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Influences of intercropping and nitrogen supply on flavonoid exudation in wheat roots
Journal of Plant Nutrition ( IF 2.1 ) Pub Date : 2020-07-15 , DOI: 10.1080/01904167.2020.1793189
Ying-chao Liu 1, 2 , Xin-hua Yin 3 , Yi Zheng 2
Affiliation  

Abstract Soil and hydroponic experiments were carried out to examine the influences of intercropping and nitrogen supply on flavonoid exudation in wheat roots. Both experiments comprising three cropping patterns (wheat intercropped with faba bean, monocropped wheat, and monocropped faba bean) and three N supply levels (deficient, adequate, and excessive) with three replicates in a randomized complete block design. Across two experiments, intercropping increased but N fertilization decreased flavonoids of wheat roots frequently. Intercropping variably increased secretion of naringenin from 0.5 to 1.9 folds (P < 0.5) in wheat roots at all three N levels, but rarely increased secretion of genistein and hesperetin in wheat at the deficient N level. Intercropped wheat secreted more flavonoids than monocropped wheat at its tillering (60th d) and flowering (95th d) stages; after the flowering stage, however, the differences between intercropping and monocropping were not significant at any N level. Secretion of flavonoids in wheat roots decreased with increased N supply. Interspecies and N supply altered the contents and proportions of flavonoids in wheat root exudations under wheat and faba bean intercropping. These results indicate facilitative root–root interactions and provide insight into cereal promote nodule of legume in intercropping system.

中文翻译:

间作和施氮对小麦根系黄酮分泌的影响

摘要 通过土壤和水培试验研究了间作和施氮对小麦根系黄酮类物质渗出的影响。两个试验都包括三种种植模式(小麦与蚕豆间作、单作小麦和单作蚕豆)和三种氮供应水平(不足、充足和过量),在随机完整区组设计中进行了三个重复。在两个实验中,间作增加,但施氮肥经常减少小麦根的黄酮类化合物。在所有三个氮水平下,间作使小麦根中柚皮素的分泌增加了 0.5 到 1.9 倍(P < 0.5),但很少增加在缺氮水平下小麦中染料木黄酮和橙皮素的分泌。间作小麦在分蘖期(第 60 天)和开花期(第 95 天)比单作小麦分泌更多的类黄酮;然而,在开花期之后,间作和单作之间的差异在任何氮水平上都不显着。小麦根系中黄酮类化合物的分泌随着氮供应的增加而减少。种间和氮供应改变了小麦和蚕豆间作下小麦根系分泌物中黄酮类化合物的含量和比例。这些结果表明促进了根 - 根相互作用,并提供了对间作系统中谷物促进豆类根瘤的深入了解。种间和氮供应改变了小麦和蚕豆间作下小麦根系分泌物中黄酮类化合物的含量和比例。这些结果表明促进了根-根相互作用,并提供了对间作系统中谷物促进豆类根瘤的深入了解。种间和氮供应改变了小麦和蚕豆间作下小麦根系分泌物中黄酮类化合物的含量和比例。这些结果表明促进了根-根相互作用,并提供了对间作系统中谷物促进豆类根瘤的深入了解。
更新日期:2020-07-15
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