2012•Journal of Zhejiang A & F UniversityRequires access

Chlorophyll fluorescence parameters under drought stress in three plants of Lonicera

Huang Jian-rong

Abstract

Changes in chlorophyll fluorescence parameters under drought stress for three honeysuckle(Lonicera japonica 'Chinensis',Lonicera × tellmanniana and Lonicera × heckrottii) were studied.Results showed that minimal fluorescence(F0) and the non-photochemical quenching coefficient(qN) increased with the number of drought stress days;whereas maximal fluorescence(Fm),potential photochemical efficiency of PSⅡ(Fv /F0),maximal photochemical efficiency of PSⅡ(Fv /Fm),effective quantum yield of PSⅡ photochemistry(y),apparent electron transport rate(ETR),and the photochemical quenching coefficient(qP) gradually decreased.Chlorophyll fluorescence parameters under drought stress varied in the order:L.japonica 'Chinensis' L.× tellmanniana L.× heckrottii.Thus,drought resistance was also in this order.[Ch,4 fig.21 ref.]

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Key concepts: Chlorophyll fluorescence, Quenching (fluorescence), Fluorescence, Japonica, Chlorophyll, Quantum yield, Photochemistry, Honeysuckle