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首页> 外文期刊>Korean Journal of Crop Science >Effects of salt treatment on yield and physiological characteristics of flag leaf at heading stage in winter barley
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Effects of salt treatment on yield and physiological characteristics of flag leaf at heading stage in winter barley

机译：盐处理对冬小麦抽穗期剑叶产量和生理特性的影响

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摘要

A research was conducted in Korea Republic to obtain data on salt injury and different responses among cultivars in winter barley (Hordeum vulgare). 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 injurious effect on barley straw dry weight and 1000-seed weight than did MgSO4. 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. Proline content in salt-treated barley was _10-fold higher compared to the control. Based on the yield components and physiological traits of the flag leaf, tolerance to salt injury was the greatest in cultivar Baegdong, followed by cultivars Dongbori 1, Mogpo 55, and Gangbori. The results suggest that salt-stressed barley at the reproductive stage had higher free proline content, and that special management in this stage must be considered because salt stress at the heading stage affect flag leaf growth as well as yield components harmfully.
机译：在大韩民国进行了一项研究，以获取有关冬季大麦（Hordeum vulgare）的盐害和不同品种不同反应的数据。盐不影响产量组成，包括穗数，茎长，单穗粒数和籽粒产量，而随着盐浓度从60 mM增加到180 mM，茎干重和千粒重明显降低。与MgSO4相比，NaCl对大麦秸秆干重和1000粒重的伤害较小。当用两种盐处理时，旗叶中的叶绿素含量和相对节律性都降低了，而盐处理过的叶中的游离脯氨酸则增加了。与对照相比，盐处理的大麦中脯氨酸的含量高_10倍。根据旗叶的产量组成和生理特性，Baegdong品种对盐害的耐受性最大，其次是Dongbori 1，Mogpo 55和Gangbori。结果表明，盐胁迫的大麦在生殖阶段具有较高的游离脯氨酸含量，并且必须考虑在此阶段进行特殊管理，因为抽穗期的盐胁迫会影响旗叶的生长以及对产量构成有害影响。

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