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 results of coarctation of aorta, Explain the Results of Coarcta...

Explain the Results of Coarctation of Aorta? Early hospital death in isolated coarctation is around 2 to 10 per cent. In many reports, mortality for older babies approaches 0.

Cytokinesis second, A cleavage furrow appears in the middle of the cell, de...

A cleavage furrow appears in the middle of the cell, deepens gradually and divides the cell into two. Thus, at the end of second meiotic division, four daughter cells are formed

Glucose-6-phosphate, Three molecules of ducose-6-phosphate  yield 3 molecul...

Three molecules of ducose-6-phosphate  yield 3 molecules of CO,  and 3 molecules of five carbon residues (pentose sugar). The latter are converted ultimately to  2 molecules  of  g

#title.Homework., Why do you think it is necessary for physicians to have s...

Why do you think it is necessary for physicians to have so many different terms that describe fractures (compound, comminuted, transverse, greenstick, etc.)?

What is histone methyl transferases, Histone methyl transferases (HMTs) hav...

Histone methyl transferases (HMTs) having a protein domain called SET. This domain is responsible to adding methyl groups to histones. Which of the following is a false statement r

Define factorial method to calculate nitrogen requirements, Define Factoria...

Define Factorial method to Calculate Nitrogen Requirements? The nitrogen requirements have been calculated by a factorial method suggested by different expert groups, described

Simple cuboidal epithelium and columnar epithelium, Q. How different is the...

Q. How different is the simple cuboidal epithelium from the columnar epithelium? Where can these epithelia are found in the human body? The simple cuboidal epithelium is made o

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