GrainGenes Reference Report: PMP-45-219
Reference
PMP-45-219
Title
Role of partial resistance to Puccinia hordei in barley in the defence of barley to inappropriate rust fungi
Journal
Physiology and Molecular Plant Pathology
Year
1994
Volume
45
Pages
219-228
Author
Zhang H
[ Show all 6 ]
Abstract
The partial resistance (PR) of barley to Puccinia hordei and the non-host reaction to inappropriate rust fungi are both based on a pre-haustorial barrier It has been suggested that genes for PR in barley also confer resistance to inappropriate rust fungi This hypothesis was tested by determining the correlation between the level of PR to P hordei and the level of resistance to two inappropriate rust species in barley seedlings. The latent period of P. hordei and infectibility by P. recondita f.sp. tritici and by P. hordei-murini showed continuous segregation among the F8 lines derived from two crosses between barley lines. The significant correlation between these parameters suggests that genes for partial resistance to P. hordei in barley play a role in the resistance to P. recondita f.sp. tritici. There is evidence, however, that a large part of the genetic variation between the lines for resistance to P. recondita f.sp. tritici and to P. hordei-murini is not associated with the determination of the latent period of P. hordei. Lines with relative susceptibility to P. recondita f.sp. tritici also tended to be relatively susceptible to P. hordei-murini. These results indicate that some of the genes for resistance segregating in the progenies studied in this work are effective against more than one rust fungal species.
Keyword
crosses
[ Show all 16 ]
GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture.
GrainGenes Reference Report: PMP-45-219
|
| |||
|
| |||
|
| |||
|
| |||
|
| |||
|
| |||
|
| |||
|
| |||
|
|
GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture. | |||