Productivity and drought tolerance of cassava cultivars in the Coastal Tablelands of Northeastern Brazil
ABSTRACT: Ten cassava cultivars were grown in the field and evaluated to identify the most adapted to the Coastal Tablelands of northeast Brazil. The cultivars showed differences in proline and chlorophyll contents, plant height, number of leaves and branches, canopy area and root production, howeve...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Universidade Federal de Santa Maria
2016-05-01
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| Series: | Ciência Rural |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000500796&lng=en&tlng=en |
| _version_ | 1818951820898205696 |
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| author | Luciana Marques de Carvalho Hélio Wilson Lemos de Carvalho Ivênio Rubens de Oliveira Marco Antônio Sedrez Rangel Vanderlei da Silva Santos |
| author_facet | Luciana Marques de Carvalho Hélio Wilson Lemos de Carvalho Ivênio Rubens de Oliveira Marco Antônio Sedrez Rangel Vanderlei da Silva Santos |
| author_sort | Luciana Marques de Carvalho |
| collection | DOAJ |
| description | ABSTRACT: Ten cassava cultivars were grown in the field and evaluated to identify the most adapted to the Coastal Tablelands of northeast Brazil. The cultivars showed differences in proline and chlorophyll contents, plant height, number of leaves and branches, canopy area and root production, however they did not differ on photosynthetic rates. Cultivars 'Tianguá' and '9783-13' presented lower root yield, whereas 'BRS Tapioqueira' and 'Irará' had the highest root yield. Few leaves coupled with the highest water use efficiency for CO2 assimilation was found in 'BRS Kiriris' in contrast to 'BRS Jarina' and '9783-13'. 'BRS Caipira' had high proline content in both Umbaúba and Frei Paulo areas, traits usually associated to drought tolerance, that contribute to the adaptation. It is also important to consider that cultivar 'BRS Caipira' was the first to present increase in chlorophyll content after extended period of drought, that indicates a faster recovery after dry season. Furthermore, the results indicated that the most adapted cultivars for cultivation in this area are 'Irará', 'BRS Tapioqueira', 'BRS Kiriris' and 'BRS Caipira'. |
| first_indexed | 2024-12-20T09:40:34Z |
| format | Article |
| id | doaj.art-8eacac7e662b434bb78dd71d675c3c08 |
| institution | Directory Open Access Journal |
| issn | 1678-4596 |
| language | English |
| last_indexed | 2024-12-20T09:40:34Z |
| publishDate | 2016-05-01 |
| publisher | Universidade Federal de Santa Maria |
| record_format | Article |
| series | Ciência Rural |
| spelling | doaj.art-8eacac7e662b434bb78dd71d675c3c082022-12-21T19:44:54ZengUniversidade Federal de Santa MariaCiência Rural1678-45962016-05-0146579680110.1590/0103-8478cr20151035S0103-84782016000500796Productivity and drought tolerance of cassava cultivars in the Coastal Tablelands of Northeastern BrazilLuciana Marques de CarvalhoHélio Wilson Lemos de CarvalhoIvênio Rubens de OliveiraMarco Antônio Sedrez RangelVanderlei da Silva SantosABSTRACT: Ten cassava cultivars were grown in the field and evaluated to identify the most adapted to the Coastal Tablelands of northeast Brazil. The cultivars showed differences in proline and chlorophyll contents, plant height, number of leaves and branches, canopy area and root production, however they did not differ on photosynthetic rates. Cultivars 'Tianguá' and '9783-13' presented lower root yield, whereas 'BRS Tapioqueira' and 'Irará' had the highest root yield. Few leaves coupled with the highest water use efficiency for CO2 assimilation was found in 'BRS Kiriris' in contrast to 'BRS Jarina' and '9783-13'. 'BRS Caipira' had high proline content in both Umbaúba and Frei Paulo areas, traits usually associated to drought tolerance, that contribute to the adaptation. It is also important to consider that cultivar 'BRS Caipira' was the first to present increase in chlorophyll content after extended period of drought, that indicates a faster recovery after dry season. Furthermore, the results indicated that the most adapted cultivars for cultivation in this area are 'Irará', 'BRS Tapioqueira', 'BRS Kiriris' and 'BRS Caipira'.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000500796&lng=en&tlng=enManihot esculentaadaptaçãoajuste osmóticofotossínteseclorofila |
| spellingShingle | Luciana Marques de Carvalho Hélio Wilson Lemos de Carvalho Ivênio Rubens de Oliveira Marco Antônio Sedrez Rangel Vanderlei da Silva Santos Productivity and drought tolerance of cassava cultivars in the Coastal Tablelands of Northeastern Brazil Ciência Rural Manihot esculenta adaptação ajuste osmótico fotossíntese clorofila |
| title | Productivity and drought tolerance of cassava cultivars in the Coastal Tablelands of Northeastern Brazil |
| title_full | Productivity and drought tolerance of cassava cultivars in the Coastal Tablelands of Northeastern Brazil |
| title_fullStr | Productivity and drought tolerance of cassava cultivars in the Coastal Tablelands of Northeastern Brazil |
| title_full_unstemmed | Productivity and drought tolerance of cassava cultivars in the Coastal Tablelands of Northeastern Brazil |
| title_short | Productivity and drought tolerance of cassava cultivars in the Coastal Tablelands of Northeastern Brazil |
| title_sort | productivity and drought tolerance of cassava cultivars in the coastal tablelands of northeastern brazil |
| topic | Manihot esculenta adaptação ajuste osmótico fotossíntese clorofila |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000500796&lng=en&tlng=en |
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