STUDY ON FLOWER-BUD DIFFERENTIATION AND FORCING OF HERBACEOUS PEONY

草本牡丹花芽分化及催熟的研究

• 批准号: 04660033
• 负责人: AOKI Noriakii
• 金额: $ 1.34万
• 依托单位: SHIMANE UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1993
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-04660033/
• 关键词: herbaceous peony; flower-bud differentiation; forcing; pre-chilling; cut-flower quality; flowering; GA treatment; chilling period; 到花日数

1) The leaf number increased from June 20 to Sept. 28, but no differentiation of bacts was found. Sepals were observed at the first 10 days of Oct, the defferantiation of petals from the middle 10 days of Oct., stamens from the middle 10 days of Nov.and pistils from the last 10 days of November.2) The longer the chilling period, the longer the length of flower bud was. The earlier the planting date, the earlier the sprouting and flowering were. The number of days from planting to flowering was shortened with increasing chilling period. The cumulative temperature from sprouting to flowering was almost constant regardless of chilling period. The growth of flower buds was accelerated by pre-chilling for 10 days, and some differences were recognized between flower bud of pre-chilling plot and that of control at the end of pre-chilling and chilling. Sprouting, budding and flowering were also accelerated by the pre-chilling.3)Pre-chilling at 15ﾟC was effectual to advance flowering percentage than that at 8ﾟC.Flowering percentage was advanced by combination of pre-chilling(15ﾟC) and GA treatment. GA treatment just after sprouting was very effectual to advance flowering percentage, but treatments in twice lowered the efficacy. It was recognized that GA treatment tended to lighten the flower color of forced herbaceous peony.

1)叶片数在6月20日至9月期间增加。10月前10天观察到萼片，10月中旬开始观察到花瓣的分化，11月中旬10天的雄蕊和11月下旬10天的雌蕊。2）寒冷期越长，花蕾长度越长。播种期越早，发芽开花越早。从定植到开花的天数随冷期的延长而缩短。从发芽到开花的积温几乎是恒定的，与冷期无关。预冷10 d可促进花蕾的生长，预冷结束和冷后，预冷区的花蕾与对照有一定的差异。（3）15 ℃预冷处理比8 ℃预冷处理能有效地提高开花率，预冷（15 ℃）与GA联合处理能提高开花率。芽后立即处理GA对提高成花率效果显著，但两次处理效果较差。GA处理有使芍药花色变淡的趋势。

项目成果

Noriaki, AOKI: "Effect of pre-chilling on the growth and development of flower bud and flowering of forced herbaceous peony (Paeonia lactiflora PALL.)" Bull.Fac.Agr.Shimane Univ. 27. 73-78 (1993)

Noriaki, AOKI：“预冷对强制草本牡丹（Paeonialactiflora PALL.）花蕾生长发育和开花的影响”Bull.Fac.Agr.Shimane Univ.

AOKI,N.: "Effect of pre-chilling on the growth and development of flower bud and the flowering of forced herbaceous peony(Paeonia lactiflora PALL.)." Bull.Fac.Agr.Shimane Univ.27. 73-78 (1993)

AOKI,N.：“预冷对芍药花芽生长发育和强制开花的影响”。