Abstract

MONGE-PEREZ, José Eladio  and  LORIA-COTO, Michelle. Tomato (Solanum lycopersicum L.) grown under greenhouse conditions: correlations among variables. Tecnología en Marcha [online]. 2019, vol.32, n.3, pp.37-54. ISSN 0379-3982.  http://dx.doi.org/10.18845/tm.v32i2.4478.

For 63 tomato genotypes grown under greenhouse conditions the researchers estimated Pearson correlations among seven quantitative variables: number of days to the start of harvest (days after transplant), fruit weight (g), number of fruits per cluster, yield (ton/ha), fruit firmness (N), percentage of total soluble solids (°Brix), and fruit juice pH. The only two Pearson correlations evaluated in the 63 genotypes that were high (r ≥ 0,69) and statistically significant (p ≤ 0,05), were obtained among percentage of total soluble solids and fruit weight (r = -0,72), showing a linear regression statistic (R2) of 0.52; and among percentage of total soluble solids and the number of days to the start of harvest (r = -0,71; R2 = 0,50);. Statistically significant correlations were observed in ten additional cases, not across all genotypes but estimated according the type of tomato or the planting date.

Keywords : Solanum lycopersicum; quality; yield; °Brix; Pearson correlation; linear regression.

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