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Bulletin of Botanical Research ›› 2021, Vol. 41 ›› Issue (6): 862-869.doi: 10.7525/j.issn.1673-5102.2021.06.003

• Research Report • Previous Articles     Next Articles

Interspecies Difference of Astragalus on Root Development, Component Accumulation and Apparent Growth in Northern China

Hai-Jun XU1,2, Qin YAO3, Xin-Yu CHENG4, Xiao-Fei WANG2   

  1. 1.Key Laboratory of Forest Plant Ecology,Ministry of Education,Northeast Forestry University,Harbin 150040
    2.Daqing Branch of Heilongjiang Academy of Sciences,Daqing 163319
    3.Landscaping company of Logistic Administration of Daqing Oilfield Limited Company,Daqing 163711
    4.College of Life Sciences,Shangrao Normal University,Shangrao 334001
  • Received:2020-06-03 Online:2021-11-20 Published:2021-10-29
  • About author:XU Hai-Jun(1979—),male,associate professor,PhD,engaged in plant cultivation and plant nutrition research.
  • Supported by:
    Heilongjiang academy of sciences scientific research fund(KY2018DQ01);Special fund for basic applied technology research by institute of Heilongjiang Province(ZNJJ2020DQ01)


To clarify the interspecies difference of Astragalus has an important impact on its industrial planting, the differences between Astragalus mongolicus and A. membranaceus were analyzed including root structure development, root morphology, medicinal components and apparent growth respectively. The results showed that: ①On the early stage, there was no significant difference in root structure between Astragalus species, while sowing 60 d later, starch accumulation in phloem ray and xylem ray parenchyma cells of A. mongolicus were significantly higher than that of A. membrane. ②The contents of calycosin-7-glucoside, formononetin and polysaccharide in root of A. mongolicus were 1.8, 1.6 and 1.3 times as much as that of A. membranaceus, respectively. ③The root morphological distortion rate of A. membranaceus (70%) was significantly higher than that of A. mongolicus(53.1%), and the confidence intervals of the root shape coefficient(RS1) of A. membranaceus and A. mongolicus were [0.77 0.82] and [0.74 0.79], respectively. ④The plant height, ground diameter and A/U values of A. membranaceus were 1.14-1.22, 1.13-1.46, 1.21-1.80 times as much as that of A. mongolicusP<0.05), respectively, but the root length was significantly lower than that of A. mongolicus. Therefore, it is suggested that planting varieties should be selected species according to the production target.

Key words: Astragalus mongolicus, Astragalus membranaceus, root anatomical characters, root morphology, apparent growth, medicinal component

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