Adaptation to diverse semi-arid environments of sorghum genotypes having different plant type and sensitivity to photoperiod
Climatologists, breeders and agronomists need tools to translate variable climatic conditions in semi-arid environments into probable performance, and to translate genotype characteristics into agro-ecological fit of cultivars. Although geographic adaptation of West African sorghum cultivars is largely related to local characteristics of the wet season, they require, in addition to drought tolerance, effective phenological mechanisms for temporal escape from drought and excessive humidity that would favour pests and diseases during sensitive development stages. A simulation experiment was conducted to predict the potential and attainable (water limited) growth and yield of three sorghum genotypes differing in plant type and response to photoperiod for combinations of five sowing dates and three sites on the N-S climatic gradient in Mali, for the period from 1971 to 2004. The models used were SARRA-H equipped with the phenological model Impatience. Onset and end dates of the rainy season were estimated with the simple soil water balance model BIP. The resulting scenarios were evaluated on the basis of (i) escape from drought, (ii) escape of grain development phases from periods of high pest and disease pressure and (iii) the resulting "safe" periods for sowing. The latter took into account the agronomic advantage associated with early sowing, observed by farmers to minimize weed competition and decreasing soil fertility during the wet season. The results indicated that potentially high yielding and photoperiod insensitive "modern" cultivars display an advantage only in the north where the rainy season is short. Sensitive response of flowering to photoperiod was essential for more humid environments having a long wet season, resulting in appropriate seasonal timing of flowering and greater flexibility of crop calendars. The methodology is discussed with respect to its suitability for applications in crop breeding, geographic targeting.
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Language: | eng |
Subjects: | F30 - Génétique et amélioration des plantes, F62 - Physiologie végétale - Croissance et développement, Sorghum, génotype, zone semi-aride, modèle de simulation, adaptation, résistance à la sécheresse, photopériodicité, phénologie, rendement des cultures, http://aims.fao.org/aos/agrovoc/c_7244, http://aims.fao.org/aos/agrovoc/c_3225, http://aims.fao.org/aos/agrovoc/c_6963, http://aims.fao.org/aos/agrovoc/c_24242, http://aims.fao.org/aos/agrovoc/c_117, http://aims.fao.org/aos/agrovoc/c_2392, http://aims.fao.org/aos/agrovoc/c_5809, http://aims.fao.org/aos/agrovoc/c_5774, http://aims.fao.org/aos/agrovoc/c_10176, http://aims.fao.org/aos/agrovoc/c_165, http://aims.fao.org/aos/agrovoc/c_4540, http://aims.fao.org/aos/agrovoc/c_8355, |
Online Access: | http://agritrop.cirad.fr/543216/ http://agritrop.cirad.fr/543216/1/543216.pdf |
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dig-cirad-fr-5432162024-01-28T15:38:04Z http://agritrop.cirad.fr/543216/ http://agritrop.cirad.fr/543216/ Adaptation to diverse semi-arid environments of sorghum genotypes having different plant type and sensitivity to photoperiod. Kouressy Mamoutou, Dingkuhn Michaël, Vaksmann Michel, Heinemann Alexandre. 2008. Agricultural and Forest Meteorology, 148 (3) : 357-371.https://doi.org/10.1016/j.agrformet.2007.09.009 <https://doi.org/10.1016/j.agrformet.2007.09.009> Adaptation to diverse semi-arid environments of sorghum genotypes having different plant type and sensitivity to photoperiod Kouressy, Mamoutou Dingkuhn, Michaël Vaksmann, Michel Heinemann, Alexandre eng 2008 Agricultural and Forest Meteorology F30 - Génétique et amélioration des plantes F62 - Physiologie végétale - Croissance et développement Sorghum génotype zone semi-aride modèle de simulation adaptation résistance à la sécheresse photopériodicité phénologie rendement des cultures http://aims.fao.org/aos/agrovoc/c_7244 http://aims.fao.org/aos/agrovoc/c_3225 http://aims.fao.org/aos/agrovoc/c_6963 http://aims.fao.org/aos/agrovoc/c_24242 http://aims.fao.org/aos/agrovoc/c_117 http://aims.fao.org/aos/agrovoc/c_2392 http://aims.fao.org/aos/agrovoc/c_5809 http://aims.fao.org/aos/agrovoc/c_5774 http://aims.fao.org/aos/agrovoc/c_10176 Afrique Mali Afrique occidentale http://aims.fao.org/aos/agrovoc/c_165 http://aims.fao.org/aos/agrovoc/c_4540 http://aims.fao.org/aos/agrovoc/c_8355 Climatologists, breeders and agronomists need tools to translate variable climatic conditions in semi-arid environments into probable performance, and to translate genotype characteristics into agro-ecological fit of cultivars. Although geographic adaptation of West African sorghum cultivars is largely related to local characteristics of the wet season, they require, in addition to drought tolerance, effective phenological mechanisms for temporal escape from drought and excessive humidity that would favour pests and diseases during sensitive development stages. A simulation experiment was conducted to predict the potential and attainable (water limited) growth and yield of three sorghum genotypes differing in plant type and response to photoperiod for combinations of five sowing dates and three sites on the N-S climatic gradient in Mali, for the period from 1971 to 2004. The models used were SARRA-H equipped with the phenological model Impatience. Onset and end dates of the rainy season were estimated with the simple soil water balance model BIP. The resulting scenarios were evaluated on the basis of (i) escape from drought, (ii) escape of grain development phases from periods of high pest and disease pressure and (iii) the resulting "safe" periods for sowing. The latter took into account the agronomic advantage associated with early sowing, observed by farmers to minimize weed competition and decreasing soil fertility during the wet season. The results indicated that potentially high yielding and photoperiod insensitive "modern" cultivars display an advantage only in the north where the rainy season is short. Sensitive response of flowering to photoperiod was essential for more humid environments having a long wet season, resulting in appropriate seasonal timing of flowering and greater flexibility of crop calendars. The methodology is discussed with respect to its suitability for applications in crop breeding, geographic targeting. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/543216/1/543216.pdf text Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1016/j.agrformet.2007.09.009 10.1016/j.agrformet.2007.09.009 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.agrformet.2007.09.009 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1016/j.agrformet.2007.09.009 |
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F30 - Génétique et amélioration des plantes F62 - Physiologie végétale - Croissance et développement Sorghum génotype zone semi-aride modèle de simulation adaptation résistance à la sécheresse photopériodicité phénologie rendement des cultures http://aims.fao.org/aos/agrovoc/c_7244 http://aims.fao.org/aos/agrovoc/c_3225 http://aims.fao.org/aos/agrovoc/c_6963 http://aims.fao.org/aos/agrovoc/c_24242 http://aims.fao.org/aos/agrovoc/c_117 http://aims.fao.org/aos/agrovoc/c_2392 http://aims.fao.org/aos/agrovoc/c_5809 http://aims.fao.org/aos/agrovoc/c_5774 http://aims.fao.org/aos/agrovoc/c_10176 http://aims.fao.org/aos/agrovoc/c_165 http://aims.fao.org/aos/agrovoc/c_4540 http://aims.fao.org/aos/agrovoc/c_8355 F30 - Génétique et amélioration des plantes F62 - Physiologie végétale - Croissance et développement Sorghum génotype zone semi-aride modèle de simulation adaptation résistance à la sécheresse photopériodicité phénologie rendement des cultures http://aims.fao.org/aos/agrovoc/c_7244 http://aims.fao.org/aos/agrovoc/c_3225 http://aims.fao.org/aos/agrovoc/c_6963 http://aims.fao.org/aos/agrovoc/c_24242 http://aims.fao.org/aos/agrovoc/c_117 http://aims.fao.org/aos/agrovoc/c_2392 http://aims.fao.org/aos/agrovoc/c_5809 http://aims.fao.org/aos/agrovoc/c_5774 http://aims.fao.org/aos/agrovoc/c_10176 http://aims.fao.org/aos/agrovoc/c_165 http://aims.fao.org/aos/agrovoc/c_4540 http://aims.fao.org/aos/agrovoc/c_8355 |
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F30 - Génétique et amélioration des plantes F62 - Physiologie végétale - Croissance et développement Sorghum génotype zone semi-aride modèle de simulation adaptation résistance à la sécheresse photopériodicité phénologie rendement des cultures http://aims.fao.org/aos/agrovoc/c_7244 http://aims.fao.org/aos/agrovoc/c_3225 http://aims.fao.org/aos/agrovoc/c_6963 http://aims.fao.org/aos/agrovoc/c_24242 http://aims.fao.org/aos/agrovoc/c_117 http://aims.fao.org/aos/agrovoc/c_2392 http://aims.fao.org/aos/agrovoc/c_5809 http://aims.fao.org/aos/agrovoc/c_5774 http://aims.fao.org/aos/agrovoc/c_10176 http://aims.fao.org/aos/agrovoc/c_165 http://aims.fao.org/aos/agrovoc/c_4540 http://aims.fao.org/aos/agrovoc/c_8355 F30 - Génétique et amélioration des plantes F62 - Physiologie végétale - Croissance et développement Sorghum génotype zone semi-aride modèle de simulation adaptation résistance à la sécheresse photopériodicité phénologie rendement des cultures http://aims.fao.org/aos/agrovoc/c_7244 http://aims.fao.org/aos/agrovoc/c_3225 http://aims.fao.org/aos/agrovoc/c_6963 http://aims.fao.org/aos/agrovoc/c_24242 http://aims.fao.org/aos/agrovoc/c_117 http://aims.fao.org/aos/agrovoc/c_2392 http://aims.fao.org/aos/agrovoc/c_5809 http://aims.fao.org/aos/agrovoc/c_5774 http://aims.fao.org/aos/agrovoc/c_10176 http://aims.fao.org/aos/agrovoc/c_165 http://aims.fao.org/aos/agrovoc/c_4540 http://aims.fao.org/aos/agrovoc/c_8355 Kouressy, Mamoutou Dingkuhn, Michaël Vaksmann, Michel Heinemann, Alexandre Adaptation to diverse semi-arid environments of sorghum genotypes having different plant type and sensitivity to photoperiod |
description |
Climatologists, breeders and agronomists need tools to translate variable climatic conditions in semi-arid environments into probable performance, and to translate genotype characteristics into agro-ecological fit of cultivars. Although geographic adaptation of West African sorghum cultivars is largely related to local characteristics of the wet season, they require, in addition to drought tolerance, effective phenological mechanisms for temporal escape from drought and excessive humidity that would favour pests and diseases during sensitive development stages. A simulation experiment was conducted to predict the potential and attainable (water limited) growth and yield of three sorghum genotypes differing in plant type and response to photoperiod for combinations of five sowing dates and three sites on the N-S climatic gradient in Mali, for the period from 1971 to 2004. The models used were SARRA-H equipped with the phenological model Impatience. Onset and end dates of the rainy season were estimated with the simple soil water balance model BIP. The resulting scenarios were evaluated on the basis of (i) escape from drought, (ii) escape of grain development phases from periods of high pest and disease pressure and (iii) the resulting "safe" periods for sowing. The latter took into account the agronomic advantage associated with early sowing, observed by farmers to minimize weed competition and decreasing soil fertility during the wet season. The results indicated that potentially high yielding and photoperiod insensitive "modern" cultivars display an advantage only in the north where the rainy season is short. Sensitive response of flowering to photoperiod was essential for more humid environments having a long wet season, resulting in appropriate seasonal timing of flowering and greater flexibility of crop calendars. The methodology is discussed with respect to its suitability for applications in crop breeding, geographic targeting. |
format |
article |
topic_facet |
F30 - Génétique et amélioration des plantes F62 - Physiologie végétale - Croissance et développement Sorghum génotype zone semi-aride modèle de simulation adaptation résistance à la sécheresse photopériodicité phénologie rendement des cultures http://aims.fao.org/aos/agrovoc/c_7244 http://aims.fao.org/aos/agrovoc/c_3225 http://aims.fao.org/aos/agrovoc/c_6963 http://aims.fao.org/aos/agrovoc/c_24242 http://aims.fao.org/aos/agrovoc/c_117 http://aims.fao.org/aos/agrovoc/c_2392 http://aims.fao.org/aos/agrovoc/c_5809 http://aims.fao.org/aos/agrovoc/c_5774 http://aims.fao.org/aos/agrovoc/c_10176 http://aims.fao.org/aos/agrovoc/c_165 http://aims.fao.org/aos/agrovoc/c_4540 http://aims.fao.org/aos/agrovoc/c_8355 |
author |
Kouressy, Mamoutou Dingkuhn, Michaël Vaksmann, Michel Heinemann, Alexandre |
author_facet |
Kouressy, Mamoutou Dingkuhn, Michaël Vaksmann, Michel Heinemann, Alexandre |
author_sort |
Kouressy, Mamoutou |
title |
Adaptation to diverse semi-arid environments of sorghum genotypes having different plant type and sensitivity to photoperiod |
title_short |
Adaptation to diverse semi-arid environments of sorghum genotypes having different plant type and sensitivity to photoperiod |
title_full |
Adaptation to diverse semi-arid environments of sorghum genotypes having different plant type and sensitivity to photoperiod |
title_fullStr |
Adaptation to diverse semi-arid environments of sorghum genotypes having different plant type and sensitivity to photoperiod |
title_full_unstemmed |
Adaptation to diverse semi-arid environments of sorghum genotypes having different plant type and sensitivity to photoperiod |
title_sort |
adaptation to diverse semi-arid environments of sorghum genotypes having different plant type and sensitivity to photoperiod |
url |
http://agritrop.cirad.fr/543216/ http://agritrop.cirad.fr/543216/1/543216.pdf |
work_keys_str_mv |
AT kouressymamoutou adaptationtodiversesemiaridenvironmentsofsorghumgenotypeshavingdifferentplanttypeandsensitivitytophotoperiod AT dingkuhnmichael adaptationtodiversesemiaridenvironmentsofsorghumgenotypeshavingdifferentplanttypeandsensitivitytophotoperiod AT vaksmannmichel adaptationtodiversesemiaridenvironmentsofsorghumgenotypeshavingdifferentplanttypeandsensitivitytophotoperiod AT heinemannalexandre adaptationtodiversesemiaridenvironmentsofsorghumgenotypeshavingdifferentplanttypeandsensitivitytophotoperiod |
_version_ |
1792496796471132160 |