Analysis of 5S rDNA organization and variation in polyploid hybrids from crosses of different fish subfamilies

Qin, Qinbo; He, Weiguo; Liu, Shaojun; Wang, Jing; Xiao, Jun; Liu, Yun

doi:10.1002/jez.b.21346

Cited by 63 publications

(58 citation statements)

References 43 publications

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“…Using red carp as a female parent and Megalobrama amblycephala as a male parent, we carried out a hybridization experiment [67,133]. We obtained fertile allotetraploid and infertile triploid F 1 hybrids.…”

Section: Polyploid Breedingmentioning

confidence: 99%

Development and application of biological technologies in fish genetic breeding

Duan

Xiao

et al. 2015

Sci. China Life Sci.

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Fish genetic breeding is a process that remolds heritable traits to obtain neotype and improved varieties. For the purpose of genetic improvement, researchers can select for desirable genetic traits, integrate a suite of traits from different donors, or alter the innate genetic traits of a species. These improved varieties have, in many cases, facilitated the development of the aquaculture industry by lowering costs and increasing both quality and yield. In this review, we present the pertinent literatures and summarize the biological bases and application of selection breeding technologies (containing traditional selective breeding, molecular marker-assisted breeding, genome-wide selective breeding and breeding by controlling single-sex groups), integration breeding technologies (containing cross breeding, nuclear transplantation, germline stem cells and germ cells transplantation, artificial gynogenesis, artificial androgenesis and polyploid breeding) and modification breeding technologies (represented by transgenic breeding) in fish genetic breeding. Additionally, we discuss the progress our laboratory has made in the field of chromosomal ploidy breeding of fish, including distant hybridization, gynogenesis, and androgenesis. Finally, we systematically summarize the research status and known problems associated with each technology. fish genetic breeding, genetic improvement, biological method, traits, new variety Citation:

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Section: Polyploid Breedingmentioning

confidence: 99%

Development and application of biological technologies in fish genetic breeding

Duan

Xiao

et al. 2015

Sci. China Life Sci.

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“…Distant hybridization of red crucian carp (♀) and blunt snout bream (♂), a combination between the parents with different chromosomal number, has also made great progress [59,113]. In the first generation, sterile triploid hybrids (3n=124, or 2n=3X=124) and bisexual fertile tetraploid hybrids (4n=148, or 2n=4X=148) were obtained.…”

Section: Application Of Polyploid Breeding In Animalsmentioning

confidence: 99%

Polyploid organisms

Song

Liu

Xiao

et al. 2012

Sci. China Life Sci.

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Polyploids are organisms with three or more complete chromosome sets. Polyploidization is widespread in plants and animals, and is an important mechanism of speciation. Genome sequencing and related molecular systematics and bioinformatics studies on plants and animals in recent years support the view that species have been shaped by whole genome duplication during evolution. The stability of polyploids depends on rapid genome recombination and changes in gene expression after formation. The formation of polyploids and subsequent diploidization are important aspects in long-term evolution. Polyploids can be formed in various ways. Among them, hybrid organisms formed by distant hybridization could produce unreduced gametes and thus generate offspring with doubled chromosomes, which is a fast, efficient method of polyploidization. The formation of fertile polyploids not only promoted the interflow of genetic materials among species and enriched the species diversity, but also laid the foundation for polyploidy breeding. The study of polyploids has both important theoretical significance and valuable applications. The production and application of polyploidy breeding have brought remarkable economic and social benefits.polyploid, whole genome duplication, diploidization, distant hybridization, polyploidy breeding Citation:Song C, Liu S J, Xiao J, et al.

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“…DH combines whole genomes from two distinct taxa, which may lead to the changes of the offspring in phenotypes and genotypes (Biradar and Rayburn, 1993;Smith et al, 1990). Of all vertebrate carp (Cyprinus carpio, 2n = 100) (♂) and red crucian carp (2n = 100) (♀) × blunt snout bream (Megalobrama amblycephala, 2n = 48) (♂) (Liu et al, 2001(Liu et al, , 2007Qin et al, 2010) in which two types of allotetraploid hybrids, namely allotetraploid hybrids of red crucian carp × common carp and tetraploid hybrids of red crucian carp × blunt snout bream are established (Liu, 2010). The hybrid lineage of crucian carp (♀) × common carp (♂) is derived from original parents each having 100 chromosomes, while hybrid population of red crucian carp (♀) × blunt snout bream (♂) is derived from the original parents each having different numbers of chromosomes (100 in female parent and 48 in male parent).…”

Section: Introductionmentioning

confidence: 99%