四川农业大学学报 ›› 1995, Vol. 13 ›› Issue (04): 492-497.doi: 10.16036/j.issn.1000-2650.1995.04.021

• 研究论文 • 上一篇    下一篇

汕优63休眠芽幼穗分化发育规律初步研究

田彦华1, 严志彬1, 郑常敏2   

  1. 1. 四川农业大学水稻研究所, 温江县 611130;
    2. 富顺县农业局农技站
  • 收稿日期:1995-06-01 出版日期:1995-12-31 发布日期:2017-04-22

PRELIMINARY STUDIES ON THE DIFFERENTIATION AND DEVELOPEMENT OF YOUNG PANICLES OF DORMANT BUDS IN SHAN-YOU 63

Tian Yanhua1, et al1   

  1. Rice Research Institute, Sichuan Agricultural University, Wenjiang, Sichuan, China 611130
  • Received:1995-06-01 Online:1995-12-31 Published:2017-04-22

摘要: 1987和1993年分别用石蜡切片法对杂交中稻汕优63休眠芽幼穗分化发育的进程进行了显微观察,研究了它与头季稻生长发育和收获的关系,以及它发育成熟的天数和积温。结果表明,汕优63休眠芽伸长与幼穗分化发育开始于头季稻齐穗后7-10天。营养生产与生殖生长并进,穗发育由上而下开始分化。头季稻成熟期,休眠芽穗发育进程最高为雌蕊形成期,以倒3芽为最快;稳分化进程最低为第一苞分化期,以倒5芽为多。各节芽分化至齐穗期需38-45天,积温943.9-1050.2℃。芽长度的变化与穗分化进程无明显相关性。从芽穗发育进程规律来看,头季稻齐穗后15天为促芽肥最佳施期。头季稻成熟期适时收割确保再生稻安全结实。

关键词: 汕优63, 休眠芽, 幼穗, 水稻

Abstract: The differentiation and developement process of young panicles of dormant buds in shan-you 63, a medium maturing hybrid rice variety, was investegated with parafin wax sections on microscopes in 1987 and 1993, respectively, The relationship in devedopement between dormant buds and the first rice crop the days and the accumulated temperatures to msture were studied, the results showed that the elongation and differentiation of the dormant buds started 7-10 days after full heading of the first rice crop.

Key words: SHANYOU63, DORMANT BUD, YOUNG PANICLE, PADDY

中图分类号: 

  • S511.1