Capacidad extractora de cadmio en materiales genéticos de cacao procedentes de la colección del instituto nacional de investigaciones agropecuaria- EETP.

This research was carried out in the greenhouse of the Department of Soil and Water Management of the Pichilingue Tropical Experimental Station of the National Institute of Agricultural Research. The objective of this work was to evaluate the cadmium extracting capacity of cocoa genetic materials from the collection of the National Institute of Agricultural Research. With the purpose of being used as patterns in the process of plant multiplication, growing in soil contaminated with cadmium. The variables under study were: vigor index (cm3), chlorophyll index (Spad), root length (cm), root dry weight (g), aerial part dry weight (g), cadmium concentration in the aerial part and root, cadmium content in the aerial part, root and aerial part + root, cadmium absorption, translocation, and phytoextraction efficiencies. To distinguish the significance of the means, Tukey's test was used at a significance level of 0.5 for the comparison of means among treatments. The best root dry weight (0.22 g), aerial part dry weight (1.70 g), and vigor index at 45 (78.84 cm3), 60 (88.92 cm3), 75 (114.12 cm3), and 90 (78.17 cm3) days after planting were found in genotype IMC-67, the longest root length was found in cocoa CCN-51 with 15.70 cm. The lowest cadmium concentration in the root (7.47 ppm) and aerial part (5.97 ppm) was evidenced in genotype POUND-12, In the same cultivar was found the lowest cadmium content in the root (7.83 Ug), aerial part (0.88) and root+ aerial part (8.71 Ug). The EET-95 genotype showed the lowest efficiency in cadmium absorption (60.56 Ug/g) and translocation (6.44 Ug/g). The cocoa genotypes showed variability in their morphological characteristics as well as in the parameters of absorption and bioaccumulation of Cd. The IMC-67 genotype showed the best vigor index. The genotype POUND-12 has a low capacity to bioaccumulate Cd, while the genotype EET-95 has the lowest capacity to absorb cadmium and translocate it to the aerial part.

• 主要作者: Rendon Holguín, Jair Alexander (author)
• 格式: bachelorThesis
• 语言: spa
• 出版: 2022
• 主题: ABSORCIÓN; SUELO; CONTAMINACIÓN; INVERNADERO; METALES PESADOS; AGRONÓMICA
• 在线阅读: http://repositorio.utc.edu.ec/handle/27000/8572