Breeding Lupinus albus for resistance to the root pathogen Pleiochaeta setosa

Luckett, David J.; Cowley, Raymond; Richards, Mark F.; Roberts, David M.

doi:10.1007/s10658-009-9465-8

Cited by 13 publications

(8 citation statements)

References 11 publications

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“…In general, however, the local accessions showed moderate resistance to lupin rust. Occurrences and importance of those white lupin diseases, and resistance breeding achievements have been reported in different parts of the world (Thomas, 2003;Thomas et al, 2008a;Luckett et al, 2009).…”

Section: Discussionmentioning

confidence: 99%

Extent and pattern of genetic diversity in Ethiopian white lupin landraces for agronomical and phenological traits

Atnaf¹,

Tesfaye²,

Dagne³

et al. 2015

Afr. Crop Sci. J.

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White lupin (Lupinus albus) is one of four economically important species of the Lupinus genus, and has been traditionally cultivated for thousands of years along the Nile valley, including in Ethiopia. An experiment comprising of 143 Ethiopian White lupin landraces and one genotype from Germany, was undertaken at Merawi in Ethiopia. The objective of the study was to cluster the Ethiopian white lupin accessions into similarity groups and assess the extent and pattern of diversity of the accessions. Data on 10 quantitative agronomic traits were recorded. Landraces significantly differed in most of the traits studied, and a significant number of local accessions performed as high as 5 metric tonnes per hectare of grain yield. Cluster analysis showed that landraces were grouped into seventeen clusters of different sizes, of which five were singletons. Some landraces were grouped together regardless of their geographic origin. On the other hand, landraces from Awi, South Gondar and West Gojam in Ethiopia were distributed over many clusters. Hence, the result did not support a definite relationship between geographic diversity and genetic diversity. Genetic distances between many pairs of clusters were significant, justifying crosses between parents from them to be desirable genetic recombinations and, hence, transgressive segregants.

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Section: Discussionmentioning

confidence: 99%

Extent and pattern of genetic diversity in Ethiopian white lupin landraces for agronomical and phenological traits

Atnaf¹,

Tesfaye²,

Dagne³

et al. 2015

Afr. Crop Sci. J.

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show abstract

“…Monomorphic markers were excluded from subsequent analysis. The samples were grouped into two populations: advanced breeding lines/cultivars (64) and landraces (30). Shannon Information Index (I) and the number of unique alleles were calculated using the GenAIEx program version 6.1 [40].…”

Section: Genotyping and Data Analysismentioning

confidence: 99%

“…The phenotyping methods for PRR in L. albus have been previously described [30]. The important features are summarised here.…”

Section: Phenotyping For Prr Resistancementioning

confidence: 99%

“…The spore suspension was adjusted so that when mixed with a known volume of potting mix (see below) the final concentration was 1000 spores g . In all screening experiments two standard 'control' genotypes were included: P25758 (a very-resistant landrace), and Kiev Mutant (a highly susceptible cultivar from Ukraine) [30] [49] [50].…”

Section: Phenotyping For Prr Resistancementioning

confidence: 99%

“…The scoring scale was either 0 -9 (where 0 = no lesion, and 9 = a lesion that has completely severed the root) [30], or 0 -5 (where 0 = no lesion, and 5 = root severance). Small lateral roots were ignored.…”

Section: Phenotyping For Prr Resistancementioning

confidence: 99%

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Localisation of Loci Involved in Resistance to Diaporthe toxica and Pleiochaeta setosa in White Lupin (Lupinus albus L.)

Raman¹,

Vipin²,

Luckett³

et al. 2014

OJGen

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L. albus is an annual grain-legume crop mainly grown for high-protein fodder worldwide but also to produce large seeds for human consumption as a snack-food. In order to make genetic gains in grain yield, assessment of the genetic variation in the germplasm and identification of loci associated with agronomic traits are essential. Phomopsis blight (PB) and Pleiochaeta root rot (PRR), caused by the fungal pathogens Diaporthe toxica and, Pleiochaeta setosa respectively, are two major yield-limiting diseases of the L. albus crop. The extent of genetic diversity in 94 accessions of L. albus comprising: Australian and exotic cultivars, advanced breeding lines, and landraces originating from 26 different countries was determined utilizing PCR-based genic, and microarraybased Diversity Arrays Technology (DArT™), markers. All accessions were evaluated for resistance to PB in two plant tissues (leaves and stems) using either sprayed or injected spore inoculum. A subset of 58 accessions was further evaluated for resistance to PRR by growing seedlings in spore-infested potting mix. The combined data of 724 (50 genic-and 674 DArT) markers were used for cluster analysis. A subset of 324 markers with call rate ≥95% and predicted disease scores of different genotypes were used to identify marker loci accounting for phenotypic variation in PB and PRR resistance using linear regression analysis. Several markers showed significant association with PB or PRR resistance at P < 0.05. Our results showed that favourable alleles for PB and PRR resistance are present in the diverse accessions investigated and they will provide

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Evaluation of resistance to Phomopsis stem blight (caused by Diaporthe toxica) in Lupinus albus

et al. 2012

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Breeding Lupinus albus for resistance to the root pathogen Pleiochaeta setosa

Abstract: Pleiochaeta root rot (PRR) caused by

Cited by 13 publications

References 11 publications

Extent and pattern of genetic diversity in Ethiopian white lupin landraces for agronomical and phenological traits

Extent and pattern of genetic diversity in Ethiopian white lupin landraces for agronomical and phenological traits

Localisation of Loci Involved in Resistance to <i>Diaporthe toxica</i> and <i>Pleiochaeta setosa</i> in White Lupin (<i>Lupinus albus</i> L.)

Evaluation of resistance to Phomopsis stem blight (caused by Diaporthe toxica) in Lupinus albus

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Breeding Lupinus albus for resistance to the root pathogen Pleiochaeta setosa

Abstract: Pleiochaeta root rot (PRR) caused by

Cited by 13 publications

References 11 publications

Extent and pattern of genetic diversity in Ethiopian white lupin landraces for agronomical and phenological traits

Extent and pattern of genetic diversity in Ethiopian white lupin landraces for agronomical and phenological traits

Localisation of Loci Involved in Resistance to &lt;i&gt;Diaporthe toxica&lt;/i&gt; and &lt;i&gt;Pleiochaeta setosa&lt;/i&gt; in White Lupin (&lt;i&gt;Lupinus albus&lt;/i&gt; L.)

Evaluation of resistance to Phomopsis stem blight (caused by Diaporthe toxica) in Lupinus albus

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Localisation of Loci Involved in Resistance to <i>Diaporthe toxica</i> and <i>Pleiochaeta setosa</i> in White Lupin (<i>Lupinus albus</i> L.)