Origins of resistances to rust and late leaf spot in peanut (Arachis hypogaea, Fabaceae)

Subrahmanyam, P.; Rao, V. Ramanatha; McDonald, D.; Moss, J. P.; Gibbons, R. W.

doi:10.1007/bf02935917

Cited by 50 publications

(41 citation statements)

References 18 publications

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“…Among the biotic stresses, two foliar diseases viz. Late leaf spot (LLS, causal organism Phaeoisariopsis personata) and rust (causal organism Puccinia arachidis) cause more than 50% yield losses (Subrahmanyam et al, 1989), These two diseases occur simultaneously and drastically reduce the yield and quality of haulm. Thus, it necessitated for the identification and utilization of resistant sources in the breeding programmes.…”

Section: Issn: 2319-7706 Volume 7 Number 08 (2018)mentioning

confidence: 99%

Diversity Analysis and Assessment of Association of SSR Markers to Late Leaf Spot and Rust Resistance in Groundnut (Arachis hypogaea L.)

Anamika¹,

Ahamed²,

Amaravathi³

et al. 2018

Int.J.Curr.Microbiol.App.Sci

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Section: Issn: 2319-7706 Volume 7 Number 08 (2018)mentioning

confidence: 99%

Diversity Analysis and Assessment of Association of SSR Markers to Late Leaf Spot and Rust Resistance in Groundnut (Arachis hypogaea L.)

Anamika¹,

Ahamed²,

Amaravathi³

et al. 2018

Int.J.Curr.Microbiol.App.Sci

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“…Subrahmanyam et al (1989) evaluated 96 accessions of wild Arachis species for reactions to late leaf spot and observed that lesions were formed on all accessions, but lesions were small and nonsporulating on all accessions of sections Erectoides, Triseminatae, Extranervosae, Rhizomatosae, and Caulorrhizae. Lesions with diameters ranging from 0.16 to 1.0 mm were, however, found in section Arachis.…”

Section: Breedingmentioning

confidence: 99%

“…Resistance is present in A. hypogaea, with most of the resistant accessions being of subspecies fastigiata (Subrahmanyam et al 1989). Inheritance studies indicated the presence of two or three recessive genes in some crosses, with evidence for epistatic interactions, and with resistance being accompanied by slowing down of disease development (Subrahmanyam et al 1983b).…”

Section: Breedingmentioning

confidence: 99%

Marker‐Assisted Selection for Biotic Stress Resistance in Peanut

Burow¹,

Leal‐Bertioli²,

Simpson³

et al. 2013

Translational Genomics for Crop Breeding

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Peanut is the second-most important legum e grown worldwide. Cultivated peanut is a disomic tetraploid, 2n-4 x -40, with limited genetic diversity due to a genetic bottleneck in formation o f the polyploid from ancestors A. duranensis and A. ipaensis. Consequently, resistance_to biotic stresses is limited in the cultigen; however, w ild species possess strong resistances. Transfer o f these re sistances is hindered by differences o f ploidy, but production o f synthetic amphidiploids, coupled with use o f m olecular markers, enables efficient gene transfer. Marker maps have been made from interspecific crosses, and SSR-based maps from cultivated parents have been developed recently. At least 410 resistance gene analogues have been identified. The first markers for biotic stress tolerance were for root-knot nematode resistance and introgressed from one A. cardenasii chromosome. These and improved markers have been used for marker-assisted backcrossing, contributing to release o f three cultivars. Additional QTLs have been identified since.Early and late leafspots cause significant yield losses worldwide, and resistance depends on multiple genes. U sing interspecific populations, five resistance QTLs for early leafspot were identified using greenhouse inoculations, and five QTLs for late leafspot were identified using detached leaf assays. U sing cultivated species populations, 28 QTLs were identified for LLS resistance; all but one w ere minor QTLs; the major QTL was donated by an interspecific introgression line parent. Rust often occurs alongside leafspots, and rust resistance was characterized as one major QTL, plus several smaller QTLs. Marker-assisted backcrossing o f this major QTL has been performed into different populations. QTLs for resistance to other biotic stresses have been identified, namely to groundnut rosette virus, Sclerotinia blight, afiatoxin contamination, aphids, and tomato spotted w ilt virus. Marker-assisted breeding is still in early stages, and develop ment o f more rapid and inexpensive markers from transcriptome and genom e sequencing is expected to accelerate progress.

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“…Groundnut is a rich source of protein, dietary fiber, minerals, and vitamins 13 . Groundnut production all over the world is hampered by several biotic stresses that result in severe yield reduction 18,21 . Of different soilborne diseases affecting its production, collar rot (Aspergillus niger) 1 ; stem rot (Sclerotium rolfsii) 11 ; and bacterial wilt (Ralstonia solanacearum) 9 are the devastating ones in all crop growing areas of the world.…”

Section: Introductionmentioning

confidence: 99%

Prevalence of Aspergillus flavus Infection and Aflatoxin Contamination of Groundnut in Telangana and Andhra Pradesh

Teja¹,

Kumar²,

Srilakshmi³

et al. 2017

Int. J. Pure App. Biosci.

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Origins of resistances to rust and late leaf spot in peanut (Arachis hypogaea, Fabaceae)

Cited by 50 publications

References 18 publications

Diversity Analysis and Assessment of Association of SSR Markers to Late Leaf Spot and Rust Resistance in Groundnut (Arachis hypogaea L.)

Diversity Analysis and Assessment of Association of SSR Markers to Late Leaf Spot and Rust Resistance in Groundnut (Arachis hypogaea L.)

Marker‐Assisted Selection for Biotic Stress Resistance in Peanut

Prevalence of Aspergillus flavus Infection and Aflatoxin Contamination of Groundnut in Telangana and Andhra Pradesh

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