| 张金燕1，2，孙雪婷1，2，龙光强1，张广辉1，孟珍贵1，2，李龙根1，2，杨生超1，陈军文1，2.根系残留对三七植株生长的影响[J].广东农业科学,2017,44(6):27-38 |
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根系残留对三七植株生长的影响 |
| Influence of residual roots on growth of Panax notoginseng |
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| DOI：10.16768/j.issn.1004-874X.2017.06.005 |
| 中文关键词: 三七 残根 植株形态 自毒作用 化感效应 |
| 英文关键词: Panax notoginseng residual root plant morphology autotoxicity allelopathic effect |
| 基金项目:国家自然科学基金（81360609）；云南省中青年学术技术带头人后备人才项目（2014HB011） |
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| 中文摘要: |
| 为研究三七〔Panax notoginseng（ Burk） F.H.Chen〕残根对2 年生三七生长的影响，在盆栽和
水培两种栽培模式下，按不同比例添加三七须根粉，并定期观测其生长及抗氧化酶活性变化。结果发现，
在盆栽处理30 d 和水培条件下处理10 d，三七须根数随着三七须根粉添加量的增加而减少。盆栽和水培条
件下，不添加三七须根粉和高比例添加三七须根粉处理下，三七须根和叶片中的POD 活性相对较低；盆栽
三七根系中SOD 活性随着三七根系粉添加量的增加而降低，而水培条件下则恰好相反。盆栽和水培条件
下，分别在三七须根粉添加量大于0.5 g/kg 和0.1 g/L 时，三七根系活力都有不同程度的升高，但根系活力
随着试验处理天数的增加而呈下降趋势。三七采收过程中残留在土壤中的须根腐解释放的化学物质可能
是导致三七自毒作用的潜在因素。 |
| 英文摘要: |
| In order to analyze of the effects of residual roots decomposed on growth of two-year-old Panax
notoginseng，the fibrous roots were added in the pot experiment and hydroponic experiment. The morphological
index and enzyme activity were measured timely. The results showed that the number of fibrous root decreased with
the increase of residual root addition in potted treatment for 30 days and hydroponic conditions for 10 days. The
POD activity was relatively lower in fibrous roots and leaves of P. notoginseng which grew under treatments of pot
experiment and hydroponic experiment without any addition or high proportion to addition of powdery fibrous roots.
The SOD activity in fibrous roots of P. notoginseng which grew under pot condition decreased with the increase
of additive amount of powdery fibrous roots，however，the contrary was found in hydroponic experiment. The root
activity increased in various degrees under the condition of additive amount of powdery fibrous roots greater than 0.5
g/ kg in pot experiment and 1 g/10 L in hydroponic experiment. But the root activity decreased with the increase of
test processing days in all treatments. The results suggested that the release of chemical substances of roots left in
soil in the process of harvesting may be another factor leading to autotoxicity of P. notoginseng. |
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