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Sweetpotato foundation seed tested in commercial operations
Date:7/1/2011

oduction fields 1or 2 years following the year of foundation seed production). "Although yields of plants grown from G2 and G3 seed were 86.3% and 86.1% for U.S. No. 1 and 83.3% and 86.0% for total marketable, respectively, compared with the yields from G1 seed, they were not significantly different", the scientists reported. Yield and virus incidence data suggested that seed quality may vary from year to year and from location to location.

Clark said that study results suggest that producers are indeed realizing yield benefits by incorporating virus-tested foundation seed into their production schemes. "It is also evident from the data that there is a decline in performance once this seed is increased on commercial farms in close proximity to older, infected propagating material. If the rate of virus re-infection on farms could be reduced, it appears that further improvements in yield could be realized", he added.

The scientists recommended that future studies should investigate methods that have proven useful on other crops, such as border crops, and the use of stylet oil sprays to reduce virus transmission. Additionally, clean seed programs should be augmented with enhanced virus resistance, tolerance, or both.


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Contact: Michael W. Neff
mwneff@ashs.org
703-836-4606
American Society for Horticultural Science
Source:Eurekalert  

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