施氮水平对实生桃树可溶性总糖、淀粉含量及根组织构造的影响 |
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引用本文: | 潘春香,肖艳辉,新居直祐,中尾義則. 施氮水平对实生桃树可溶性总糖、淀粉含量及根组织构造的影响[J]. 农业科学与技术, 2011, 0(12): 1861-1863 |
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作者姓名: | 潘春香 肖艳辉 新居直祐 中尾義則 |
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作者单位: | 韶关学院英东农业科学与工程学院;日本名城大学农学部 |
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摘 要: | [目的]为桃栽培生产提供理论依据。[方法]试验以3年生实生桃树为材料,NH4NO3为试验氮肥,设0、3、6g/盆三个施氮水平,探讨了不同施氮水平对实生桃树可溶性总糖和淀粉以及根内部组织构造的影响。[结果]根和叶片的可溶性糖含量随着施氮水平的提高呈增加趋势,以6g/盆最高,与对照及3g/盆区差异均达到0.05显著水平;淀粉含量却呈相反趋势,随着施氮水平的提高而呈下降趋势,以6g/盆含量最低,与对照达0.01显著水平。与对照、3g/盆处理相比,6g/盆根内部组织构造表现为维管中柱较大,维管束发达,皮层薄壁细胞间隙小,细胞圆润、饱满,细胞壁光滑,发育较好。[结论]适宜的施氮水平可促进桃树可溶性总糖的累积和根内部组织的发育。
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关 键 词: | 桃 施氮水平 可溶性糖 淀粉 根内部组织构造 |
Effects of Different Nitrogen Fertilizer Rates on Soluble Sugar,Starch and Root Tissue Structure of the Peach Trees |
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Affiliation: | PAN Chun-xiang1,XIAO Yan-hui1,Naosuke Nii2,Yoshinori Nakao2 1.College of Yingdong Bioengineering,Shaoguan University,Shaoguan 512005;2.College of Agriculture,Japan Meijo University,Nagoya 468-8502 |
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Abstract: | [Objective] The research aimed to provide theoretical basis for the cultivation and production of peach.[Method] The three-year-old seedling peach tree was used as the materials,and NH4NO3 was used as the experimental nitrogen fertilizer.Three nitrogen levels,0,3,6 g per pot respectively were set to study the effects of different nitrogen fertilizer on the contents of soluble sugar,starch and internal structure of the root of the peaches.[Result] The contents of soluble sugar of roots and leaves increased with the increase of nitrogen fertilizer level,and the level of 6 g per pot was the highest,which showed extreme differences between the level of 3 g per pot and the control.However,starch contents showed opposite results,which decreased as the level of nitrogen fertilizer increased.Compared with the 3 g per pot level of nitrogen fertilizer and the control,the internal structure of root applied with nitrogen fertilizer of 6 g per pot level had larger fibrovascularcylinder,advanced vascular bundle,small-spaced thin-walled cells,smooth and full cells with smooth cell wall.[Conclusion]Appropriate nitrogen levels can accelerate the accumulation of soluble sugar and the growth of root tissue structure. |
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Keywords: | Peach Nitrogen fertilizer rate Soluble sugar Starch Root tissue structure |
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