盐碱胁迫下阿拉善荒漠区2种沙生灌木幼苗体内脯氨酸变化规律的研究  

Changes of Proline in Seedlings of Two Different Desert Shrubs under Saline-alkali Stress in Desert Area of Alagxa

作　　者：张斌武 谢菲 桂翔 杨阳 刘俊良 海莲 ZHANG Bin-wu;XIE Fei;GUI Xiang;YANG Yang;LIU Jun-liang;HAI Lian(Forest Seedling Station of Alagxa League,Inner Mongolia,Bayanhot 750306,China)

机构地区：[1]阿拉善盟林木种苗站,内蒙古巴彦浩特750306

出　　处：《内蒙古林业科技》2018年第4期29-34,49,共7页Journal of Inner Mongolia Forestry Science and Technology

基　　金：内蒙古林业厅科技支撑项目"黑果枸杞良种选育及繁殖技术研究"资助

摘　　要：以采集自阿拉善荒漠的2种旱生灌木黑果枸杞和唐古特白刺为材料,研究不同浓度(0、50、100、200、300 mmol/L) Na Cl、KCl、Na2CO3和Na HCO3处理,对幼苗叶片中脯氨酸积累的影响。结果表明:观测期内,不同浓度、不同类型的盐碱胁迫均显著增加了脯氨酸在黑果枸杞和唐古特白刺幼苗叶片中的积累。相同胁迫处理下,黑果枸杞幼苗中脯氨酸的累积水平高于唐古特白刺。Seeds of two different plants,Lycium ruthenicum and Nitraria tangutorum,were sampled from Alagxa desert to explore the change of proline content in leaves of their seedlings under different saline-alkali stresses.NaCl,KCl,Na 2CO 3 and NaHCO 3 solutions,each in four different gradient concentrations(50,100,200,300 mmol/L),were supplemented to pots containing seedlings of one month old.The results show that proline accumulation in seedlings of Lycium ruthenicum and Nitraria tangutorum was significantly enhanced after saline-alkali stress with different concentrations and types.The seedlings of Lycium ruthenicum can accumulate more proline than the ones of Nitraria tangutorum under the same stress condition.

关 键 词：盐碱胁迫 脯氨酸 黑果枸杞 唐古特白刺 

分 类 号：S718.3[农业科学—林学]