INHERITANCE OF RESISTANCE TO NET BLOTCH IN BARLEY. II. GENES CONDITIONING RESISTANCE AGAINST RACE W.A.-2
- 1 September 1969
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Genetics and Cytology
- Vol. 11 (3) , 592-597
- https://doi.org/10.1139/g69-069
Abstract
Resistance to race W.A.-2 of net blotch has been found to be conditioned by a single gene, designated Pta, in each of the three varieties originating from Manchuria: Manchuria (C.I. 2330), Ming (C.I. 4797) and Tifang (C.I. 4407-1). Resistance to the same race, exhibited by each of two varieties of Ethiopian origin (C.I. 5791 and C.I. 9819), has been found to be conditioned by duplicate genes, one of which is allelic to Pta. The relationship of the second gene has not been determined. It was concluded that Pta, differs from the three genes, viz. Pt1, Pt2, and Pt3, previously identified in California, and was shown to segregate independently of the two-row characteristic.Differences were noted in the dominance relationships of gene Pta contributed by the Manchurian varieties. This indicates differences in the genetic background of the sources of resistance from this area which would likely detract from their value as parents in any Western Australian breeding program.Keywords
This publication has 1 reference indexed in Scilit:
- Two Additional Factors for Host Resistance to Net Blotch in Barley1Agronomy Journal, 1958