Haploid production, Biology

Assignment Help:

Haploid Production

The higher plants are normally diploid, with two sets of chromosomes in their somatic cells. Their haploids (with one set of chromosomes) arise in nature by parthenogenesis due to malfunction in the normal sexual process. However, such events are extremely rare and unpredictable. In 1964, two Indian scientists, Guha and Maheswari, observed that in cultured anthers of Datura innoxia some of the microspores, instead of following the normal gametophytic mode of development, formed sporophytes (Androgenic plants).

As expected, those sporophytes were haploid. This report caused much excitement because of the considerable importance of haploids in genetics and plant breeding. To-date androgenic haploids of over 200 species, including many major crop plants (Cereals, Brassica spp, tomato and potato), have been raised through anther and/or isolated pollen culture.


Related Discussions:- Haploid production

Gonial apospory and somatic apospory, Gonial Apospory and Somatic Apospory ...

Gonial Apospory and Somatic Apospory Gonial Apospory There is no meiosis. The megaspore mother cell enlarges; a small vacuole appears above and below the nucleus. The c

National approach to deal with the prevention of obesity, Define National A...

Define National Approach to deal with the Prevention of Obesity? A number of countries have adopted a national approach to deal with the prevention of obesity and other non-com

Do platyhelminthes have an excretory system, Q. Cnidarians and Poriferans d...

Q. Cnidarians and Poriferans do not have excretory systems. Do platyhelminthes have an excretory system? Platyhelminthes have a primitive excretory system made of flame cells

Classification of microorganisms basis of temperature, Classification of Mi...

Classification of Microorganisms On basis of temperature for growth  Microorganisms can be classified into: -  Thermophillic: Microbes those require high temperature for

Types oligosaccharide linkages, In glycoproteins, two main parts of oligosa...

In glycoproteins, two main parts of oligosaccharide linkages exist: a) An O-linked oligosaccharides attached to the protein by O-glycosidic bonds, to the OH groups of serine or

Define about the pseudosquint, Define about the Pseudosquint (Pseudo-false...

Define about the Pseudosquint (Pseudo-false) Pseudosquint is the condition when despite the visual axis being parallel, there , appears to be a squint. Pseudosquint can be conv

How are bacteria are classified, Q. How are bacteria are classified accordi...

Q. How are bacteria are classified according to their need for oxygen? According to their need of oxygen bacteria are classified into anaerobic those that survive without oxyge

Protozoans, Protozoans Prokaryotes represent only a few thousand of th...

Protozoans Prokaryotes represent only a few thousand of the estimated 2 million species of living beings known on the earth today. The rest are mostly eukaryotes that form the

Diagnosis, D i a g no s i s Diagnosis, the key for successful ma...

D i a g no s i s Diagnosis, the key for successful management of the disease problem, refers to identification of the cause of a disease. The process of diagnosis requir

What do you mean by polyester, Q. What do you mean by Polyester? Polyes...

Q. What do you mean by Polyester? Polyester (ES) or polyethylene terephthalate (PET): PET is a very strong transparent glossy film, which has good moisture and gas barrier p

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