Gas exchange, growth, yield and beverage quality of Coffea arabica cultivars grafted on to C. canephora and C. congensis (2001)
- Authors:
- Autor USP: TRIVELIN, PAULO CESAR OCHEUZE - CENA
- Unidade: CENA
- Subjects: PLANTAS ESTIMULANTES; ECOFISIOLOGIA VEGETAL
- Language: Inglês
- Abstract: Gas exchange, leaf carbon isotope discrimination, growth, yield and beverage quality were evaluated for two Coffea arabica cultivars (Catuai and Mundo Novo), grafted on to C. canephora and C. congensis progenies growing in open fields. During the years 1994 to 1997, grafting resulted in an average increase in bean yield of 151 and 89% for Catuai and Mundo Novo respectively. As analysed by sensory analyses and by the ratio btween the mono-isomers anddi-isomers of caffeoylquinic acid, beverage quality of the C. arabica was not altered by grafting. Shoot growth was significantly greater in grafted plants, showing an increase of 52% in total leaf area compared with the non-grafted plants. Under condition of water excess in the soil there was little difference in the transpiration and stomatal conductance rates between the grafted and non-grafted plants, but the net photosynthesis was higher in grafted plants. With an accentuated water deficit in the soil in the dry period, the grafted plants showed siggnificantly higher transpiration and stomatal conductance rates than the non-grafted plants, and similar values to those of C. canephora. Carbon isotope discrimanation was greater in the grafted plants, suggesting greater root hydraulic conductance. The results suggest that the better performance of the grafted plants during the dry period was due to the greater capacity of the root system of C. canephora to provide water to the shoot thereby maintaining greater gasexchange in the leaves and consequently a greater carbon gain
- Imprenta:
- Source:
- Volume/Número/Paginação/Ano: v.37, p.241-252, 2001
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ABNT
FAHL, J I et al. Gas exchange, growth, yield and beverage quality of Coffea arabica cultivars grafted on to C. canephora and C. congensis. v. 37, p. 241-252, 2001Tradução . . Acesso em: 10 maio 2024. -
APA
Fahl, J. I., Carelli, M. L. C., Menezes, H. C., Gallo, P. B., & Trivelin, P. C. O. (2001). Gas exchange, growth, yield and beverage quality of Coffea arabica cultivars grafted on to C. canephora and C. congensis, 37, 241-252. -
NLM
Fahl JI, Carelli MLC, Menezes HC, Gallo PB, Trivelin PCO. Gas exchange, growth, yield and beverage quality of Coffea arabica cultivars grafted on to C. canephora and C. congensis. 2001 ;37 241-252.[citado 2024 maio 10 ] -
Vancouver
Fahl JI, Carelli MLC, Menezes HC, Gallo PB, Trivelin PCO. Gas exchange, growth, yield and beverage quality of Coffea arabica cultivars grafted on to C. canephora and C. congensis. 2001 ;37 241-252.[citado 2024 maio 10 ] - Eficiência agronômica da adubação de soqueira de cana-de-açúcar com cloreto de amônio
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