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.
Infectious canine hepatitis The disease is caused by type-1 canine Adenovirus in the family Adenoviridae. The disease appears in pups as peracute, acute, and mild. The clinica
Question 1 List various methods used for determination of blood glucose. Explain the principle of each test. Add a note on advantages and disadvantages of each method Question
Q. What are the endocrine glands that regulate sexual activity in males? How does this regulation work and what are the involved hormones? In males the sexual activity is regul
Water Water is the most important constituent of all living tissue. It forms up to 95% of the fresh weight of some animals. We all know that water is lost through sweat, excre
NUCLEOPLAS M OR KARYOPLASM OR KARYOLYMPH OR NUCLEAR SAP Nucleoplasm and cytoplasm name proposed by E. Strassburger . Chemical composition of nucleoplasm given by Kossel . Co
Roles of Abscisic Acid Abscisic acid (ABA) is a particularly interesting hormone with regard to the regulation of its own levels. Its levels rise and fall dramatically in seve
#question.what are the reason that arthropodans are abundant in nature.
Explain Herbals of Brunfels? Between the years 1530 and 1536 Otto Brunfelsius (Brunfels) (1463-1534) published his 'Herbal' which consisted of descriptions of a large number of
find the habits and habitats of scyphas?
classification sketch of protozoa
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