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园艺学报 ›› 2005, Vol. 32 ›› Issue (4): 677-680.

• 研究报告 • 上一篇    下一篇

枣树单花不同开放阶段花粉萌发率和内源激素的变化

王玖瑞;刘孟军;梁海永   

  1. (1 河北农业大学林学院, 保定071001; 2 河北农业大学中国枣研究中心, 保定071001)
  • 收稿日期:2004-12-08 修回日期:2005-01-28 出版日期:2005-08-25 发布日期:2005-08-25

Changes of Pollen Germination Rate and Endogenous Hormones during Single Flower Opening of Chinese Jujube

Wang Jiurui; Liu Mengjun;Liang Haiyong   

  1. (1College of Forestry, Agricultural University of Hebei, Baoding 071001, China; 2Research Center of Chinese Jujube, Agricultural University of Hebei, Baoding 071001, China)
  • Received:2004-12-08 Revised:2005-01-28 Online:2005-08-25 Published:2005-08-25

摘要: 以‘冬枣’和‘湖南鸡蛋枣’为试材, 研究了单花不同开放阶段花粉萌发率和内源激素的变化。枣树单花不同开放阶段的花粉萌发率不同, 湖南鸡蛋枣以萼片展平期花粉萌发率最高, 冬枣以初开期最高。冬枣花粉萌发率在整个花期始终小于3%。冬枣单花开放过程中较高水平的内源乙烯及低水平的赤霉素和玉米素与花粉萌发率低有关。鉴于冬枣的花粉萌发率极低而胚高度可育, 且鲜食品质极佳, 可以作为鲜食枣杂交育种的理想母本材料。

关键词: 枣, 花粉, 萌发, 内源激素

Abstract: The changes of pollen germination rate ( PGR) and endogenous hormones during single flower opening of Chinese jujube ( Ziziphus jujuba Mill. ) were studied using two cultivars‘Dongzao’and ‘Hunan Jidanzao’. The results showed that the PGR of Chinese jujube changed significantly during single flower opening. The PGR reached its highest at the stage of sepal flat in‘Hunan Jidanzao’and at the begining stage of opening in‘Dongzao’. PGR of‘Dongzao’kep t lower than 3% duringwhole flower season. High level ethylene, low level GA3 and Z during single flower opening were related to very low PGR in‘Dongzao’. In view of its severely low PGR, high fertility of embryo, aswell as high quality for fresh consuming, ‘Dongzao’could be used as a desirable female parent in the cross breeding of Chinese jujube.

Key words: Chinese jujube, Pollen, Germination, Endogenous hormones

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