Uses of plural embryos, Biology

Assignment Help:

Uses of Plural Embryos

Although the basic that trigger causes polyembryony are not fully understood, there has been no dearth of interest in exploiting supernumerary embryos. The multiple embryos within a seed can be haploid, diploid or triploid. Haploid seedlings can be utilized for obtaining homozygous diploid forms by doubling the chromosome complement by a polyploidization agent. Such haploids and double haploids or homozygous diploids ate of immense use in breeding superior crop varieties and hybrids. Adventive embryos are useful in agriculture and horticulture because they are genetically uniform and generally disease free. In view of the utility of polyembryony, there have been several attempts to induce it artificially in those plants which are not normally polyembryonate or where the phenomenon occurs only occasionally.

Environmental factors are often responsible for induction of polyembryony. However, application of PGRs has not proved successful in inducing polyembryony. During the last three decades tissue in culture technology, involving excision of a desired tissue or organ and growing it on a nutrient medium under sterilized conditions, has been highly successful. It has helped in large scale propagation of plantlets obtained from vegetative or reproductive parts of several plants of agricultural and horticultural- importance. Plantlets can now be obtained from the diploid tissues of nucellus or embryo or even from haploid micropores and triploid endosperm. Because of the wider application of tissue culture methodology, early interest in induction of polyembryony in field grown plants has died down.


Related Discussions:- Uses of plural embryos

Flightless birds, #Most of the world''s flightless birds are either nocturn...

#Most of the world''s flightless birds are either nocturnal and secretive (e.g. the kagu) or large, swift and well-armed (the ostrich). The exceptions are found primarily on island

Carpentier-technique of operation, Carpentier: Edwards or similar annul...

Carpentier: Edwards or similar annuloplasty ring is then sutured into place by interrupted sutures to support the repair and reduce the annulus to a measured amount. The ring m

Define minerals, Define minerals Definition of minerals, as it applies ...

Define minerals Definition of minerals, as it applies to food and nutrition usually refers to  the elements other than carbon, hydrogen, oxygen and nitrogen that are present in

What do you mean by punch cards, Q. What do you mean by Punch cards? Pu...

Q. What do you mean by Punch cards? Punch cards are used when the number of taxa to be keyed out is large. In this type of cards the holes at numbers corresponding to a charact

Oogenesis, explain full about this process

explain full about this process

How stomata position changes in some plant, How has the position of the sto...

How has the position of the stomata changed in some plants to prevent excessive water loss by transpiration? In the some plants that have leaves that receive too much sunlight

Explain nicotinic acid, Nicotinic acid (Niacin) Niacin refers to both n...

Nicotinic acid (Niacin) Niacin refers to both nicotinic acid and its amide derivative. Nicotinic acid occurs as white or almost white crystals or as a crystalline powder of the

Zoology, How does classifying animals based on similarities and traits help...

How does classifying animals based on similarities and traits help future scientists

Define the role of riboflavin in respiratory chain, Define the Role of Ribo...

Define the Role of Riboflavin in Respiratory Chain? Riboflavin catalyzes numerous oxidation-reduction reactions. Conversion of riboflavin to flavin mononucleotide (FMN) and the

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