[MPWG] Environment vs. Genetics

[Colin Donohue]

Like I said, I've been out of this arena for a few years (guess it's 
about 2005 now, lol)

Looks like research is suggesting a correlation between genetics and 
chemical activity.

The relationship between genetic and chemotypic diversity in American
ginseng (Panax quinquefolius L.)
Erin M. Schlag 1, Marla S. McIntosh ?
Department of Plant Science and Landscape Architecture, University of 
Maryland, 2102 Plant Sciences Building #36, College Park, MD 20742, 
United State

/The close correspondence between chemotype and genetic cluster provides 
the first DNA-based evidence for the genetic basis of ginsenoside 
composition/

Ginsenoside content and variation among and within American
ginseng (Panax quinquefolius L.) populations
Erin M. Schlag, Marla S. McIntosh *
Department of Natural Resource Sciences and Landscape Architecture, 
University of Maryland,
2102 Plant Sciences Building #36, College Park, MD 20742, United States
Received 7 March 2006; received in revised form 21 April 2006

/Chemotype did not vary by production type (wild versus cultivated) and 
roots within a population rarely exhibited chemotypes different from the 
overall population chemotype. These results provide support for recent 
evidence that relative Rg1 to Re ginsenoside contents in American 
ginseng roots vary by region and that these differences are likely 
influenced more by genotype than environmental factors/

A great argument for growers to use local seed.

Curious how the longer growing time of wild relates to ginsenocides (I 
thought some occurred only after 5 years, while industrially grown roots 
are grown shorter times than wild sim or wild) but regardless, it's a 
good excuse to encourage growers and push FWS to work on sustainable 
seed supply.

C





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