Data/hora: 03/06/2024 06:29:14

Provedor de dados: | 65
País: | Brazil
Título: | Productivity and drought tolerance of cassava cultivars in the Coastal Tablelands of Northeastern Brazil
Autores: | Carvalho,Luciana Marques de; Carvalho,Hélio Wilson Lemos de; Oliveira,Ivênio Rubens de; Rangel,Marco Antônio Sedrez; Santos,Vanderlei da Silva.
Data: | 2016-05-01
Ano: | 2016
Palavras-chave: | Manihot esculenta; Adaptation; Osmotic adjustment; Photosynthesis; Chlorophyll.
Resumo: | 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'.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000500796
Editor: | Universidade Federal de Santa Maria
Relação: | 10.1590/0103-8478cr20151035
Formato: | text/html
Fonte: | Ciência Rural  v.46 n.5 2016
Fonte: | info:eu-repo/semantics/openAccess