| 王海芬,袁军伟,张海娥,张京政,曹飞,郭春磊,张丽丽,齐永顺.不同刻芽处理对苹果枝条内源激素和发芽成枝的影响[J].干旱地区农业研究,2020,38(2):150~157 |
| 不同刻芽处理对苹果枝条内源激素和发芽成枝的影响 |
| Different responses of endogenous hormones and germinating and sprouting to bud\|notching of different ways in apple branches |
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| DOI：10.7606/j.issn.1000-7601.2020.02.21 |
| 中文关键词: 苹果刻芽 内源激素含量 萌芽率 成枝力 |
| 英文关键词:apple bud\|notching endogenous hormones content germination rate sprouting rate |
| 基金项目:秦皇岛市科学技术局项目“苹果新品种瑞阳、瑞雪引进与示范”(201702B005)；河北省自然科学基金（C2019301034） |
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| 中文摘要: |
| 为揭示苹果枝条内源激素动态特征与发芽成枝对不同刻芽处理的差异性反应，探明不同刻芽处理条件下苹果内源激素调控枝条芽眼萌发的机制，以3 a生‘中秋王’苹果的1 a生枝条为材料，设全刻芽（T1）、基部刻芽（T2）、中部刻芽（T3）、上部刻芽（T4）4个处理，以不做刻芽处理的枝条为对照（CK），研究其内源激素含量与枝条萌发成枝的关系。结果表明，刻芽处理可显著提高中秋王苹果枝条刻芽部位的萌芽率、成枝力（P<0.05），萌芽率和成枝率整体分别较CK提高了9.3%和171.7%。枝条萌芽率与成枝力呈极显著正相关（P<0.01），相关系数为0.643，与长枝率、短枝率呈显著正相关和负相关（P<0.05），相关系数分别为0.594和-0.613。刻芽后，枝条被刻部分芽中IAA和GA3含量最高，分别较CK提高26.5%和40.3%，而ABA含量较CK降低了66.1%。刻芽后7 d枝条芽中ZT/IAA比值和刻芽后14 d ZR/GA3比值与萌芽率负相关性最好，相关系数分别为-0.731和-0.719，说明这两个指标对枝条萌芽的调控作用最大。 |
| 英文摘要: |
| In order to reveal the different response of endogenous hormones and germinating and sprouting to bud notching of different ways and the mechanism that endogenous hormones regulate the bud germinating in apple branches, juvenile branches of 3-year-old trees of Malus pumila ‘Middle-Autumn King’ were treated with different ways including bud\|notching all (T1), bud\|notching in base (T2), middle (T3), upper (T4) parts of a branch, and no bud\|notching as control to study the relationship between dynamics of endogenous hormones and sprouting in branches. The results showed that the germination rate and sprouting rate were significantly increased by 9.3% and 171.7%, respectively (P<0.05). There was a significant positive correlation (P<0.01) between the germination rate and sprouting rate with a correlation coefficient of 0.643. There was a significant positive correlation and a negative correlation (P<0.05) between the germination rate and long shoot rate and short shoot rate with a correlation coefficients of 0.594 and -0.613, respectively. After buds cutting, the highest IAA and GA3 contents in the cut part of shoots increased by 26.5% and 40.3%, respectively, while the highest ABA content decreased by 66.1%. The ZT/IAA ratio after 7 days of bud\|cutting and the ZR/GA3 ratio after 14 days of bud\|cutting had the best correlation with the bud germination rate with a correlation coefficients of -0.731 and -0.719, respectively, which indicated that these two indexes had the greatest regulation effect on bud germination. |
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