Using Sigmoid Growth Curves to Establish Growth Models of Tomato and Eggplant Stems Suitable for Grafting in Subtropical Countries
In subtropical regions, tomato (<i>Solanum lycopersicum</i>) is mainly produced in autumn and winter. To enhance the off-season production of tomato, summer cultivation has become a prime objective. Grafting tomato scions onto eggplant (<i>Solanum melongena</i>) rootstocks is...
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| Format: | Article |
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MDPI AG
2021-12-01
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| Series: | Horticulturae |
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| Online Access: | https://www.mdpi.com/2311-7524/7/12/537 |
| _version_ | 1797504058497433600 |
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| author | Chih-Yu Hsieh Shih-Lun Fang Yea-Fang Wu Yung-Chu Chu Bo-Jein Kuo |
| author_facet | Chih-Yu Hsieh Shih-Lun Fang Yea-Fang Wu Yung-Chu Chu Bo-Jein Kuo |
| author_sort | Chih-Yu Hsieh |
| collection | DOAJ |
| description | In subtropical regions, tomato (<i>Solanum lycopersicum</i>) is mainly produced in autumn and winter. To enhance the off-season production of tomato, summer cultivation has become a prime objective. Grafting tomato scions onto eggplant (<i>Solanum melongena</i>) rootstocks is a key method to overcome the difficulties of tomato cultivation in summer. In this study, we collected seedling growth data over six growing seasons in Taiwan and established growth models by employing three commonly used sigmoid growth curves, namely the Gompertz, Richards, and Logistic curves. Cumulative temperature was introduced as an independent variable and its relationship with plant stem diameter determined. The <i>R</i><sup>2</sup> values of the growth models were 0.74–0.85 and 0.72–0.80 in calibration and validation, respectively. Performance did not differ markedly among models in the same growing season, but notable differences were observed among models for different growing seasons. In addition, the estimates of several model parameters differed significantly among the seasons; hence, separate models should be established for different seasons. The results of this study can be used in prediction of tomato and eggplant seedling growth and arrangement of the grafting schedule to improve the efficiency of seedling production in subtropical countries. |
| first_indexed | 2024-03-10T03:59:13Z |
| format | Article |
| id | doaj.art-2c2fdcce64c24d1ebfa1ecd07a7c6927 |
| institution | Directory Open Access Journal |
| issn | 2311-7524 |
| language | English |
| last_indexed | 2024-03-10T03:59:13Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Horticulturae |
| spelling | doaj.art-2c2fdcce64c24d1ebfa1ecd07a7c69272023-11-23T08:37:54ZengMDPI AGHorticulturae2311-75242021-12-0171253710.3390/horticulturae7120537Using Sigmoid Growth Curves to Establish Growth Models of Tomato and Eggplant Stems Suitable for Grafting in Subtropical CountriesChih-Yu Hsieh0Shih-Lun Fang1Yea-Fang Wu2Yung-Chu Chu3Bo-Jein Kuo4Department of Agronomy, National Taiwan University, Taipei 10617, TaiwanDepartment of Agronomy, National Chung Hsing University, Taichung 40227, TaiwanDivision of Crop Environment, Tainan District Agricultural Research and Extension Station, Tainan 71246, TaiwanDivision of Crop Improvement, Tainan District Agricultural Research and Extension Station, Tainan 71246, TaiwanDepartment of Agronomy, National Chung Hsing University, Taichung 40227, TaiwanIn subtropical regions, tomato (<i>Solanum lycopersicum</i>) is mainly produced in autumn and winter. To enhance the off-season production of tomato, summer cultivation has become a prime objective. Grafting tomato scions onto eggplant (<i>Solanum melongena</i>) rootstocks is a key method to overcome the difficulties of tomato cultivation in summer. In this study, we collected seedling growth data over six growing seasons in Taiwan and established growth models by employing three commonly used sigmoid growth curves, namely the Gompertz, Richards, and Logistic curves. Cumulative temperature was introduced as an independent variable and its relationship with plant stem diameter determined. The <i>R</i><sup>2</sup> values of the growth models were 0.74–0.85 and 0.72–0.80 in calibration and validation, respectively. Performance did not differ markedly among models in the same growing season, but notable differences were observed among models for different growing seasons. In addition, the estimates of several model parameters differed significantly among the seasons; hence, separate models should be established for different seasons. The results of this study can be used in prediction of tomato and eggplant seedling growth and arrangement of the grafting schedule to improve the efficiency of seedling production in subtropical countries.https://www.mdpi.com/2311-7524/7/12/537growing seasonGompertz modelLogistic modelRichards modelcumulative temperaturesynchronous growth |
| spellingShingle | Chih-Yu Hsieh Shih-Lun Fang Yea-Fang Wu Yung-Chu Chu Bo-Jein Kuo Using Sigmoid Growth Curves to Establish Growth Models of Tomato and Eggplant Stems Suitable for Grafting in Subtropical Countries Horticulturae growing season Gompertz model Logistic model Richards model cumulative temperature synchronous growth |
| title | Using Sigmoid Growth Curves to Establish Growth Models of Tomato and Eggplant Stems Suitable for Grafting in Subtropical Countries |
| title_full | Using Sigmoid Growth Curves to Establish Growth Models of Tomato and Eggplant Stems Suitable for Grafting in Subtropical Countries |
| title_fullStr | Using Sigmoid Growth Curves to Establish Growth Models of Tomato and Eggplant Stems Suitable for Grafting in Subtropical Countries |
| title_full_unstemmed | Using Sigmoid Growth Curves to Establish Growth Models of Tomato and Eggplant Stems Suitable for Grafting in Subtropical Countries |
| title_short | Using Sigmoid Growth Curves to Establish Growth Models of Tomato and Eggplant Stems Suitable for Grafting in Subtropical Countries |
| title_sort | using sigmoid growth curves to establish growth models of tomato and eggplant stems suitable for grafting in subtropical countries |
| topic | growing season Gompertz model Logistic model Richards model cumulative temperature synchronous growth |
| url | https://www.mdpi.com/2311-7524/7/12/537 |
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