Field screening for heat tolerant common bean cultivars (Phaseolus vulgaris L.) by measuring of chlorophyll fluorescence induction parameters |
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Authors: | Valentina Petkova Iliya D. Denev Dimitar Cholakov Ivan Porjazov |
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Affiliation: | 1. Maritsa Vegetable Crops Research Institute, 32 Brezovsko Shosse Street, 4003 Plovdiv, Bulgaria;2. Department of Plant Physiology and Molecular Biology, University of Plovdiv, 24 Tsar Assen Street, 4000 Plovdiv, Bulgaria;3. Agricultural University, 12 Mendeleev Street, 4000 Plovdiv, Bulgaria |
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Abstract: | The temperature induced changes in chlorophyll fluorescence induction parameters (F0, Fm, Fv and their ratios) measured by a PEA analyzer were used to screen for heat-tolerance 12 cultivars and lines of common bean (Phaseolus vulgaris L.) available in the germplasm collections of Maritsa Vegetable Crops Research Institute, Plovdiv, and Institute of Plant Genetic Resources, Sadovo, Bulgaria. The experiments were carried out in a selection field of Maritsa Institute. The measurements were made on six different dates during the bean reproductive period (in June–July) when the temperatures were approximately 26 °C in the morning to and 42 °C at noon. Two lines, known earlier as heat-tolerant were used as controls. |
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Keywords: | Common bean Chlorophyll fluorescence Heat-tolerance High temperature |
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