YANG Junwei,PAN Tonghua,WANG Jiawei,et al.Effects of Different Light Quality on Tomato Seedlings Growth and Roots[J].Northern Horticulture,2018,42(12):1-6.[doi:10.11937/bfyy.20174675]
不同光质对番茄幼苗生长和根系的影响
- Title:
- Effects of Different Light Quality on Tomato Seedlings Growth and Roots
- Keywords:
- light quality; tomato seedlings; LED; photosynthesis; roots
- 文献标志码:
- A
- 摘要:
- 以“金棚朝冠”为试材，采用基质栽培法，使用1/2倍山崎番茄营养液为幼苗提供营养，以LED灯为光源，在200 μmol m-2 s-1光强下，以白光（W）为对照，研究了不同比例的红蓝光（R:B=1:0 、2:1、1:1、1:2、0:1）对番茄幼苗的影响，以期筛选出最适合番茄幼苗生长的光质配比。结果表明：R处理下幼苗株高和茎粗显著高于其它处理，B处理下最矮；不同光质处理25 d后，W处理下幼苗光合速率最高，2R1B次之，B处理下最低。1R2B处理下Gs最高，R最低。1R1B处理下叶绿素a/b最大。2R1B处理下，幼苗根表面积最大， 1R1B处理下根体积最大。2R1B和1R1B处理下壮苗指数显著高于其它处理。总之，R处理导致幼苗徒长，B处理抑制幼苗生长，幼苗在不同阶段对不同光质响应不同，1R1B处理下根体积最大，2R1B和1R1B是较适宜的红蓝配比。
- Abstract:
- Tomato seedlings cv. ‘Jinpeng chaoguan’ were used as experimental material, matrix cultivation method was adopted and 1/2 times Yamasaki tomato nutrient solution was used to provide nutrition for the seedlings. LED was used as light resources, under 200 μmol m-2 s-1 light intensity, with white light (W) as control, and in order to select the most suitable light quality ratio for the growth of tomato seedling, the effects of different red and blue light ratios(R:B=1:0,2:1,1:1,1:2,0:1) on tomato seedlings were studied.The results showed that, plants height and stem diameter of seedlings under R treatment significantly were higher than those under other treatments, and plants height under B treatment was lowest. After 25 days under different light quality treatments, Pn of seedlings under W was highest, followed by 2R1B, and it had lowest under B treatment. Moreover, Gs under 1R2B was highest, while it was lowest under R. The Chl a/b was found under 1R1B was highest, and the surface area of seedlings roots was highest under 2R1B whereas the root volume under 1R1B reached the highest point. Moreover, the healthy index under 2R1B and1R1B significantly higher than those under other treatments. In conclusion, R treatment results in seedlings spindling while B treatment suppress its growth. Seedlings had discrepant responsive under different light quality and the roots volume was highest under 1R1B, and 2R1B and 1R1B were most suitable red and blue light ratios for tomato seedlings growth.
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备注/Memo
第一作者简介：杨俊伟（1992-），男，河北邯郸人，硕士研究生，研究方向为光质调控。E-mail：15829316842@163.com. 责任作者：邹志荣（1956-），男，陕西延安人，博士，教授，博士生导师，现主要从事温室环境和温室作物栽培等研究工作。E-mail：zouzhirong2005@hotmail.com. 基金项目：宁夏回族自治区“十三五”重点研发计划重大资助项目（2016BZ0901）。收稿日期：2018―02―01