Marta Alvarez Gil - Academia.edu (original) (raw)
Papers by Marta Alvarez Gil
Resumen es: Se evaluaron siete nuevas variedades procedentes de distintos programas de mejoramien... more Resumen es: Se evaluaron siete nuevas variedades procedentes de distintos programas de mejoramiento genetico de esta especie, una variedad local y un material semi-s...
HortScience
The Center of Scientific Research of Yucatan (CICY) has released a new openpollinated cultivar of... more The Center of Scientific Research of Yucatan (CICY) has released a new openpollinated cultivar of habanero pepper: Mayan Kisin. This is distinguished by its high performance, its bright red and very spicy fruit. 'Mayan Kisin' originated from four selection cycles carried out on landraces collected in the region of Valladolid, in the state of Yucatan, Mexico. Although the center of origin of Capsicum chinense is located in South America, in the area located between southern Brazil and eastern Bolivia, western Paraguay and northern Argentina (Aguilar-Rinc on et al., 2010), the Yucatan Peninsula is recognized as a center of genetic diversity of the species C. chinense Jacq. (Latournerie et al., 2001). In this region there are orange, red, yellow, and purple fruits of this species. It is said that the habanero pepper grown in the Yucatan Peninsula can be distinguished from habanero peppers grown in the region of the world, by its peculiar aroma, taste, and more particularly, its high level of pungency. Probably, the combination of soil and climate in the Yucatan Peninsula, located in the Mexican southeast, confers the habanero pepper cultivated in Yucat an Peninsula with characteristics that set it apart from habanero peppers cultivated in any other region of the world. These attributes allowed it to qualify for the Denomination of Origin Habanero Pepper of the Yucatan Peninsula, published by the Official Gazette of the Federation (DOF: 4 June 2010). Paradoxically, the cultivars of habanero, cultivated in the region, are characterized by their low yields, small and orange fruits, as well as the high variability
![Research paper thumbnail of Resistencia Al Tomato Yellow Leaf Curl Virus (Tylcv-Il [Cu]) en Poblaciones F2 De Tomate (S. Lycopersicum, L.), Segregantes Para Los Genes De Resistencia TY-1 y TY-2](https://attachments.academia-assets.com/82708240/thumbnails/1.jpg)
](Cultivos Tropicales, Dec 1, 2012
Resistance to Tomato Yellow Leaf Curl Virus (TYLCV-IL [CU]) in F 2 tomato (S. lycopersicum, L.) p... more Resistance to Tomato Yellow Leaf Curl Virus (TYLCV-IL [CU]) in F 2 tomato (S. lycopersicum, L.) populations segregating for Ty-1 y Ty-2 genes
Cultivos Tropicales, Dec 6, 2012
El arroz (Oryza sativa L.) es uno de los cereales de mayor producción a nivel mundial y, junto co... more El arroz (Oryza sativa L.) es uno de los cereales de mayor producción a nivel mundial y, junto con el trigo y la carne o el pescado, constituye la base de la alimentación humana. El 75 % de la población mundial lo incluye en su dieta alimenticia diaria y puede superar, en algunos casos, el consumo de otros cereales como el maíz y el trigo (1, 2).
Cultivos Tropicales, Jul 5, 2013
Cultivos Tropicales, Dec 6, 2012
ABSTRACT The characters of yield and its components were evaluated in tomato F1 hybrids, obtained... more ABSTRACT The characters of yield and its components were evaluated in tomato F1 hybrids, obtained through two statistical genetic designs (Top cross and Biparental) and their progenitors, seeded within the optimal crop season (October 15-December 20, 2006) at the National Institute of Agricultural Sciences. The experiment was performed in asbestos cement gutters with a microjet irrigation system under organoponic conditions. The percentage of heterosis and narrow-sense heritability was estimated. The study of heterosis enabled to identify those hybrids showing a better behavior than their cultivars of origin, regarding many important characters for the producer, reaching the highest yield values at the Top cross, and yield as well as fruit number at the Biparental one. Every character showed high values of heritability, except yield per plant with mean values.
Cultivos Tropicales, Dec 18, 2012
The present study was carried out at the National Institute of Agricultural Sciences (INCA), with... more The present study was carried out at the National Institute of Agricultural Sciences (INCA), with the objective of evaluating 14 tomato cultivars coming from different regions and breeding programs to identify, through qualitative and quantitative analyses, those progenitors enabling to obtain national high-quality hybrids. The experiment was performed in asbestos cement gutters with a microjet irrigation system under organoponic conditions. Results from the Main Components analyses showed those quantitative characters contributing the most to the total variation, standing out fruit number per plant, average fruit weight and polar as well as equatorial diameters in component 1, whereas in component 2 stood out yield per plant and days to flowering and maturity of studied cultivars; meanwhile Biplot and Cluster Analysis Dendrogram representation allowed to identify cultivars LMN-64, Vyta, Amalia, Floradel AN-104-1 and A4 with the highest differences among themselves in the evaluated ...
Malena y Yaily son nuevas variedades de tomate de consumo fresco, con crecimiento determinado com... more Malena y Yaily son nuevas variedades de tomate de consumo fresco, con crecimiento determinado compacto y frutos grandes. Se obtuvieron por programa de hibridación y selección a partir del cruzamiento entre la línea cubana MP-1 y la variedad comercial Campbell-28, introducida de los EE.UU. Estas variedades se han validado en el Instituto Nacional de Ciencias Agrícolas (INCA) y en diferentes sistemas de producción pertenecientes a las provincias de La Habana, Cienfuegos, Camagüey y Holguín.
Conventional plant breeding is primarily basedon phenotypic selection of superior individuals amo... more Conventional plant breeding is primarily basedon phenotypic selection of superior individuals amongsegregating progenies resulting from hybridization. It is oftentime consuming as breeding a new cultivar takes between eightand ten years and even then, the release of improved cultivaris not guaranteed. Hence, breeders are extremely interested innew technologies that could make this procedure moreefficient. Marker-assisted selection, often simply referred toas Marker-Assisted Selection (MAS) offers such a possibilityby adopting a wide range of novel approaches to improvingthe selection strategies in crop breeding. Molecular markersare powerful research tools that make it possible to determinethe genetic makeup of plants; for that it is possible the selectionby plants genotype. In this paper, we refer the significantadvancements towards application of molecular markertechnology for crop improvement in the last decade, in tomato.Finally, we discuss reasons why the greater adoption of MA...
El cultivo del tomate en Cuba, al igual que en la mayoría de los países tropicales, se limita gen... more El cultivo del tomate en Cuba, al igual que en la mayoría de los países tropicales, se limita generalmente al período óptimo, que coincide con la estación seca de invierno, debido a los bajos rendimientos y pobre calidad
The aim of this work was to identify the sunspotperformance in tomato fruits (Solanum lycopersicu... more The aim of this work was to identify the sunspotperformance in tomato fruits (Solanum lycopersicum). A scaleand an index that permits described the intensity and severityof sunspot damage. Additionally, we realized a histological,quality and nutritional study. The 80 percent of evaluated fruitwas affected by sunspot, with law intensity but a maximseverity in the scale. The histological in healthy and damagedfruits show different between pericarp cell sizes and morphologic. The quality values not show affectations, butthe lycopene concentration decreased in fruits with sunspot(92 to 74 ¿g/g). Results allow confirm the present of sunspot disorder, characterized by aberrant ripening and low lycopeneconcentration in the tomato shoulder fruits. Theseobservations provide a basis for comparing sunspot inuniformly ripening tomatoes with other blotchy ripeningdisorders.
One of the major viral pathogens of tomato (Solanum lycopersicum L.) crop in Cuba and many other ... more One of the major viral pathogens of tomato (Solanum lycopersicum L.) crop in Cuba and many other countries is the tomato yellow leaf curl virus (TYLCV), a Begomovirus from Geminiviridae family, which are transmitted by the whitefly Bemisia tabaci (Genn.). At present, plant breeding for disease resistance or tolerance constitutes one of the most promising ways to reduce damages caused by this virus, since most existing tomato seedlings are susceptible to it. This study evaluated the agromorphological characteristics and resistance to TYLCV of eight tomato genotypes introduced in our country. From the agromorphologic viewpoint, a phenotypical variability was detected in all materials evaluated. Except the susceptible control, every accession was asymptomatic to the virus; however, viral concentrations were recorded just in some sampled plants of these accessions.
Identification of the Ty-3 gene, of resistance to begomovirus, in accessions of Solanum lycopersi... more Identification of the Ty-3 gene, of resistance to begomovirus, in accessions of Solanum lycopersicum L.
The tomato yellow leaf curl virus (TYLCV) is one of the most dangerous Begomovirus affecting toma... more The tomato yellow leaf curl virus (TYLCV) is one of the most dangerous Begomovirus affecting tomato productions in Cuba. At present, several genes related to resistance have been described. Ty-1, Ty-2 and Ty-3 are the most widely used genes in plant breeding programs. In Cuba, there is only one Ty-1 gene-carrier called Vyta. This work identified the presence of the band related to Ty-2 gene resistant pattern in two characterized materials. For Ty-3 gene, all genotypes showed the susceptible pattern.
Horticultura Brasileira
Begomoviruses cause diseases of major economic importance in many crops, especially in tropical a... more Begomoviruses cause diseases of major economic importance in many crops, especially in tropical and subtropical regions. Together with other families of viruses, the begomoviruses cause great damage for producers of fresh and processed tomatoes. The objective of this study was to evaluate the behavior of 11 resistant genotypes to Tomato yellow leaf curl virus (TYLCV) when infected by the begomoviruses Tomato severe rugose virus (ToSRV) and Tomato yellow spot virus (ToYSV) under greenhouse conditions. Tomato plants were inoculated by biobalistic method when displaying two true leaves. Viral infection was confirmed by visual observation of symptoms and by dot blot hybridization. Genotypes STY2, STY5, STY6 and L7 were selected as promising due to the absence of symptoms and very low viral concentration for both viruses. The resistance genes Ty-1 and Ty-2 were not effective against the viral species used in the study. The lines TY52, H24 and CLN2116B, carrying these genes, exhibited a s...
![Research paper thumbnail of Resistencia al Tomato Yellow Leaf Curl Virus (TYLCV-IL [CU]) en poblaciones F2 de tomate (S. lycopersicum, L.), segregantes para los genes de resistencia Ty-1 y Ty-2](https://attachments.academia-assets.com/82708232/thumbnails/1.jpg)
](Resistance to Tomato Yellow Leaf Curl Virus (TYLCV-IL [CU]) in F 2 tomato (S. lycopersicum, L.) p... more Resistance to Tomato Yellow Leaf Curl Virus (TYLCV-IL [CU]) in F 2 tomato (S. lycopersicum, L.) populations segregating for Ty-1 y Ty-2 genes
Horticultura Brasileira, 2012
Os begomovírus causam doenças de grande importância econômica em diversas culturas, principalment... more Os begomovírus causam doenças de grande importância econômica em diversas culturas, principalmente em regiões tropicais e subtropicais. Juntamente com outras famílias de vírus, os begomovírus têm causado grande prejuízo para os produtores de tomate in natura e para processamento industrial. O objetivo deste trabalho foi avaliar o comportamento de 11 genótipos resistentes ao Tomato yellow leaf curl virus (TYLCV) frente à infecção pelos begomovírus Tomato yellow spot virus (ToYSV) e Tomato severe rugose virus (ToSRV) em condições de casa-vegetação. A inoculação das plantas foi realizada via biobalística no estádio de duas folhas verdadeiras. A infecção viral confirmou-se pelo desenvolvimento dos sintomas e pela técnica de hibridização dot blot. Selecionaram-se como promissores os genótipos STY2, STY5, STY6 e L7, por não apresentarem sintomas e por terem concentrações virais muito baixas para os dois vírus. O espectro de resistência dos genes Ty-1 e Ty-2 não resultaram efetivos ante as...
Resumen es: Se evaluaron siete nuevas variedades procedentes de distintos programas de mejoramien... more Resumen es: Se evaluaron siete nuevas variedades procedentes de distintos programas de mejoramiento genetico de esta especie, una variedad local y un material semi-s...
HortScience
The Center of Scientific Research of Yucatan (CICY) has released a new openpollinated cultivar of... more The Center of Scientific Research of Yucatan (CICY) has released a new openpollinated cultivar of habanero pepper: Mayan Kisin. This is distinguished by its high performance, its bright red and very spicy fruit. 'Mayan Kisin' originated from four selection cycles carried out on landraces collected in the region of Valladolid, in the state of Yucatan, Mexico. Although the center of origin of Capsicum chinense is located in South America, in the area located between southern Brazil and eastern Bolivia, western Paraguay and northern Argentina (Aguilar-Rinc on et al., 2010), the Yucatan Peninsula is recognized as a center of genetic diversity of the species C. chinense Jacq. (Latournerie et al., 2001). In this region there are orange, red, yellow, and purple fruits of this species. It is said that the habanero pepper grown in the Yucatan Peninsula can be distinguished from habanero peppers grown in the region of the world, by its peculiar aroma, taste, and more particularly, its high level of pungency. Probably, the combination of soil and climate in the Yucatan Peninsula, located in the Mexican southeast, confers the habanero pepper cultivated in Yucat an Peninsula with characteristics that set it apart from habanero peppers cultivated in any other region of the world. These attributes allowed it to qualify for the Denomination of Origin Habanero Pepper of the Yucatan Peninsula, published by the Official Gazette of the Federation (DOF: 4 June 2010). Paradoxically, the cultivars of habanero, cultivated in the region, are characterized by their low yields, small and orange fruits, as well as the high variability
Cultivos Tropicales, Dec 1, 2012
Resistance to Tomato Yellow Leaf Curl Virus (TYLCV-IL [CU]) in F 2 tomato (S. lycopersicum, L.) p... more Resistance to Tomato Yellow Leaf Curl Virus (TYLCV-IL [CU]) in F 2 tomato (S. lycopersicum, L.) populations segregating for Ty-1 y Ty-2 genes
Cultivos Tropicales, Dec 6, 2012
El arroz (Oryza sativa L.) es uno de los cereales de mayor producción a nivel mundial y, junto co... more El arroz (Oryza sativa L.) es uno de los cereales de mayor producción a nivel mundial y, junto con el trigo y la carne o el pescado, constituye la base de la alimentación humana. El 75 % de la población mundial lo incluye en su dieta alimenticia diaria y puede superar, en algunos casos, el consumo de otros cereales como el maíz y el trigo (1, 2).
Cultivos Tropicales, Jul 5, 2013
Cultivos Tropicales, Dec 6, 2012
ABSTRACT The characters of yield and its components were evaluated in tomato F1 hybrids, obtained... more ABSTRACT The characters of yield and its components were evaluated in tomato F1 hybrids, obtained through two statistical genetic designs (Top cross and Biparental) and their progenitors, seeded within the optimal crop season (October 15-December 20, 2006) at the National Institute of Agricultural Sciences. The experiment was performed in asbestos cement gutters with a microjet irrigation system under organoponic conditions. The percentage of heterosis and narrow-sense heritability was estimated. The study of heterosis enabled to identify those hybrids showing a better behavior than their cultivars of origin, regarding many important characters for the producer, reaching the highest yield values at the Top cross, and yield as well as fruit number at the Biparental one. Every character showed high values of heritability, except yield per plant with mean values.
Cultivos Tropicales, Dec 18, 2012
The present study was carried out at the National Institute of Agricultural Sciences (INCA), with... more The present study was carried out at the National Institute of Agricultural Sciences (INCA), with the objective of evaluating 14 tomato cultivars coming from different regions and breeding programs to identify, through qualitative and quantitative analyses, those progenitors enabling to obtain national high-quality hybrids. The experiment was performed in asbestos cement gutters with a microjet irrigation system under organoponic conditions. Results from the Main Components analyses showed those quantitative characters contributing the most to the total variation, standing out fruit number per plant, average fruit weight and polar as well as equatorial diameters in component 1, whereas in component 2 stood out yield per plant and days to flowering and maturity of studied cultivars; meanwhile Biplot and Cluster Analysis Dendrogram representation allowed to identify cultivars LMN-64, Vyta, Amalia, Floradel AN-104-1 and A4 with the highest differences among themselves in the evaluated ...
Malena y Yaily son nuevas variedades de tomate de consumo fresco, con crecimiento determinado com... more Malena y Yaily son nuevas variedades de tomate de consumo fresco, con crecimiento determinado compacto y frutos grandes. Se obtuvieron por programa de hibridación y selección a partir del cruzamiento entre la línea cubana MP-1 y la variedad comercial Campbell-28, introducida de los EE.UU. Estas variedades se han validado en el Instituto Nacional de Ciencias Agrícolas (INCA) y en diferentes sistemas de producción pertenecientes a las provincias de La Habana, Cienfuegos, Camagüey y Holguín.
Conventional plant breeding is primarily basedon phenotypic selection of superior individuals amo... more Conventional plant breeding is primarily basedon phenotypic selection of superior individuals amongsegregating progenies resulting from hybridization. It is oftentime consuming as breeding a new cultivar takes between eightand ten years and even then, the release of improved cultivaris not guaranteed. Hence, breeders are extremely interested innew technologies that could make this procedure moreefficient. Marker-assisted selection, often simply referred toas Marker-Assisted Selection (MAS) offers such a possibilityby adopting a wide range of novel approaches to improvingthe selection strategies in crop breeding. Molecular markersare powerful research tools that make it possible to determinethe genetic makeup of plants; for that it is possible the selectionby plants genotype. In this paper, we refer the significantadvancements towards application of molecular markertechnology for crop improvement in the last decade, in tomato.Finally, we discuss reasons why the greater adoption of MA...
El cultivo del tomate en Cuba, al igual que en la mayoría de los países tropicales, se limita gen... more El cultivo del tomate en Cuba, al igual que en la mayoría de los países tropicales, se limita generalmente al período óptimo, que coincide con la estación seca de invierno, debido a los bajos rendimientos y pobre calidad
The aim of this work was to identify the sunspotperformance in tomato fruits (Solanum lycopersicu... more The aim of this work was to identify the sunspotperformance in tomato fruits (Solanum lycopersicum). A scaleand an index that permits described the intensity and severityof sunspot damage. Additionally, we realized a histological,quality and nutritional study. The 80 percent of evaluated fruitwas affected by sunspot, with law intensity but a maximseverity in the scale. The histological in healthy and damagedfruits show different between pericarp cell sizes and morphologic. The quality values not show affectations, butthe lycopene concentration decreased in fruits with sunspot(92 to 74 ¿g/g). Results allow confirm the present of sunspot disorder, characterized by aberrant ripening and low lycopeneconcentration in the tomato shoulder fruits. Theseobservations provide a basis for comparing sunspot inuniformly ripening tomatoes with other blotchy ripeningdisorders.
One of the major viral pathogens of tomato (Solanum lycopersicum L.) crop in Cuba and many other ... more One of the major viral pathogens of tomato (Solanum lycopersicum L.) crop in Cuba and many other countries is the tomato yellow leaf curl virus (TYLCV), a Begomovirus from Geminiviridae family, which are transmitted by the whitefly Bemisia tabaci (Genn.). At present, plant breeding for disease resistance or tolerance constitutes one of the most promising ways to reduce damages caused by this virus, since most existing tomato seedlings are susceptible to it. This study evaluated the agromorphological characteristics and resistance to TYLCV of eight tomato genotypes introduced in our country. From the agromorphologic viewpoint, a phenotypical variability was detected in all materials evaluated. Except the susceptible control, every accession was asymptomatic to the virus; however, viral concentrations were recorded just in some sampled plants of these accessions.
Identification of the Ty-3 gene, of resistance to begomovirus, in accessions of Solanum lycopersi... more Identification of the Ty-3 gene, of resistance to begomovirus, in accessions of Solanum lycopersicum L.
The tomato yellow leaf curl virus (TYLCV) is one of the most dangerous Begomovirus affecting toma... more The tomato yellow leaf curl virus (TYLCV) is one of the most dangerous Begomovirus affecting tomato productions in Cuba. At present, several genes related to resistance have been described. Ty-1, Ty-2 and Ty-3 are the most widely used genes in plant breeding programs. In Cuba, there is only one Ty-1 gene-carrier called Vyta. This work identified the presence of the band related to Ty-2 gene resistant pattern in two characterized materials. For Ty-3 gene, all genotypes showed the susceptible pattern.
Horticultura Brasileira
Begomoviruses cause diseases of major economic importance in many crops, especially in tropical a... more Begomoviruses cause diseases of major economic importance in many crops, especially in tropical and subtropical regions. Together with other families of viruses, the begomoviruses cause great damage for producers of fresh and processed tomatoes. The objective of this study was to evaluate the behavior of 11 resistant genotypes to Tomato yellow leaf curl virus (TYLCV) when infected by the begomoviruses Tomato severe rugose virus (ToSRV) and Tomato yellow spot virus (ToYSV) under greenhouse conditions. Tomato plants were inoculated by biobalistic method when displaying two true leaves. Viral infection was confirmed by visual observation of symptoms and by dot blot hybridization. Genotypes STY2, STY5, STY6 and L7 were selected as promising due to the absence of symptoms and very low viral concentration for both viruses. The resistance genes Ty-1 and Ty-2 were not effective against the viral species used in the study. The lines TY52, H24 and CLN2116B, carrying these genes, exhibited a s...
Resistance to Tomato Yellow Leaf Curl Virus (TYLCV-IL [CU]) in F 2 tomato (S. lycopersicum, L.) p... more Resistance to Tomato Yellow Leaf Curl Virus (TYLCV-IL [CU]) in F 2 tomato (S. lycopersicum, L.) populations segregating for Ty-1 y Ty-2 genes
Horticultura Brasileira, 2012
Os begomovírus causam doenças de grande importância econômica em diversas culturas, principalment... more Os begomovírus causam doenças de grande importância econômica em diversas culturas, principalmente em regiões tropicais e subtropicais. Juntamente com outras famílias de vírus, os begomovírus têm causado grande prejuízo para os produtores de tomate in natura e para processamento industrial. O objetivo deste trabalho foi avaliar o comportamento de 11 genótipos resistentes ao Tomato yellow leaf curl virus (TYLCV) frente à infecção pelos begomovírus Tomato yellow spot virus (ToYSV) e Tomato severe rugose virus (ToSRV) em condições de casa-vegetação. A inoculação das plantas foi realizada via biobalística no estádio de duas folhas verdadeiras. A infecção viral confirmou-se pelo desenvolvimento dos sintomas e pela técnica de hibridização dot blot. Selecionaram-se como promissores os genótipos STY2, STY5, STY6 e L7, por não apresentarem sintomas e por terem concentrações virais muito baixas para os dois vírus. O espectro de resistência dos genes Ty-1 e Ty-2 não resultaram efetivos ante as...