Tan, Weiwei

Zhang, Yuqin

Zhang, Yuxia

English

University of Kentucky

University of Kentucky UKnowledge International Grassland Congress Proceedings 21st International Grassland Congress / 8th International Rangeland Congress Effect of Saline‐Alkali Stress on Physiological Characteristics of Grain Amaranth Seedling Yuxia Zhang Inner Mongolia University for Nationalities, China Yuqin Zhang Inner Mongolia University for Nationalities, China Weiwei Tan Inner Mongolia University for Nationalities, China Follow this and additional works at: https://uknowledge.uky.edu/igc  Part of the Plant Sciences Commons, and the Soil Science Commons This document is available at https://uknowledge.uky.edu/igc/21/1-4/5 The 21st International Grassland Congress / 8th International Rangeland Congress took place in Hohhot, China from June 29 through July 5, 2008. Proceedings edited by Organizing Committee of 2008 IGC/IRC Conference Published by Guangdong People's Publishing House This Event is brought to you for free and open access by the Plant and Soil Sciences at UKnowledge. It has been accepted for inclusion in International Grassland Congress Proceedings by an authorized administrator of UKnowledge. For more information, please contact UKnowledge@lsv.uky.edu. 瞯 ]154　 瞯 　 Multifunctional Grasslands in a Changing World 　 Volume Ⅰ 　Grasslands/Rangelands Resources and Ecology ——— Ecology of Grasslands/RangelandsEffect of saline‐alkali stress on physiological characteristics of grain amaranth seedlingZhang Yux ia ,Zhang Yuqin Tan WeiweiInner Mongolia University f or Nationalities , Tongliao , 028042 , China . E‐mail : yux iaZhang＠ 163 .comKey words : grain amaranth , variety ,seedling ,saline‐alkali stress ,physiological characteristicsIntroduction The stage of seed germination is a sensitive period to salt . According to the actual situation of drought and saline‐alkali areas in north , the research treated amaranth seed with mixing salt solutions to discuss that injury and mechanism ofadaptation in relation to saline‐alkali stress for grain amaranth , and provide theoretical basises to cultivation and selection ofseed resisting saline‐alkali stress in drought and saline‐alkali areas of north .Material and methods Seedling of red amaranth K１１２ ,red amaranth R１０４ and wild amaranth was cultured in outside on June of２００７ ; seedlings were watered with Hoagland solution every three days , other time was used water to spread . When seedlingshad five‐leaves year old , they was respectively treated with four different concentrations by combining NaCl , Na２ SO４ ,NaHCO３ and Na２ CO３ with １ :９ :９ :１ of substance ratio , Per treatment concentration repeated ３ times ; They was randomlyarranged . After １５ days treating ,we started to determine physiological indexes .Results With increase of treatment concentration , the relative conductivity in red amaranth K１１２ and R１０４ a little increased ,but that of wild amaranth significantly increased under moderate and high concentration of treatment ; From the table１ we alsocan see clearly that chlorophyll content delined with increasing concentration of treatment , and that in red amaranth R１０４ andwild amaranth which had high content of chlorophyll itself ex tremely decreased , it illustrated that saline‐alkali stress destroyedchlorophyll in wild amaranth and red amaranth R１０４ .Table 1 E f f ect o f saline‐alkali stress on physiological characteristics o f amaranth seedling .variety T reatment( mol/ L ) RelativeConductivity ( ％ ) Chlorophyll( mg / g ) Proline ( ug /g ) Soluble Sugar( mg / g )CK １８ 噜.８１bA １ 滗.４０aA ３４２ 妹.５０bB ２１５ F.０７bcABRed amaranth ０ M.１ ２２ 噜.０５abA １ 滗.３５abA ３７２ 妹.９１bB １８７ F.８４cBK１１２ 倐０ M.２ ２３ 噜.９４aA １ 滗.３４abA ５６２ 妹.５０aA ２８４ F.０６abAB０ M.３ ２２ 噜.５５abA １ 滗.２５bA ３２２ 妹.９１bB ３１９ F.１５aACK ２２ 噜.０４aA ２ 滗.０８aA ３６３ 妹.３３bB １２０ F.７１dCRed amaranth ０ M.１ ２４ 噜.３５aA １ 滗.６２bB ３８３ 妹.３３bB １７０ F.３８cBCR１０４ }０ M.２ ２１ 噜.１７aA １ 滗.３９cB ５４１ 妹.６６aA ２１３ F.３１bB０ M.３ ２１ 噜.６５aA １ 滗.１２dC ３５２ 妹.０８bB ３０４ F.９４aACK ２０ 噜.０９bB ２ 滗.５９aA ３３７ 妹.５０bA ８５  .３８bB０ M.１ １９ 噜.３９bB １ 滗.９２bB ３５０ 妹.００abA １３６ F.０３bABWild amaranth ０ M.２ ２９ 噜.６４aA １ 滗.８４bB ４１０ 妹.４１aA １３９ F.２５bAB０ M.３ ２５ 噜.２３aAB １ 滗.３６cC ２９５ 妹.８３abA ２６８ F.４５aAAccording to the figures in Table １ ,we can see clearly that proline content of three varieties of grain amaranth first increasedand then decreased with increasing treatment concentration and significantly increased on condition of moderate concentration ;Meanwhile this table also shown that soluble sugar content of three grain amaranth increased with increase of treatmentconcentration ,and significantly increased under high content of treatment . Moreover their content in red amaranth K１１２ andR１０４ were more than in wild amaranth .Conclusions The ability of red amaranth R１０４ and K１１２ in relation to resist saline‐alkali stress were stronger than that of wildamaranth , so seedling of red amaranth R１０４ and K１１２ could normally grow in saline‐alkali areas where wild amaranth wasdistributed . Overall , proline and soluble sugar were osmotic substance of grain amaranth to adjust saline‐alkali stress .ReferenceErdei L . ,Taleisnik E . ,Changes in water relation parameters under osmotic and salt stress in maize and sorghum .[ J ] PlantPhysiol ,１９９３ ,８９ :３８１‐３８７ .

Effect of Saline‐Alkali Stress on Physiological Characteristics of Grain Amaranth Seedling

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Effect of Saline‐Alkali Stress on Physiological Characteristics of Grain Amaranth Seedling

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