Assessment of 16 Peanut (Arachis hypogaea L.) CSSLs Derived from an Interspecific Cross for Yield and Yield Component Traits: QTL Validation

dc.contributor.authorTossim, Hodo-Abalo
dc.contributor.authorNguepjop, Joel Romaric
dc.contributor.authorDiatta, Cyril
dc.date.accessioned2023-04-26T15:01:19Z
dc.date.available2023-04-26T15:01:19Z
dc.date.issued2020-04-18
dc.descriptionAgronomy2020, 10, 583; doi:10.3390/agronomy10040583en_US
dc.description.abstractCultivated peanut is an allotetraploid (2n = 4× = 40) with narrow genetic diversity. In previous studies, we developed an advanced backcross quantitative trait loci (AB-QTL) population from the cross between the synthetic allotetraploid ((Arachis ipaensis × Arachis duranensis)4×) and the cultivated variety Fleur11, and mapped several quantitative trait loci (QTLs) involved in yield and yield components. We also developed a chromosome segment substitution line (CSSL) population as a way to mendelize the QTLs and analyzing their effects. In this study, 16 CSSLs were used for assessing the contribution of wild alleles in yield performance and stability across environments, as well as validating QTLs for pod and seed size. The CSSLs and the recurrent parent Fleur11, used as a check, were assessed using an alpha lattice design in three locations during two consecutive rainy seasons in Senegal, totaling six environments. Our results showed that the chromosome segments from the wild species, in general, have no yield disadvantage and contributed positive variation to yield-related traits. Most of the QTLs detected for pod and seed size in the AB-QTL on linkage groups A07, A08, A09, and B06 were also found in the CSSLs, showing that the CSSLs used in this study are accurate material for QTL validation. Several new QTLs have also been identified. Two CSSLs (12CS_031 and 12CS_069) showed consistently higher pod and seed size than Fleur11 in all environments, suggesting that the QTLs were consistent and stable. Our study opens the way for pyramiding these QTLs for peanut improvementen_US
dc.description.sponsorshipACE Impact: Agriculture for Food and Nutrition Securityen_US
dc.identifier.uridoi:10.3390/agronomy10040583
dc.identifier.urihttps://datad.aau.org/handle/123456789/1577
dc.language.isoenen_US
dc.publisherMDPI (Multidisciplinary Digital Publishing Institute)en_US
dc.subjectpeanuten_US
dc.subjectwild speciesen_US
dc.subjectseed sizeen_US
dc.subjectyielden_US
dc.subjectQTL validationen_US
dc.subjectAB-QTLen_US
dc.subjectCSSLen_US
dc.subjectUniversité Cheikh Anta Diopen_US
dc.subjectAGRISANen_US
dc.subjectSenegalen_US
dc.titleAssessment of 16 Peanut (Arachis hypogaea L.) CSSLs Derived from an Interspecific Cross for Yield and Yield Component Traits: QTL Validationen_US
dc.typeArticleen_US
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