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| Effects of Branch Maturity on Growth and Nutrient Contents of Young Bud of Aralia elata（Miq.）Seem. |
| YU Xi-hong 1，2，SHAO Qi-feng1，CHENG Yao1，LIU Han-bing1，HUI Ai-bin1，JIANG Xin-mei1，2*，ZHAO Heng-tian3 |
1 Key Laboratory of Biology and Genetic Improvement of Horticultural Crops，Northeast Region，Ministry of Agriculture，
Northeast Agriculture University，Harbin 150030，Heilongjiang，China；2 Collaborative Innovation Center for Development
and Utilization of Forest Resources，Harbin 150040，Heilongjiang，China；3 Institute of Northeast Geography and Agricultural
Ecology，Chinese Academy of Sciences，Harbin 150040，Heilongjiang，China |
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Abstract Taking annual Aralia elata（Miq.）Seem. as material，this study divided the branches into 1，
2 and 3 levels，according to their lignification and fibrosis degrees；and studied the effects of branch maturity
on growth and nutrient contents of young buds，by out-of-season cultivation in solar greenhouse．The results
showed that branch maturity could obviously affect the young bud growth and quality．The sprouting rate
and single plant bud yield increased significantly with the increase of branch maturity．Besides，the nutrient
contents of soluble sugar，soluble protein，VC and polysaccharide，etc. and secondary metabolites including
flavonoids and saponins all showed an increasing trend．In conclusion，selecting branches with high maturity
and favorable degree of lignification in out-of-season Aralia elata（Miq.）Seem. production could achieve
higher economic value．
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Received: 09 May 2019
Published: 14 June 2019
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