期刊论文

中文

作物学报

0496-3490

2005

31

3

330-336

10.3321/j.issn:0496-3490.2005.03.010

国家自然科学基金项目 (3 0 3 70 83 5 ) 湖南省中青年基金资助项目 (0 0JZY2 14 7) 湖南省教育厅青年基金资助项目 (0 2B0 11) 湖南省自然基金项目 (0 3JJY3 0 3 1) 国家粮食丰产科技工程——湖南省水稻丰产高效技术集成研究与示范 (2 0 0 4BA5 2 0A0 1)。

本校为第一机构

以两系杂交稻培矮64S/E32、培两优500为材料,采用留高桩和节插两种试验方法,对两组合各节位腋芽的再生特性进行了研究.结果表明:(1)头季稻齐穗期中部腋芽较长,齐穗到齐穗后20 d各节腋芽伸长速度均慢,齐穗后20 d到成熟期伸长速度均加快,但上位芽更快.(2)中高节位腋芽对母体营养物质的依赖性较低节位腋芽大,且其营养供应优先于低节位腋芽.(3)母体条件下腋芽再生力强弱,由遗传因素、母茎营养条件及生态条件等共同决定;只有将高桩再生稻试验与节插试验相结合,方可客观评价各节位腋芽决定于遗传因素的再生力强弱.(4)头季稻节间全氮含量与相应节位再生率的关系,齐穗期到齐穗后10 d呈显著正相关,齐穗后...

Two-line hybrid combinations—Pei’ai 64S/E32 and Peiliangyou 500 were used to investigate the ratooning properties of axillary buds from different nodes in vivo and in vitro . The high-stubble and node-cuttage experiments were conducted. The main results are as follows: (1) The length of the middle nodes' axillary buds was longer than that of other nodes' in fully heading stage (FHS) in main crop. The growth speed of all nodes' axillary buds was slow from FHS to 20 d after FHS, and it accelerated from 20 d after FHS to maturing stage, but the ...