Structuring of the ginger (Zingiber officinale Roscoe.) cultivation system in Côte d'Ivoire and assessment of the morphological variability of rhizomes

The great diversity of agroecological factors that cover the yam production area in Côte d’Ivoire can be a source of morphological variability within Scutellonema bradys species, responsible for yam dry rot. This study aims at identifying the morphological group(s) of S. bradys which infect(s) yam Dioscorea cayenensis-rotundata. Two hundred ten yam tubers for sale in food markets in the Autonomous District of Abidjan were sampled from traders. After extraction and identification, a morphological characterization was carried out on S. bradys populations using morphological descriptors. Yam tubers sampled from food markets came from three agroecological zones namely dry tropical savannah, semi-deciduous dense forest and transitional forest areas. Morphometric variables and ratios used individually did not help identify morphological groups. Principal component analysis, however, performed with the most discriminating variables and ratios revealed three morphological groups named "large", "medium" and "small" in males and females and confirmed by the agglomerative hierarchical clustering. Each group consisted of a rate greater than 48% of individuals from a given agroecological zone. Three morphological groups of S. bradys are associated with yam dry rot in Côte d’Ivoire. Pathogenic and molecular characterization of the morphological groups would be necessary with a view to researching control methods.

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Etude De La Qualité Agronomique Et Biochimique De Quelques Variétés De Niébé (Vigna Unguiculata (L) Walp (Fabaceae) Provenant De La Côte d’Ivoire

European Scientific Journal ESJ ◽

10.19044/esj.2016.v12n24p362 ◽

2016 ◽

Vol 12 (24) ◽

pp. 362 ◽

Cited By ~ 1

Author(s):

Boyé Mambe Auguste Denise ◽

Yapo Sopie Edwige Salomé ◽

Koffi N’dodo Boni Clovis ◽

Kouassi N’dri Jacob ◽

Tonessia Dolou Charlotte ◽

...

Keyword(s):

Cote D'ivoire ◽

Physicochemical Parameters ◽

Côte D’Ivoire ◽

Biochemical Characterization ◽

Morphological Variability ◽

Physicochemical Characteristics ◽

Cote D’Ivoire ◽

Cowpea Cultivars ◽

Côte D'ivoire ◽

Total Carbohydrates

Cowpea is a legume consumed in Côte d'Ivoire. There are many cultivars whose seeds are widely available. This study aimed to determine some agronomic and physicochemical characteristics of some cowpea cultivars in order to identify differences and if possible select the best for appropriate uses. The study included 16 cultivars; the agro-morphological variability was assessed on the basis of eight parameters. The results showed that the accessions N21DR, N18ZR, N10BBrp produced more seeds in a relatively short growing cycle. For the biochemical characterization, parameters such as moisture, ash, protein, fat, total carbohydrates and energy value were determined by conventional methods. Differences were observed between the physicochemical parameters of the analyzed cultivars seeds. The cultivar (N19ZBoBp) recorded the highest protein content.

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