Effect of phenological variation on photoperiodic sensitive sorghum production in the Sahel
Studies were conducted to characterize diverse sorghums varieties adaptation to climate change at the Institut d'Economie Rurale (IER) of Mali in three sites covering latitude and rainfall gradients. Experimental sites were Cinzana Agronomic Research Station (600 mm rain fall, latitude 13° 15 N, longitude 5° 58 W); Sotuba Research Station (900 mm rainfall, latitude 12° 39 N, longitude 7° 56 W) and Farako research Station (1000 mm, latitude 11°21 N, longitude 5°46 W). A split plot design with planting date as main factor and varieties as sub factor, in a randomized complete block design (RCBD) was used. 200kg/ha of "15N- 15P205-15 K20 were applied 2 weeks after seedling emergence while 50kg/ha of urea (46N-0-0) were side dressed 4 weeks after seedling emergence. Dates of phonological phases for each variety were scored from emergence to panicle initiation. Above ground biomass was also measured (stems, leaves, panicles). Results indicated that most varieties react to variation in sowing dates by reducing their cycle (emergence to maturity) from 7 to 20 days from north to south gradients (13°N to 11°N). This is a consequence of varieties sensitivity to day length (photoperiod). Total biomass was reduced (50 to 800g m-²) with vegetative phases shortening. There exists great variability among varieties within and between sites on total biomass produced. This variability is due to threshold differences in varieties sensitivity to photoperiod. These results justify well the early sowing practices of Sahelian farmers which support reasonable use of their biodiversity in order to better exploit early rain falls. These practices are to mitigate climate change effects. (Texte intégral)
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Hohenheim University
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Subjects: | F30 - Génétique et amélioration des plantes, F62 - Physiologie végétale - Croissance et développement, P40 - Météorologie et climatologie, Sorghum bicolor, photopériodicité, date de semis, variation génétique, phénotype, changement climatique, variété, http://aims.fao.org/aos/agrovoc/c_7247, http://aims.fao.org/aos/agrovoc/c_5809, http://aims.fao.org/aos/agrovoc/c_16208, http://aims.fao.org/aos/agrovoc/c_15975, http://aims.fao.org/aos/agrovoc/c_5776, http://aims.fao.org/aos/agrovoc/c_1666, http://aims.fao.org/aos/agrovoc/c_8157, http://aims.fao.org/aos/agrovoc/c_6734, http://aims.fao.org/aos/agrovoc/c_4540, |
Online Access: | http://agritrop.cirad.fr/560998/ http://agritrop.cirad.fr/560998/1/document_560998.pdf |
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F30 - Génétique et amélioration des plantes F62 - Physiologie végétale - Croissance et développement P40 - Météorologie et climatologie Sorghum bicolor photopériodicité date de semis variation génétique phénotype changement climatique variété http://aims.fao.org/aos/agrovoc/c_7247 http://aims.fao.org/aos/agrovoc/c_5809 http://aims.fao.org/aos/agrovoc/c_16208 http://aims.fao.org/aos/agrovoc/c_15975 http://aims.fao.org/aos/agrovoc/c_5776 http://aims.fao.org/aos/agrovoc/c_1666 http://aims.fao.org/aos/agrovoc/c_8157 http://aims.fao.org/aos/agrovoc/c_6734 http://aims.fao.org/aos/agrovoc/c_4540 F30 - Génétique et amélioration des plantes F62 - Physiologie végétale - Croissance et développement P40 - Météorologie et climatologie Sorghum bicolor photopériodicité date de semis variation génétique phénotype changement climatique variété http://aims.fao.org/aos/agrovoc/c_7247 http://aims.fao.org/aos/agrovoc/c_5809 http://aims.fao.org/aos/agrovoc/c_16208 http://aims.fao.org/aos/agrovoc/c_15975 http://aims.fao.org/aos/agrovoc/c_5776 http://aims.fao.org/aos/agrovoc/c_1666 http://aims.fao.org/aos/agrovoc/c_8157 http://aims.fao.org/aos/agrovoc/c_6734 http://aims.fao.org/aos/agrovoc/c_4540 |
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F30 - Génétique et amélioration des plantes F62 - Physiologie végétale - Croissance et développement P40 - Météorologie et climatologie Sorghum bicolor photopériodicité date de semis variation génétique phénotype changement climatique variété http://aims.fao.org/aos/agrovoc/c_7247 http://aims.fao.org/aos/agrovoc/c_5809 http://aims.fao.org/aos/agrovoc/c_16208 http://aims.fao.org/aos/agrovoc/c_15975 http://aims.fao.org/aos/agrovoc/c_5776 http://aims.fao.org/aos/agrovoc/c_1666 http://aims.fao.org/aos/agrovoc/c_8157 http://aims.fao.org/aos/agrovoc/c_6734 http://aims.fao.org/aos/agrovoc/c_4540 F30 - Génétique et amélioration des plantes F62 - Physiologie végétale - Croissance et développement P40 - Météorologie et climatologie Sorghum bicolor photopériodicité date de semis variation génétique phénotype changement climatique variété http://aims.fao.org/aos/agrovoc/c_7247 http://aims.fao.org/aos/agrovoc/c_5809 http://aims.fao.org/aos/agrovoc/c_16208 http://aims.fao.org/aos/agrovoc/c_15975 http://aims.fao.org/aos/agrovoc/c_5776 http://aims.fao.org/aos/agrovoc/c_1666 http://aims.fao.org/aos/agrovoc/c_8157 http://aims.fao.org/aos/agrovoc/c_6734 http://aims.fao.org/aos/agrovoc/c_4540 Abdulai, Lansah Kouressy, Mamoutou Vaksmann, Michel Tekete, Mohamed Mahamady, Kane Asch, Folkard Giese, Marcus Effect of phenological variation on photoperiodic sensitive sorghum production in the Sahel |
description |
Studies were conducted to characterize diverse sorghums varieties adaptation to climate change at the Institut d'Economie Rurale (IER) of Mali in three sites covering latitude and rainfall gradients. Experimental sites were Cinzana Agronomic Research Station (600 mm rain fall, latitude 13° 15 N, longitude 5° 58 W); Sotuba Research Station (900 mm rainfall, latitude 12° 39 N, longitude 7° 56 W) and Farako research Station (1000 mm, latitude 11°21 N, longitude 5°46 W). A split plot design with planting date as main factor and varieties as sub factor, in a randomized complete block design (RCBD) was used. 200kg/ha of "15N- 15P205-15 K20 were applied 2 weeks after seedling emergence while 50kg/ha of urea (46N-0-0) were side dressed 4 weeks after seedling emergence. Dates of phonological phases for each variety were scored from emergence to panicle initiation. Above ground biomass was also measured (stems, leaves, panicles). Results indicated that most varieties react to variation in sowing dates by reducing their cycle (emergence to maturity) from 7 to 20 days from north to south gradients (13°N to 11°N). This is a consequence of varieties sensitivity to day length (photoperiod). Total biomass was reduced (50 to 800g m-²) with vegetative phases shortening. There exists great variability among varieties within and between sites on total biomass produced. This variability is due to threshold differences in varieties sensitivity to photoperiod. These results justify well the early sowing practices of Sahelian farmers which support reasonable use of their biodiversity in order to better exploit early rain falls. These practices are to mitigate climate change effects. (Texte intégral) |
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conference_item |
topic_facet |
F30 - Génétique et amélioration des plantes F62 - Physiologie végétale - Croissance et développement P40 - Météorologie et climatologie Sorghum bicolor photopériodicité date de semis variation génétique phénotype changement climatique variété http://aims.fao.org/aos/agrovoc/c_7247 http://aims.fao.org/aos/agrovoc/c_5809 http://aims.fao.org/aos/agrovoc/c_16208 http://aims.fao.org/aos/agrovoc/c_15975 http://aims.fao.org/aos/agrovoc/c_5776 http://aims.fao.org/aos/agrovoc/c_1666 http://aims.fao.org/aos/agrovoc/c_8157 http://aims.fao.org/aos/agrovoc/c_6734 http://aims.fao.org/aos/agrovoc/c_4540 |
author |
Abdulai, Lansah Kouressy, Mamoutou Vaksmann, Michel Tekete, Mohamed Mahamady, Kane Asch, Folkard Giese, Marcus |
author_facet |
Abdulai, Lansah Kouressy, Mamoutou Vaksmann, Michel Tekete, Mohamed Mahamady, Kane Asch, Folkard Giese, Marcus |
author_sort |
Abdulai, Lansah |
title |
Effect of phenological variation on photoperiodic sensitive sorghum production in the Sahel |
title_short |
Effect of phenological variation on photoperiodic sensitive sorghum production in the Sahel |
title_full |
Effect of phenological variation on photoperiodic sensitive sorghum production in the Sahel |
title_fullStr |
Effect of phenological variation on photoperiodic sensitive sorghum production in the Sahel |
title_full_unstemmed |
Effect of phenological variation on photoperiodic sensitive sorghum production in the Sahel |
title_sort |
effect of phenological variation on photoperiodic sensitive sorghum production in the sahel |
publisher |
Hohenheim University |
url |
http://agritrop.cirad.fr/560998/ http://agritrop.cirad.fr/560998/1/document_560998.pdf |
work_keys_str_mv |
AT abdulailansah effectofphenologicalvariationonphotoperiodicsensitivesorghumproductioninthesahel AT kouressymamoutou effectofphenologicalvariationonphotoperiodicsensitivesorghumproductioninthesahel AT vaksmannmichel effectofphenologicalvariationonphotoperiodicsensitivesorghumproductioninthesahel AT teketemohamed effectofphenologicalvariationonphotoperiodicsensitivesorghumproductioninthesahel AT mahamadykane effectofphenologicalvariationonphotoperiodicsensitivesorghumproductioninthesahel AT aschfolkard effectofphenologicalvariationonphotoperiodicsensitivesorghumproductioninthesahel AT giesemarcus effectofphenologicalvariationonphotoperiodicsensitivesorghumproductioninthesahel |
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1792497891129950208 |
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dig-cirad-fr-5609982024-01-28T19:28:08Z http://agritrop.cirad.fr/560998/ http://agritrop.cirad.fr/560998/ Effect of phenological variation on photoperiodic sensitive sorghum production in the Sahel. Abdulai Lansah, Kouressy Mamoutou, Vaksmann Michel, Tekete Mohamed, Mahamady Kane, Asch Folkard, Giese Marcus. 2011. In : International Conference on Crop improvement, Ideotyping, and Modelling for African Cropping Systems under Climate Change - CIMAC, University of Hohenheim, 7-9 February 2011 : Book of abstracts. University of Hohenheim. Stuttgart : Hohenheim University, Résumé, 39. International Conference on Crop Improvement, Ideotyping and Modelling for African Cropping Systems under Climate Change, Hohenheim, Allemagne, 7 Février 2011/9 Février 2011.https://risocas.uni-hohenheim.de/fileadmin/einrichtungen/risocas/downloads/PS2-A2-Kourssey.pdf <https://risocas.uni-hohenheim.de/fileadmin/einrichtungen/risocas/downloads/PS2-A2-Kourssey.pdf> Effect of phenological variation on photoperiodic sensitive sorghum production in the Sahel Abdulai, Lansah Kouressy, Mamoutou Vaksmann, Michel Tekete, Mohamed Mahamady, Kane Asch, Folkard Giese, Marcus eng 2011 Hohenheim University International Conference on Crop improvement, Ideotyping, and Modelling for African Cropping Systems under Climate Change - CIMAC, University of Hohenheim, 7-9 February 2011 : Book of abstracts F30 - Génétique et amélioration des plantes F62 - Physiologie végétale - Croissance et développement P40 - Météorologie et climatologie Sorghum bicolor photopériodicité date de semis variation génétique phénotype changement climatique variété http://aims.fao.org/aos/agrovoc/c_7247 http://aims.fao.org/aos/agrovoc/c_5809 http://aims.fao.org/aos/agrovoc/c_16208 http://aims.fao.org/aos/agrovoc/c_15975 http://aims.fao.org/aos/agrovoc/c_5776 http://aims.fao.org/aos/agrovoc/c_1666 http://aims.fao.org/aos/agrovoc/c_8157 Sahel Mali http://aims.fao.org/aos/agrovoc/c_6734 http://aims.fao.org/aos/agrovoc/c_4540 Studies were conducted to characterize diverse sorghums varieties adaptation to climate change at the Institut d'Economie Rurale (IER) of Mali in three sites covering latitude and rainfall gradients. Experimental sites were Cinzana Agronomic Research Station (600 mm rain fall, latitude 13° 15 N, longitude 5° 58 W); Sotuba Research Station (900 mm rainfall, latitude 12° 39 N, longitude 7° 56 W) and Farako research Station (1000 mm, latitude 11°21 N, longitude 5°46 W). A split plot design with planting date as main factor and varieties as sub factor, in a randomized complete block design (RCBD) was used. 200kg/ha of "15N- 15P205-15 K20 were applied 2 weeks after seedling emergence while 50kg/ha of urea (46N-0-0) were side dressed 4 weeks after seedling emergence. Dates of phonological phases for each variety were scored from emergence to panicle initiation. Above ground biomass was also measured (stems, leaves, panicles). Results indicated that most varieties react to variation in sowing dates by reducing their cycle (emergence to maturity) from 7 to 20 days from north to south gradients (13°N to 11°N). This is a consequence of varieties sensitivity to day length (photoperiod). Total biomass was reduced (50 to 800g m-²) with vegetative phases shortening. There exists great variability among varieties within and between sites on total biomass produced. This variability is due to threshold differences in varieties sensitivity to photoperiod. These results justify well the early sowing practices of Sahelian farmers which support reasonable use of their biodiversity in order to better exploit early rain falls. These practices are to mitigate climate change effects. (Texte intégral) conference_item info:eu-repo/semantics/conferenceObject Conference info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/560998/1/document_560998.pdf application/pdf Cirad license info:eu-repo/semantics/openAccess https://agritrop.cirad.fr/mention_legale.html https://risocas.uni-hohenheim.de/fileadmin/einrichtungen/risocas/downloads/PS2-A2-Kourssey.pdf http://catalogue-bibliotheques.cirad.fr/cgi-bin/koha/opac-detail.pl?biblionumber=212131 http://catalogue-bibliotheques.cirad.fr/cgi-bin/koha/opac-detail.pl?biblionumber=211837 info:eu-repo/semantics/altIdentifier/purl/https://risocas.uni-hohenheim.de/fileadmin/einrichtungen/risocas/downloads/PS2-A2-Kourssey.pdf |