Effet de l’inoculation mycorhizienne avec des souches des champignons mycorhiziens arbusculaires sur la croissance de <i>Mucuna pruriens</i> (L.) DC en condition contrôlée

Abstract

<jats:p>Au Burkina Faso, l’élevage occupe plus de 80% des ménages ruraux et constitue le troisième produit d’exportation après l’or et le coton. De type extensif, cet élevage est basé essentiellement sur l’exploitation des ressources naturelles. Ainsi, il doit s’adapter aux grandes variations saisonnières et interannuelles des ressources en biomasse végétale et en eau. Or les aléas climatiques, l’étendue et la qualité des pâturages, de même que les contraintes rendent l’activité pastorale souvent précaire. C’est ainsi que cette étude a été initiée dans le but de contribuer à améliorer la production fourragère. Dans cette étude, Mucuna pruriens a été cultivé en serre et inoculé avec deux inocula de champignons mycorhiziens arbusculaires. Les paramètres de croissance ont été mesurés à 30 et 60 jours après semis. La biomasse aérienne, racinaire et totale a été évaluée à 60 jours après semis. Les résultats montrent une amélioration de la croissance en hauteur du mucuna de 225,76%, de la biomasse aérienne de 56,79%, la biomasse racinaire de 70% et la biomasse totale de 61,16% par rapport au témoin non inoculé. Cette étude a montré des résultats intéressants et mérite d’être approfondie par des essais in situ tout en étendant l’étude sur les inoculations rhizobiennes.Mots clés : Mucuna, inoculation mycorhizienne, champignons mycorhiziens arbusculaires.&#x0D; &#x0D; English Title: Effect of mycorrhizal inoculation with arbuscular mycorrhizal fungi strains on Mucuna pruriens (L.) DC growth under controlled conditionIn Burkina Faso, breeding occupies more than 80% of rural households and is the third export product after gold and cotton. Extensive type, this breeding is based essentially on the exploitation of natural resources. Thus, it must adapt to large seasonal and interannual variations in plant biomass and water resources. Climatic hazards, the extent and quality of pastures, as well as constraints make pastoral activity often precarious. Therefore, this study was initiated with the aim of helping to improve forage production. In this study, Mucuna pruriens was grown in a greenhouse and inoculated with two inocula of arbuscular mycorrhizal fungi. The growth parameters were measured at 30 and 60 days after sowing. Shoot, root and total biomass was evaluated at 60 days after sowing. The results show an improvement in the height growth of mucuna by 225.76%, shoot biomass by 56.79%, root biomass by 70% and total biomass by 61.16% compared to the control. This study showed interesting results and deserves to be deepened by in situ tests while extending the study of rhizobial inoculations.&#x0D; Keywords: Mucuna, mycorrhizal inoculation, arbuscular mycorrhizal fungi</jats:p>

Mycorrhizal Inoculation Effect on the Forage Cowpea Biomass Production in Burkina Faso

“…As a result, Yac 2 mix appears to be more effective in improving cowpea growth. These results corroborate those of Haro et al [17] who have shown the effectiveness of mycorrhizal symbiosis on improving the growth of Mucunapruriens. These authors also showed that this efficacy was linked to the mycorrhizal inoculum.…”

Mycorrhization and root excision effects on morphological and biomass production of carob (Ceratonia siliqua L.)

“…Results showed that mycorrhizal and excised seedlings have the greatest collar root diameter than control ones and then those treated separately with mycorrhization or excision. Similar results are found by Haro et al (2020) by proving an increase of 170.51% on plant length of inoculated plants compared to non-inoculated ones.…”

Shea (&lt;i&gt;Vitellaria paradoxa&lt;/i&gt; C.F. Gaertn.) Growth Improvement by Mycorrhizal Inoculation in Controlled Conditions

“…These nutrients were depleted over time as the plants grew. Similar results were obtained by Haro et al [25]. These authors showed that mycorrhizal inoculation that was ineffective at the test start (the first 30 days after sowing) was very beneficial for Mucuna pruriens by improving its growth and production of shoot, root and total biomass at 60 days after sowing.…”