Inference of allelopathy and autotoxicity to varietal resistance of asparagus ('Asparagus officinalis' L.)
Inference of allelopathy and autotoxicity to varietal resistance of asparagus ('Asparagus officinalis' L.)
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芦笋品种抗性的化感作用和自毒作用的推断（Asparagus officinalis L.）
DOI：
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发表时间：
2014
影响因子：
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通讯作者：
Sadahiro Yamamoto
中科院分区：
文献类型：
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作者：
R. Yeasmin;K. Nakamatsu;H. Matsumoto;S. Motoki;E. Nishihara;Sadahiro Yamamoto
在实验室条件下评估了品种对化感作用和自毒作用的抗性对生长、养分吸收和化感化学特性的影响。两个芦笋品种；分别来自欧洲和美国的UC157（U）和Gijnlim（G）在连续重植系统中以不同轮作方式栽培。轮换组合包括：第一次和第二次补植分别为 UG、GU、GG、UU 和 GUG、GGU、GUU、UGU、UUG、UGG、GGG、UUU。对照种植是每个品种的第一次种植。研究了潜在化感物质对重植培养中两个品种生长和养分吸收的影响。通过高效液相色谱法测定其含量，并在重新种植期间在琼脂培养基中评估其植物毒性。鉴定出的化感物质是草酸、琥珀酸和酒石酸。与 Gijnlim 相比，UC157 产生了更高浓度的总化感物质。与对照（首次种植 UC157）相比，第二次重新种植 UC157（UUU）时根和芽的生长分别被抑制高达 77% 和 73%。生长抑制与营养吸收抑制相关；磷（P）吸收是氮（N）、钾（K）、钙（Ca）和镁（Mg）中最受抑制的养分。这两个品种在生长、养分吸收和化感化学特征方面表现出显着差异（p < 0.05）。在两次后续重新种植后，UC157 显示出比 Gijnlim 更强的品种化感作用和自毒活性。总之，重新种植时需要选择合适的芦笋品种和品种轮作，以尽量减少品种化感作用和自毒作用的负面影响。
The influence of varietal resistance to allelopathy and autotoxicity for growth, nutrient uptake and allelochemical characteristics were assessed under laboratory conditions. Two asparagus varieties; UC157 (U) and Gijnlim (G) from Europe and USA, respectively were cultivated in different rotational patterns in a continuous replanting system. Rotational combinations consisted of: UG, GU, GG, UU and GUG, GGU, GUU, UGU, UUG, UGG, GGG, UUU for the first and second replantings, respectively. The control planting was the first planting of each variety. The effects of potential allelochemicals on the growth and nutrient uptake for the two varieties in replant culture were investigated. Their contents were determined by high-performance liquid chromatography, and their phytotoxicity was assessed in agar medium during the replanting time. Identified allelochemicals were oxalic, succinic and tartaric acids. UC157 produced higher concentrations of total allelochemicals compared to Gijnlim. Root and shoot growth were inhibited by up to 77 and 73 %, respectively in the second replanting of UC157 (UUU) compared to the control (first planting of UC157). Growth inhibition was correlated with nutrient uptake inhibition; phosphorus (P) uptake was the most inhibited nutrient among nitrogen (N), potassium (K), calcium (Ca), and magnesium (Mg). The two varieties exhibited significant (p< 0.05) differences in growth, nutrient uptake and allelochemical characteristics. UC157 showed more varietal allelopathic and autotoxic activity than Gijnlim after two subsequent replanting. In Summary, selection of suitable asparagus varieties and varietal rotations are necessary in replantings in order to minimize the negative impacts of varietal allelopathy and autotoxicity.