Data/hora: 08/06/2024 01:10:49

Biblioteca(s): | Embrapa Agroenergia.
Data corrente: | 28/09/2015
Data da última atualização: | 20/09/2017
Autoria: | CHRISTO, L. F.; COLODETTI, T. V.; AMARAL, J. F. T. do; RODRIGUES, W. N.; MARTINS, L. D.; BRINATE, S. V. B.; REIS, E. F. dos; LAVIOLA, B. G.; TOMAZ, M. A.
Afiliação: | Leonardo Fardim Christo, Universidade Federal do Espírito Santo; Tafarel Victor Colodetti, Universidade Federal do Espírito Santo; José Francisco Teixeira do Amaral, Universidade Federal do Espírito Santo; Wagner Nunes Rodrigues, Universidade Federal do Espírito Santo; Lima Deleon Martins, Universidade Federal do Espírito Santo; Sebastião Vinícius Batista Brinate, Universidade Federal do Espírito Santo; Edvaldo Fialho dos Reis, Universidade Federal do Espírito Santo; BRUNO GALVEAS LAVIOLA, CNPAE; Marcelo Antonio Tomaz, Universidade Federal do Espírito Santo.
Título: | Performance of genotypes of physic nut conditioned by water availability.
Ano de publicação: | 2015
Fonte/Imprenta: | American-Eurasian Journal of Agricultural & Environmental Sciences, v. 15, n. 8, p. 1486-1493, 2015.
DOI: | 10.5829/idosi.aejaes.2015.15.8.12737
Idioma: | Inglês
Conteúdo: | The present study aimed to investigate the selection of genotypes tolerant to drought are greatly important, especially considering the actual panorama of climate change, in which the temperature rises and the period of water restrictions may extend, greatly impacting the agriculture. In breeding programs, it is necessary to compare the performance of different genotypes when subjected to water stress to make possible to identify sources to improvement toward the drought tolerance and water use efficiency. This experiment aimed to evaluate the early growth of genotypes of physic nut (Jatropha curcas L.) cultivated with different levels of available water in the soil. The experiment followed a 5x4 factorial scheme, submitting five genotypes of physic nut (CNPAE 128, CNPAE 170, CNPAE 171, CNPAE 183 e CNPAE 198) to four levels of water availability in the soil (10%, 30%, 50% and 100%), in a completely randomized design, in order to evaluate their initial growth. Biometric variables and biomass production and allocation were measured. The results show that, to a certain degree, plants of physic nut are able to tolerate water deficit, keeping growth and biomass production in different levels of available water in the soil. It can be inferred that plants of physic nut are able to develop efficient strategies to tolerate these conditions, such as reduction of leaf area and preservation of stem juiciness. Plants of physic nut are able to tolerate drought without compromising the total production of biomass in the initial stages of development. It is possible to identify differences among genotypes of physic nut regarding the response to the drought
Palavras-Chave: | Pinhão manso.
Thesagro: | Jatropha Curcas; Resistência a Seca.
Thesaurus Nal: | biodiesel; drought tolerance.
Categoria do assunto: | --
Registro original: | Embrapa Agroenergia (CNPAE)
Exemplares: | CNPAE - (2684-1) - UPC - AP - DD -  -  -  - DIS