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positive seedling

Catalogue: GRDC Final Reports
A reliable, accurate and sensitive RT-PCR test for detecting Wheat streak mosaic virus (WSMV) in bulk samples of wheat seed was successfully developed, validated in blind studies and made available to the agricultural industry through AGWEST Plant laboratories for use in testing seed stocks... The three main ways to combat WSMV are to 1) destroy the green bridge before sowing to prevent transmission of the virus by the WCM, 2) use wheat seed stocks that have either none or only low levels of the virus, and 3) to sow crops late when temperature conditions are non-conducive for WCM... In an early seed transmission experiment, WSMV was detected by RT-PCR in seedlings nine days after sowing and the number of positive seedlings increased considerably over the following six weeks until almost all batches tested positive...
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