Cytology and Leafspot Resistance of Section Arachis Amphidiploids and their Hybrids with Arachis Hypogaea 1

  title={Cytology and Leafspot Resistance of Section Arachis Amphidiploids and their Hybrids with Arachis Hypogaea 1},
  author={M. E. Gardner and H. Thomas Stalker},
  journal={Crop Science},
On determine la faisabilite de l'utilisation d'amphidiploides de la section diploide d'Arachis pour realiser une introgression avec A.h.. On etudie la resistance de ces hybrides a Cercospora arachidicola 
Utilization of wild relatives in the genetic improvement of Arachis hypogaea L.
  • A. Singh
  • Biology
    Theoretical and Applied Genetics
  • 2004
Crossability, chromosome pairing and pollen and pod fertility in hybrids between A. hypogaea and amphidiploids have revealed that these amphidi ploids can be used as a genetic bridge for the transfer of genes from the wild species into the cultivated groundnut.
Resistance to Leaf Spot Caused by Cercosporidium personatum in Wild Arachis Species
Frequency of infection (number of lesions/cm² leaf area) and percentage defoliation varied greatly within each section and species.
Rooting in Leaf Petioles of Arachis for Cytological Analysis
Method of rooting in petioles was developed for leaves of Arachis plants for chromosome number determination and can be applied also for cytological studies of materials in which seeds are not available or cutting is not feasible.
New hybrids from peanut (Arachis hypogaea L.) and synthetic amphidiploid crosses show promise in increasing pest and disease tolerance.
This study evaluated one cultivar of A. hypogaea (IAC 503), eight synthetic amphidiploids, and the progenies resulting from four distinct combinations of crossing between IAC 503 and four amphidi Ploids to characterize these two groups of materials (amphidiploid and progenie) so that they may be efficiently conserved and used.
Identifying Arachis Amphidiploids Resistant to Foliar Fungal Diseases
The aim of this study was to evaluate eight newly obtained amphidiploids and their parents for resistance to early leaf spot, late Leaf spot, and rust under field conditions for three consecutive years and found that all parental wild species accessions and the derived amphidi ploids were more resistant than A. hypogaea checks.
Arachis Gene Pools and Genetic Improvement in Groundnut
Both conventional and nonconventional crop improvement efforts in groundnut need to concentrate on bridging the yield gap between the potential yield and the realized yield by alleviating major production constraints particularly in rainfed environment.
Foliar fungal disease-resistant introgression lines of groundnut (Arachis hypogaea L.) record higher pod and haulm yield in multilocation testing
Background genotype, environment and genotype × environment interactions are important for expression of resistance governed by the QTL region for groundnut with enhanced resistance to rust and late leaf spot resistance in multilocation testing.