邝炎华 刘琼英. 稀土元素在甘蔗体内的分配 残留累积及其对甘蔗抗逆性能的影响[J]. 华南农业大学学报, 1992, (2): 47-54.
    引用本文: 邝炎华 刘琼英. 稀土元素在甘蔗体内的分配 残留累积及其对甘蔗抗逆性能的影响[J]. 华南农业大学学报, 1992, (2): 47-54.
    Kuang Yanhua Liu Qiongying Xu Shengjie Deng Zhouhuo. STUDIES ON THE DISTRIBUTION, ACCUMULATION AND RESIDUE OF RAREEARTH ELEMENTS AND ITS EFFECT ON IMPROVINO THE STRESSRESISTANCE IN SUGARCANE (Sacharum officinarum L.)[J]. Journal of South China Agricultural University, 1992, (2): 47-54.
    Citation: Kuang Yanhua Liu Qiongying Xu Shengjie Deng Zhouhuo. STUDIES ON THE DISTRIBUTION, ACCUMULATION AND RESIDUE OF RAREEARTH ELEMENTS AND ITS EFFECT ON IMPROVINO THE STRESSRESISTANCE IN SUGARCANE (Sacharum officinarum L.)[J]. Journal of South China Agricultural University, 1992, (2): 47-54.

    稀土元素在甘蔗体内的分配 残留累积及其对甘蔗抗逆性能的影响

    STUDIES ON THE DISTRIBUTION, ACCUMULATION AND RESIDUE OF RAREEARTH ELEMENTS AND ITS EFFECT ON IMPROVINO THE STRESSRESISTANCE IN SUGARCANE (Sacharum officinarum L.)

    • 摘要: 本文报道应用放射性核素铈(~(141)Ce)标记硝酸铈~(141)Ce(NO_2)_2),利用ICP-AES法及植物生理生化分析技术,研究测定了稀土元素(REE)在甘蔗体内各器官的吸收、分配、残留累积和REE处理对甘蔗叶片细胞膜透性、伤流量,叶片自由水和束缚水含量以及游离脯氨酸含量等抗性生理指标的影响。甘蔗叶面喷施REE铈后的第1~7天,根、茎、叶器官吸收累积铈量是随着时间的增加而增加,第7天达吸收最大值,随后开始缓慢下降。甘蔗植株对REE铈的吸收率仅为0.836%~2.165%。REE铈在甘蔗叶片有较多的分配,其次为茎,最小为根部;REE在甘蔗叶片有较多的残留累积量,茎(甘蔗渣,下同)次之,根部又次之,蔗糖汁中最小,100~900ppm浓度范围的REE处理,甘蔗叶、茎、根及蔗糖汁中的REE残留累积量是随着REE处理浓度的增加而增加。当处理浓度在900ppm以上时(900~1 500ppm),REE在蔗糖汁中的残留量趋于平衡饱和状态。一定浓度的REE处理甘蔗可显著地提高甘蔗伤流量,降低甘蔗叶片细胞膜透性,减少叶片中自由水含量,提高束缚水和叶片游离脯氨酸含量,从而提高甘蔗的抗逆性能和单位面积产量。

       

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