Abstract

CAMPOSECO-MONTEJO, Neymar et al. Effect of the rootstock on the stomatal index and density of bell pepper Capsicum annuum var. annuum. Ecosistemas y recur. agropecuarios [online]. 2018, vol.5, n.15, pp.555-561. ISSN 2007-901X.  https://doi.org/10.19136/era.a5n15.1539.

The aim was to determine the effect of the rootstock and graft on the stomatal index and density of pepper chili. The treatments were grafted and ungrafted pepper, with five replicates. Stomatal density, index, length and width were determined with a Carl Zeeis microscope with an integrated camera and AxionVisionRel.4.8 measuring software. Significant differences were found in adaxial and abaxial stomatal density and index, with the grafted pepper surpassing the ungrafted pepper by 26.20, 21.07 and 8.74%, respectively. The ungrafted pepper surpassed the grafted pepper by 8.51% in density of abaxial epidermal cells, while the grafted pepper surpassed the ungrafted pepper by 8.64 and 11.22% in stomatal length and width, respectively. The rootstock increased the stomatal index and density of the surface and underside, as well as the size of stomata and epidermal cells of the underside, thereby modifying the physiological behavior of the plant.

Keywords : Graft; stomata; transpiration; foliar morphology; carbon dioxide.

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