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Performance index as a sensitive indicator of water stress in Triticum aestivum L

Zivcak, M.,Slovenska Akademia Vied, Bratislava (Slovak Republic). Katedra Fyziologie Rostlin ; Brestic, M.,Slovenska Akademia Vied, Bratislava (Slovak Republic). Katedra Fyziologie Rostlin ; Olsovska, K.,Slovenska Akademia Vied, Bratislava (Slovak Republic). Katedra Fyziologie Rostlin ; Slamka, P.,Slovenska Akademia Vied, Bratislava (Slovak Republic). Katedra Fyziologie Rostlin

Plant, soil and environment, 2008-04, Vol.54 (4), p.133-139 [Periódico revisado por pares]

Czech Academy of Agricultural Sciences

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Título:
Performance index as a sensitive indicator of water stress in Triticum aestivum L
Autor: Zivcak, M.,Slovenska Akademia Vied, Bratislava (Slovak Republic). Katedra Fyziologie Rostlin ; Brestic, M.,Slovenska Akademia Vied, Bratislava (Slovak Republic). Katedra Fyziologie Rostlin ; Olsovska, K.,Slovenska Akademia Vied, Bratislava (Slovak Republic). Katedra Fyziologie Rostlin ; Slamka, P.,Slovenska Akademia Vied, Bratislava (Slovak Republic). Katedra Fyziologie Rostlin
Assuntos: AIR TEMPERATURE ; BLE ; chlorophyll a fluorescence ; CHLOROPHYLLE ; CHLOROPHYLLS ; CLOROFILAS ; DEHYDRATION ; DESHIDRATACION ; DESHYDRATATION ; drought ; DROUGHT RESISTANCE ; DROUGHT STRESS ; drought tolerance ; ESTRES DE SEQUIA ; FEUILLE ; FLUORESCENCE ; FLUORESCENCIA ; FOTOSINTESIS ; FOTOSISTEMAS ; GENOTIPOS ; GENOTYPE ; GENOTYPES ; HOJAS ; http://www.fao.org/aos/agrovoc#c_10935 ; http://www.fao.org/aos/agrovoc#c_1577 ; http://www.fao.org/aos/agrovoc#c_2162 ; http://www.fao.org/aos/agrovoc#c_230 ; http://www.fao.org/aos/agrovoc#c_2392 ; http://www.fao.org/aos/agrovoc#c_24993 ; http://www.fao.org/aos/agrovoc#c_3225 ; http://www.fao.org/aos/agrovoc#c_33523 ; http://www.fao.org/aos/agrovoc#c_3689 ; http://www.fao.org/aos/agrovoc#c_4243 ; http://www.fao.org/aos/agrovoc#c_5812 ; http://www.fao.org/aos/agrovoc#c_7951 ; http://www.fao.org/aos/agrovoc#c_8157 ; http://www.fao.org/aos/agrovoc#c_8373 ; HUMEDAD ; HUMIDITE ; HUMIDITY ; LEAVES ; PHOTOSYNTHESE ; PHOTOSYNTHESIS ; photosystem ii ; PHOTOSYSTEME ; PHOTOSYSTEMS ; RESISTANCE A LA SECHERESSE ; RESISTENCIA A LA SEQUIA ; STRESS DU A LA SECHERESSE ; TEMPERATURA DEL AIRE ; TEMPERATURE DE L'AIR ; TRIGO ; TRITICUM AESTIVUM ; triticum aestivum l ; VARIEDADES ; VARIETE ; VARIETIES ; WHEATS
É parte de: Plant, soil and environment, 2008-04, Vol.54 (4), p.133-139
Notas: http://journals.uzpi.cz:8050/uniqueFiles/01163.pdf
2009000414
H50
Descrição: Polyphasic chlorophyll a fluorescence represents a promising tool for detection of plant tolerance to various environmental stresses. In pot vegetation experiments, plants of seven winter wheat varieties were screened for their drought tolerance. The drought stress was initiated in plants by withholding water at the beginning of anthesis. While water content was measured continuously as relative water content (RWC), fast chlorophyll a fluorescence kinetics was measured and analysed on dehydrating intact leaves by the JIP-test (analysis of O-J-I-P fluorescence transient). Maximum quantum efficiency of PS II photochemistry (FV/FM) parameter was almost unaffected by dehydration until the severe water stress occurred. In contrast to this a continuous decrease of performance index (PIabs) parameter was observed from the very beginning of dehydration following the decrease of RWC. Statistically significant differences were also found in the PIabs parameter among all tested varieties. The results show that PIabs may serve as an index of plant/variety vitality and/or sensitivity to water stress reflecting their different drought tolerance.
Editor: Czech Academy of Agricultural Sciences
Idioma: Inglês

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Performance index as a sensitive indicator of water stress in Triticum aestivum L

Czech Academy of Agricultural Sciences

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