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Please use this identifier to cite or link to this item: http://hdl.handle.net/1807/20922


Title: Yield stability in relation to Striga resistance in cowpea production in West and Central Africa
Issue Date: 31-Dec-1996
Publisher: African Crop Science Society
Citation: African Crop Science Journal (ISSN: 1021-9730) Vol 4 Num 1
Abstract: African Crop Science Journal,Vol. 4. No.l, pp. 29-40, 1996 Yield stability in relation to Striga resistance in cowpea production in West and Central Africa N. MULEBA, J.T. OUEDRAOGO and I. DRABO (Received 21 November, 1994; accepted 20 March, 1995) Code Number: CS96037 Sizes of Files: Text: 47K No associated graphics files ABSTRACT Striga gesnerioides causes severe cowpea ( Vigna unguiculata ) yield losses in West and Central Africa. Fields have been abandoned by farmers due to crop failures attributed to Striga-infestations. Studies comprising three sowing dates and two regional cultivar adaptation trials were conducted in fields naturally infested by Striga. The sowing date experiments were established in the Sudan savanna zone in Burkina Faso from 1984 to 1987. Three dates, namely, early (late-June to early-July), intermediate (mid- to late-July), and late (early- to mid-August) were used. The first regional adaptation trial included some countries in West Africa in 1989 and 1990. The second trial was extended to Central Africa in 1991 and 1992. The objectives were to study Striga- resistance of genotypes, its stability (or durability) both in time and space and to devise production technologies for minimising yield losses under Striga - infestations. Cultivar Suvita-2 had high and stable resistance to Striga-infestation and a high yield that was least stable across years. Regionally, no single cultivar was immune from Striga-infestations across locations. Only B301, in contrast to two other resistant controls IT82D-849 and Suvita-2, combined high stable resistance to Striga-infestation and high stable yield under Striga-infestations across locations in West and Central Africa. Other cultivars that combined high or moderate resistance to Striga infestation and high yield, and moderate to high stability across locations included TN93-80 and TNI21-80, in West Africa, and KVx402-19-1 in West and Central Africa. Although no genotype was invulnerable to Striga-infestation in all locations of the sub-region, it appears that Striga damage could be controlled through proper choice of sowing dates and better adapted, high yielding and Striga resistant cultivars. Key Words: Striga gesnerioides, tolerance, Vigna unguiculata Copyright 1996 The African Crop Science Society
URI: http://hdl.handle.net/1807/20922
Other Identifiers: http://www.bioline.org.br/abstract?id=cs96037
Rights: Copyright 1996 African Crop Science Society
Appears in Collections:Bioline International Legacy Collection

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