Sweet potato germplasm evaluation in the Philippines in 1991-1992
1992
Gerpacio, Ma.T.L. | Chujoy, E. (International Potato Center, P.O. Box 933, Manila (Philippines))
Sweet potato clones and open pollinated progenies were evaluated at Batac, Ilocos Norte [Philippines] (5 m asl) for root yield, earliness, root dry matter content and shade tolerance. Early high yielding clones from a trial including 51 clones were NC234 and 440067 (IIIA-TIS 3290) at 90 DAP. Seven clones had yields of more than 400 g/plant at 120 DAP and included 440067 (IITA-TIS 3290), 440001 (Resisto), VSP-5 (local check), 440087 (NC2395) CL 946-25, 440059 (IITA-TIS 1487) and 440092 (NCl525). In a study of shade tolerance, BPI-SP2, a local clone, had the highest yield at 90 DAP with 238 g/plant. Twelve other clones, namely, B002, L089, L002, B024, N052, N044, B005, NC2625, B012, M014, PNG-135 and NCN 35 had more than 100 g/plant yield. Among 32 open pollinated and hybrid progenies evaluated, 490041 (TIS-9101 OP) had the highest yield at 120 DAP with 558 g/plant. L036 OP, 490080 (Lanhan OP), N020 OP and 490045 (TIS-821 0405 OP) yielded more than 400 g/plant at 120 DAP. Among introduced clones, seven sweet potato clones had high dry matter content (DM35%) at 120 DAP and included 440092 (NC1525), PNG-318, 420025 (Camote Yuca) B019 (Chin Mi), B009 (Nuong N-13), 420028 (unknown), NC1508, and NC1135. Sweet potato clones with high dry matter content under shade were L089, N044, M014, N020, Waveto, D-3, L066, L098, and DC-6 with more than 30% dry matter while among the progenies, 490041 (TIS-9101 OP) L036 OP, 490080 (Lanhan OP), N020 OP, N044 OP, 490028 (TIS-9265 OP), L081 OP, L033 OP, Kinabakab OP, 490087 (Lafalafa OP), CL-946-25, Cn 1306 OP, and L032 OP had high dry matter content
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