Study of the variability and evaluation of the effect of nitrogen fertilization in a collection of entries of traditional varieties of tomato “de penjar”.

Summary:

[ES] Tomato (Solanum lycopersicum L.) is the most important vegetable crop in the Mediterranean regions. Improving the efficiency of nitrogen use by plants is becoming essential. By …[+]


[ES] Tomato (Solanum lycopersicum L.) is the most important vegetable crop in the Mediterranean regions. Improving the efficiency of nitrogen use by plants is becoming essential. Therefore, a greater resistance of tomatoes seems more and more interesting in order to obtain a better adaptation to the most common abiotic stress conditions such as the limitation of N in soils. Therefore, to minimize the contribution of N, an efficient management of fertilizers together with the identification of efficient genotypes of high N use could be one of the main challenges to maintain high crop yields reducing environmental and economic costs and health. The main objectives of this work are to identify competitive traditional “De Penjar” tomato varieties with agronomic behavior comparable to or better than commercial materials, since it can be very interesting for their transfer to Valencian farmers, showing them that indigenous materials could become very competitive and at the same time take advantage of its high resilience to autochthonous diseases from the Alcalá de Chivert region (Castellón) through the reduction of nitrogen (N) fertilizers. In this project descriptors from IPBGRI and a collection of 59 entries of traditional tomato varieties “De Penjar” from the Germplasm Bank of the Institute for the Conservation and Improvement of Valencian Agrodiversity (COMAV) of the Polytechnic University of Valencia were used. The field test took place in the municipality of Alcocéber (Castellón) during the summer of 2019 for a period of two months. Entries were selected according to different criteria such as the incidence of concentric, radial and blossom end-rot cracking; but also taking into account the productive level and composition characteristics.

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[EN] Tomato (Solanum lycopersicum L.) is the most important vegetable crop in the Mediterranean regions. Improving the efficiency of nitrogen use by plants is becoming essential. Therefore, a greater resistance of tomatoes …[+]


[EN] Tomato (Solanum lycopersicum L.) is the most important vegetable crop in the Mediterranean regions. Improving the efficiency of nitrogen use by plants is becoming essential. Therefore, a greater resistance of tomatoes seems more and more interesting in order to obtain a better adaptation to the most common abiotic stress conditions such as the limitation of N in soils. Therefore, to minimize the contribution of N, an efficient management of fertilizers together with the identification of efficient genotypes of high N use could be one of the main challenges to maintain high crop yields reducing environmental and economic costs and health. The main objectives of this work are to identify competitive traditional ‘De Penjar’ tomato varieties with agronomic performance comparable to or better than commercial materials, since it can be very interesting for their transfer to Valencian farmers, showing them that indigenous materials could become very competitive and at the same time take advantage of its high resilience to autochthonous diseases from the Alcalá de Chivert region (Castellón) through the reduction of nitrogen (N) fertilizers. This project used descriptors from the IPBGRI and a collection of 59 entries of traditional tomato varieties `De Penjar¿ from the Germplasm Bank of the Institute for the Conservation and Improvement of Valencian Agrodiversity (COMAV) of the Polytechnic University of Valencia. The field test took place in the municipality of Alcocéber (Castellón) during the summer of 2019 for a period of two months. Entries were selected according to different criteria such as the incidence of concentric, radial and blossom end-rot cracking; but also taking into account the productive level and composition characteristics.

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