Why do photoperiod-sensitivity and long crop duration penalize panicle sink size and therefore yield potential in tropical sorghum ?

Clerget Benoît, Dingkuhn Michaël. 2010. Why do photoperiod-sensitivity and long crop duration penalize panicle sink size and therefore yield potential in tropical sorghum ?. In : Proceedings of Agro 2010 : the XIth ESA Congress, August 29th - September 3rd, 2010, Montpellier, France. Wery Jacques (ed.), Shili-Touzi I. (ed.), Perrin A. (ed.). Montpellier : Agropolis international, 555-556. ISBN 978-2-909613-01-7 ESA Congress. 11, Montpellier, France, 29 Août 2010/3 Septembre 2010.

Résumé : In temperate varieties of maize or sorghum, lateness conveys high yield potential. By contrast, late maturing tropical sorghum varieties (>150 days grain to grain) do not yield more grain than early ones maturing in 90 days. Variation in crop duration is needed in Africa to adapt to the duration of the rainy season that varies with location (Curtis, 1968). Studies in Mali (Clerget et al., 2008) indicated that phenology is the key to understand this phenomenon. This paper provides further evidence.

Mots-clés Agrovoc : Sorghum

Mots-clés géographiques Agrovoc : Mali

Classification Agris : F62 - Physiologie végétale - Croissance et développement

Auteurs et affiliations

• Clerget Benoît, CIRAD-BIOS-UPR AIVA (PHL)
• Dingkuhn Michaël, CIRAD-BIOS-UPR AIVA (FRA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/557369/)

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