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CHINESE JOURNAL OF OIL CROP SCIENCES ›› 2020, Vol. 42 ›› Issue (6): 978-.doi: 10.19802/j.issn.1007-9084.2019205

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Effects of single-seed sowing on phenolic acid content and enzyme activity in rhizosphere soil of peanut

  

  1. 1. Biotechnology Research Center, Shandong Academy of Agricultural Sciences, Jinan 250100,China; 2. College of Agronomy, Hunan Agricultural University, Changsha 410128,China; 3. Institute of Agricultural Resources and Envi⁃ronment, Shandong Academy of Agricultural Sciences, Jinan 250100, China; 4. Key Laboratory of Crop Genetic Im⁃provement and Ecological Physiology of Shandong Province, Jinan 250100, China
  • Online:2020-12-28 Published:2020-11-17

Abstract: In order to further explore the mechanism of single-seed sowing for improving yield in peanut (Ara⁃
chis hypogaea L.), effects of single-seed sowing and double-seed sowing on phenolic acid content, soil enzyme ac⁃
tivity of peanut rhizosphere soil at the flowering and pegging stage, the pod setting stage, and the pod filling stage
were studied by using the method of field potted simulation experiment. The results showed caffeic acid in rhizo⁃
sphere soil treated by single-seed sowing was less than that treated by double-seed sowing during the three sam⁃
pling periods, but phthalic acid and vanillic acid of single-seed sowing were added at pod filling stage.The contents
of p-hydroxybenzoic acid, ferulic acid, benzoic acid and cinnamic acid in the rhizosphere soil of single-seed sowing
were significantly lower than those in the double-seed sowing (P<0.05). Compared with double-seed sowing, singleseed
sowing increased the urease, alkaline phosphatase and invertase activities in the rhizosphere soil of peanut, es⁃
pecially at the flowering and pegging stage of peanut (P<0.05). Single-seed sowing increased the pod yield of per
pot, the pod number per plant, the full pod rate, the kernel rate and the individual biomass production, but signifi⁃
cantly decreased the pods of per kilogram (P<0.05). This study indicated that single-seed sowing can reduce the
competition between peanut individuals in the underground by reducing the species and content of phenolic acids
and increasing the enzyme activity in the peanut rhizosphere soil, further to increase the productivity potential for
individual plant and achieve peanut yield increase.

Key words:  , peanut;single-seed sowing;rhizosphere;phenolic acid;soil enzyme;yield

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