Evaluation of seedling and adult plant resistance to <Emphasis Type="Italic">Puccinia hordei</Emphasis> in barley |
| |
| Authors: | Prashant G Golegaonkar Davinder Singh Robert F Park |
| |
| Institution: | (1) Plant Breeding Institute, The University of Sydney, Private Mail Bag 11, Camden, NSW, 2570, Australia;(2) Present address: Monsanto India Ltd, #44/2A, 2nd Floor, Vasant’s Business Park, Bellary Rd., NH-7, Hebbal, Bangalore, 560092, India |
| |
| Abstract: | The responses of 92 barley genotypes to selected Puccinia hordei pathotypes were assessed in greenhouse tests at seedling growth stages and in the field at adult plant growth stages to identify
known and/or unknown resistances. On the basis of multipathotype tests, 35 genotypes were postulated to carry Rph1, Rph2, Rph4, Rph5, Rph12, RphCantala, alone or in combination (Rph2 + Rph4 and Rph1 + Rph2), whereas 52 genotypes lacked seedling resistance to P. hordei to the pathotypes used. Five genotypes carried seedling resistance that was effective to all pathotypes, of which four were
believed to carry uncharacterised resistance based on pedigree information. Field tests at adult plant growth stages indicated
that while 28 genotypes were susceptible, 57 carried uncharacterised APR to P. hordei. Pedigree analysis indicated that APR in the test genotypes could have been derived from three different sources. The resistant
responses of seven cultivars at adult plant growth stages were believed to be due to the presence of seedling resistance effective
against the field pathotypes. |
| |
| Keywords: | Barley leaf rust Gene postulation Hordeum vulgare |
| 本文献已被 SpringerLink 等数据库收录！ |
|
