Responses of Cowpea Genotypes to Arbuscular Mycorrhiza

Abstract

A pot experiment was conducted under glasshouse conditions to evaluate response of some cowpea genotypes to Arbuscular Mycorrhiza. It was a 2 x 6 factorial experiment comprising factors of mycorrhizal inoculation (M) with AM fungal inoculum (M 1 ) and without AM fungal inoculum (M 0 ), and of plant genotypes (G) with G f (a cowpea inbred line), G m (a mung bean inbred line), G h1, G h2 , G h3 and G h4 (the 1 st , 2 sd , 3 rd and 4 th generation of cowpea hybrids, derived from cross-breeding G f x G m as female and male parents, respectively), and arranged in a completely randomized design with 9 replicated pots, where plants were grown up for 14, 28 and 42 days before harvested serially. Responses of cowpea genotypes to colonization and contribution of mycorrrhizal symbiosis varied greatly. The intensity of plant roots colonized by mycorrhizal fungi was highest on G f , and it was descent on the cowpea hybrids following their generation order. On the other hand, the highest in plant growth response to mycorrhizal function was on G m , followed by G h1 and G h2 . These results indicated that the cross-breed of cowpea and mung bean lines has generated cowpea hybrids that tend to benefit less from mycorrhizal symbiosis for their growth.

The growth response of pokem (Setaria italica L.) inoculated with arbuscular mycorrhizal fungi (AMF) from tailings area

“…The numbers followed by the same letters on the mean of treatment and control were not significantly different in the 5% contrast test (+) / (-): interaction types and inoculums significant or not significant. The response of plant growth to AMF varies for each type of plant (Rohyadi et al, 2017;Setyaningsih et al, 2018;Begum et al, 2019). Some results of this study are different from those previous study by Suharno et al (2017) and Wilujeng et al (2020) on maize.…”

“…AMF response in enhancing the growth of plants is very diverse. Most AMFs can significantly increase plant growth, but some do not have a significant effect (Tarbell and Koske, 2007;Bücking et al, 2012;Rohyadi et al, 2017). Positive responses often occur when the treatment of plant growth is done on the land or media, which is lacking phosphorus (Tarbell and Koske, 2007) and marginal land (Suharno et al, 2017).…”

Space and Vine Cultivar Interact to Determine the Arbuscular Mycorrhizal Fungal Community Composition

“…However, findings point towards non-random association patterns in plant-AM fungal identities [ 7 ], and the wide functional diversity exhibited by fungal taxa [ 8 ] highlights the importance of the knowledge of plant-fungal partner identity when optimizing agricultural production systems. Furthermore, it has been shown that different varieties of the same crop can respond differently to the same AM fungal isolates [ 9 , 10 ]. Other authors have found differences in the composition of AM fungal communities associated with different varieties, even when initially exposed to the same AM fungal community.…”