Physiological indexes of mini tomato cultivars grown in a protected environment

Authors

  • Diego Rangel da Silva Gama Universidade do Estado da Bahia
  • Kalline Mendes Ferreira Universidade do Estado da Bahia
  • Vanuza de Souza Universidade do Estado da Bahia
  • Jony Eishi Yuri Empresa Brasileira de Pesquisa Agropecuária
  • Alessandro Carlos Mesquita Universidade do Estado da Bahia

DOI:

https://doi.org/10.14393/BJ-v36n5a2020-40011

Keywords:

Shading screens, Leaf area, Growth rate.

Abstract

Shading screens are widely used to control excessive solar radiation, thereby changing plant growth. Thus, through physiological indices the objective was to evaluate the growth of three cultivars of minitomatoes under colored meshes. The experiment was conducted from April to July in the DTCS / UNEB experimental field in experiment DBC with subdivided plots, and four replicates, comprised of three shaded environments and the control treatment, three cultivars, and seven plant sampling seasons. For growth analysis, we used the destructive method, total dry matter was determined after drying it in an oven at 65°C. The total leaf area (LAI) was obtained using the software QUANT. Results showed that there was no interaction between environments and the other factors. Regarding leaf area index, cvs. Shani and Sweet Million stood out in all environments, whereas cv. Red Sugar had a similar behavior in all environments. Shani obtained the best indices in open sun environment and in the environment covered with red shading screen, and Sweet Million obtained the best index under gray shading screen. Red Sugar had the lowest LAI, and consequently, the lowest SLA and LAR. On the other hand, it showed the highest RPF, since it obtained the highest dry matter in leaves compared to the other cultivars. Cvs. Shani and Sweet Million showed the best: TAL, TCR, TCA and TCC.

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Published

2020-08-13

How to Cite

GAMA, D.R. da S., FERREIRA, K.M., SOUZA, V. de, YURI, J.E. and MESQUITA, A.C., 2020. Physiological indexes of mini tomato cultivars grown in a protected environment. Bioscience Journal [online], vol. 36, no. 5, pp. 1507–1517. [Accessed6 December 2022]. DOI 10.14393/BJ-v36n5a2020-40011. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/40011.

Issue

Section

Agricultural Sciences