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Idaho 587 PDF Print E-mail
Monday, 03 August 2009 10:38
‘Idaho 587’ (Reg. no. CV-990, PI 634567), soft white winter wheat (Triticum aestivum L.), was developed by the Idaho Agricultural Experiment Station for use by grain producers in the Pacific Northwest and released in July 2003. Idaho 587 is a backcross derivative of the soft white winter wheat cultivar Stephens with genetic tolerance to the imidazolinone class of herbicides developed by the BASF Corporation for use in controlling grassy weeds of wheat and generically given the name ‘Clearfield’.
Idaho 587 was derived from the third backcross of Stephens (Kronstad et al., 1978) to the imidazolinone-resistant line ‘FS4’ (synonym cv. 9804), with the backcross having the pedigree Stephens*4/FS4. Stephens was developed by Oregon State University as a publicly available cultivar and has been a dominant cultivar in the Pacific Northwest for over 20 yr due to its yield potential and durable resistance to stripe rust [caused by Puccinia striiformis (Westend.)]. The imidazolinone resistance in FS4 was derived through mutagenesis of the imidazolinone-susceptible cultivar Fidel, followed by selection of the mutagenized population with imidazolinone herbicides (Newhouse et al., 1992). The herbicide tolerance carried in FS4 is conditioned by an allele of the Als1 locus for acetolactate synthase with the allele designation Als1fid04. The BC3F2 seed of the cross Stephens*4/FS4 was developed by the American Cyanamid Corporation (subsequently acquired by BASF) at Texas A & M University and transferred to the University of Idaho under a material transfer agreement for utilization in selection and breeding.
6.7 Mg ha–1

Go to Tables of wheat varietes

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Last Updated on Thursday, 01 October 2009 13:33
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