Biodiversity Science ›› 1997, Vol. 05 ›› Issue (4): 251-256.doi: 10.17520/biods.1997043

• 论文 • Previous Article     Next Article

Flowering and pollination biology of Eleutherococcus brachypus

Wang Zhongli1), Liu Linde1), Tian Guowei2), Shen Jiaheng1)   

  1. 1)Biological Department of Yantai Normal College ,  Yantai  264025
    2)Biological Department of Harbin Normal University ,  Harbin  150080
  • Received:1996-04-29 Revised:1997-03-12 Online:1997-11-20
  • Shen Jiaheng1)

The authors not only observed flowering phenology, flowering pattern, species of visiting insects, visitation rate of pollinators and their foraging behavior, but also studied pollen viability, stigma receptivity, pollen-ovule ratio, effect of insect pollination and breeding system. The results indicated that Eleutherococcus brachypus was in the progress of vegetative propagation and a population was a clone. A given flower kept open for about two days, but successive bloom of the flowers in a population lengthened its florescence for about 20 days. The pollen-ovule ratio (P/O) was about 2500~3200. On the first day when Eleutherococcus brachypus was in bloom, the pollen grains shed. The viability of polen was over 90% and it lasted for over five days. The stigma has a receptivity of 10 days or so. Nectar secretion started on the first day and continued for about 10 days. Although it was physiologically self-compatible, pollinator visitation could highly enhance fruit set. The  invectors chiefly visited between 1200 and 1400 hours. Insects pollinated mainly among different flowers of the same clone, which, in a broad sense, belonged to self-pollination. Pollinators were diverse small insects such as smallbees, wasps, flies and beetles. Artificial pollination experiments showed that under  natural condition, the number of pollen on the stigma was inadequate. [WTBX]Eleutherococcus brachypus adapted to the habitat by such characteristics as its flowering season, high pollen viability, long time stigma receptivity and nectar secretion duration, thus its higher fruit set produced. The average fruit set ratio of Eleutherococcus brachypus  was 65% while plump seed ratio was 45.5%. No seedling was found in the field. It seems that the poor quality of seeds caused by inbreeding depression accounted for this. The poor quality of seeds also limited the distribution of  Eleutherococcus brachypus.

No related articles found!
Full text



[1] Hendrik Wünsche, Ian T. Baldwin and Jianqiang Wu. Silencing NOA1 Elevates Herbivory-Induced Jasmonic Acid Accumulation and Compromises Most of the Carbon-Based Defense Metabolites in Nicotiana attenuata[J]. J Integr Plant Biol, 2011, 53(8): 619 -631 .
[2] GE Shun-Feng, XU Hai-Gang, JI Meng-Meng, and JIANG Yuan-Mao. Effects of soil C:N on growth and distribution of nitrogen and carbon of Malus hupehensis seedlings[J]. Chin J Plan Ecolo, 2013, 37(10): 942 -949 .
[3] Katherine G. Zulak and Jörg Bohlmann. Terpenoid Biosynthesis and Specialized Vascular Cells of Conifer Defense[J]. J Integr Plant Biol, 2010, 52(1): 86 -97 .
[4] Yann-Ru Lou, Sheaza Ahmed, Jian Yan, Adewale M. Adio, Hannah M. Powell, Paul F. Morris, and Georg Jander. Arabidopsis ADC1 functions as an Nδ-acetylornithine decarboxylase[J]. J Integr Plant Biol, 0, (): 0 .
[5] WEI Xiao-Hua, DAI Li-Min. REVIEW OF ECOLOGICAL RESEARCH ON IN-STREAM WOOD[J]. Chin J Plan Ecolo, 2006, 30(6): 1018 -1029 .
[6] Tang Pei-song. Preface to Photosynthesis-Photons, Excitons, Electrons, Protons, Ions and Their Interactions with Photosynthetic Membrane by Bacon Ke[J]. Chin Bull Bot, 1992, 9(02): 1 -2 .
[7] Hu Shi-yi. Lipoid Bodies in Plant Tissues[J]. Chin Bull Bot, 1994, 11(04): 49 -51 .
[8] Liu Dong-zhuo and Li Lan. The Karyotype Analysis of Solanum pseudocapsicum[J]. Chin Bull Bot, 1992, 9(03): 50 .
[9] WANG Bao-Shan;LI De-Quan;ZHAO Shi-Jie;MENG Qing-Wei and ZOU Qi. Effects of Iso-osmotic NaCl and KCl Stress on Growth and Gas Exchange of Sorghum Seedlings[J]. Chin Bull Bot, 1999, 16(04): 449 -453 .
[10] Michael Staab, Joel Methorst, Jan Peters, Nico Blüthgen, Alexandra-Maria Klein. Tree diversity and nectar composition affect arthropod visitors on extrafloral nectaries in a diversity experiment[J]. J Plant Ecol, 2017, 10(1): 201 -212 .