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Brief mention of research into the infestation of cowpeas by Striga gesnerioides conducted by staff of the Botany Department of the University of Nigeria at Nsukka is followed by more extensive discussion of work on this host-parasite relationship conducted at the Institute of Agricultural Resear...


Emechebe, A.M.Singh, B.B.Leleji, O.I.Atokple, I.D.KAdu, J.K.[Cowpea striga problems and research in Nigeria]Cowpea striga problems and research in Nigeria

Fatty acid composition of extracted oils from 58 lines of cowpea (Vigna unguicuiata (L) Walp) was investigated by gas‐liquid chromatography (GLC). Considerable variability was observed in the fatty acid profile, though palmitic (16:0), linoleic (18:2) and linolenic (18:3) acids were the dominant ...


Piergiovanni, A.R.Della Gatta, C.D.Ng, N.Q.Singh, B.B.Singh, S.R.Perrino, P.[Fatty acid composition and insect resistance in Vigna unguiculata seeds]Fatty acid composition and insect resistance in Vigna unguiculata seeds

Trypsin inhibitor content was determined in the seeds of 21 cowpea (Vigna unguiculata) lines (10 known to be resistant to Callosobruchus maculatus and 11 susceptible) whilst fatty acid composition was determined in 58 lines (11 resistant and 47 susceptible). A wide range in trypsin inhibitor cont...


Piergiovanni, A.R.Della Gatta, C.D.Singh, B.B.Singh, S.R.Ng, N.Q.Perrino, P.[Biochemical seed analysis in relation to bruchid resistance]Biochemical seed analysis in relation to bruchid resistance

Phenolic compounds were analysed in leaf samples from 9 lines known to be resistant or susceptible to aphids (mainly Aphis craccivora but also, to a lesser extent, A. fabae). Resistant lines TVu3000, IT84E and IT83S742 had higher flavonoid glycoside contents than the susceptible lines VITA7, TVu3...


Lattanzio, V.Linsalata, V.Maruca, G.Marullo, R.Singh, B.B.Singh, S.R.Perrino, P.[Preexisting phenols and resistance to aphid in cowpea (Vigna unguiculata [L.] Walp.)]Preexisting phenols and resistance to aphid in cowpea (Vigna unguiculata [L.] Walp.)

Aphid (Aphis craccivora Koch) is a major pest of cowpea [Vigna unguiculata (L.) Walp.] particularly in the drier regions of the tropics. It causes direct damage by feeding on the plants and also transmits viruses. Several sources of resistance to cowpea aphid have been identified and efforts are ...


Bata, H.D.Singh, B.B.Singh, S.R.Ladeinde, T.A.O.[Inheritance of resistance to aphid in cowpea]Inheritance of resistance to aphid in cowpea

Dahab Elgoz'cowpea fVigna unguiculata (L.) Walp.] (Reg. no. CV-208, PI 632419. originally designated as 1T84S-2163) was developed by the International Institute of 'I'ropical Agriculture (ll'I'A) and distributed to various national programs in 1988 for testing and selection of suitable cultivars ...


Elawad, H.O.A.Singh, B.B.[Registration of Dahab Elgoz cowpea]Registration of Dahab Elgoz cowpea

Cowpea, Vigna unguiculata (L.) Walp., is an important grain legume grown in tropical and subtropical regions, primarily Africa. The parasitic weed Striga gesnerioides (Willd.) Vatke is one of the most important constraints to cowpea production. Host plant resistance is the only practical control ...


Boukar, O.Kong, L.Singh, B.B.Murdock, L.Ohm, H.W.[AFLP and AFLPderived SCAR markers associated with Striga gesnerioides resistance in cowpea]AFLP and AFLPderived SCAR markers associated with Striga gesnerioides resistance in cowpea

Cowpea (Vigna unguiculata) has relatively higher drought tolerance than other legume crops. It is widely grown in semi-arid regions, particularly in West Africa. One objective of the present study was to determine the effects of soil moisture stress on the length, dry matter and distribution of t...


Matsui, T.Singh, B.B.[Root characteristics in cowpea related to drought tolerance in seedlings]Root characteristics in cowpea related to drought tolerance in seedlings

A simple screening method was developed that accurately discriminates between drought and susceptible cowpea(Vigna unguiculata(L) walp). Wooden boxes (130 cm length. 65cm width. 15cm depth) made of 2.5cm thick planks were lined with polythene sheets, filled with a 12cm layer of soil and sand mixt...


Singh, B.B.Mai-Kodomi, Y.Terao, T.[A simple screening method for drought tolerance in cowpea]A simple screening method for drought tolerance in cowpea

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