METHOD: Reproductive Efficiency CONDITIONS: Green House - 24C METHOD NARR: Two experiments were done. The first (GH) test determined reproductive efficiency through egg counts. When rooted cuttings were transplanted to pots, an000 M. chitwoodi eggs was pipetted into the soil. Plants were allowed to grow for 55 days before harvest. A reproductive efficiency value was determined using egg counts. The second (in vitro) test determined the host suitugh egg counts. See separate entry. AUTHOR EXPLANATION: There was sufficient correspondence between screening methods for Race 1 to promote the use of in vitro screening to identify resistance in a breeding program. The lac detracts from this view. As a result, determination of R factors by egg counts was the only criterion usable for host response.