Genes from wild rice improve yield

Xiao, Jin‐Hua; Grandillo, Silvana; Ahn, Sang Ho; McCouch, Susan R.; Tanksley, Steven D.; Li, Jiming; Yuan, Longping

doi:10.1038/384223a0

Cited by 330 publications

(182 citation statements)

References 7 publications

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“…The introgression of exotic genes that reduced plant height and increased disease resistance and viral resistance in wheat provided the foundation for the 'Green Revolution' and demonstrated the tremendous impact that genetic resources can have on plant production (Hoisington et al 1999). More recently, the advanced backcross quantitative trait locus (AB-QTL) analysis was developed to identify and select new and beneficial QTL alleles of exotic ancestors for introduction into elite gene pools (Tanksley and Nelson 1996;Xiao et al 1996).…”

Section: Introductionmentioning

confidence: 99%

AB-QTL analysis in winter wheat: I. Synthetic hexaploid wheat (T. turgidum ssp. dicoccoides × T. tauschii) as a source of favourable alleles for milling and baking quality traits

et al. 2007

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Section: Introductionmentioning

confidence: 99%

AB-QTL analysis in winter wheat: I. Synthetic hexaploid wheat (T. turgidum ssp. dicoccoides × T. tauschii) as a source of favourable alleles for milling and baking quality traits

et al. 2007

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“…Since QTL detection is carried out in advanced backcross populations, problems associated with considerable phenotypic variation and linkage drag in interspecific crosses are reduced. So far, several reports on the application of the AB-QTL strategy are available for tomato Fulton et al 1997Fulton et al , 2000Fulton et al , 2002Bernacchi et al 1998); rice (Xiao et al 1996(Xiao et al , 1998Moncada et al 2001;Brondani et al 2002;Septiningsih et al 2003;Wu et al 2004); maize (Ho et al 2002); pepper (Rao et al 2003); wheat (Huang et al 2003andbarley (Pillen et al 2003, 2004;Matus et al 2003;Li et al 2004). The favourable effects of the wild barley accession ISR101-23 on yield in two barley feeding varieties recorded by Pillen et al (2003Pillen et al ( , 2004 encourage further investments in the development of AB-populations for the genetic exploitation of diverse exotic barley germplasms.…”

Section: Introductionmentioning

confidence: 99%

AB-QTL analysis in spring barley: II. Detection of favourable exotic alleles for agronomic traits introgressed from wild barley (H. vulgare ssp. spontaneum)

et al. 2006

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The objective of the present study was to identify favourable exotic Quantitative Trait Locus (QTL) alleles for the improvement of agronomic traits in the BC 2 DH population S42 derived from a cross between the spring barley cultivar Scarlett and the wild barley accession ISR42-8 (Hordeum vulgare ssp. spontaneum). QTLs were detected as a marker main effect and/or a marker · environment interaction effect (M · E) in a three-factorial ANOVA. Using field data of up to eight environments and genotype data of 98 SSR loci, we detected 86 QTLs for nine agronomic traits. At 60 QTLs the marker main effect, at five QTLs the M · E interaction effect, and at 21 QTLs both the effects were significant. The majority of the M · E interaction effects were due to changes in magnitude and are, therefore, still valuable for marker assisted selection across environments. The exotic alleles improved performance in 31 (36.0%) of 86 QTLs detected for agronomic traits. The exotic alleles had favourable effects on all analysed quantitative traits. These favourable exotic alleles were detected, in particular on the short arm of chromosome 2H and the long arm of chromosome 4H. The exotic allele on 4HL, for example, improved yield by 7.1%. Furthermore, the presence of the exotic allele on 2HS increased the yield component traits ears per m 2 and thousand grain weight by 16.4% and 3.2%, respectively. The present study, hence, demonstrated that wild barley does harbour valuable alleles, which can enrich the genetic basis of cultivated barley and improve quantitative agronomic traits.

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“…Many genes and gene combinations that could have improved quality were lost during initial domestication (Xiao et al 1996). This is because the genetic potential cannot always be seen in the phenotypes selected for in traditional breeding.…”

Section: Qualitymentioning

confidence: 99%

Genomic breeding for food, environment and livelihoods

2015

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Land use management is a central challenge for the 21st century with unprecedented and competing demands to produce food, feed/fodder, fibre, fuel, and essential ecosystem services which sustain life. Global change requires rapid adaptation in current and emerging crops as well as in the foundation species of natural ecosystems. Revolutions in genomics and high throughput experimentation are transforming breeding so that adaptive traits in new environments can be predicted and selected more directly from germplasm collections of crops and wild species. This genomic breeding is now feasible in almost any species and has promise to help meet the need to feed and nourish over 9 billion people by 2050. Genomic techniques can accelerate our response to food security challenges of yield, quality and resilience and also address environmental security challenges. To achieve its potential there will need to be widespread and ongoing investments in the human capital to promote genomic breeding.

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Genes from wild rice improve yield

Cited by 330 publications

References 7 publications

AB-QTL analysis in winter wheat: I. Synthetic hexaploid wheat (T. turgidum ssp. dicoccoides × T. tauschii) as a source of favourable alleles for milling and baking quality traits

AB-QTL analysis in winter wheat: I. Synthetic hexaploid wheat (T. turgidum ssp. dicoccoides × T. tauschii) as a source of favourable alleles for milling and baking quality traits

AB-QTL analysis in spring barley: II. Detection of favourable exotic alleles for agronomic traits introgressed from wild barley (H. vulgare ssp. spontaneum)

Genomic breeding for food, environment and livelihoods

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