Androgenic haploids, Biology

Assignment Help:

Androgenic haploids

Androgenic haploids of some species, such as wheat, mustard and tobacco, can also be raised through isolated microspore pollen culture (Pollen cultures). It must be realized that in spite of serious efforts androgenic haploids have not been possible in many other economically important plants. In-vitro gynogenesis is another approach to produce haploids (Yang and Zhou, 1990). In this technique unfertilized ovules are cultured on media which stimulate the egg (parthenogenesis) or any other haploid cell of the embryo sac (apogamy) to undergo embryogenic development without fertilization. In-vitro gynogenesis, first observed in Hordeum vulgare by San Noeum (1967), has now been reported in at least 16 species. This technique of haploid production is especially useful in plants in which the androgenic response is unsatisfactory, a large proportion of pollen plants are non-haploids or albinos, as in many cereals.

 


Related Discussions:- Androgenic haploids

Explain the transcription factor of zinc, Explain the Transcription Factor ...

Explain the Transcription Factor of Zinc? Zinc is an important structural component of DNA- binding proteins also known as 'transcription factors'. These transcription factors

In which area lengthening of long bones occurs, Lengthening of long bones i...

Lengthening of long bones in humans takes place in a specific area of the bone. This area is known as the: a) Cancellous bone b) Medullary canal c) Periosteum (pron: per-

Which is the first heart chamber into which blood en, Which is the first (h...

Which is the first (human) heart chamber into which blood enters? Where does the blood go after passing that chamber? What is the name of the valve that separates the compartments?

Do the membranes form only the outer wrapping of cells, Q. Do the membranes...

Q. Do the membranes form only the outer wrapping of cells? Lipid membranes do not form only the outer cover of cells. Cell organelles, such as the Golgi complex, lysosomes, chl

Excretory system, what is the excretory system of a crab?

what is the excretory system of a crab?

Muscles, what process provides the energy for muscle contraction?

what process provides the energy for muscle contraction?

Anthrax, A n t h r a x It is also known as spleenic fever. The pe...

A n t h r a x It is also known as spleenic fever. The peracute form of the disease in animals is manifested by sudden death with oozing of dark-coloured blood from body o

Explain doctrine of signatures, Explain Doctrine of Signatures? Handed ...

Explain Doctrine of Signatures? Handed down from the ancients, and elaborated on by the herbalists, was the 'Doctrine of Signatures', which was based on features that resembled

Write short note on cholesterol, Cholesterol, from stereos (solid) and the...

Cholesterol, from stereos (solid) and the Greek chole- (bile) followed by the chemical suffix -ol for an alcohol is an organic chemical substance classified as a waxy steroid of fa

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