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戒指剥离,戒指切割和生长调节剂促进梨苗的相变和早期开花

Xiaojie Zhang¹, Yueju Wu¹, Xiaoming Wang¹

¹College of Horticulture, Hebei Agricultural University, Baoding 071000, China.

Plants (Basel, Switzerland)

|August 26, 2023

概括

利用植物生长调节剂和诸如环剥除之类的物理方法可以显著加快梨树开花的速度. 这些技术缩短了幼年期,使得新梨品种的选择速度更快,从而改善了繁殖周期.

科学领域:

园艺科学园艺科学
植物生理学植物生理学
繁殖技术繁殖技术

背景情况:

杂交繁殖对于梨 (Pyrus) 品种选择至关重要.
梨树苗的长期青春期阻碍了有效的繁殖.
加速相变和开花对于缩短繁殖周期至关重要.

研究的目的:

研究植物生长调节剂 (6-BA和PP333),环剥离和环切割对促进梨苗树的相变和开花的影响.
确定有效的方法来缩短幼年期和加速梨品种的繁殖周期.

主要方法:

在特定度下使用6-氨酸 (6-BA) 和帕克洛布特拉 (PP333) 的组合.
在梨树的一年生树枝上实施环切除和环切割技术.
对芽中的生理变化 (糖,蛋白质,激素) 和基因表达 (FT,LFY,TFL1) 的分析.

主要成果:

100 mg/kg 6-BA + 1000 mg/kg PP333的单次应用显著促进了开花,增加了芽溶性糖和蛋白质,改变了激素水平 (增加了ABA,降低了IAA) 和上调的开花基因 (FT,LFY),同时降低了TFL1.1.
戒指剥离和戒指切割有效地促进了相变和开花,增加了开花率,花束数量和整体开花植物.
戒指剥离在改善开花速度,抑制芽生长,增加芽生营养,减少IAA和GA3以及调节开花基因表达方面表现出最强的效果.

结论:

植物生长调节剂 (6-BA + PP333),环剥离和环切割是促进梨苗树早期开花的有效策略.
这些方法有助于缩短幼阶段,从而加速梨子育种过程.
观察到的生理和分子变化提供了关于加速开花诱导背后的机制的见解.

关键词:

增长监管机构增长监管机构梨子梨子梨子阶段变化转换阶段变化环切割环切割环切割环切割环切割环切割戒指脱衣戒指脱衣是什么意思

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