Yield Components and Development in Indeterminate Tomato Landraces: An Agromorphological Approach to Promoting Their Utilization
Nowadays, increments in tomato yield seem to have reached a plateau. Tomato genebank collections have been recognized as a novel source for yield increments. The use of the diversity in Latin America for novel improved varieties is limited by the knowledge gap regarding field-grown tomatoes. As yiel...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/13/2/434 |
| _version_ | 1797622913590886400 |
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| author | Adolfo Donoso Erika Salazar |
| author_facet | Adolfo Donoso Erika Salazar |
| author_sort | Adolfo Donoso |
| collection | DOAJ |
| description | Nowadays, increments in tomato yield seem to have reached a plateau. Tomato genebank collections have been recognized as a novel source for yield increments. The use of the diversity in Latin America for novel improved varieties is limited by the knowledge gap regarding field-grown tomatoes. As yield has complex, unresolved trade-offs, agromorphological traits become useful for further improvement. In this study, the development of successive clusters was studied in twenty-four Chilean tomato landraces to elucidate the relationships among agromorphological traits of flowers, inflorescences, and fruits. Plants yielded an average of 3297 g m<sup>−2</sup>, with a variation coefficient of 0.44. Correlation analyses were performed to evaluate the relationships between yield components and plant phenology. Findings suggested a two-level compensation between average fresh fruit weight and the number of fruits, one on a plant basis and the second on a cluster basis. All traits evaluated had significant phenotypic correlations with yield traits. Growing degree days for a cluster to develop had a low negative phenotypic correlation with yield (−0.33***) and a high genetic correlation with the number of clusters (−0.90***). The number of set flowers, as opposed to the number of flowers, was significantly correlated with average fresh fruit weight (−0.17***), supporting the initiation of the trade-off after the fruit set. This study provides new insight into the plant agromorphology of indeterminate plants. In a global climate change context, further study of trade-off relationships is important for identifying genotypes able to sustain their productivity. |
| first_indexed | 2024-03-11T09:17:02Z |
| format | Article |
| id | doaj.art-797cbff188b240b4b0cec1193774ec54 |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-11T09:17:02Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-797cbff188b240b4b0cec1193774ec542023-11-16T18:34:32ZengMDPI AGAgronomy2073-43952023-01-0113243410.3390/agronomy13020434Yield Components and Development in Indeterminate Tomato Landraces: An Agromorphological Approach to Promoting Their UtilizationAdolfo Donoso0Erika Salazar1Horticultural Crops, Instituto de Investigaciones Agropecuarias, Santiago 8831314, CP, ChileGenetic Resources Unit and Germplasm Bank, Instituto de Investigaciones Agropecuarias, Santiago 8831314, CP, ChileNowadays, increments in tomato yield seem to have reached a plateau. Tomato genebank collections have been recognized as a novel source for yield increments. The use of the diversity in Latin America for novel improved varieties is limited by the knowledge gap regarding field-grown tomatoes. As yield has complex, unresolved trade-offs, agromorphological traits become useful for further improvement. In this study, the development of successive clusters was studied in twenty-four Chilean tomato landraces to elucidate the relationships among agromorphological traits of flowers, inflorescences, and fruits. Plants yielded an average of 3297 g m<sup>−2</sup>, with a variation coefficient of 0.44. Correlation analyses were performed to evaluate the relationships between yield components and plant phenology. Findings suggested a two-level compensation between average fresh fruit weight and the number of fruits, one on a plant basis and the second on a cluster basis. All traits evaluated had significant phenotypic correlations with yield traits. Growing degree days for a cluster to develop had a low negative phenotypic correlation with yield (−0.33***) and a high genetic correlation with the number of clusters (−0.90***). The number of set flowers, as opposed to the number of flowers, was significantly correlated with average fresh fruit weight (−0.17***), supporting the initiation of the trade-off after the fruit set. This study provides new insight into the plant agromorphology of indeterminate plants. In a global climate change context, further study of trade-off relationships is important for identifying genotypes able to sustain their productivity.https://www.mdpi.com/2073-4395/13/2/434<i>Solanum lycopersicum</i>indeterminate plant agromorphologyplant developmentyield componentstomato landracesChile |
| spellingShingle | Adolfo Donoso Erika Salazar Yield Components and Development in Indeterminate Tomato Landraces: An Agromorphological Approach to Promoting Their Utilization Agronomy <i>Solanum lycopersicum</i> indeterminate plant agromorphology plant development yield components tomato landraces Chile |
| title | Yield Components and Development in Indeterminate Tomato Landraces: An Agromorphological Approach to Promoting Their Utilization |
| title_full | Yield Components and Development in Indeterminate Tomato Landraces: An Agromorphological Approach to Promoting Their Utilization |
| title_fullStr | Yield Components and Development in Indeterminate Tomato Landraces: An Agromorphological Approach to Promoting Their Utilization |
| title_full_unstemmed | Yield Components and Development in Indeterminate Tomato Landraces: An Agromorphological Approach to Promoting Their Utilization |
| title_short | Yield Components and Development in Indeterminate Tomato Landraces: An Agromorphological Approach to Promoting Their Utilization |
| title_sort | yield components and development in indeterminate tomato landraces an agromorphological approach to promoting their utilization |
| topic | <i>Solanum lycopersicum</i> indeterminate plant agromorphology plant development yield components tomato landraces Chile |
| url | https://www.mdpi.com/2073-4395/13/2/434 |
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