Mechanism of deleyed development on young panicle in sorghum varieties

高粱品种幼穗发育迟缓的机制

• 批准号: 08660016
• 负责人: NAKANO Junichi
• 金额: $ 1.47万
• 依托单位: Tottori University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08660016/
• 关键词: Daylength; Delayd heading; Interaction; Panicle initiation; Photoperiod; Sorghum; Temperature

1. Greenhouse experiment were conducted to clarify the interactions of temperature and photoperiod. From the results for Ryuujinwase (photosensitive variety), the minimum duration of panicle initiation (emergence to young panicle initiation stage) was observed by 22-24ﾟC in long daylength (16hrs) condition.2. The period of panicle initiation was varied with diurnal temperatur change conditions (24(]SY.+-。[)0-24(]SY.+-。[)6ﾟC), and there was high correlation coefficient between the duration of panicle initiation and effective accumulate temperature (critical temperature ; 22ﾟC).3. From the results of short daylength treatments (12hrs ; 3,6 and 9 days) before panicle initiation time in field conditions using some varieties, the durations of BVP (basic vegitative phase) of varieties were estimated ranging from 3 to 9 days, and the durations of BVP were reduced by hifh temperature. And also, the durations of PSP (Photo sensitive phase) were estimeted ranging 3-6 days, and the durations of PSP were increased at temperature above 22-24ﾟC.4. This study confirmes the necessity to divide the entire pre-initiation period into the two phases for accurate estimation model for heading time in sorghum varieties. Futher studies are needed to elucidate the phenomon in some photo-sensitive cultivars of the deleyed heating by high temperatures.

1.通过温室试验研究了温度与光周期的相互作用。从研究结果来看，在长日照（16小时）条件下，22-24 ℃是水稻幼穗分化（出苗至幼穗分化期）的最短时间.幼穗分化期随温度日变化而变化。[）0-24（）SY. ±. [)6有效积温（临界温度; 22 ℃）与幼穗分化历期呈极显著正相关.在田间条件下，用短日照（12小时、3、6和9天）处理水稻品种，估算出水稻品种的基本营养期（BVP）持续时间在3 ~ 9天之间，高温使BVP持续时间缩短。此外，还测定了光敏感期（PSP）的持续时间，其范围为3-6 d，温度高于22-24 ℃时，PSP持续时间增加.本研究证实了将高粱品种抽穗期的整个前期分为两个阶段的必要性。一些光敏品种高温延迟加热的现象有待进一步研究。

项目成果

中野 淳一: "高温・長日条件でのソルガム品種の出穂遅延について" 日本作物学会紀事. 66巻(印刷中). (1997)

Junichi Nakano：“关于高温和长日照条件下高粱品种的抽穗延迟”，日本作物科学学会通报第 66 卷（出版中）。

中野 淳一: "日長反応の温度依存性に着目したソルガム品種の分類" 日本草地学会誌. 43巻(印刷中). (1997)

Junichi Nakano：“关注光周期响应温度依赖性的高粱品种分类”，日本草原学会杂志，第 43 卷（出版中）。

中野 淳一: "日長反応の温度依存性に着目したソルガム品種の分類" 日本草地学会誌. 43巻. 62-63 (1997)

Junichi Nakano：“关注光周期响应的温度依赖性的高粱品种分类”日本草原协会杂志第 43 卷 62-63（1997 年）。

J.Nakano, T.Yamaguchi, M.Takayanagi And T.Takigami: "Delayd heating in sorghum varieties under high temperature and lon day-length condition." Jap.Journal of Crop Science. Vol 66 (3). 503-504 (1987)

J.Nakano、T.Yamaguchi、M.Takayanagi 和 T.Takigami：“高温和长日照条件下高粱品种的延迟加热。”

中野 淳一: "高温・長日条件でのソルガム品種の出穂遅延について" 日本作物学会記事. 66巻. 503-504 (1997)

Junichi Nakano：“关于高温和长日照条件下高粱品种的抽穗延迟”，日本作物学会文章 66. 503-504 (1997)。