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 happens to the TSH (thyroid-stimulating hormone) blood level in hypothyroidism? Why is there enlargement of the thyroid in the endemic goiter disease? When there is low T3
Q How do amoebae, paramecia and trichomonas respectively move? Amoebae move by amoeboid movements small invaginations and projections of their plasma membrane (pseudopods) that
Objective of the Radiographic Technique The ball bearings are opaque and their diameter have to be measured with the help of vernier caliper prior to use. (2 to 5 mm diameter b
Question 1: Explain how drug approval is obtained through various Regulatory Bodies in India using a flow diagram? List out the different regulatory bodies in India L
How CAMPYLOBACTERIOSIS occurs in humans C. jejuni frequently contaminates raw chicken. Survey shows that 20-100% of retail chickens are contaminated. Many healthy chickens car
Acquired Aortic Stenosis : a) Rheumatic: In developing countries rheumatic aortic valve disease is more common than degenerative one. Mitral valve involvement is a common as
Despite improvements in health care, the incidence of infective endocarditis has not decreased over the past decades. Infective endocarditis is lethal if not aggressively treated w
DIVERSITY OF AMPHIBIANS ASSIGNMET IN BIOLOGY PLWASE HELP ME TO DO THIS ASSIGNMENT AND I CAN GET GOOD MARKS IN THIS ASSIGNMENT SO GIVE ME TNE ASSIFNMENT OF THIS TOPIC DIVERSITY OF A
THE CALORIE VALUE - The amount of heat liberated from complete combusion of 1gm food in a bomb caloriemeter (a closed metal chamber filled with O ) is its gross calorific
Explain antimicrobial susceptibility All isolates of M. tuberculosis should be tested for antimicrobial susceptibility. Initial therapy for most patients with active TB should
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