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

Define lipids - tests for presence of exoenzymatic activity, Define Lipids ...

Define Lipids - Tests for Presence of Exoenzymatic Activity? Lipids are also high molecular weight compounds. Enzyme lipases (esterases) cleaves the ester bond to form glycerol

How is the cooling of tissues and organs, Q. How is the cooling of tissues ...

Q. How is the cooling of tissues and organs for medical transplants associated with the effect of temperature upon enzymatic reactions? The molecular degradation during the dec

Enzyme, What is the name of enzyme in gastric juice?

What is the name of enzyme in gastric juice?

Explain lamda and kappa-carrageenan, Explain Lamda and Kappa-carrageenan ...

Explain Lamda and Kappa-carrageenan Lamda-carrageenan at a concentration of 0.05% produces thickening and  stabilization. Sodium salts of Lamda and Kappa-carrageenan at a co

Explain the menopausal symptoms, Explain the Menopausal symptoms Menopa...

Explain the Menopausal symptoms Menopausal symptoms include: (i) hormone-related gynaecological problems that occur around the menopause, and (ii) post-menopausal uterine

Evolution, write similaritie between the two species?

write similaritie between the two species?

Principles of polymerase chain reaction , The PCR   (polymerase   chai...

The PCR   (polymerase   chain   reaction)   is   an   extremely   simple   as   immensely powerful methods.  It permits enormous  amplification  of any particular  sequence of DNA

Define about the paracellular route - calcium, Define about the Paracellula...

Define about the Paracellular Route - Calcium? It involves passive Ca transport through the tight junctions between mucosal cells. The salient features include: It is in

Explain neurosyphilis, Neurosyphilis  Symptomatic neurosyphilis, includ...

Neurosyphilis  Symptomatic neurosyphilis, including ophthalmic or otic infection, requires treatment with high doses of aqueous penicillin G IV or procaine penicillin G IM with

What is the objectives of genesis of coronary artery disease, What is the o...

What is the objective of genesis of coronary artery diseases and risk factors ? After reading this unit, you should be able to: Understand the genesis of CAD; 1 learns about th

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