4 INTERSPECIFIC GERMPLASM LINES (302-1, 302-3, 302-5, 302-20) OF SPRING WHEAT WITH RESISTANCE TO COMMON ROOT-ROT (COCHLIOBOLUS-SATIVUS) DERIVED FROM AEGILOPS OVATA

Germplasm resistant to common root rot was developed from crossing Aeg ilops ovata with Triticum aestivum, using Chinese Spring ph Ib genetic stock and the cultivar Leader. The germplasm lines had yellow flour p igment and a longer mixing time and lower SDS sedimentation volume, fa lling number, and mixograph peak height than Leader. Yet, for most agr onomic and quality traits, the germplasm was similar to that of Leader and Neepawa. Seed was classed as CWRS. This germplasm represents a di fferent source of genes for resistance to common root rot than current ly available in red spring wheat cultivars or breeding lines.