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Agronomy 2019, 9(3), 119; https://doi.org/10.3390/agronomy9030119

Multi-Parental Advances Generation Inter-Cross Population, to Develop Organic Tomato Genotypes by Participatory Plant Breeding

1
Research Centre for Vegetable and Ornamental Crops, Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria (CREA), Via Salaria 1, 63077 Monsampolo del Tronto (AP), Italy
2
ISI Sementi SpA, 43036 Fidenza (PR), Italy
*
Author to whom correspondence should be addressed.
Received: 6 February 2019 / Revised: 25 February 2019 / Accepted: 26 February 2019 / Published: 2 March 2019
(This article belongs to the Section Horticultural and Floricultural Crops)
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Abstract

A Multi-parent Advanced Generation Intercross (MAGIC) tomato population was developed by crossing eight founder lines chosen to include a wide range of variability. The lines were previously genotyped by a genotyping by sequencing approach. The MAGIC population was used to develop genotypes with important agronomic traits and to perform the Participatory Plant Breeding (PPB). Among the 400 plants of generation 4 (G4) of the MAGIC population cultivated in an organic field experiment, 22 individuals were phenotypically selected and a molecular analysis was done for both presence of resistance genes and fruit shape (marker assisted selection) on G5 seedlings. Three selected plants showed both the pyramiding gene of resistance to the main diseases and the ovate gene for pear shape typology. The 400 G10 stable lines that obtained from single seed descent will represent an important genetic resource for the tomato scientific community. The MAGIC population G4 was also cultivated in three organic farms located in North, Central and South Italy to carry out the PPB. The plants showed significant phenotypic differences in development, productivity and fruit color. This variability was used to select families of tomato adapted to low input crop management, different environments, agricultural practices and market conditions. View Full-Text
Keywords: MAGIC development; organic agriculture; participatory plant breeding; tomato selection and seed production; biotic stress tolerance; marker assisted selection MAGIC development; organic agriculture; participatory plant breeding; tomato selection and seed production; biotic stress tolerance; marker assisted selection
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Campanelli, G.; Sestili, S.; Acciarri, N.; Montemurro, F.; Palma, D.; Leteo, F.; Beretta, M. Multi-Parental Advances Generation Inter-Cross Population, to Develop Organic Tomato Genotypes by Participatory Plant Breeding. Agronomy 2019, 9, 119.

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