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不同LED光质对烟草生长及养分积累的影响

2023-07-13陈军彭健健吴家森

福建农业科技 2023年4期

陈军 彭健健 吴家森

摘 要:为探究不同光质作为烟草生长光源的应用效果,在人工气候室条件下,以本生烟草为试验材料,设置3种不同光质光源LED-v1(R1.2/B1,R3.4/FR1)、LED-v2(R7.4/B1,R2.9/FR1)、LED-v1/v2(R2.3/B1,R3.1/FR1)处理,分析烟草的生长指标对不同光质的响应。结果表明:LED-v1/v2处理本生烟草的株高、茎粗、叶面积、叶片数、生物量显著优于其他处理。低R/FR和低R/B光质能提高烟草叶片的含N量,有助于合成有机物及提高抗逆性,提高烟草的经济品质。适当降低LED-v1/v2光质R/B和R/FR值更有利于烟草的生长和品质的提升。光合反应中心Ⅱ(ΦPSⅡ)、表观电子传递速率(ETR)、PSⅡ最大光化学量子产量(Fv/Fm)等叶绿素荧光指标在不同的处理间无显著差异。综上,烟草生长最适合的人工光源为LED-v1/v2(R2.3/B1,R3.1/FR1)。

关键词:本生烟草;LED;光质;叶绿素荧光

中图分类号:S 572 文献标志码:A 文章编号:0253-2301(2023)04-0052-06

DOI: 10.13651/j.cnki.fjnykj.2023.04.008

Effects of Different LED Light Qualities on Tobacco Growth and Nutrient Accumulation

CHEN Jun1, 2, PENG Jian-jian1, WU Jia-sen1

(1. School of Environment and Resources, Zhejiang A & F University, Hangzhou, Zhejaing 311300, China;2. Hangzhou Liquan Technology Co., Ltd., Hangzhou, Zhejaing 311121, China)

Abstract: In order to explore the application effect of different light quality as the light source of tobacco growth, by taking Nicotiana benthamiana as the experimental material under the condition of artificial climate chamber, three light sources with different light quality, including LED-v1 (R1.2/B1, R3.4/FR1), LED-v2 (R7.4/B1, R2.9/FR1), and LED-v1/v2 (R2.3/B1, R3.1/FR1), were set up to analyze the response of tobacco growth indicators to different light quality. The results showed that the plant height, stem thick, leaf area, blade number and biomass of Nicotiana benthamiana treated with LED-v1/v2 were significantly better than those of other treatments. Low R/FR and low R/B light quality could increase the N content in the leaves of tobacco, help to synthesize the organic matters and improve the stress resistance, and also improve the economic quality of tobacco. Appropriately reducing the R/B and R/FR values of LED-v1/v2 light quality was more conducive to the growth of f tobacco and its quality improvement. There was no significant difference in the chlorophyll fluorescence parameters such as photosynthetic reaction centre Ⅱ (ΦPSⅡ), apparent electron transport rate (ETR), PSⅡ maximal photochemical efficiency (Fv/Fm) among different treatments. In summary, the most suitable artificial light source for the growth of tobacco was LED-v1/v2 (R2.3/B1, R3.1/FR1).

Key words: Nicotiana benthamiana; LED; Light quality; Chlorophyll fluorescence

光對植物的生长发育具有非常重要的作用,是植物光合作用的动力源泉。在不同光强光质的作用下,不同的植物会产生各种不同的光形态形成反应,并影响其发育的过程[1]。LED光源因节能高效被广泛应用在植物生长领域,因为LED灯光质比较单一,可以研究不同的光质对植物生长发育的影响。在植物组织培养中,利用LED进行光照、调整光质和光量子通量密度(PPFD),有利于培育植株的成长、光循环、形态构建、缩减培育时间、提升质量。国内外对光质的研究对象多集中在作物上,LED光源已经在水稻[2-3]、小麦[4-5]、西瓜[6]、黄瓜[7-9]、拟南芥[10-12]、樱桃萝卜[13-14]、油麦菜[15]、栀子花[16]、芦荟[17]、大豆[18]、番茄[19-22]、青葱[23]、马铃薯[24]、辣椒[25]等研究,探讨不同光质对不同植物生理生化及品质的影响。……

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