Plant Diversity ›› 2010, Vol. 32 ›› Issue (01): 47-52.DOI: 10.3724/SP.J.1143.2010.09187

• Articles • Previous Articles     Next Articles

Seed Dormancy, Germination and Storage Behavior of Magnolia wilsonii (Magnoliaceae), an Endangered Plant in China

HAN ChunYan1, 2, LONG ChunLin1   

  1. 1 Kunming Institute of Botany, Chinese Academy of Sciences,Kunming 650204, China;
    2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2009-09-20 Online:2010-02-25 Published:2010-02-25
  • Contact: LONG ChunLin

Abstract: In this paper, we measured the embryo morphology and size of Magnolia wilsonii seeds. And the effects of temperature, stratification, KNO3 and soaking on seed dormancy and germination were studied. Seeds were desiccated to different moisture content, and then stored at 4℃ and -20℃ for 100 d. The effects of desiccation and storage temperature on seed viability of M. wilsonii were analyzed. The results showed that the underdeveloped embryos of Mwilsonii seeds needed cold stratification to achieve physiological afterripening. The favorable temperature for germination of Mwilsonii seeds was 25/20℃. Cold stratification and GA3 could effectively overcome dormancy of Mwilsonii seeds. Therefore, Mwilsonii seeds have morphophysiological dormancy. About 5350% of seeds could survive in the moisture content of 539%. After 100 d storage at -20℃, all seeds in different moisture contents died. However, after 100 d storage at 4℃, 76% of seeds survived. Thus, Mwilsonii seeds exhibited intermediate seed storage behavior. The optimum storage environments was dry or moist storage at 4℃.

Key words: Magnolia wilsonii

CLC Number: