UV-B辐射对番茄幼苗品质的影响

生态学杂志

UV-B辐射对番茄幼苗品质的影响

侯丽丽¹,霍志金²,李炜蔷¹,徐坤^1**

(¹农业部黄淮地区园艺作物生物学与种质创制重点实验室，山东农业大学园艺科学与工程学院，山东泰安 271018； ^2山东农业大学农学院，山东泰安 271018)

出版日期:2015-07-10 发布日期:2015-07-10

Effects of ultraviolet-B radiation on tomato seedling quality.

HOU Li-li¹, HUO Zhi-jin², LI Wei-qiang¹, XU Kun^1**

(¹Ministry of Agriculture Key Laboratory of Horticultural Crop Biology and Germplasm Creation in HuangHuai Region/College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an 271018, Shandong, China; ^2Department of Agronomy, Shandong Agricultural University, Tai’an 271018, Shandong, China)

Online:2015-07-10 Published:2015-07-10

摘要/Abstract

摘要：

以不同品种番茄为试材，采用二次饱和-D最优设计，研究了UV-B辐射对番茄幼苗生长的影响，建立了生长量及壮苗指数与UV-B辐射强度和时间之间的数学模型，探讨了UV-B的生物学效应。结果表明：UV-B辐射显著改变了番茄幼苗的生长特性，且不同品种对UV-B辐射的响应较为一致；经模型解析表明，随UV-B辐射强度或时间的增加，番茄幼苗株高降低，而茎粗、根茎叶干物质量及壮苗指数则先升高后降低；辐射强度与时间存在显著的互作效应，UV-B辐射强度对株高的影响大于辐射时间，而对茎粗及壮苗指数的效应则相反；经模拟运算，培育壮苗的适宜UV-B辐射强度为14.5～25.6 μW·cm^-2，辐射时间为4.1～5.8 h·d^-1。

关键词: 雨水径流, 融雪径流, 低影响开发(LID), 绿色生态措施, 暴雨洪水管理模型(SWMM), 峰值流量

Abstract:

In this study, using quadratic saturation D-optimal design method, the effects of UV-B radiation on tomato seedling growth characteristics were studied with different varieties. The mathematical models between seedling growth, seedling index, and UV-B radiation intensity and radiation time were established, and the biological effects of UV-B were discussed. The results showed that UV-B radiation significantly affected the growth of tomato seedlings, and the response of different tomato varieties to UV-B radiation was consistent. The tomato plant height was decreased, and the stem diameter, crown and root dry mass and seedling index were firstly increased and then decreased with the increase of UV-B radiation intensity and time. The interactive effect between UV-B radiation intensity and time was significant. UV-B radiation intensity had a greater effect on plant height than radiation time, but it was opposite on stem diameter and seedling index. After simulation calculation, the appropriate intensity and time of UV-B radiation were 14.5-25.6 μW·cm^-2 and 4.1-5.8 h·d^-1, respectively, for cultivating highquality tomato seedlings.

Key words: stormwater runoff, peak flow, low impact development (LID), stormwater management model (SWMM), snowmelt runoff, green ecological measure.

侯丽丽1,霍志金2,李炜蔷1,徐坤1**. UV-B辐射对番茄幼苗品质的影响[J]. 生态学杂志.

HOU Li-li1, HUO Zhi-jin2, LI Wei-qiang1, XU Kun1**. Effects of ultraviolet-B radiation on tomato seedling quality.[J]. cje.