Biological Implications in Cassava for the Production of Amylose-Free Starch - Impact on Root Yield and Related Traits

cg.contacth.ceballos@cgiar.orgen_US
cg.contributor.centerUniversity of Agricultural Sciences Bangalore - UAS Bangaloreen_US
cg.contributor.centerInternational Center for Tropical Agriculture - CIATen_US
cg.contributor.crpCRP on Roots, Tubers and Bananas - RTBen_US
cg.contributor.funderNot Applicableen_US
cg.coverage.countryCOen_US
cg.coverage.regionSouth Americaen_US
cg.creator.idCeballos, Hernan: 0000-0002-8744-7918en_US
cg.creator.idDufour, Dominique: 0000-0002-6046-0741en_US
cg.date.embargo-end-dateen_US
cg.identifier.doihttps://dx.doi.org/10.3389/fpls.2016.00604en_US
cg.isijournalISI Journalen_US
cg.issn1664-462Xen_US
cg.journalFrontiers in Plant Scienceen_US
cg.subject.agrovocplant genetic resourcesen_US
cg.subject.agrovoceconomic impacten_US
cg.volume7en_US
dc.contributorCeballos, Hernanen_US
dc.contributorDufour, Dominiqueen_US
dc.creatorKarlstrom, Amandaen_US
dc.date.accessioned2017-08-21T12:39:25Z
dc.date.available2017-08-21T12:39:25Z
dc.description.abstractCassava (Manihot esculenta, Crantz) is an important food security crop, but it is becoming an important raw material for different industrial applications. Cassava is the second most important source of starch worldwide. Novel starch properties are of interest to the starch industry, and one them is the recently identified amylose-free (waxy) cassava starch. Waxy mutants have been found in different crops and have been often associated with a yield penalty. There are ongoing efforts to develop commercial cassava varieties with amylose-free starch. However, little information is available regarding the biological and agronomic implications of starch mutations in cassava, nor in other root and tuber crops. In this study, siblings from eight full-sib families, segregating for the waxy trait, were used to determine if the mutation has implications for yield, dry matter content (DMC) and harvest index in cassava. A total of 87 waxy and 87 wild-type starch genotypes from the eight families were used in the study. The only significant effect of starch type was on DMC (p < 0.01), with waxy clones having a 0.8% lower content than their wild type counterparts. There was no effect of starch type on fresh root yield (FRY), adjusted FRY and harvest index. It is not clear if lower DMC is a pleiotropic effect of the waxy starch mutation or else the result of linked genes introgressed along with the mutation. It is expected that commercial waxy cassava varieties will have competitive FRYs but special efforts will be required to attain adequate DMCs. This study contributes to the limited knowledge available of the impact of starch mutations on the agronomic performance of root and tuber crops.en_US
dc.formatPDFen_US
dc.identifierhttps://cgspace.cgiar.org/handle/10568/75547en_US
dc.identifierhttps://mel.cgiar.org/reporting/downloadmelspace/hash/bu8pmypJ/v/cdfdd1440ce54a9b0c38ab41cb7401b4en_US
dc.identifier.citationAmanda Karlstrom, Hernan Ceballos, Dominique Dufour. (20/5/2016). Biological Implications in Cassava for the Production of Amylose-Free Starch - Impact on Root Yield and Related Traits. Frontiers in Plant science, 7.en_US
dc.identifier.statusOpen accessen_US
dc.identifier.urihttps://hdl.handle.net/20.500.11766/7463
dc.languageenen_US
dc.publisherFrontiers Mediaen_US
dc.rightsCC-BY-4.0en_US
dc.sourceFrontiers in Plant science;7,(2016)en_US
dc.subjectagroeconomicsen_US
dc.subjectwaxy starchen_US
dc.subjectyield penaltyen_US
dc.subjectcassava marketsen_US
dc.subjectroot and tuber cropen_US
dc.subjectCassavaen_US
dc.titleBiological Implications in Cassava for the Production of Amylose-Free Starch - Impact on Root Yield and Related Traitsen_US
dc.typeJournal Articleen_US
dcterms.available2016-05-20en_US
mel.impact-factor4.495en_US

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