Durability of resistance to stripe rust in the wheat cultivar Claire in New Zealand

Authors

  • S.F. Chng
  • M.G. Cromey
  • S.C. Shorter

DOI:

https://doi.org/10.30843/nzpp.2011.64.5975

Abstract

Host resistance is the most economical way to manage wheat stripe rust caused by Puccinia striiformis f sp tritici The cultivar Claire was released in 1999 and until recently remained highly resistant to the disease in the United Kingdom While Claire was considered durably resistant to stripe rust in New Zealand it is now categorised as moderately susceptible The present study investigated whether racespecific resistance was responsible for this breakdown in resistance and whether cv Claire retains useful durable resistance A rust culture from cv Claire was compared with a pre2005 culture on a set of differential cultivars The seedling resistance in cv Claire was racespecific Greenhouse and field experiments suggest that the adult plant resistance in cv Claire has been reduced in the presence of a more virulent stripe rust population Remaining adult plant resistance is insufficient to provide adequate control of stripe rust in New Zealand wheat crops

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Published

2011-01-08

How to Cite

Chng, S., Cromey, M., & Shorter, S. (2011). Durability of resistance to stripe rust in the wheat cultivar Claire in New Zealand. New Zealand Plant Protection, 64, 17-24. https://doi.org/10.30843/nzpp.2011.64.5975

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