Data/hora: 09/06/2024 06:40:49

Provedor de dados: | 42
País: | Brazil
Título: | Analysis of morpho-agronomic and climatic variables in successive agricultural years provides novel information regarding the phenological cycle of Jatropha in conditions of the Brazilian cerrado
Autores: | DOMICIANO,GISELE P.; ALVES,ALEXANDRE A.; LAVIOLA,BRUNO G.; ALBRECHT,JULIO C.
Data: | 2014-12-01
Ano: | 2014
Palavras-chave: | Jatropha curcas; Flowering; Growth; Yield.
Resumo: | Phenological studies can provide information that enables the understanding of the dynamics of plants and how these dynamics are related to the biotic and abiotic environment. In order to study the phenological phases of Jatropha during two agricultural years, agronomic and climatic variables, such as temperature and rainfall, were evaluated. Data for each variable in each year and each genotype were subjected to analysis of variance (ANOVA) and the differences were tested at 5% probability by F test. In addition, the correlation of growth behavior and reproductive development of two Jatropha accessions (CNPAE-102 and CNPAE-169) as a function of time elapsed after the start of the phenological cycle with climatic variables were analyzed through Pearson's correlation. It was found that: (i) the resuming of plant growth by producing new branches and flowers of both genotypes coincides with the start of the rainy season, (ii) the flowering may be related to the increase in temperature and rainfall; (iii) the number of inflorescences per plant and number of female flowers determine the number of green fruits, (iv) the environmental changes are responsible for the delimitation of phenophases; and finally that (v) the responses to phenological changes are genotype-dependent.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000401985
Editor: | Academia Brasileira de Ciências
Relação: | 10.1590/0001-3765201420130226
Formato: | text/html
Fonte: | Anais da Academia Brasileira de Ciências  v.86 n.4 2014
Fonte: | info:eu-repo/semantics/openAccess