Acevedo Sánchez, María de L.

Profile Picture

Filters

20171
Reset filters

Settings

Citations

Publication Search Results

Now showing 1 - 1 of 1
  • Thumbnail Image
    Publication
    Microflora asociada a diferentes especies de yautía (Xanthosoma SPP.) y la identificación de medidas a nivel poscosecha para minimizar el daño en cormos y cormelos
    (2017) Acevedo Sánchez, María de L.; Zapata Serrano, Mildred; College of Agricultural Sciences; Bosques Vega, Ángel; Giraldo Zapata, Martha; González Vélez, Agenol; Department of Crops and Agro-Environmental Sciences; Santiago Román, Aidsa I.
    Tanier (Xanthosoma spp.) has a great economic importance worldwide, but its production is lower than its demand. In Puerto Rico diseases caused via plant pathogenic bacteria and fungi are limiting tanier production creating an increment of its importation. In 2013 the importation of tanier was of 13,382 tons. The Agricultural Experimental Station is recommending the cultivar, Nazareno for its commercialization, flour production and economic development. The objective of this research was to study the range of postharvest pathogens found in Nazareno and other cultivars, and the identification of a suitable postharvest management that minimize the damage in corms and cormels. Postharvest fungi isolated from diseased corms and cormels tissues were Aspergillus niger, Aspergillus terreus, Fusarium spp., Penicillium spp., Sclerotium rolfsii and Verticillium spp. Pathogenicity tests were conducted using tissues from three tanier species: X. violaceum (purple), X. saggitifolium (white) and X. atrovirens (yellow), on a complete randomized block design with three replications per tissue (corms and cormels). To determine the host range pathogenicity tests were performed on other edible tubers such as sweet potato (Ipomoea batatas), potato (Solanum tuberosum), yam (Dioscorea alata) and cassava (Manihot esculenta) with the pathogens found and some of the causal agents of the dry root rot, Pythium spp. and Rhizoctonia spp. Postharvest management was conducted to study weight loss in corms and cormels using six treatments: 1. Control, 2. Kocide®, 3. Serenade®, 4. Oxidate®, 5. Clorox® and 6. Actigard®, and storage conditions over plastic pallets, 1. Under a tent and 2. Under the shade of a tree. For the three species of Xanthosoma spp. and the edible tubers the most virulent organisms were Sclerotium rolfsii and Verticillium spp. The least susceptible of the edible tubers was the sweet potato. Weight loss was less under the tent and the best products were Oxidate®, Control and Actigard®.