Histoire d’une innovation agricole récente à l’échelle régionale : quelle différenciation des sorghos repiqués dans le bassin du lac Tchad ?

Saïdou, Abdoul-Aziz; Raimond, Christine; Soler, Clélia; Hamadou, Tuong-Vi Cao; Kenga, R.; Benoit, Laure; Wencélius, Jean; Fokou, Oberline; Chauvin, Camille; Ekeke, Souaybou; Joly, Hélène

doi:10.4000/com.7140

Cited by 3 publications

(1 citation statement)

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“…The three sorghum types are thus not well individualized genetic entities despite their distinct names, morphological differences, and differences in organs of interest for each cultivated type. Similar results were reported by [34] on rainfed and transplanted sorghum in the Lake Chad basin. In addition, some authors have shown that differences within a species can also be due to the influence of the environment [35].…”

Section: Discussionsupporting

confidence: 90%

Genetic Relationship between Sweet Grain Sorghum and the Other Sorghum Types Cultivated in Burkina Faso Assessed with Nuclear Microsatellite Markers SSRs

Josiane¹,

Sawadogo²,

Mariam³

et al. 2022

AJPS

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Section: Discussionsupporting

confidence: 90%

Genetic Relationship between Sweet Grain Sorghum and the Other Sorghum Types Cultivated in Burkina Faso Assessed with Nuclear Microsatellite Markers SSRs

Josiane¹,

Sawadogo²,

Mariam³

et al. 2022

AJPS

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Assessment of agro-morphological variability of dry-season sorghum cultivars in Chad as novel sources of drought tolerance

Naoura

Sawadogo

Atchozou

et al. 2019

Sci Rep

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Dry-season sorghum is a type of sorghum whose establishment ends at the end of the rainy season and its development takes place during the dry and cold harmattan period. Its root system is particularly well developed with deep penetration for water withdrawal. This study was conducted to assess the level of genetic diversity present among dry-season sorghum in Chad’s Sudanese zone using phenotypic traits, and to identify new sources of drought tolerance that could be used in sorghum breeding programs. A high variability in qualitative traits was observed except for the botanical race which showed that all cultivars were of durra race. It was also observed that most cultivars had compact panicles (66.67%), mostly black glumes (66.67%), glume hairiness (58.33%) and did not have aristation (91.67%). Most qualitative traits showed a coefficient of variation of less than 30%, and the analysis of the variance showed that at 0.1% probability, there were significant differences between cultivars for all traits except botanical race. It was observed that the potential productivity of dry-season sorghum of this collection was strongly related to their staygreen characteristic; a trait of enormous importance in breeding for postflowering drought tolerance in sorghum. Plant height was highly heritable (91.9%), followed by the peduncle length (90.2%), panicle length (87.5%) and the internodes number (86.5%). Structuring of diversity separated the cultivars into four statistically distinct groups; with group 2 clustering cultivars with panicle productivity, early maturity and high staygreen, and other traits that contribute to the performance of cultivars. The findings will help to enhance the selection and production of dry-season sorghum in Chad and also provide alternative sources for staygreen introgression into the larger sorghum breeding community.

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Frontières des hommes et échanges des plantes cultivées

Robert¹,

Luxereau²,

Joly³

et al. 2014

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Histoire d’une innovation agricole récente à l’échelle régionale : quelle différenciation des sorghos repiqués dans le bassin du lac Tchad ?

Abstract: Frontière des hommes, frontière des plantes cultivées : diffusions et recompositions de l'agro-biodiversité

Cited by 3 publications

References 10 publications

Genetic Relationship between Sweet Grain Sorghum and the Other Sorghum Types Cultivated in Burkina Faso Assessed with Nuclear Microsatellite Markers SSRs

Genetic Relationship between Sweet Grain Sorghum and the Other Sorghum Types Cultivated in Burkina Faso Assessed with Nuclear Microsatellite Markers SSRs

Assessment of agro-morphological variability of dry-season sorghum cultivars in Chad as novel sources of drought tolerance

Frontières des hommes et échanges des plantes cultivées

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