| 不同光照条件下米奴塔睡莲生长特性及抗氧化生理响应 |
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| 引用本文： | 王虹妍,卜朝阳,李先民,卢家仕,李春牛,黄展文,苏群.不同光照条件下米奴塔睡莲生长特性及抗氧化生理响应[J].热带作物学报,2022,43(4):798-806. |
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| 作者姓名： | 王虹妍 卜朝阳 李先民 卢家仕 李春牛 黄展文 苏群 |
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| 作者单位： | 广西壮族自治区农业科学院花卉研究所,广西南宁 530007 |
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| 基金项目： | 广西农业科学院科技发展基金项目(桂农科2021JM113);广西自然科学基金青年科学基金项目(2020GXNSFBA297106);广西农业科学院基本科研业务专项资助项目(桂农科2021YT132) |
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| 摘 要： | 睡莲观赏价值高,为世界性的著名水生花卉,品种繁多,花色丰富,被誉为"池塘调色板",在园林水景营造、水体净化等方面有重要作用.微型睡莲体型较小,适合家庭种植观赏,米奴塔睡莲(Nymphaea minuta)是具有代表性的微型睡莲,是培育微型睡莲新品种的优良育种材料.为了推动微型睡莲在家庭园艺的应用,了解微型睡莲对光照的需...
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| 关 键 词： | 米奴塔睡莲 光照条件 生长特性 生理响应 |
| 收稿时间： | 2021-09-17 |
Growth and Antioxidant Physiology Effects of Nymphaea minuta under Different Light Conditions |
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| WANG Hongyan,BU Zhaoyang,LI Xianmin,LU Jiashi,LI Chunniu,HUANG Zhanwen,SU Qun.Growth and Antioxidant Physiology Effects of Nymphaea minuta under Different Light Conditions[J].Chinese Journal of Tropical Crops,2022,43(4):798-806. |
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| Authors: | WANG Hongyan BU Zhaoyang LI Xianmin LU Jiashi LI Chunniu HUANG Zhanwen SU Qun |
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| Institution: | Flowers Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, Guangxi 530007, China |
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| Abstract: | Water lilies have high ornamental value and are world-famous aquatic flowers with various varieties and rich colors, known as the “pond palette”. The play an important role in garden waterscape construction and water purification. Miniature water lilies are small in size, suitable for family planting and ornamental. Nymphaea minuta is a typical miniature water lily, which is an excellent breeding material for new cultivar of miniature water lily. In order to promote the application of miniature water lily in home gardening, understand the light demand and adaptation rules of miniature water lilies, the growth characteristics and physiological parameters of miniature water lily (Nymphaea Minuta) were studied under shading rates of 0 (CK), 30%, 50% and 70%, respectively using artificail shading. The results showed that with increasing shading rate, the flower number, diameter of flower, pedicel emergence height, pedicel diameter, leaf area, leaf number, stem length, root number, root length, leaf dry weight, stem dry weight, root dry weight, total dry weight, growth vigor and survival rate of N. minuta decreased to a certain extent with significantly difference (P<0.05) and all of them being at the highest level under the full light condition. In the shading treatment for 120 days, the difference of flower number increased between different shading rate treatment (P<0.05), but the difference of flower dry weight was not significant, and the survival rate was the lowest under shading rate 70%. With the same shading time treatment, the MDA content in leaves decreased with the increase of shading rate. There was significant difference in MDA content between 30 days and 60 days of shading treatment (P<0.05), but no significant difference between 90 days and 120 days of shading treatment. In the shading treatment for 30 days and 60 days, the FAA content, POD and SOD activities in leaves did not show consistent change. In the shading treatment for 120 days between different shading rate treatment, the FAA content, POD and SOD activities in leaves increased then decreased, POD activities showed significantly difference (P<0.05), while MDA and FAA contents showed no significantly difference. Therefore, N. minuta adapts to different light environments by changing its morphological characteristics and adjusting its antioxidant physiology, which has strong antioxidant enzyme systems and shade tolerance. It grew best under full light condition with largest amount of flowers and grew well under medium shade treatment, while grew bad under lack of light treatment. This study provides a a theoretical basis for the application of Nymphaea minuta in indoor cultivation and home gardening. |
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| Keywords: | Nymphaea minuta light conditions growth characteristics physiological responses |
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