Relationship of intra- and interpopulation tropical maize single cross hybrid performance and genetic distances computed from AFLP and SSR markers

dc.creatorBarbosa, AMM
dc.creatorGeraldi, IO
dc.creatorBenchimol, LL
dc.creatorGarcia, AAF
dc.creatorSouza, CL
dc.creatorSouza, AP
dc.date2003
dc.date2014-11-15T09:53:02Z
dc.date2015-11-26T17:19:20Z
dc.date2014-11-15T09:53:02Z
dc.date2015-11-26T17:19:20Z
dc.date.accessioned2018-03-29T00:07:02Z
dc.date.available2018-03-29T00:07:02Z
dc.identifierEuphytica. Kluwer Academic Publ, v. 130, n. 1, n. 87, n. 99, 2003.
dc.identifier0014-2336
dc.identifierWOS:000180947100010
dc.identifier10.1023/A:1022381008721
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/80161
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/80161
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/80161
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1282883
dc.descriptionTwo sets of tropical maize inbred lines, one derived from the BR-105 population and another derived from the BR-106 population, were assayed for Amplified Fragment Length Polymorphism's (AFLP) and for Simple Sequence Repeat (SSR), in order to investigate genetic distances among lines and their relationship to heterotic group assignment and single cross yield performance. Genetic distances were on average greater for interpopulation than intrapopulation crosses for both AFLP and SSR. Cluster analysis was in agreement with the original assignment for heterotic groups. Inbred line 16, derived from BR-106, was assigned to the BR-105 set, in agreement with single cross yield performance from intra- and interpopulation crosses. However, the same pattern was not observed for SSR where another two lines from BR-106 were also assigned to the BR-105 set. Correlation coefficients of genetic distances (GD) with F-1 grain yield and heterosis were high for BR-106 x BR-106 crosses (0.91** and 0.82** for AFLP and SSR, respectively), moderate for BR-105 x BR-105 crosses (0.52* for AFLP and SSR) and low for BR-105 x BR-106 crosses (0.29 and 0.16 for AFLP and SSR, respectively). The lower correlation at interpopulation level was due to the smaller range of GD caused probably by a previous selection for combining ability. General results showed that the AFLP molecular marker is efficient in assigning maize lines to heterotic groups and that AFLP-based GD is suitable for predicting the maize single cross performance for intrapopulation crosses of broad-based populations. The efficiency of SSR in assigning lines to heterotic groups and for predicting single cross performance was smaller than AFLP.
dc.description130
dc.description1
dc.description87
dc.description99
dc.languageen
dc.publisherKluwer Academic Publ
dc.publisherDordrecht
dc.publisherHolanda
dc.relationEuphytica
dc.relationEuphytica
dc.rightsfechado
dc.sourceWeb of Science
dc.subjectAFLP
dc.subjectgenetic diversity
dc.subjectheterosis
dc.subjecthybrid performance
dc.subjectmolecular markers
dc.subjectSSR
dc.subjectZea mays L.
dc.subjectFragment-length-polymorphisms
dc.subjectInbred Lines
dc.subjectRflps
dc.subjectDiversity
dc.subjectHeterosis
dc.subjectHeterozygosity
dc.subjectSimilarities
dc.subjectYield
dc.subjectLoci
dc.subjectRapd
dc.titleRelationship of intra- and interpopulation tropical maize single cross hybrid performance and genetic distances computed from AFLP and SSR markers
dc.typeArtículos de revistas


Este ítem pertenece a la siguiente institución