Journal ArticleDOI
Identification of new sources of resistance to rust and late leaf spot in peanut
TLDR
The characteristic features of these sources of resistance are described, and two genotypes showed high level of resistance to late leaf spot, but were only moderately resistant to rust.Abstract:
A total of 979 germplasm accessions was screened for resistance to rust and late leaf spot in preliminary field trials at ICRISAT Center, Patancheru, India during 1989–1990. Selected genotypes were further evaluated in separate advanced screening trials conducted with erect bunch [Spanish (var. vulgaris) and Valencia (var. fastigiata)], spreading bunch [Virginia bunch (var. hypogaea)], and runner [Virginia runner (var. hypogaea)] types during 1991–1993. Thirty‐eight genotypes (21 erect bunch, 5 spreading bunch, and 12 runner) were identified as resistant to rust, and seven (five erect bunch and two runner) to late leaf spot. Four genotypes (ICG Nos 6843, 10890,11567, and 12112) showed resistance to both rust and late leaf spot; ICG 10881 and ICG 11567 belong to the Spanish bunch group. Two genotypes [BPZ 691 and 259–2 (Red)] showed high level of resistance to late leaf spot, but were only moderately resistant to rust. The characteristic features of these sources of resistance are described, and t...read more
Citations
More filters
Journal ArticleDOI
Components of resistance to late leaf spot and rust among interspecific derivatives and their significance in a foliar disease resistance breeding in groundnut ( Arachis hypogaea L.)
TL;DR: Genotypic differences were highly significant for all the traits studied and selection based on resistance components together with green leaf area retained on the plant should be the basis of selecting for resistance to rust in breeding programs.
Sources of resistance to groundnut fungal and bacterial diseases: an update and appraisal
A K Singh,V K Mehan,S N Nigam +2 more
TL;DR: The list of sources of resistance to six important fungal and bacterial diseases is updated and some of their agronomic traits and reaction to other diseases are provided.
Journal ArticleDOI
A SNP-Based Linkage Map Revealed QTLs for Resistance to Early and Late Leaf Spot Diseases in Peanut (Arachis hypogaea L.).
Suoyi Han,Mei Yuan,Josh Clevenger,Chun Li,Austin K. Hagan,Xinyou Zhang,Charles Chen,Guohao He +7 more
TL;DR: Analysis of the interval sequences has indicated that a major QTL for resistance to late leaf spot anchored by two NBS-LRR resistance genes on chromosome B05 was associated with resistance genes for early leaf spot.
Journal ArticleDOI
Genetic analysis of resistance to late leaf spot in interspecific groundnuts
Janila Pasupuleti,Venuprasad Ramaiah,Abhishek Rathore,Aruna Rupakula,R. Kanaka Reddy,F. Waliyar,Shyam N. Nigam +6 more
TL;DR: It would be worthwhile to use the resistance donor as female parent to tap maternal effects of resistance to LLS, and the parent, ICG 11337 would be a good donor in breeding programs.
Journal ArticleDOI
Peanut rust (Puccinia arachidis Speg.) disease: its background and recent accomplishments towards disease resistance breeding.
TL;DR: The present review describes different aspects of P. arachidis especially its symptomatology, cell biological aspects of pathogenesis, epidemiology, and physiology of resistance as well as developments on genetics and genomics of host resistance, and resistance breeding to understand the behavior of this causal organism and the host resistance and design the breeding approaches to check the spread of the disease.
References
More filters
Journal ArticleDOI
Resistance to rust and late leafspot diseases in some genotypes of Arachis hypogaea.
TL;DR: Several genotypes in some peanut genotypes were found to be resistant to both rust and late leafspot and should be useful sources of multiple disease-resistance in a breeding program.
Journal ArticleDOI
Origins of resistances to rust and late leaf spot in peanut (Arachis hypogaea, Fabaceae)
TL;DR: The cultivated peanut (Arachis hypogaea, Fabaceae) is believed to have originated along the eastern slopes of the Andes in Bolivia and northern Argentina, and is now grown throughout tropical and warm temperate regions.
Research on fungal diseases of groundnut at ICRISAT.
TL;DR: Investigations carried out during the past 4 years on important foliar and soilborne diseases of groundnut are briefly reviewed.
Early and Late Leaf Spots of Groundnut. Information Bulletin No.21
TL;DR: This bulletin describes disease symptoms and explains how the two leaf spots can be differentiated, and the morphology and taxonomy of each pathogen are described, and disease cycles are outlined.
Journal ArticleDOI
Effect of crop age on primary gradients of late leaf spot (Cercosporidium personatum) on groundnut
S. Savary,G. Van Santen +1 more
TL;DR: The results suggest that the strength of the sources was reducing by abscission of infected leaves in the sources of the younger plots, whereas accessibility of the canopy to the transported spores was reduced by increasing canopy density in the older ones.