Sources of resistance to major insect-borne viral diseases of cowpea (Vigna unguiculata)
1997
Dela Cueva, F.M. | Adalla, C.B. (Philippines Univ. Los Banos, College, Laguna (Philippines). Inst. of Plant Breeding)
Field and greenhouse evaluations of germplasm collection, breeding lines, and traditional varieties were done to identify sources of resistance to four major insect-borne viral diseases of cowpea namely: cowpea little leaf, cowpea mosaic, cowpea aphid-borne mosaic. Thirty one and 90 entries out of 599 cowpea lines/accessions screened against cowpea little leaf exhibited resistance and moderate resistance, respectively. Of the 420 entries evaluated for resistance to cowpea mosaic, 7 symptomless and 10 moderately resistant entries were selected. Thirty-seven out ot 146 entries of cowpea exhibited resistance to cowpea aphid-borne mosaic. Eight out of 20 entries screened for resistance to pole sitao mosaic virus remained symptomless until harvest
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