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Agronomy 2019, 9(1), 20; https://doi.org/10.3390/agronomy9010020

Influence of Temperature on the Development of Peach Fruit in a Subtropical Climate Region

1
Departamento de Agricultura, Universidade Federal de Lavras (UFLA), Lavras-MG 37200-000, Brazil
2
Departamento de Agronomia, Centro Universitário Tocantinense Presidente Antônio Carlos (UNITPAC), Araguaína-TO 77816-540, Brazil
3
Departamento de Fitopatologia, Universidade Federal de Lavras, Lavras-MG 37200-000, Brazil
4
Horticulture Program Team, Plant and Environmental Sciences Department, Clemson University, Clemson, SC 29634, USA
5
Departmento de Fitotecnia, Universidade Federal de Viçosa/UFV, Viçosa-MG 36570-900, Brazil
6
Embrapa Clima Temperado, BR 392, km 78, Caixa Postal 403, Pelotas 96010-971, Brazil
7
Departamento de Medicina Veterinária, Universidade Federal Fluminense (UFF), Niterói-RJ 24230-340, Brazil
*
Author to whom correspondence should be addressed.
Received: 31 October 2018 / Revised: 28 November 2018 / Accepted: 17 December 2018 / Published: 7 January 2019
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Abstract

Understanding the growing process and fruit size differences among peach cultivars is extremely important in the technological domain of the crop and can provide information to improve the proper crop management (thinning and harvesting seasons) and the crop breeding of fruits with a larger caliber. However, this information is still incipient in subtropical regions and requires further research, especially in Brazil. The aim of this study was to determine the influence of temperature on the growing of four peach cultivars (Tropical, Aurora-2, Ouro Mel-4, and Biuti) under subtropical conditions of field cultivation. Fruit development was determined every two weeks throughout the cycle with 30 fruits from previously identified branches from six different plants of each cultivar. Regarding the thermal accumulation in growing degree-days (GDD), the cultivar ‘Tropical’ showed the lowest agronomic fruit properties (size and mass) and required a lower GDD accumulation during the development stages of the fruits, whereas the cultivar ‘Biuti’ showed higher thermal requirements and higher agronomic properties. The number of cells had greater influence on the final fruit size than the cell area. View Full-Text
Keywords: cell area; mesocarp; number of cells; Prunus persica L.; scanning electron microscopy cell area; mesocarp; number of cells; Prunus persica L.; scanning electron microscopy
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Souza, F.; Alves, E.; Pio, R.; Castro, E.; Reighard, G.; Freire, A.I.; Mayer, N.A.; Pimentel, R. Influence of Temperature on the Development of Peach Fruit in a Subtropical Climate Region. Agronomy 2019, 9, 20.

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