Genetic mapping of QTLs affecting productivity and plant architecture in a full-sib cross from non-inbred parents in Cassava (Manihot esculenta Crantz)

Okogbenin, Emmanuel; Fregene, Martin A.

doi:10.1007/s00122-003-1383-0

Cited by 58 publications

(42 citation statements)

References 37 publications

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“…Kearsey and Farquhar, 1998;Mauricio, 2001; Erickson et al, 2004). Developmental traits have been dissected in a wide range of species including for instance: leaf features in the European beech tree (Fagus sylvatica L.) (Scalfi et al, 2004) or the pasture legume Stylosanthes scabra (Thumma et al, 2001); branching pattern in cassava (Manihot esculenta Crantz) (Okogbenin and Fregene, 2003); wood properties in loblolly pine (Pinus taeda L.) (Brown et al, 2003); or growth traits in Douglas fir (Pseudotsuga menziesii Mirb.) (Jermstad et al, 2003) and chestnut (Castanea sativa Mill.)…”

Section: Forward Analysis: Genetic and Genomic Tools For Qtl Mapping mentioning

confidence: 99%

From phenotypic to molecular polymorphisms involved in naturally occurring variation of plant development

Alonso‐Blanco

Méndez‐Vigo²,

Koornneef³

2005

Int. J. Dev. Biol.

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An enormous amount of naturally occurring genetic variation affecting development is found within wild and domesticated plant species. This diversity is presumably involved in plant adaptation to different natural environments or in human preferences. In addition, such intraspecific variation provides the basis for the evolution of plant development at larger evolutionary scales. Natural phenotypic differences are now amenable to genetic dissection up to the identification of causal DNA polymorphisms. Here we describe 30 genes and their functional nucleotide polymorphisms currently found as underlying allelic variation accounting for plant intraspecific developmental diversity. These studies provide molecular and cellular mechanisms that determine natural variation for quantitative and qualitative traits such as: fruit and seed morphology, colour and composition; flowering time; seedling emergence; plant architecture and inflorescence or flower morphology. Besides, analyses of flowering time variation within several distant species allow molecular comparisons between species, which are detecting homologous genes with partly different functions and unrelated genes with analogous functions. Thus, considerable gene function differences are being revealed also among species. Inspection of a catalogue of intraspecific nucleotide functional polymorphisms shows that transcriptional regulators are the main class of genes involved. Furthermore, barely more than half of the polymorphisms described are located in coding regions and affect protein structure, while the rest are regulatory changes altering gene expression. These limited analyses of intraspecific developmental variation support Doebley and Lukens´s proposition (1998) that modifications in cis -regulatory regions of transcriptional regulators represent a predominant mode for the evolution of novel forms, but await more detailed studies in wild plant species. KEY WORDS: evolutionary developmental biology (evo-devo), intraspecific (within-species) variation, quantitative trait locus (QTL), functional polymorphism, adaptation, domesticationNaturally occurring intraspecific variation: a genetic resource for the study of adaptation and evolution of plant development Plant diversity has fascinated mankind throughout history, primarily due to the tremendous variation that exists in nature for morphological and other developmental traits. The fitness effects of such naturally occurring variation present among species (interspecific) have driven plant (macro)evolution by natural selection, this developmental diversity being the basis of plant taxonomy and phylogeny (Cronk, 2001). In addition, comparable developmental variation exists within many species (intraspecific), which likely reflects adaptations to different natural environments and it is the origin of plant species differentiation (Linhart and Grant, 1996). Humans have used this intraspecific variation Int. J. Dev. Biol. 49: 717-732 (2005) doi: 10.1387/ijdb.051994ca *Address correspondence to: Dr. C...

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Section: Forward Analysis: Genetic and Genomic Tools For Qtl Mapping mentioning

confidence: 99%

From phenotypic to molecular polymorphisms involved in naturally occurring variation of plant development

Alonso‐Blanco

Méndez‐Vigo²,

Koornneef³

2005

Int. J. Dev. Biol.

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“…The map has so far provided initial tools for genetic analysis of important traits of cassava (Jorge et al, 2000(Jorge et al, , 2001Akano et al, 2002;Okogbenin & Fregene, 2002;Okogbenin & Fregene, 2003), as a first step towards such a rational use of molecular markers in cassava breeding.…”

Section: Introductionmentioning

confidence: 99%

An SSR-based molecular genetic map of cassava

2006

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Microsatellites or simple sequence repeats (SSR) are the markers of choice for molecular genetic mapping and marker-assisted selection in many crop species. A microsatellitebased linkage map of cassava was drawn using SSR markers and a F 2 population consisting of 268 individuals. The F 2 population was derived from selfing the genotype K150, an early yielding genotype from an F 1 progeny from a cross between two noninbred elite cassava varieties, TMS 30572 and CM 2177-2 from IITA and CIAT respectively. A set of 472 SSR markers, previously developed from cassava genomic and cDNA libraries, were screened for polymorphism in K150 and its parents TMS 30572 and

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“…Os caracteres mencionados são quantitativos e de herança poligênica (FUKUDA, 1999;FUKUDA et al, 2003;OKOGBENIN;CEBALLOS et al, 2004;NEBIYU, 2006;KIZITO et al, 2007;OJULONG et al, 2008). No entanto, raras são as estimativas de herdabilidade para esses caracteres nas condições brasileiras.…”

Section: Introductionunclassified

Avaliação genotípica de acessos de mandioca no Amazonas e estimativas de parâmetros genéticos

Barreto¹,

Resendes²

2010

RCA

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Genetic mapping of QTLs affecting productivity and plant architecture in a full-sib cross from non-inbred parents in Cassava (Manihot esculenta Crantz)

Cited by 58 publications

References 37 publications

From phenotypic to molecular polymorphisms involved in naturally occurring variation of plant development

From phenotypic to molecular polymorphisms involved in naturally occurring variation of plant development

An SSR-based molecular genetic map of cassava

Avaliação genotípica de acessos de mandioca no Amazonas e estimativas de parâmetros genéticos

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