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Effects of Salt Treatment on Yield and Physiological Characteristics of Flag Leaf at Heading Stage in Winter Barley  

최원열 (전남대학교 농업생명과학대학 농업과학기술연구소)
김영민 (전남대학교 농업생명과학대학 농업과학기술연구소)
박종환 (전남대학교 농업생명과학대학 농업과학기술연구소)
Publication Information
KOREAN JOURNAL OF CROP SCIENCE / v.47, no.6, 2002 , pp. 409-412 More about this Journal
Abstract
This research was conducted to obtain the fundamental data on salt injury and different responses among cultivars in winter barley (Hordeum vulgare L.). Salts did not affect yield components including number of panicles, stem length, grain number per ear and grain yield while reduced stem dry weight and thousand seed weight significantly with increasing concentrations of salt from 60 to 180 mM. NaCl had less injury effect on barley straw dry weight and thousand seed weight than did $MgSO_4$. Chlorophyll content and relative turgidity in flag leaf were reduced when treated with both salts, while free proline in the salt-treated leaf was increased. Content of proline in salt-treated barley was about 10 folds compared to the control. Based on yield components and physiological traits of flag leaf, the tolerance to salt injury was the greatest in Baegdong, followed by Dongbori#1, Mogpo#55, and Gangbori. The results suggested that salt- stressed barley at reproductive stage had higher free proline content, and that special management in this stage must be considered because salt stress at heading stage affect flag leaf growth as well as yield components Harmfully.
Keywords
barley; heading; cultivars; salt.;
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