1
tesis doctoral
Publicado 2021
Enlace
Enlace
Universidad Nacional Agraria La Molina. Escuela de Posgrado. Doctorado en Agricultura Sustentable
2
artículo
Publicado 2022
Enlace
Enlace
Botrytis cinerea Pers. (B.C.) is the phytopathogen responsible for a wide range of symptom in crops of great importance, such as tomato. Fungicide application are mainly used to control this pathogen; however, their excessive use leads to the development of resistant strains, environmental pollution, and harmful effects on human health. Thus, the aim of the study was to evaluate the effects of two foliar fertilizers contain copper, zinc, and citric acid to reduce gray mold B.C. damage in “Huascarán” tomato plants. In laboratory conditions, the effects of the foliar fertilizers on the inhibition of mycelial growth at 6 DAI (days after inoculation) with poisoned PDA (Potato Dextrose Agar) medium were evaluated; and in the field conditions, the foliar fertilizers were sprayed by eight weeks varying the application frequency in one and two weeks. The results showed that in laboratory co...
3
artículo
Publicado 2023
Enlace
Enlace
The production and export of avocado fruits, cultivar Hass, has grown exponentially in recent years in Peru, however, a high incidence of symptoms such as regressive death, cankers on plant branches, and fruit rot have been observed affecting optimal crop production and fruit quality. These symptoms are mainly generated by Lasiodiplodia theobromae fungus, whose control is limited to a few active ingredients that tend to generate pathogen resistance. The present investigation had as objective to evaluate the inducing effect of resistance in the control of Lasiodiplodia theobromae in avocado (Persea americana) cultivar Hass of five bioproducts: ProtecSea, Barrera, Timorex Gold, T 22, Vacun Q Pro and water as a control treatment, with a total of 6 treatments with 4 replications, 3 avocado trees per replication. One-year-old avocado trees cultivar Hass were used. Treatments were applied th...
4
artículo
Publicado 2020
Enlace
Enlace
Tomato susceptibility/resistance to stem canker disease caused by Alternaria alternata f. sp. lycopersici and its pathogenic factor AAL-toxin is determined by the presence of the Asc1 gene. Several cultivars of commercial tomato (Solanum lycopersicum var. lycopersicum, SLL) are reported to have a mutation in Asc1, resulting in their susceptibility to AAL-toxin. We evaluated 119 ancestral tomato accessions including S. pimpinellifolium (SP), S. lycopersicum var. cerasiforme (SLC) and S. lycopersicum var. lycopersicum “jitomate criollo” (SLJ) for AAL-toxin susceptibility. Three accessions, SP PER018805, SLC PER018894, and SLJ M5-3, were susceptible to AAL-toxin. SLC PER018894 and SLJ M5-3 had a two-nucleotide deletion (nt 854_855del) in Asc1 identical to that found in SLL cv. Aichi-first. Another mutation (nt 931_932insT) that may confer AAL-toxin susceptibility was identified in SP PE...
