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Rhizophagus irregularis MUCL 41,833 Association with Green Cuttings of Prunus sp. Rootstocks

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Abstract

Sour cherry ‘Latvijas Zemais’ (Prunus cerasus) is a promising dwarfing rootstock for sweet cherries in Latvia, but low growing rate of newly propagated sour cherry plants limits their use. Plum rootstock PU 20651 was selected from hybrids of P. cerasifera and P. salicina ssp. usuriensis recently. The aim of our study was to estimate the effect of arbuscular mycorrhizal fungus (AMF) Rhizophagus irregularis MUCL 41833 (Ri) on the growth and P content of rooted green cuttings of sour cherry ‘Latvijas Zemais’ 52, cherry rootstock Gisela 5 (P. cerasus x P. canescens), and plum rootstock PU 20651. The cuttings were planted in peat substrate and grown in plastic tunnel equipped with automatic air moistening system and controllable floor heating. We determined growth parameters and P content in shoots and roots, intensity of mycorrhizal colonization, and frequency of mycorrhiza in root system. In all three Prunus sp. genotypes, the inoculation with Ri resulted in the root colonization. PU 20651 had highest level of colonization at all arbuscular mycorrhiza (AM) estimation parameters. A common effect of colonization was increased diameter of root collar and positive correlation between the leaf number and AM parameters. The effect of Ri on plant biomass and P content depended on the genotype. Beneficial effect of AM on root mass and root P content was detected in ‘Latvijas Zemais’ 52. However, no AM effects on P content were found in Gisela 5, but little negative impact of AM on shoot mass and shoot P content—in PU 20651.

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Acknowledgments

This research was funded by Europe Social Fund Project No. 2013/0048/1DP/1.1.1.2.0/13/APIA/VIAA/008. ID-L especially thanks Professor Dr. Stéphane Declerck and Dr. Sylvie Cranenbrouck for helpful advices in experiment planning and for spores of Rhizophagus irregularis MUCL 41833 for pre-experiment with green cuttings of cherries Gisela 5. Thanks to Dr. Inta Krasnova for help at laboratory.

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Correspondence to Daina Feldmane.

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Feldmane, D., Druva-Lūsīte, I., Pole, V. et al. Rhizophagus irregularis MUCL 41,833 Association with Green Cuttings of Prunus sp. Rootstocks. J Plant Growth Regul 40, 533–540 (2021). https://doi.org/10.1007/s00344-020-10116-1

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  • DOI: https://doi.org/10.1007/s00344-020-10116-1

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