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

How do taenias obtain food and make gas exchange, Q. How do taenias obtain ...

Q. How do taenias obtain food and make gas exchange? The Tapeworms have sucking and hooks structures on their heads (scolex) that fixate the parasite in the gut wall these stru

What is the function of the iris and of the pupil, What is the function of ...

What is the function of the iris and of the pupil? The iris works like the diaphragm of a photographic camera as it has muscles that contract or relax varying the pupil diamete

Human biology, can i get a complete note to conceptualise human biology for...

can i get a complete note to conceptualise human biology for medical entrance preparation?

Cell, how does a cell work ?

how does a cell work ?

Define precautions for estimation of vitamin c in chillies, Define Precauti...

Define Precautions for Estimation of Vitamin c in Chillies? 1. Rinse all glassware with 3% metaphosphoric acid before you begin your practical and subsequently each time you wa

Briefly explain endocrine system, Q What is the constitution of the endocri...

Q What is the constitution of the endocrine system? The endocrine system is constituted by the hormones and the endocrine glands they secrete. Q. What is the histological n

Where does hematopoiesis occur, Where does hematopoiesis occur? Hematop...

Where does hematopoiesis occur? Hematopoiesis happens in the bone marrow (mainly within flat bones), where erythrocytes, leukocytes and platelets are made, and in the lymphoid

Reproduction, some infomations about reproduction

some infomations about reproduction

Animal phylum that contains creatures with analogous organs, Q. Most insect...

Q. Most insects have wings. Which is the other animal phylum that contains creatures with analogous organs? Besides the phylum Arthropoda another animal phylum with flying crea

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