| 盆景植物火棘主要观赏性状化学调控 |
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| 引用本文： | 李玉奇,邓光华.盆景植物火棘主要观赏性状化学调控[J].园艺学报,2007,34(2):455-460. |
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| 作者姓名： | 李玉奇 邓光华 |
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| 作者单位： | （江西农业大学园林与艺术学院，南昌330045） |
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| 摘 要： | 用盆栽3年生扦插火棘Pyracantha fortuneana (Maxim.) Li]作为试材，在开花前20 d左右喷施PP333或6-BA，结果表明，PP333能使新梢缩短，叶片变小、变厚，使初花期延迟，花期延长，结果量增多，果梗变短，明显提高了火棘的观赏价值。在本试验范围内，PP333的浓度与根冠比呈正相关。6-BA虽可抑制新梢增长，使叶片变小，促进新梢增粗，但结果量、叶片叶绿素含量均下降。各处理均可使火棘叶片中内源GA、IAA含量减少，使ABA含量增加。运用灰色系统理论对火棘主要观赏性状进行综合评价发现，用500 mg·L-1PP333处理效果最好，且评价结果与实际表现基本相符。
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| 关 键 词： | 盆景植物 火棘 主要观赏性状 化学调控 内源激素 |
| 文章编号： | 0513-353X（2007）02-0455-06 |
| 收稿时间： | 2006-08-28 |
| 修稿时间： | 2006-08-282007-01-22 |
Chemical Regulation of Main Ornamental Characters of Potted Plant Pyracantha fortuneana |
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| LI Yu-qi,DENG Guang-hua.Chemical Regulation of Main Ornamental Characters of Potted Plant Pyracantha fortuneana[J].Acta Horticulturae Sinica,2007,34(2):455-460. |
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| Authors: | LI Yu-qi DENG Guang-hua |
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| Institution: | (College of Forestry, Jiangxi Agricultural University, Nanchang 330045, China) |
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| Abstract: | Effects of PP333 or 6-BA on the main ornamental characters were investigated with 3-year-old cuttage Pyracantha fortuneana(Maxim.)Li.The result showed that PP333 treatment shortened shoot growth,diminished and thickened leaves,postponed the first bloom,prolonged florescence,increased the quantity,shortened fruit stalk,and significantly increased its ornamental value.The concentration of PP333 had a direct correlation with the root/top ratio.Although 6-BA retrained the shoot growth,lessened the leaf area and improved the diameter of the shoot,but it reduced the fruit quantity and the chlorophyll content of the leaves.Two growth regulators decreased the contents of endogenous GA and IAA in leaves,but increased the content of endogenous ABA.The comprehensive evaluation using the gray system theory shows that PP333 at 500 mg L-1 produces optimal effect on the ornamental characters.The effect of PP333 treatment in ornamental evaluation is better than that of 6-BA,which accords with the practical observation. |
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| Keywords: | Potted plant Pyracantha fortuneana Ornamental characters Chemical regulation Endogenous hormones |
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