Qualitative genes which control detection of a specific pathogen genotype in a gene-for-gene relationship are much less likely to be durable than those that enhance downstream defences.
Until it is isolated, however, or unless an isolate virulent to Stb16q is discovered, it will not be possible to tell whether it controls a gene-for-gene resistance which is effective against the current pathogen population, or is part of the plant's downstream defences and therefore may be durable.
May 27 , 20141.42pm BST Just in - a surge in demand for defence hardware has driven demand for durable goods across America last month.
This unspecific resistance, also observed in our study at 25°C, is a very efficient defence and a potential source of durable resistance (Qayoum and Line 1985; Milus and Line 1986).
Savic's arrival reveals Roberto Mancini's belief that his defence needs strengthening if it is to prove durable enough to challenge for top honours next term after breaking a 35-year trophy drought by landing the FA Cup last season.
The application said he had "invented new and useful Improvements in Fire-Arms," and went on to describe "a simple, compact, durable, and efficient firearm for war purposes, to be used either in attack or defence".
Brezhnev's main achievements, according to Valenta and Cibulka, was his foreign and defence policies, however, with the economy in decline these achievements were not durable in the long-run.
An in-depth understanding of the mechanisms by which R genes and downstream defence mechanisms function in Musa is necessary for development of novel strategies for durable resistance.
Robert Gates, the American secretary of defence, flew to Iraqi Kurdistan to talk to Mr Barzani after the poll.In sum, a durable settlement between Iraq's Arabs and Kurds looks no closer.
The fifth title defence extended Cleverly's unbeaten record to 26 fights, but the performance lacked dynamism against a durable yet limited opponent.
