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林业科学 ›› 2003, Vol. 39 ›› Issue (4): 37-42.doi: 10.11707/j.1001-7488.20030406

• 论文及研究报告 • 上一篇    下一篇

库-源关系对枣树14C-光合产物分配的影响

刘平 温陟良 彭士琪 郭振怀   

  1. 河北农业大学中国枣研究中心,保定071001;河北农业大学园艺学院,保定071001
  • 收稿日期:2001-06-11 修回日期:1900-01-01 出版日期:2003-07-25 发布日期:2003-07-25

EFFECT OF SINK-SOURCE RELATIONSHIPS ON PARTITIONING OF14C PHOTOSYNTHATES IN CHINESE DATE(ZIZYPHUS JUJUBA)

Liu Ping,Wen Zhiliang,Peng Shiqi,Guo Zhenhuai   

  1. Research Center of Chinese Date, Agriculture University of Hebei Baoding 071001 Department of Horticulture,Agriculture University of Hebei Baoding 071001
  • Received:2001-06-11 Revised:1900-01-01 Online:2003-07-25 Published:2003-07-25

摘要:

运用14C示踪技术对赞皇大枣果实发育期库-源比例和相对位置对14C -光合产物在不同器官中的分配进行了研究。结果表明:果实缓慢生长期间,与单果枣吊相比,双果枣吊果实的放射比活性下降,但是果实获得的14C -光合产物量增加了6.68% ;枣吊去叶处理(均匀去掉一半叶片)后,剩余叶片的光合产物输出率增加了17.06 % ,果实获得的标记光合产物增加了15.26 % ;当果实一侧叶片去除时,其异侧叶片也能提供一定量的光合产物供果实生长发育所需;并且,同一枣股不同枣吊之间也存在着光合产物的相互交换。本文从营养学角度对枣树低坐果率的原因进行了探讨。

关键词: 枣树, 库-源比例, 库-源相对位置, 14C-光合产物, 分配

Abstract:

The effect of sink source ratio and position on partitioning of 14C photosynthates in Chinese Date was studied by14C tracer technique in this paper.The results showed that compared with one-fruit branch,14C specific activity of fruits of two\|fruit branch decreased while total14C photosynthates increased by 6.68%. The proportion of photosynthates exported from remained leaves was raised by 17.06% when the leaves of fruit branch were removed(half of all),and the proportion of labeled photosynthates imported to fruits was also raised by 15 26%;The photosynthates exchanged mutually among fruit branches at the same mother branch; The other side leaves could provide fruits with photosynthates when the same side leaves were removed. The reason of lower fruit set was also discussed.

Key words: Chinese Date (Zizyphus jujuba), Sink-source ratio, Sink source position, 14C photosynthates, Partitioning