Chlorophyll Fluorescence Parameters and Drought Tolerance in a Mapping Population of Winter Bread Wheat in the Highlands of Irand
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2011-03-12
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ISI Journal
Impact factor: 1.481 (Year: 2011)
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Mozaffar Roostaei, S. A. Mohammadi, Ahmed Amri, E. Majidi, Nachit Miloudi, Reza Haghparast. (12/3/2011). Chlorophyll Fluorescence Parameters and Drought Tolerance in a Mapping Population of Winter Bread Wheat in the Highlands of Irand. Russian Journal of Plant Physiology, 58, pp. 351-358.
Abstract
The usefulness of fluorescence parameters as drought tolerance selection criteria for winter bread wheat in the highlands of Iran was studied. A population of 142 recombinant inbred lines, derived from a cross between two common wheat varieties, Azar2 (winter type) and 87Zhong291 (facultative type), was used to analyze the correlation between grain yield and chlorophyll fluorescence parameters at the grain-filling stage under drought stress and supplementary irrigation conditions during 2006-2007 and 2007-2008 seasons at Maragheh experiment station of the Dryland Agricultural Research Institute (DARI) using a RCBD with three replications. The results showed significant differences among the lines in the grain yield and all fluorescence parameters under rainfed and irrigation conditions. The values of chlorophyll content, F-0, F-m, F-v, F-v/F-m, LWP, YPEC, NPQ, and PI in the drought-tolerant genotypes were significantly higher than those in drought-sensitive genotypes under drought stress. Significant differences were observed between slope coefficients under drought, but not under supplementary irrigation conditions except NPQ (P = 5%). It was concluded that chlorophyll content, F-0, F-m, F-v, F-v/F-m, LWP, YPEC, NPQ, and PI could be used as additional indicators in screening wheat germplasm for drought tolerance.
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Amri, Ahmed https://orcid.org/0000-0003-0997-0276