Variability of photosynthetic performance among improved genotypes of Coffea canephora
ABSTRACT This study evaluated the variability of photosynthetic performance of 27 improved genotypes of Conilon coffee, cultivated in the Southern of the Espírito Santo State. The photosynthetic performance was based on the measurement of gas exchange rates and chlorophyll in the period most favorab...
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Universidade Federal De Viçosa
2025-05-01
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| Series: | Revista Ceres |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-737X2025000100400&lng=en&tlng=en |
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| author | Tafarel Victor Colodetti Marcelo Antonio Tomaz Wagner Nunes Rodrigues Bruno Fardim Christo Lima Deleon Martins Paulo Cezar Cavatte |
| author_facet | Tafarel Victor Colodetti Marcelo Antonio Tomaz Wagner Nunes Rodrigues Bruno Fardim Christo Lima Deleon Martins Paulo Cezar Cavatte |
| author_sort | Tafarel Victor Colodetti |
| collection | DOAJ |
| description | ABSTRACT This study evaluated the variability of photosynthetic performance of 27 improved genotypes of Conilon coffee, cultivated in the Southern of the Espírito Santo State. The photosynthetic performance was based on the measurement of gas exchange rates and chlorophyll in the period most favorable to the photosynthetic activity and in different stages of the reproductive cycle: flowering, fruit initiation, grain formation and fruit maturation; being expressed as the average (weighted by the number of days) along the phenological stages of the third reproductive cycle of the plants. It was possible to verify the existence of sufficient variability to differentiate the photosynthetic performance among the 27 genotypes throughout the reproductive cycle, even starting from a group of already improved genotypes. Among the physiological parameters, the rate of carbon assimilation, stomatal conductance and the transpiration rate stood out as parameters for the study of variability, mainly due to their contributions to the clustering of genotypes. The genotype 108 is highlighted due to its high photosynthetic rate, associated with higher relative content of chlorophyll, as well as reasonable water use efficiency. The genotypes 205, 206 and 305 stood out in terms of water use and carbon assimilation. |
| format | Article |
| id | doaj-art-6969554e40fe4852aaad09c7a20a1cf0 |
| institution | OA Journals |
| issn | 2177-3491 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Universidade Federal De Viçosa |
| record_format | Article |
| series | Revista Ceres |
| spelling | doaj-art-6969554e40fe4852aaad09c7a20a1cf02025-08-20T02:33:12ZengUniversidade Federal De ViçosaRevista Ceres2177-34912025-05-017210.71252/2177-34912025720014Variability of photosynthetic performance among improved genotypes of Coffea canephoraTafarel Victor Colodettihttps://orcid.org/0000-0002-9233-5988Marcelo Antonio Tomazhttps://orcid.org/0000-0002-9228-7541Wagner Nunes Rodrigueshttps://orcid.org/0000-0002-4830-0040Bruno Fardim Christohttps://orcid.org/0000-0003-3595-4691Lima Deleon Martinshttps://orcid.org/0000-0003-3921-8640Paulo Cezar Cavattehttps://orcid.org/0000-0003-2963-7673ABSTRACT This study evaluated the variability of photosynthetic performance of 27 improved genotypes of Conilon coffee, cultivated in the Southern of the Espírito Santo State. The photosynthetic performance was based on the measurement of gas exchange rates and chlorophyll in the period most favorable to the photosynthetic activity and in different stages of the reproductive cycle: flowering, fruit initiation, grain formation and fruit maturation; being expressed as the average (weighted by the number of days) along the phenological stages of the third reproductive cycle of the plants. It was possible to verify the existence of sufficient variability to differentiate the photosynthetic performance among the 27 genotypes throughout the reproductive cycle, even starting from a group of already improved genotypes. Among the physiological parameters, the rate of carbon assimilation, stomatal conductance and the transpiration rate stood out as parameters for the study of variability, mainly due to their contributions to the clustering of genotypes. The genotype 108 is highlighted due to its high photosynthetic rate, associated with higher relative content of chlorophyll, as well as reasonable water use efficiency. The genotypes 205, 206 and 305 stood out in terms of water use and carbon assimilation.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-737X2025000100400&lng=en&tlng=enConilon coffeecultivardiversitygas exchangephenological cycle |
| spellingShingle | Tafarel Victor Colodetti Marcelo Antonio Tomaz Wagner Nunes Rodrigues Bruno Fardim Christo Lima Deleon Martins Paulo Cezar Cavatte Variability of photosynthetic performance among improved genotypes of Coffea canephora Revista Ceres Conilon coffee cultivar diversity gas exchange phenological cycle |
| title | Variability of photosynthetic performance among improved genotypes of Coffea canephora |
| title_full | Variability of photosynthetic performance among improved genotypes of Coffea canephora |
| title_fullStr | Variability of photosynthetic performance among improved genotypes of Coffea canephora |
| title_full_unstemmed | Variability of photosynthetic performance among improved genotypes of Coffea canephora |
| title_short | Variability of photosynthetic performance among improved genotypes of Coffea canephora |
| title_sort | variability of photosynthetic performance among improved genotypes of coffea canephora |
| topic | Conilon coffee cultivar diversity gas exchange phenological cycle |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-737X2025000100400&lng=en&tlng=en |
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