Browsing by Autor "Mariela Baldelomar"

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Correlación fenotípica y genotípica-molecular de la resistencia a enfermedades en variedades mejoradas de papa (Solanum tuberosum L.)
(Selva Andina Research Society, 2015) Mariela Baldelomar; Julio Gabriel; Silene Veramendi; Ariana Terán; G. Plata
En dos campañas consecutivas
La importancia de la ecología en medicina veterinaria
(2023) Mariela Baldelomar
Marcadores moleculares asociados a genes/QTLs de resistencia para factores bióticos en nuevas variedades de papa (Solanum tuberosum L.) de Bolivia
(2016) Silene Veramendi; Mariela Baldelomar; Ariana Terán; Julio Gabriel
Con el objetivo de asociar genes/QTLs de resistencia a los virus PVY, PVX, a los nematodos (Globodera pallida y G. rostochiensis), al tizón (Phytophthora infestans) y a la verruga (Synchytrium endobóticum) en 20 variedades de papa, incluida la variedad Waych'a como control susceptible, se evaluaron siete marcadores moleculares para SCAR, CAPS y PCR. Los resultados mostraron que el alelo del marcador RySC3 co-localizado con el gen Ryadg de resistencia a PVY, fue observado en todas las variedades evaluadas. El alelo para el marcador CP60 co-localizado con el gen Rx1 para resistencia a PVX, fue observado en todas las variedades excepto en Chota Ñawi. El alelo para el marcador HC co-localizado con el gen/QTL RGp5-vrnHC para resistencia a G. pallida, fue observado en las variedades Aurora, Chota Ñawi, Isabel, Keila, Morita, P'alta Chola, Pujyuni imilla, Robusta, Rosada, Victoria, Violeta, Yungueñita, Jaspe e India. El alelo para el marcador Gro1-4 co-localizado con el gen Gro1-4 para resistencia a G. rostochiensis, fue observado en las variedades Chota Ñawi, Isabel, Keila, Victoria, Violeta, Jaspe e India. El alelo para el marcador GP94 co-localizado con el gen/QTL Rpi-phu 1 para resistencia a P. infestans, fue observado en todas las variedades. Finalmente el alelo para el marcador NL25 co-localizado con el gen Sen1 para resistencia a S. endobioticum, fue también observado en todas las variedades.Aceptado para publicación: Noviembre 30, 2011
Phenotypic and molecular-genotypic correlation of diseases resistance in improved varieties potato (Solanum tuberosum L.)
(2015) Mariela Baldelomar; Julio Gabriel; Silene Veramendi; Ariana Terán; G. Plata
In two consecutive agricultural campaigns (2010-2011 and 2011-2012), 18 improved potato varieties were planted in the PROINPA Foundation greenhouses as well as two witness varieties (Waych’a and Desirée) with the aim to study: i) late blight resistance (Phytophthora infestans), wart (Synchytrium endobioticum) an virus PVX and ii) validate molecular markers GP94, RB, CP60 and NL25 for co-localizing with major resistance genes of diseases mentioned. The results showed significant differences among varieties for AUDPCrel (late blight), severity (Wart) and severity and absorbance (PVX). Different levels of resistance were observed in varieties, such varieties with high resistance and moderate resistance. Molecular analysis were highly significant to Pr<0.01 of probability for three of the market used. It was observed that the allele for marker GP94 was co-located with the resistance gene Rpi-phu1 for late blight at a distance of 350 bp, showing the resistance allele in all varieties except the Waych'a variety. The allele for RB marker that is co-localizes with the RB gene for resistance to blight was not found in any of the varieties tested. The allele for marker CP60 was co-located with Rx1 gene to PVX resistance at a distance of 350 bp and it was observed in almost all varieties except Chota Ñawi variety. Finally, the allele for marker NL25 is co-located with Sen1 gene resistance to wart at a distance of 1000 bp and it was observed in all varieties.
Pollination system of two endemic Bolivian cacti: Harrisia tetracantha and Neoraimondia herzogiana
(2018) Ariel A. Arzabe; Luís F. Aguirre; Mariela Baldelomar
Columnar cacti may present different mating systems that vary according to distinct factors, and the studies of these systems are essential to preserve cactus species. Bolivia is the fourth country with most diversity of Cactaceae, still scarce information about the reproductive biology of the endemic cactus species is known. Therefore, we assessed the pollination type, pollination syndrome and flower visitors of the endemic columnar cacti Harrisia tetracantha and Neoraimondia herzogiana. We hypothesize that they would present cross and self-pollination as strategies to ensure reproduction in the bioclimatic variable dry inter-Andean valleys.