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Article: Genetic diversity and relationships detected by isozyme and RAPD analysis of crop and wild species of Amaranthus

TitleGenetic diversity and relationships detected by isozyme and RAPD analysis of crop and wild species of Amaranthus
Authors
KeywordsAmaranthus
Crop evolution
Genetic diversity
Isozyme
RAPD
Issue Date1997
PublisherSpringer Verlag. The Journal's web site is located at http://link.springer.de/link/service/journals/00122/index.htm
Citation
Theoretical And Applied Genetics, 1997, v. 95 n. 5-6, p. 865-873 How to Cite?
AbstractGenetic diversity and relationships of 23 cultivated and wild Amaranthus species were examined using both isozyme and RAPD markers. A total of 30 loci encoding 15 enzymes were resolved, and all were polymorphic at the interspecific level. High levels of inter-accessional genetic diversity were found within species, but genetic uniformity was observed within most accessions. In the cultivated grain amaranths (A. caudatus, A. cruentus, and A. hypochondriacus), the mean value of H(T) was 0.094, H(s) was 0.003, and G(ST) was 0.977 at the species level. The corresponding values in their putative wild progenitors (A. hybridus, A. powellii, and A. quitensis) were 0.135, 0.004, and 0.963, respectively. More than 600 RAPD fragments were generated with 27 arbitrary 10-base primers. On average, 39.9% of the RAPD fragments were polymorphic among accessions within each crop species; a similar level of polymorphism (42.8%) was present in the putative progenitors, but much higher levels of polymorphism were found in vegetable (51%) and other wild species (69.5%). The evolutionary relationships between grain amaranths and their putative ancestors were investigated, and both the RAPD and isozyme data sets supported a monophyletic origin of grain amaranths, with A. hybridus as the common ancestor. A complementary approach using information from both isozymes and RAPDs was shown to generate more accurate estimates of genetic diversity, and of relationships within and among crop species and their wild relatives, than either data set alone.
Persistent Identifierhttp://hdl.handle.net/10722/84833
ISSN
2015 Impact Factor: 3.9
2015 SCImago Journal Rankings: 1.930
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorChan, KFen_HK
dc.contributor.authorSun, Men_HK
dc.date.accessioned2010-09-06T08:57:39Z-
dc.date.available2010-09-06T08:57:39Z-
dc.date.issued1997en_HK
dc.identifier.citationTheoretical And Applied Genetics, 1997, v. 95 n. 5-6, p. 865-873en_HK
dc.identifier.issn0040-5752en_HK
dc.identifier.urihttp://hdl.handle.net/10722/84833-
dc.description.abstractGenetic diversity and relationships of 23 cultivated and wild Amaranthus species were examined using both isozyme and RAPD markers. A total of 30 loci encoding 15 enzymes were resolved, and all were polymorphic at the interspecific level. High levels of inter-accessional genetic diversity were found within species, but genetic uniformity was observed within most accessions. In the cultivated grain amaranths (A. caudatus, A. cruentus, and A. hypochondriacus), the mean value of H(T) was 0.094, H(s) was 0.003, and G(ST) was 0.977 at the species level. The corresponding values in their putative wild progenitors (A. hybridus, A. powellii, and A. quitensis) were 0.135, 0.004, and 0.963, respectively. More than 600 RAPD fragments were generated with 27 arbitrary 10-base primers. On average, 39.9% of the RAPD fragments were polymorphic among accessions within each crop species; a similar level of polymorphism (42.8%) was present in the putative progenitors, but much higher levels of polymorphism were found in vegetable (51%) and other wild species (69.5%). The evolutionary relationships between grain amaranths and their putative ancestors were investigated, and both the RAPD and isozyme data sets supported a monophyletic origin of grain amaranths, with A. hybridus as the common ancestor. A complementary approach using information from both isozymes and RAPDs was shown to generate more accurate estimates of genetic diversity, and of relationships within and among crop species and their wild relatives, than either data set alone.en_HK
dc.languageengen_HK
dc.publisherSpringer Verlag. The Journal's web site is located at http://link.springer.de/link/service/journals/00122/index.htmen_HK
dc.relation.ispartofTheoretical and Applied Geneticsen_HK
dc.subjectAmaranthusen_HK
dc.subjectCrop evolutionen_HK
dc.subjectGenetic diversityen_HK
dc.subjectIsozymeen_HK
dc.subjectRAPDen_HK
dc.titleGenetic diversity and relationships detected by isozyme and RAPD analysis of crop and wild species of Amaranthusen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0040-5752&volume=94&spage=865&epage=873&date=1997&atitle=Genetic+diversity+and+relationships+detected+by+isozyme+and+RAPD+analysis+of+crop+and+wild+species+of+Amaranthusen_HK
dc.identifier.emailSun, M: meisun@hkucc.hku.hken_HK
dc.identifier.authoritySun, M=rp00779en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1007/s001220050637en_HK
dc.identifier.scopuseid_2-s2.0-0030730364en_HK
dc.identifier.hkuros22576en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0030730364&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume95en_HK
dc.identifier.issue5-6en_HK
dc.identifier.spage865en_HK
dc.identifier.epage873en_HK
dc.identifier.isiWOS:A1997YF71500020-
dc.publisher.placeGermanyen_HK
dc.identifier.scopusauthoridChan, KF=36915734900en_HK
dc.identifier.scopusauthoridSun, M=7403181447en_HK
dc.identifier.citeulike4371329-

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