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Tobacco photoperiod

Jerry D. Cohen jdcohen at WAM.UMD.EDU
Thu Apr 11 10:32:17 EST 1996

A useful reference re: questions like this is "Nicotiana Procedures for 
experimental use"  USDA technical Bulletin Number 1586 R.D Durbin, ed.  
1979 124 pp.  Table 4.1 of this bulletin is relative to photoperiod.  I 
note that the commonly used mammoth type is SD.  Jerry Cohen

On 11 Apr 1996, Diana Horvath wrote:

> Thanks to all who replied to my question about tobacco flowering
> conditions. The general answer is that most N. tabacum varieties
> are day neutral.  Exceptions which are either LD or SD exist.
> Anyone interested in more detail and the references I received
> please e-mail.
> Diana Horvath

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