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

.development, what is the function of the larval stage in the development o...

what is the function of the larval stage in the development of the young of five named animals

Cell biology, Introduction to Cell Biology Introduction to Cell Biology i...

Introduction to Cell Biology Introduction to Cell Biology illustrate about the evolution of the cell that involves two processes: 1) Occurrence of genetic variations which are p

What ions must a plant obtain from the soil, What ions must a plant obtain ...

What ions must a plant obtain from the soil in order to make (a) ATP, (b) chlorophyll?   (a) To create ATP (adenosine triphosphate) a plant requires a supply of phosphate io

Explain bacterial vaginosis, Bacterial vaginosis  The role of sexual tr...

Bacterial vaginosis  The role of sexual transmission is unclear in bacterial vaginosis, in which normal H2O2-producing Lactobacillus  species are replaced by overgrowth with  G

Vaccines for gas infections, In developing countries because of poor compli...

In developing countries because of poor compliance, poverty, ignorance, primary and secondary prevention strategies are difficult to implement properly. Also in western countries (

Function of the cornified layer of the skin, What are the main functions of...

What are the main functions of (a) the basal (Malpighian) layer, (b) the cornified layer of the skin?   (a) The basal (Malpighian) layer makes new skin cells and the pigment

Why is it not correct to assert that dna self-replicates, Why is it not cor...

Why is it not correct to assert that DNA self-replicates? DNA is not completely autonomous in its duplication process because the replication does not happen without enzymatic

Explain the summary of morbidity in cad, Explain the summary of morbidity ...

Explain the summary of morbidity  in CAD? i) The prevalence of CAD among immigrant Indians is about three-fold higher than in comparable indigenous populations; ii) CAD tends t

What is the virus that causes flu, Q. What is the virus that causes flu? Wh...

Q. What is the virus that causes flu? Why doesn't the body produce permanent immunity against that virus? How does the vaccine against flu work? Flu is a disease caused through

Are there aquatic and flying mammals, Q. Are there aquatic and flying mamma...

Q. Are there aquatic and flying mammals? Sirenians (dugongs, manatees) and Cetaceans (whales, dolphins) are aquatic mammals Chiropterans (bats) are flying mammals.

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