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

Emulsion products, E m u l s io n products Ground meat products s...

E m u l s io n products Ground meat products such as sausages, patties and luncheon meats are emulsion based products and their quality depends upon the ability of lean m

Define the petrifilm (dry film) method, Define the Petrifilm (dry film) Met...

Define the Petrifilm (dry film) Method? An alternative method to the conventional SPC is a Petrifilm (dry film) method. It is a non-petri dish plating system where a layer of n

Explain radiology, Radiology is a medical specialty that employs the use of...

Radiology is a medical specialty that employs the use of imaging to both diagnose and treat disease visualised within the human body. Radiologists use an array of imaging technolog

Pyruvate carboxylase activation, Oxaloacetate has two main roles. It is an ...

Oxaloacetate has two main roles. It is an intermediate which is consumed in gluconeogenesis and it is also a key intermediate in the citric acid cycle where it fuses with acetyl Co

What is resting membrane potential of a neuron, What is resting membrane po...

What is resting membrane potential of a neuron? What is the function of sodium potassium pumps in maintaining it?

Epithelial cells of the kidney proximal tubule, Which of the following is t...

Which of the following is true for the epithelial cells of the kidney proximal tubule? A. The sodium-glucose co-transporter in the luminal membrane is responsible for the net f

Explain human fetal circulation and the adult circulation, Concerning the m...

Concerning the mixture of arterial with venous blood what is the difference between the human fetal circulation and the adult circulation? In the human fetal circulation there

Determine procedure for determination of protein content, Determine Procedu...

Determine Procedure for determination of protein content? Now carry out the procedure as enumerated herewith: 1. Preparation of standard albumin: A standard solution of 2 mg

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