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Inheritance of partial resistance to spot blotch in barley
Author(s) -
Arabi M. I. E.
Publication year - 2005
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/j.1439-0523.2005.01156.x
Subject(s) - biology , diallel cross , cultivar , hybrid , genotype , inoculation , horticulture , randomized block design , leaf spot , agronomy , botany , veterinary medicine , genetics , gene , medicine
Abstract Diallel crosses (without reciprocals) were made among 10 different barley genotypes with genetic variability for spot blotch resistance. Forty‐five F 1 hybrids and their parents were assessed for their combining abilities for the disease resistance. Three experiments, two in a growth chamber on detached leaf and seedlings tests and one in the field on adult plant stages, were undertaken using a randomized complete block design with five replicates. A mixed conidial suspension of nine virulent isolates of the pathogen was used for inoculation. Statistical analysis showed genetic variability for spot blotch resistance. Results showed that the cultivar Banteng, the Ethiopian line CI‐5791 and the Syrian line 79‐SIO‐9 had partial resistance in all experiments. General combining ability was significant, with either positive or negative values. Resistant genotypes show favourable GCA‐effects, and they could therefore be successfully used for breeding purposes.