Query (optional)   in Class  All Allele Author Colleague Collection Assembly Gene Gene Class Gene Product Germplasm Image Journal Keyword Library Locus Map Map Data Marker Pathology Polymorphism Probe Protein QTL Rearrangement Reference Sequence Species Trait Trait Study Two Point Data  

---

GrainGenes Reference Report: JAS-133-297

[Submit comment/correction]

Reference	JAS-133-297
Title	Evaluation and inheritance of resistance to Russian wheat aphid in barley
Journal	The Journal of Agricultural Science
Year	1999
Volume	133
Pages	297-301
Author	Assad MT Ravary Z Pourhadji A Ahmadi AA Emam Y
Abstract	Summary: Russian wheat aphid (RWA), Diuraphis noxia is a serious pest of cereals in various regions of the world. Seventy-six barley genotypes collected from different areas in Iran were subjected to an initial mass screening test and six susceptible and 17 apparently resistant genotypes were identified. To determine resistance mechanisms, antixenosis, antibiosis and tolerance tests were conducted and selected genotypes were ranked according to their plant resistance indices. Four crosses were made between the two most resistant lines (Shz.B-106, and Shz.B-108) and two most susceptible lines (Shz.B-105 and Shz.B-107). F1, F2 and BCF1 (backcross to the resistant parent) seedlings were screened for RWA resistance in the greenhouse by artificial infection. Resistance in Shz.B-106 was apparently controlled by a semi-dominant gene, whereas resistance in Shz.B-108 was controlled by a dominant one
Keyword	[ Hide all but 1 of 16 ] antibiosis backcross barley diuraphis noxia genetic variation hordeum vulgare infection inheritance insect pests iran pest resistance plant breeding resistance screening tolerance variety trials

GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture.