2 edition of haploids found in the catalog.
haploids
Jerry Sohl
Published
1952
by Rinehart in New York
.
Written in
Edition Notes
Currey, L.W. Science fiction, p. [461]
| Statement | by Jerry Sohl. |
| Classifications | |
|---|---|
| LC Classifications | PZ4 .S683 Hap, PS3569.O4 .S683 Hap |
| The Physical Object | |
| Pagination | 248 p. ; |
| Number of Pages | 248 |
| ID Numbers | |
| Open Library | OL6109685M |
| LC Control Number | 52005571 |
| OCLC/WorldCa | 1234580 |
Haploid is the term used when a cell has half the usual number of chromosomes.A normal eukaryote organism is composed of diploid cells, one set of chromosomes from each parent. However, after meiosis, the number of chromosomes in gametes is halved. That is the haploid condition. In humans, the diploid number of chromosomes is 46 (2x23).The number in haploid cells (sperm and eggs) is History. The first report of the haploid plant was published by Blakeslee et al. () in Datura uently, haploids were reported in many other species. Guha and Maheshwari () developed an anther culture technique for the production of haploids in the laboratory. Haploid production by wide crossing was reported in barley (Kasha and Kao, ) and tobacco (Burk et al., .
Products of somatic hybrids and cybrids Genetic engineering in plants Enzymes used in Genetic Engineering Vectors: The carriers of DNA molecules The incorporation of haploids in breeding programs is one of the latest techniques used for crop improvement. The present volume comprises 30 chapters by international experts and informs on the methods involved, such as in vitro production of haploids by culture of anthers, studies of pollen embryogenesis, genetic analysis of haploids.
A fast dash through biology when unknown causes start knocking off citizens of Union City. Newspaperman Travis, hospitalized, is in on the first case, sees a beautiful blonde administer a lethal hypodermic, ties in with the police to work it out how the males are being destroyed. Film, radio and TV are affected by radiation and the discovery of a new race &#; the haploids (women of sterile. Haploid induction. Both in vitro and in vivo methods can be used to obtain maize haploids; however, in vitro methods have shown little promise to reliably produce the large numbers of DH lines required by maize breeding programs, and as a result are currently not being used (Chaikam ; Liu et al. ).In contrast, in vivo haploid induction paved the way for large-scale production of .
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The Haploids book. Read 3 reviews from the world's largest community for readers. [Front Cover]ONE WOMAN LEADS A WAR BETWEEN THE SEXES[Back Cover]I /5.
That said, this book was essentially a speculative look at feminazi's use of genetics to end the need for males in the population. Genocide in other words. Given the current state of genome science, as well as the militance of some groups, it was an amazing glimpse at the future in the mid 20th century/5(5).
A doubled haploid (DH) is a genotype formed when haploid cells undergo chromosome doubling. Artificial production of doubled haploids is important in plant breeding.
Haploid cells are produced from pollen or egg cells or from other cells of the gametophyte, then by induced or spontaneous chromosome doubling, a doubled haploid cell is produced, which can be grown into a doubled haploid plant. Haploids may be originated from a gametic cell in the embryo sac or in the pollen grain.
In haploids, gametic number (n) may not be equivalent to x. Haploids may be divided into two categories: Monoploids (Monohaploids): Haploids that are derived from a diploid and x is one genomic complement is termed as monoploids.
e.g. maize, barley etc. Abstract. Haploid plants have the gametophytic number of chromosomes, that is a single set of chromosomes in the sporophyte. Their significance for plant improvement, and as a tool in various disciplines of plant science has been stressed (see Kasha, a).Since haploids are of great importance, especially in studies on the induction of mutations and also for the production of.
The discovery of haploids in higher plants led to the use of doubled haploid (DH) technology in plant breeding. This article provides the state of the art on DH technology including the induction and identification of haploids, what factors influence haploid induction, molecular basis of microspore embryogenesis, the genetics underpinnings of haploid induction and its use in plant.
About this book. Introduction. The production of doubled haploids has become a necessary tool in advanced plant breeding institutes and commercial companies for breeding many crop species. However, the development of new, more efficient and cheaper large scale production protocols has meant that doubled haploids are also recently being applied.
Haploid definition, single; simple. See more. Collins English Dictionary - Complete & Unabridged Digital Edition © William Collins Sons & Co. Ltd.Jensen, CJChromosome Doubling Techniques in Haploids.
in Haploids in Higher Plants: Advances and Potential, Proceedings. The University of Guelph, pp. Haploids in Higher Plants: Advances and Potential, Guelph, June, 01/01/ The production of doubled haploids has become a necessary tool in advanced plant breeding institutes and commercial companies for breeding many crop species.
However, the development of new, more efficient and cheaper large scale production protocols has meant that doubled haploids are also. Production and subsequent conversion of haploids into doubled haploids has many applications in genetics and plant breeding (Dunwell ; Murovec and Bohanec ).
However, production of such. haploid meaning: 1. having a single set of chromosomes (= structures containing chemical patterns that control what. Learn more. Define haploids. haploids synonyms, haploids pronunciation, haploids translation, English dictionary definition of haploids.
adj. Having a single set of unpaired chromosomes, as in a germ cell, such as an egg or sperm, or in a moss plant or a drone bee. ‘Meiosis is the program used by sexually reproducing organisms to produce haploids from diploid precursors.’ More example sentences ‘The next two sections illustrate how to do this by carrying out the calculations for autosomal genes in dioecious haploids and for autosomal, sex-linked, and cytoplasmic genes in diploids.’.
The search for natural haploids and methods to induce them has been ongoing since the beginning of the 20th century. Preview this book» What people are saying - Write a review/5(2). Haploids and Doubled Haploids in Plant Breeding, Plant Breeding, Ibrokhim Y. Abdurakhmonov, IntechOpen, DOI: / Available from: Jana Murovec and.
The Haploids - Kindle edition by Sohl, Jerry. Download it once and read it on your Kindle device, PC, phones or tablets. Use features like bookmarks, note taking and highlighting while reading The Haploids/5(5). This is the first manual presenting a set of protocols for production of doubled haploids (DH) in 22 major crop plant species including 4 tree species.
It contains various protocols and approaches of DH production proven for different germplasm of the same species. The protocols describe in detail all steps of DH production - from donor plants growth conditions, through in vitro procedures 3/5(3).
Haploid plants have the gametophytic number of chromosomes. They are of great importance, especially in studies on the induction of muta tions and also for the production of homozygous plants, they are needed in large numbers.
The conventional methods employed by plant breeders for their. A total of doubled haploids were produced from 12 of these lines, by the in vitro method of Fletcher et al. (), and lines were subsequently selected from the doubled haploids for having canola-quality seed glucosinolate levels (Dosdall.
Haploid Definition. Haploid is the condition of a cell having a one set of chromosomes. Ploidy refers to the number of copies of the genome. Humans, and many other organisms, are diploid organisms. This means that the majority of their lifecycle is spent with two copies of the genome in.
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Customer Favorites. New Releases Coming Soon Boxed Sets Signed Books Books by Author Brand: ReAnimus Press.Haploid, a cell that has one complete set of chromosomes.
Diploid, a cell that has two complete sets of chromosomes. That's the short answer to haploid vs diploid, but there is a lot more to learn. We'll tell you the differences between haploid and diploid, the similarities, and how to remember them.
