Development of the prickly pear cactus Opuntia stricta (Haw.) Haw. (Cactaceae) in vitro in response to the replacement of potassium nitrate for a commercial kno3 fertilizer.

In micropropagation, potassium nitrate (KNO3), an ACS reagent grade chemical, used in the preparation of growing mediums is expensive and its procurement depends on bureaucratic procedures, as it is controlled by the Brazilian Army. This research to assessed the effect of replacing the ACS KNO3 for a commercially available fertilizer (KNO3- based) on the micropropagation of the prickly pear cactus (Opuntia stricta (Haw.) Haw. cv. Elephant Ear. Treatments used six different fertilizer concentrations (0, 0.5, 1, 1.5, 2 and 2.5 g L-1) and a control consisting of 1.9 g L-1 KNO3 , as shown in the MS salts. The survival, size and number of sprouts and the value of fresh biomass were evaluated. After seedling acclimation, we assessed the survival, number of sprouts, length, and number of roots, racket formation, average fresh biomass mass, macronutrient absorption and morphological changes of the seedlings. Explants inoculated with fertilizers at concentrations of 0.0; 2.0 and 2.5 g L-1 did not grow. The response of explants at concentrations of 0.5 and 1.5 g L-1 of the fertilizer were the same as those developed in a KNO3 medium, and at a concentration of 1.0 g L-1, in all variables, the means were higher than those of the control medium. Therefore, it showed the feasibility of using fertilizers in the in vitro cultivation of the prickly pear cactus, which may remove bureaucratic barriers and reduce product costs by 99.12%.

Bibliographic Details

Main Authors:	FERREIRA, C. C. de S., PAZ, C. D. da, SOUZA, J. C. de, PEIXORO, A. R., RIOS, L. S., NASCIMENTO, A. R., RIBEIRO, J. M., MELO, N. F. de, TEIXEIRA, S. L., ARAÚJO, J. F.
Other Authors:	CINTHIA CAROLINNE DE SOUZA FERREIRA; CRISTIANE DOMINGOS DA PAZ; JOSELITA CARDOSO DE SOUZA; ANA ROSA PEIXOTO; LUCAS SILVA RIOS; ALESSANDRO ROSA NASCIMENTO; JULIANA MARTINS RIBEIRO, CPATSA; NATONIEL FRANKLIN DE MELO, CPATSA; SILVIO LOPES TEIXEIRA; JAIRTON FRAGA ARAÚJO.
Format:	Artigo de periódico biblioteca
Language:	Ingles English
Published:	2021-09-13
Subjects:	Macronutriente, Redução de custo, Opuntia Ficus Indica, Micropropagação, Palma Forrageira, Micropropagation,
Online Access:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/1134303
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