| 王俊杰，廖雅汶，王雅青，陈祥磊，王志雯，朱桢栀，姚锋先，朱 博，成 臣.穴盘基质拌施烯效唑对不同品种生菜幼苗生长发育的影响[J].广东农业科学,2022,49(2):16-23 |
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穴盘基质拌施烯效唑对不同品种生菜幼苗生长发育的影响 |
| Effects of Different Concentrations of Uniconazole in PlugMedia on Growth and Development of Lettuce Seedlings |
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| DOI：10.16768/j.issn.1004-874X.2022.02.003 |
| 中文关键词: 烯效唑 生菜 幼苗生长 叶型参数 可溶性固形物 |
| 英文关键词: uniconazole lettuce seedling growth leaf parameter soluble solid |
| 基金项目:江 西 省 重 点 研 发 计 划 项 目（20171ACF60007，20203BBFL63065）； 江 西 省 科 技 平 台 建 设 项 目（2017PTGCD0052） |
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| 中文摘要: |
| 【目的】明确穴盘基质拌施不同浓度烯效唑对不同品种生菜幼苗生长发育的影响。【方法】以 5 个
南方生菜品种为材料，研究穴盘基质拌施不同浓度（0~50 mg/L）烯效唑对生菜生长、叶型参数及可溶性固形物（TSS）
含量的影响。【结果】随着烯效唑拌施浓度增加，各品种生菜幼苗根鲜、干重以及地上部鲜重、干重均表现为
先增加后下降，耐抽苔生菜和罗马直立生菜的根鲜重和根干重在 10 mg/L 烯效唑处理最大，其余品种上述指标在
5 mg/L 烯效唑处理最大。幼苗总叶宽、最大功能叶叶宽和总叶面积同样在 5 mg/L 烯效唑处理下达最大，奶油生
菜幼苗总叶宽和总叶面积均比其他品种大。在幼苗根冠比上，玻璃生菜、奶油生菜和耐抽苔生菜随烯效唑浓度
增加而增加，香港软尾生菜和罗马直立生菜则先增后降。此外，在 50 mg/L 烯效唑处理下各品种生菜幼苗 SPAD
值显著增加，而株高、总叶面积、TSS 积累受到严重抑制。【结论】基质拌施适宜浓度（5 mg/L）烯效唑育苗可
以培育壮苗，若浓度过高则会抑制生菜幼苗生长发育。 |
| 英文摘要: |
| 【Objective】The study was carried out to explore the effects of different concentrations of uniconazole in
plug media on the growth and development of different varieties of lettuce seedlings.【Method】Five lettuce varieties in
southern China were used to study the effects of different concentrations (0-50 mg/L) of uniconazole on seedling growth,
leaf shape parameters and soluble solids (TSS) of lettuce.【Result】With the increase of uniconazole concentration, the
root fresh weight, root dry weight, shoot fresh weight and shoot dry weight of seedlings of various lettuce varieties increased
first and then decreased. The root fresh weight and dry weight of bolting-tolerant lettuce and Roman upright lettuce were
the highest under 10 mg/L uniconazole treatment, and those of other varieties were the highest under 5 mg/L uniconazole
treatment. The total leaf width, maximum functional leaf width and total leaf area of seedlings also reached the maximum
under 5 mg/L uniconazole treatment. The total leaf width and total leaf area of butter lettuce seedlings were larger than those of other varieties. The root-shoot ratio of iceberg lettuce, butter lettuce and bolting-tolerant lettuce increased with the increase
of uniconazole concentration, while the root-shoot ratio of Hong Kong soft-tail lettuce and Roman upright lettuce increased first
and then decreased. In addition, under the treatment of 50 mg/L uniconazole, SPAD values of lettuce seedlings of all varieties
increased significantly, while plant height, total leaf area and TSS accumulation were severely inhibited.【Conclusion】Strong
seedlings of lettuce could be cultivated by the medium with suitable concentration (5 mg/L) of uniconazole. The growth and
development of lettuce seedlings would be inhibited by higher concentration of uniconazole. |
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