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ARS Home » Pacific West Area » Logan, Utah » Forage and Range Research » Research » Publications at this Location » Publication #170171
Title: GAS EXCHANGES AND CHLOROPHYLL FLUORESCENCE PARAMETERS OF FOURTEEN BARLEY LINES IN RESPONSE TO SALINITY

Author
item Monaco, Thomas
item JIANG, QINGZHEN - UTAH STATE UNIV.
item ROCHE, DOMINIQUE - UTAH STATE UNIV.
item DURHAM, SUSAN - UTAH STATE UNIV.

Submitted to: Proceedings International Barley Genetics Symposium
Publication Type: Proceedings
Publication Acceptance Date: 6/20/2004
Publication Date: 6/20/2004
Citation: Monaco, T.A., Jiang, Q., Roche, D., Durham, S. 2004. Gas exchanges and chlorophyll fluorescence parameters of fourteen barley lines in response to salinity. Proceedings International Barley Genetics Symposium.

Interpretive Summary:

Technical Abstract: Barley is one of the few economically significant crops relatively tolerant to salinity. However, there are also important differences in salinity tolerance between germplasm lines/varieties of barley. It is not clear how do the most tolerant lines physiologically adjust to the salt stress. For a set of fourteen barley lines/varieties we measured simultaneously leaf gas exchanges and chlorophyll fluorescence parameters in control plants and plants grown in saline conditions. Five days after emergence, the salinity treatment was conducted with soaking of individual plants in a saline solution of NaC1 and CaC12 (EC: 30dS m-1). Measurements of gas exchange and chlorophyll fluorescence parameters were conducted on attached leaves at the fourth-fifth leaf stage. We present data on effects of salinity on net photosynthesis, stomatal conductance and fluorescence parameters for the set of barley lines. We will discuss the value of measurement of chlorophyll fluorescence on attached leaves in lighted conditions as a possible tool for salinity tolerance screening of genotypes.