Article: Resistance of Sugarcane Cultivar R 570 to Puccinia melanocephala Isolatesfrom Different Geographic Locations.
2019 Volume 85, Issue 3, Page(s) 282–286
Abstract: ... rust resistance gene of sugarcane cultivar R 570 against isolates of Puccinia melanocephala ... from different geographic locations. Cultivar R 570 exhibited severe rust symptoms when in vitro plantlets were ... when detached leaves were inoculated with the pathogen. This latter technique was then used to inoculate R 570 ...
Abstract | Two different inoculation techniques were investigated before studying the reaction of the major rust resistance gene of sugarcane cultivar R 570 against isolates of Puccinia melanocephala from different geographic locations. Cultivar R 570 exhibited severe rust symptoms when in vitro plantlets were inoculated with a rust isolate from Réunion Island, but a good correlation with field resistance was observed when detached leaves were inoculated with the pathogen. This latter technique was then used to inoculate R 570 and a sample of its self progeny with rust isolates from Brazil, Colombia, Florida (three isolates), Guadeloupe, Réunion Island, and Zimbabwe. R 570 was resistant to all isolates of P. melanocephala, and the segregation of resistance in the progeny did not change with the isolates, suggesting that a single gene, or a single chromosomic region, was involved in the resistance against all tested isolates. This major resistance gene has, therefore, potential value to improve resistance to rust in various geographic regions. |
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Language | English |
Publishing date | 2019-03-04 |
Publishing country | United States |
Document type | Journal Article |
ZDB-ID | 754182-x |
ISSN | 0191-2917 |
ISSN | 0191-2917 |
DOI | 10.1094/PDIS.2001.85.3.282 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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