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Combining Genetic Gain and Diversity in Plant Breeding: Heritability of Root Selection in Wheat Populations

dc.date.accessioned2022-01-05T12:05:07Z
dc.date.available2022-01-05T12:05:07Z
dc.date.issued2021-11-18
dc.identifierdoi:10.17170/kobra-202112215305
dc.identifier.urihttp://hdl.handle.net/123456789/13485
dc.description.sponsorshipGefördert durch den Publikationsfonds der Universität Kasselger
dc.language.isoengeng
dc.rightsNamensnennung 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectcomposite cross populationeng
dc.subjectorganic plant breedingeng
dc.subjectcrop diversityeng
dc.subjectgenetic gaineng
dc.subjectearly vigoreng
dc.subject.ddc630
dc.titleCombining Genetic Gain and Diversity in Plant Breeding: Heritability of Root Selection in Wheat Populationseng
dc.typeAufsatz
dcterms.abstractTo increase the resilience of agroecological farming systems against weeds, pests, and pathogens, evolutionary breeding of diversified crop populations is highly promising. A fundamental challenge in population breeding is to combine effective selection and breeding progress while maintaining intraspecific diversity. A hydroponic system was tested for its suitability to non-destructively select root traits on a population level in order to achieve genetic gain and maintain diversity. Forty wheat progenies were selected for long seminal root length (SRL) and 40 for short SRL from a wheat composite cross population grown in a hydroponic system. Wheat progenies were multiplied, and a subset evaluated again in a hydroponic system. Preliminary tests in soil and competition experiments with a model weed were performed. The hydroponic selection for long SRL led to an increase of SRL by 1.6 cm (11.6%) in a single generation. Heritability for selection of SRL was 0.59. Selecting for short SRL had no effect. The preliminary soil-based test confirmed increased shoot length but not increased SRL. Preliminary competition experiments point to slightly improved competitive response of wheat progenies but no improved competitive effect on mustard. These results indicate a heritable selection effect for SRL on a population level, combining genetic gain and intraspecific diversity.eng
dcterms.accessRightsopen access
dcterms.creatorTimaeus, Johannes
dcterms.creatorWeedon, Odette Denise
dcterms.creatorFinckh, Maria Renate
dc.relation.doidoi:10.3390/su132212778
dc.subject.swdAgrarökologieger
dc.subject.swdPflanzenzüchtungger
dc.subject.swdBiodiversitätger
dc.subject.swdResilienzger
dc.subject.swdWeizenger
dc.subject.swdWurzelger
dc.type.versionpublishedVersion
dcterms.source.identifiereissn:2071-1050
dcterms.source.issueIssue 22
dcterms.source.journalSustainabilityeng
dcterms.source.volumeVolume 13
kup.iskupfalse
dcterms.source.articlenumber12778


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