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!
Cytokinins - Apical Dominance
Cytokinins are also involved in the regulation of apical dominance. Wickson and Thimann studied the interaction of cytokinins and auxins in controlling the apical dominance. They isolated and cultured pea the stem sections in nutrient media containing auxins and no auxins. In the absence of auxins growth of lateral buds was not prevented. However, if cytokinins were added along with auxins, the inhibition of lateral buds was released. Wickson and Thimann also demonstrated the effect of cytokinins on entire shoots. When the intact shoot was soaked in a solution of kinetin, growth of lateral buds occurred even in the presence of shoot apical buds.
From this observation it was inferred that apical dominance exhibited by the shoot apex was overcome by the application of cytokinins. The present concept is that apical dominance is controlled by a balance between cytokinin and auxin concentrations. Some investigators suggest the possible inhibitory influence of cytokinins on auxin production. The cytokinin application to the lateral buds may inhibit the synthesis of certain forms of IAA oxidase, normally induced by IAA translocated from the terminal bud. With the repression of IAA oxidase, the spared auxin may stimulate lateral bud growth and shoot development. In addition to the possible inhibition of IAA degradation, cytokinins may initiate a sink effect at the site of lateral buds to attract diversion of nutrients from other regions.
Pyruvate kinase catalyzes the third irreversible move in glycolysis. It is activated by fructose 1, 6-bisphosphate. The ATP and amino acid alanine allosterically inhibit the enzy
Explain Early Diastolic Sound in diastolic ? a) Opening snap (0s) of Rheumatic MS: High frequency sound. Generation of sound: Because of high LA pressure, the superior systolic
Q. Importance of counselling for diabetic patient? Diabetes is a life-long illness. Life style modification and precautions taken by the patient can prevent complications and i
I WANT JOB FOR TEACHING SCINCE SUBJECT FOR ONLINE
FEMALE REPRODUCTIVE SYSTEM - In female mammals the female reproductive system characteristically comprises of the ovary, uterus, placenta, vagina and vulva.
Q. In which period of life does the formation of gametes begin in women? The meiosis that forms female gametes begins in the cells of the ovarian follicles before birth after t
1. Biogas is produced by the activity of aerobic bacteria on animal waste 2. Methanobacterium is an aerobic bacterium found in rumen of cattle 3. Biogas, commonly called goba
Problem of Potency of Blastema Cells The local cells are accountable for regeneration. Now you could ask which of the blastema cells differentiated into which type of limb ti
Q. Explain Spoilage of Soft Drinks? We all consume soft drinks, fruit juices, as well as, preserves, which normally are available in the market as tetrapacks, cans, bottles
EFFECT OF ALCOHOL - 1 . EFFECT ON NERVOUS SYSTEM - Alcohol has an anesthetic effect on nervous system. It affects orientation, alertness, coordination, judgement
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