Inbred line W605S (S6 = AR17026:N1019-65008-2-3-2-1-1) was developed from a breeding population provided by the USDA Germplasm Enhancement of Maize (GEM) project. In 1996, the UW silage breeding program initiated inbred development from this breeding population. W605S was selected for nutritional composition on both an inbred per se and hybrid topcross basis during six generations of inbreeding. W605S combines well with inbreds from the Stiff Stalk heterotic group. W605S is characterized by high forage yield in hybrid combination, above-average IVD, above-average NDFD, and high milk/acre.
In the 2004, hybrids involving W605S were evaluated in trial GEMADV and also in the 2004 UW Corn Performance Trials conducted by the UW Corn Extension program. In the latter case, hybrids were designated:
- EX01 = W605S X LH244
- EX02 = W605S X LH198
In the 2005, hybrids involving W605S were included as checks in a number of other silage trials, and EX01 appeared in the 2005 UW Corn Performance Trials conducted by the UW Corn Extension program.
In the 2006, hybrids involving W605S were included in NEWINB and also as checks in a number of other silage trials. The following hybrids appeared in the 2006 UW Corn Performance Trials conducted by the UW Corn Extension program.
- EX27 = W605S X LH244
- EX35 = W604S X LH332
For more information about procedures used to develop W605S see Nass, L.L., and J.G. Coors. 2003. Potential of exotic x adapted maize germplasm for silage. Maydica 48:197-206.