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Stephens PDF Print E-mail
Monday, 03 August 2009 10:37

(Triticum  aestiwtm  L.,  em.  Thell.) The  moderate  level  of  tolerance  to  eyespot  caused  by  Cercosporella  herpotrichoides  From and  the  relatively  early  maturity of  Stephens,  tested  as  OR  65-116~70-MBW-2, are  advantages  in the  300 mm  or  less  rainfall  areas  where  early  fall  seeding  and drought  avoidance  are  desired.  Conversely,  Stephens  has  superior yield  potential  under  high  rainfall  or  irrigated  conditions,  as evidenced  by  its  overall  high  and  stable  average  yield  performance  in  the  Western  Regional  Soft  White Winter  Wheat Nursery. Stephens  has  mature  plant  resistance  to  prevalent  races  of stripe  rust  (Puccinia  striiformis  West)  and  is  resistant  to  prevalent  races  of  leaf  rust  (Puccinia  rubigo-vera  (De,)  Wint.  F.  sp.tritici  (Eriks.)  Carl.).  It  is  moderately  resistant  to  powdery mildew  (Erysiphe  graminis  De.  F.  sp.  tritici  Em. Marchal)  and carries  the  Bt4  or  Bt6  gene  for  resistance  to  common  bunt  (Tilletia  foetida  (Walls.)  Lifo  or  T.  caries  (De.)  Tul.).
Stephens  is  medium  in  height  with  a  strong,  white  stem.The  spike  is  awned,  fusiform,  middense,  and  inclined  with labrous,  white,  midlong  glumes.  The  shoulders  are  narrow, blique,  with  beaks  narrow,  accuminate,  and  2  to  3  mm  long. The  awns  are  flared,  white,  and  2  to  7  cm long.  Kernels  are relatively  large,  white,  soft,  and  ovate  with  small  to  midsize erm  and  midwide  crease,  which  is  middeep.
  CI 17596  is soft  white  winter  wheat developed  by  the  Oregon  Agric.  Exp. Stn.  in  cooperation  with  SEA, USDA,  from  a  cross  between  ’NordDesprez’  and  Pullman  Selection  101  (CI  13438)  made  in  1965.
65 bu/a


Go to Tables of wheat varietes


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Last Updated on Thursday, 01 October 2009 13:33

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