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当前位置: 首页 > 文章 > NaCl胁迫下中国南瓜杂交种和黑籽南瓜植株离子吸收与积累特性研究 植物营养与肥料学报 2008,14 (3) 546-551
Position: Home > Articles > Characteristics of inorganic ion uptake and accumulation in plant organs of Cucurbita moschata Duch.and C.ficifolia Bouche.under NaCl stress Journal of Plant Nutrition and Fertilizers 2008,14 (3) 546-551

NaCl胁迫下中国南瓜杂交种和黑籽南瓜植株离子吸收与积累特性研究

作  者：
周俊国;朱月林;杨立飞;刘正鲁;张古文
单  位：
南京农业大学园艺学院
关键词：
中国南瓜;黑籽南瓜;NaCl胁迫;无机离子;吸收;积累
摘  要：
营养液栽培条件下,在成株期以80mmol/L NaCl胁迫中国南瓜360-3×112-2 F1和黑籽南瓜植株,10d后,测定了植株的生长量和不同器官中Na~+、K~+、Ca~(2+)、Mg~(2+)的含量。结果表明,NaCl胁迫下两种材料的生长受到明显抑制,360-3×112-2杂交种的生长抑制比黑籽南瓜植株较轻。NaCl胁迫后两种南瓜植株体内Na~+含量升高,360-3×112-2杂交种的Na~+主要累积在根部,黑籽南瓜主要积累在茎中;K~+、Ca~(2+)、Mg~(2+)的含量在植株体内呈下降的趋势,但360-3×112-2杂交种的上位叶中的含量却上升。NaCl胁迫下,因Na~+的积累抑制了K~+的吸收,植株各器官的K~+/Na~+普遍降低,但黑籽南瓜比360-3×112-2杂交种的K~+/Na~+下降明显。这些结果说明,两种南瓜受到盐胁迫后Na~+的主要积累器官不同,致使地上部各器官有不同的K~+、Ca~(2+)、Mg~(2+)吸收和积累特性,K~+/Na~+降低幅度也不同,从而影响了植株的生长,产生了耐盐性的差异。360-3×112-2杂交种耐盐性比黑籽南瓜强,可望作为耐盐砧木在瓜类生产上使用。
译  名：
Characteristics of inorganic ion uptake and accumulation in plant organs of Cucurbita moschata Duch.and C.ficifolia Bouche.under NaCl stress
作  者：
ZHOU Jun-guo~(1,2) ZHU Yue-lin~(1*) YANG Li-fei~1 LIU Zheng-lu~1 ZHANG Gu-wen~1 1 College of Horticulture,Nanjing Agricultural University,Nanjing 210095,China; 2 Horticultural Department of Henan Institute of Science and Technology,Xinxiang 453003,China
关键词：
Cucurbita moschata Duch.;;Cucurbita ficifolia Bouche.;;NaCl stress;;inorganic ion;;uptake;;accumulation
摘  要：
360-3×112-2 was proved to be a higher salt tolerant hybrid of Cucurbita moschata Duch.in our previous work.To compare its salt tolerance with C.ficifolia Bouche.,a widely used rootstock in cucurbits vegetable produc- tion,both of them were cultured in nutrient solution added with 0 mmol/L or 80 mmol/L NaCl in adult plant period.Af- ter 10 days,the growth traits and the contents of Na~+ ,K~+ ,Ca~(2+) and Mg~(2+) in six organs including root(R),stem(S), petiole(P),upper leaf(UL),middle leaf(ML)and lower leaf(LL)of all plants were determined.Results showed that growth inhibition of two tested plants was obvious under NaCl stress for 10 days,growth of 360-3×112-2 F1 plants was less inhibited than that of C.ficifolia Bouche.Na~+ contents in six organs of two tested materials were all increased, Na~+ contents of 360-3×112-2 hybrid mainly accumulated in roots,while C.ficifolia Bouche.in stems.K~+ ,Ca~(2+) and Mg~(2+) contents generally decreased in plant,however,increased in UL of 360-3×112-2 hybrid.Although K~+/ Na~+ values in all organs were decreased under NaCl stress,360-3×112-2 hybrid decreased less than C.ficifolia Bouche.Therefore,difference in organs accumulating high Na~+ contents,and difference in K~+ ,Ca~(2+),Mg~(2+) contents and K~+/Na~+ decrease range in shoot were the main reasons for the differences of salt tolerance between the two tested materials under NaCl stress after 10 days.The results also suggest that 360-3×112-2 hybrid has higher salt tolerance than C.ficifolia Bouche.,and can be used as salt tolerant rootstock in cucurbits vegetable production.

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