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Journal Article 1990

Autor: Piergiovanni, A.R. Della Gatta, C.D. Ng, N.Q. Singh, B.B. Singh, S.R. Perrino, P.

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 ...

Enlace original: https://cgspace.cgiar.org/handle/10568/101822

Investigación en Agricultura
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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
Conference Paper 1990

Autor: Piergiovanni, A.R. Della Gatta, C.D. Singh, B.B. Singh, S.R. Ng, N.Q. Perrino, P.

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...

Enlace original: https://cgspace.cgiar.org/handle/10568/101821

Investigación en Agricultura
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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
Conference Paper 1990

Autor: Marconi, E. Lomardi-Boccia, G. Carnovale, E. Ng, N.Q.

Data are given on seed characteristics and nutritive value for 6 accessions of 4 wild Vigna taxa (V. vexillata, V. oblongifolia, V. gracilis and V. unguiculata subsp. dekindtiana) and 27 cultivated V. unguiculata varieties. The 100-seed weight ranged from 2 to 6 g among wild and from 6 to 24 g in...

Enlace original: https://cgspace.cgiar.org/handle/10568/101834

Investigación en Agricultura
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Marconi, E. ,  Lomardi-Boccia, G. ,  Carnovale, E. ,  Ng, N.Q. ,  [Nutritional evaluation of wild and cultivated species of cowpea] ,  Nutritional evaluation of wild and cultivated species of cowpea
Journal Article 2008

Autor: Ogunkanmi, L.A. Ogundipe, O.T. Ng, N.Q. Fatokun, C.A.

The genetic diversity in wild cowpea was assessed using cowpea derived simple sequence repeat (SSR) markers. A total of forty eight wild cowpea lines collected from diverse geographical locations in Africa were used for the study. Twelve SSR markers were selected for amplification of DNA of the t...

Enlace original: https://cgspace.cgiar.org/handle/10568/90821

Investigación en Agricultura
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Ogunkanmi, L.A. ,  Ogundipe, O.T. ,  Ng, N.Q. ,  Fatokun, C.A. ,  [Genetic diversity in wild relatives of cowpea (Vigna unguiculata) as revealed by simple sequence repeats (SSR) markers] ,  Genetic diversity in wild relatives of cowpea (Vigna unguiculata) as revealed by simple sequence repeats (SSR) markers
Journal Article 1992

Autor: Barone, A. Giudice, A. del Ng, N.Q.

Interspecific hybridization between Vigna unguiculata and V. vexillata always failed: no seed was obtained in both crossing directions. Two different barriers to crossability were found: a pre-zygotic barrier and a post-zygotic one. Many abnormalities were observed in pollen-tube development, whi...

Enlace original: https://cgspace.cgiar.org/handle/10568/99890

Investigación en Agricultura
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Barone, A. ,  Giudice, A. del ,  Ng, N.Q. ,  [Barriers to interspecific hybridization between Vigna unguiculata and Vigna vexillata] ,  Barriers to interspecific hybridization between Vigna unguiculata and Vigna vexillata
Journal Article 1998

Autor: Mignouna, H.D. Ng, N.Q. Ikea, J. Thottappilly, G.

Knowledge of the genetic relationships and variability among cultivated germplasm is important for facilitating the transfer of useful genes and maximizing the use of available germplasm resources. In this study, random amplified polymorphic DNA (RAPD) markers were used to assess genetic diversit...

Enlace original: https://cgspace.cgiar.org/handle/10568/100981

Investigación en Agricultura
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Mignouna, H.D. ,  Ng, N.Q. ,  Ikea, J. ,  Thottappilly, G. ,  [Genetic diversity in cowpea as revealed by random amplified polymorphic DNA] ,  Genetic diversity in cowpea as revealed by random amplified polymorphic DNA
Conference Paper 1990

Autor: Barone, A. Ng, N.Q.

Early embryogenesis up to 8 days after pollination was characterized in V. unguiculata. When crosses were performed between V. unguiculata and wild V. vexillata, seeds were not obtained due to crossability barriers. In most cases pollen tube growth was arrested in the stigmatic tissue. In the 15-...

Enlace original: https://cgspace.cgiar.org/handle/10568/101858

Investigación en Agricultura
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Barone, A. ,  Ng, N.Q. ,  [Embryological study of crosses between Vigna unguiculata and V. vexillata] ,  Embryological study of crosses between Vigna unguiculata and V. vexillata
Book Chapter 1990

Autor: Ng, N.Q.

The history of the Genetic Resources Unit at the International Institute of Tropical Agriculture (IITA) was highlighted. By 1980, the unit engaged in characterization and evaluation of germplasm information. In order to strengthen the units activity and provide a better knowledge of Vigna, the go...

Enlace original: https://cgspace.cgiar.org/handle/10568/101882

Investigación en Agricultura
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Ng, N.Q. ,  [Recents developments in cowpea germplasm collection, conservation, evaluation and research at the Genetic Resources Unit] ,  Recents developments in cowpea germplasm collection, conservation, evaluation and research at the Genetic Resources Unit

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