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. 2017 Nov 28;8:2025. doi: 10.3389/fpls.2017.02025

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Copyright © 2017 Toniutti, Breitler, Etienne, Campa, Doulbeau, Urban, Lambot, Pinilla and Bertrand.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Quantity of spores per infected leaf area (also named ‘sporulation’) produced by H. vastatrix under different combinations of light intensity and nitrogen fertilization in three different genotypes. (A) The 27°C–22°C thermal regime. (B) The 23°C–18°C thermal regime. NB: The scale of the two graphs is different. For each thermal regime, four treatments were studied /N- /N- /N+ /N+ corresponding respectively to high light intensity (1000 PAR)/low nitrogen fertilization, low light intensity (300 PAR)/low nitrogen fertilization, high light intensity (1000 PAR)/high nitrogen fertilization, low light intensity (300 PAR)/high nitrogen fertilization. Circles represent the inbred line Caturra, triangles the hybrid GPFA109 and squares GPFA124. The data are means of the spores weight harvested on the coffee plant 43 days post inoculation per infected leaf area ±SD (n = 4). Within each treatment, means for a genotype followed by an asterisk are significantly different according to Tukey’s test (P < 0.05).

Inline graphic — Quantity of spores per infected leaf area (also named ‘sporulation’) produced by H. vastatrix under different combinations of light intensity and nitrogen fertilization in three different genotypes. (A) The 27°C–22°C thermal regime. (B) The 23°C–18°C thermal regime. NB: The scale of the two graphs is different. For each thermal regime, four treatments were studied /N- /N- /N+ /N+ corresponding respectively to high light intensity (1000 PAR)/low nitrogen fertilization, low light intensity (300 PAR)/low nitrogen fertilization, high light intensity (1000 PAR)/high nitrogen fertilization, low light intensity (300 PAR)/high nitrogen fertilization. Circles represent the inbred line Caturra, triangles the hybrid GPFA109 and squares GPFA124. The data are means of the spores weight harvested on the coffee plant 43 days post inoculation per infected leaf area ±SD (n = 4). Within each treatment, means for a genotype followed by an asterisk are significantly different according to Tukey’s test (P < 0.05).