Gibberellins - plant growth substances, Biology

Assignment Help:

Gibberellins - Plant Growth Substances

In late 1920's Kurosawa observed that the medium in which the fungus Gibberella had grown could cause the abnormal tallness in rice seedlings. This work was later taken up by Yabuta and Sumiki (1938) who isolated a crystalline product from Gibberella and named it Gibberellin. Later, Gibberellins were isolated from bean plants by MacMillan, and from citrus plants by Sumiki, from Bamboo shoots by Takahashi and Tamura. This established the wide occurrence of Gibberellins in plants. Today, we know that more than 70 different Gibberellins exist. All have a common skelton but variations are caused by substitutions at several positions in the molecule.

 


Related Discussions:- Gibberellins - plant growth substances

Nucleus of a spermatogonia, Plot the amount of DNA in the nucleus of a sper...

Plot the amount of DNA in the nucleus of a spermatogonia from the G1 stage prior to the first meiotic division through the completion of meiosis. Label each of the major stages of

What is cardio vasular examination in hheart disease, What is cardio vasula...

What is cardio vasular examination in hheart disease? Cardio-vascular examination: A thorough and systematically cardio-vascular examination provides valuable clues to the pr

Show some evolutionary advantages of animals, Q. What are some evolutionary...

Q. What are some evolutionary advantages of animals with complete digestive tube? The complete digestive tube permits animals to continuously feed themselves without waiting fo

What is the significance of the epiglottis in human body, What is the signi...

What is the significance of the epiglottis in human body? What happens to the glycogen concentration in the liver cells when the level of adrenaline enhances in the blood strea

Endothelium derived relaxing factors, Vasoactive substances such as Endothe...

Vasoactive substances such as Endothelium Derived Relaxing Factors (EDRF). Prostacyclin and Endothelin can be formed in the vascular endothelium. Endothelial dysfunction can lead t

Define role of public nutritionist in health care delivery, Define the Role...

Define the Role of Public Nutritionist in Health Care Delivery? It is clearly evident from the foregoing discussion that nutrition is an important, though not the only, determi

What do you mean by sampling?, Question 1 Explain the essential elements o...

Question 1 Explain the essential elements of Pharmaceutical Manufacturing Question 2 What is pharmacokinetics? Briefly describe the different pharmacokinetic processes that d

Central carbons participate in the peptide bond, Q. Do the -H groups bound ...

Q. Do the -H groups bound to the central carbons participate in the peptide bond? The central carbons themselves, the -R groups and the hydrogen attached to the central carbons

What percentage of the offspring purple flowers have, Purple (P) flowers ar...

Purple (P) flowers are dominant and white (p) flowers are recessive. A homozygous dominant purple flower is crossed with a homozygous recessive white flower. what percentage of the

Stereochemistry of amino acids - optical properties, Stereochemistry of Ami...

Stereochemistry of Amino Acids: Optical Properties All  amino acids (except glycine) rotate the plane of polarized light because of  the presence of an asymmetric center at C-2

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd