some candidates may recognise that evolution can result in less no
information on some heterotrophic plants
Define the Post-Herbal Period? It is difficult to draw a sharp line of demarcation between the transition period, marked by various attempts of classification, all of which we
Name the three irreversible reactions in the glycolytic pathway. The three irreversible reactions in the glycolytic pathway are : Glucose → Glucose-6-phosphate Fructose
Vertebrate Limb Earlier we know that how a series of sequential and coordinated interactions between different cell groups and tissues carry about the construction of a compl
Process of nuclear reorganization in protozoa in which nucleus divides, each half undergoes a maturation, and two persisting functional nuclei reunite is termed as: a) Autogamy
Q. What is Short Bowel Syndrome? Short bowel syndrome is a group of problems affecting people who have /had half or more of their small intestine removed. The massive resection
Q. What do you mean by Chromosome Number? We are generally aware that the number of chromosomes in each cell of all individuals of a single species is constant. ,It is also est
What are passive and active immunization? According to the duration of the protection how do these types of immunization differ? Active immunization is that in which an antigen
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