Effect of efficient microorganisms (ME-50) on pineapple (Ananas comosus var. comosus) 'MD-2'

Abstract

Pineapple is a crop of great commercial importance in the world. Micropropagation protocols have allowed the increase of high quality seeds and the accelerated introduction of new varieties. This research was developed in the laboratories and in the acclimatization areas of the Bioplants Center, at the University of Ciego de Ávila Maximo Gomez Baez (41 ° 53´N, 78 ° 41´W, 45 m asl) during the period between the months of March to October 2020. The effect of different ME-50 treatments as foliar fertilizers was determined on the morphophysiological variables behavior of micropropagated pineapple plants (Ananas comosus var. comosus) ‘MD- 2’ during the acclimatization phase. The survival percentage, fresh and dry mass of the plant (g), length of the plant (cm), number of roots, number of leaves, fresh and dry mass of the leaf "D" (g), leaf length "D" (cm), leaf width "D" (cm), fresh and dry root mass (g) and survival were evaluated. The best results were obtained for the 75 ml.L-1 treatment, which increased the morpho-physiological indicators of the pineapple plants ‘MD-2’ during the acclimatization period. The acclimatization stage is important to achieve a good adaptation of the plants to field conditions, the micropropagated pineapple plants (Ananas comosus var. comosus) hybrid ‘MD-2’, have established an acclimatization period and a quality for their transfer to field.