Volume 30, Issue 4, October 2020, Pages 877–884
Abdoul Razack Harouna Maidoukia1, Dahiratou Ibrahim Doka2, Mamadou Aissa Jazy3, Gaston Sangaré4, and Moussa Barage5
1 Laboratoire de mycologie, Ecole Normale Supérieure, Université Abdou Moumouni de Niamey, Niger
2 Laboratoire de mycologie, Ecole Normale Supérieure, Université Abdou Moumouni de Niamey, Niger
3 Service de Botanique-Pharmacognosie, Faculté des sciences de la santé, Université Abdou Moumouni de Niamey, Niger
4 International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Niamey, BP12404, Niamey, Niger
5 Faculté d’agronomie, Université Abdou Moumouni de Niamey, Niger
Original language: French
Copyright © 2020 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Soil microorganisms actively colonize plant roots while increasing their growth and yield. The aim of the work is to characterize arbuscular mycorrhizal fungi resulting from soil fertility management practices and their variation according to the phenological stages of millet. Samples of the soil and rootlets were taken during the tillage, run and seed stages. Morphological characterization of arbuscular mycorrhizal fungal spores and study of mycorrhizal parameters revealed that Glomus and Gigaspora are the two genera of spores resulting from soil fertility management practices. Observation with a binocular magnifying glass showed hyphae, vesicles and the presence of arbuscules on some roots. The density of the two genera of spores identified varied according to the treatments. Mulch (61, 37) has the highest average density of spores. The frequency of mycorrhization reached 100% in all treatments. For the intensity of mycorrhization, mulching also recorded the highest rate (61.06). Regarding the phenological stages, the number of spores collected at the tillering stage was more abundant with a total density of (47.72). The intensity of mycorrhization of the root cortex as well as that of the arbuscular content are also greater at the tillering stage (70.53% M and 31.19% A). The tillering stage is the phenological stage that most favors the development of AMCs and mycorrhizal symbiotic activity at the level of soil fertility management practices implemented by farmers in the W park area.
Author Keywords: Soil fertility, mycorrhizae, millet, yield, spore, tillering, shoot, set.
Abdoul Razack Harouna Maidoukia1, Dahiratou Ibrahim Doka2, Mamadou Aissa Jazy3, Gaston Sangaré4, and Moussa Barage5
1 Laboratoire de mycologie, Ecole Normale Supérieure, Université Abdou Moumouni de Niamey, Niger
2 Laboratoire de mycologie, Ecole Normale Supérieure, Université Abdou Moumouni de Niamey, Niger
3 Service de Botanique-Pharmacognosie, Faculté des sciences de la santé, Université Abdou Moumouni de Niamey, Niger
4 International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Niamey, BP12404, Niamey, Niger
5 Faculté d’agronomie, Université Abdou Moumouni de Niamey, Niger
Original language: French
Copyright © 2020 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Soil microorganisms actively colonize plant roots while increasing their growth and yield. The aim of the work is to characterize arbuscular mycorrhizal fungi resulting from soil fertility management practices and their variation according to the phenological stages of millet. Samples of the soil and rootlets were taken during the tillage, run and seed stages. Morphological characterization of arbuscular mycorrhizal fungal spores and study of mycorrhizal parameters revealed that Glomus and Gigaspora are the two genera of spores resulting from soil fertility management practices. Observation with a binocular magnifying glass showed hyphae, vesicles and the presence of arbuscules on some roots. The density of the two genera of spores identified varied according to the treatments. Mulch (61, 37) has the highest average density of spores. The frequency of mycorrhization reached 100% in all treatments. For the intensity of mycorrhization, mulching also recorded the highest rate (61.06). Regarding the phenological stages, the number of spores collected at the tillering stage was more abundant with a total density of (47.72). The intensity of mycorrhization of the root cortex as well as that of the arbuscular content are also greater at the tillering stage (70.53% M and 31.19% A). The tillering stage is the phenological stage that most favors the development of AMCs and mycorrhizal symbiotic activity at the level of soil fertility management practices implemented by farmers in the W park area.
Author Keywords: Soil fertility, mycorrhizae, millet, yield, spore, tillering, shoot, set.
Abstract: (french)
Les microorganismes du sol colonisent activement les racines des plantes tout en augmentant leur croissance et leur rendement. Le but du travail vise à caractériser les champignons à mycorhize arbusculaire issus des pratiques de gestion de la fertilité du sol et leur variation en fonction des stades phénologiques du mil. Des prélèvements d’échantillons de sol et de radicelles ont été faits pendant les stades tallages, montaisons et grenaisons. La caractérisation morphologique des spores de champignons à mycorhizes arbusculaires et l’étude des paramètres de mycorhizations ont révélé que Glomus et Gigaspora sont les deux genres de spores issus des pratiques de gestion de la fertilité du sol. L’observation à la loupe binoculaire a montré des hyphes, des vésicules et la présence d’arbuscules sur certaines racines. La densité des deux genres de spores identifiée a varié selon les traitements. Le paillage (61, 37) présente la plus forte densité moyenne de spores. La fréquence de mycorhization a atteint 100 % au niveau de tous les traitements. Pour l’intensité de mycorhization, le paillage a également enregistré le taux le plus important (61,06). En ce qui concerne les stades phénologiques, le nombre de spores récoltées au stade tallage a été plus abondant avec une densité totale de (47,72). L’intensité de mycorhization du cortex racinaire ainsi que celui de la teneur en arbuscules sont également plus importantes au stade tallage (70,53 % M et 31,19 % de A). Le stade tallage est le stade phénologique qui favorise le plus un développement des CMA et une activité symbiotique mycorhizienne au niveau des pratiques de gestion de la fertilité du sol mis en place par les paysans de la zone du parc W.
Author Keywords: Fertilité du sol, mycorhize, mil, rendement, spore, tallage, montaison, grenaison.
How to Cite this Article
Abdoul Razack Harouna Maidoukia, Dahiratou Ibrahim Doka, Mamadou Aissa Jazy, Gaston Sangaré, and Moussa Barage, “Etat de la biodiversité des spores de la rhizosphère et les paramètres de mycorhization du mil en fonction des stades phénologiques et selon les pratiques culturales,” International Journal of Innovation and Applied Studies, vol. 30, no. 4, pp. 877–884, October 2020.
