IMPROVEMENT OF TROPICAL PRODUCTION OF BEANS AND COWPEAS THROUGH DISEASE AND INSECT CONTROL (9/6-9/7/79)

THIS EVALUATION COVERS THE PERIOD 6/30/78 TO 9/30/79. GERMPLASM SOURCES FOR RESISTANCE TO LEAFHOPPERS (EMPOASCA SPP) AND LEAFMINERS(LIRIOMYZA SATIVAE) WERE IDENTIFIED. EXCELLENT PROGRESS WAS MADE IN THE RECURENT SELECTION POPULATION (RSP) BREEDING PROGRAM FOR RUST RESISTANCE (UROMYCES APPENDICULATUS). FOUR SELECTIONS WERE SUBMITTED TO USDA/UPR FOR JOINT RELEASE. IN ADDITION, SEEDS OF 38 SEGREGATING LINES WERE BULKED AND MADE AVAILABLE TO LDC"S. IN THE PHASEOLUS VULGARIS X PHASEOLUS COCCINEUS CROSSING PROGRAM, SEGREGANTS RESISTANT TO XANTHOMONAS PHASEOLI AND BEAN COMMON MOSAIC VIRUS WERE IDENTIFIED. YIELD NURSERIES WERE SENT TO A NUMBER OF CENTRAL AND SOUTH AMERICAN COUNTRIES DURING 1978-79. COLLABORATION CONTINUED WITH THE UNIVERSITY OF FLORIDA, MICHIGAN STATE UNIVERSITY, WASHINGTON STATE UNIVERSITY, AND UNIVERSITY OF WISCONSIN. A TWO-YEAR EXTENSION OF THIS PROJECT (10/01/78 - 9/30/80) WAS APPROVED BY RAC. DS/AGR RECOMMENDED ONLY A TWO-YEAR EXTENSION IN VIEW OF THE BEAN/COWPEA CRSP ACTIVITY BEING PLANNED.