辣椒杂志2025，Vol.23Issue(1)：18-25,41,9.
不同光质处理对辣椒种子萌发及幼苗生长的影响
Effects of Different Light Qualities on Seed Germination and Seedling Growth in Chili Pepper
摘要
Abstract
Light quality is a crucial environmental variable regulating vegetable growth and development,particularly in plant factories where controllable light spectrum plays a key role in seed germination and seedling growth.Using two pepper cultivars'Yanjiao 425'and'8214'as experimental materials and white light as the control,this study investigated the effects of different red(R)and blue(B)light ratios on seed germination and seedling growth,aiming to optimize the light spectrum ratio to accelerate pepper growth.The results showed that in pepper seed germination:both cultivars exhibited maximum germination rates(92.67%,96%),germination potential(58%,69.33%),and germination index(12.34,11.91)under the R ∶ B=2 ∶ 1.At seedling stage,compared with the control,the R∶B=2∶1 treatment significantly increased stem diameter(43.2%,27.5%),leaf number(29.0%,23.3%),chlorophyll content(9.2%,3.1%),photosynthetic rate(113.3%,77.3%),transpiration rate(70.3%,57.9%),stomatal conductance(71.8%,42.3%),MDA content(-28%,-24.9%),and SOD activity(25.4%,8.9%)in both cultivars,accelerating growth progression.The R ∶ B=5 ∶ 1 treatment demonstrated maximum values in root length,canopy spread,leaf length,leaf width,and chlorophyll content,with significant superiority over control.The R∶B=2∶3 treatment achieved peak values in seedling vigor index,carotenoid content,soluble protein content,vitamin C content,POD activity,and APX activity.In conclusion,the R ∶ B=2 ∶ 1 promotes pepper seed germination,enhances photosynthetic capacity and antioxidant capacity,and accelerates plant growth processes;the R∶B=5∶1 can promote the elongation of pepper stem and leaf growth;while the R∶B=2∶3 stimulates nutrient synthesis and accumulation in pepper plants.关键词
辣椒/光质/光形态建成/光合性能/氧化酶活性Key words
Capsicum/light quality/photomorphogenesis/photosynthetic performance/oxidase activity引用本文复制引用
钟毅,隋晓燕,唐鹏,尹钦彪,何轮,刘峰..不同光质处理对辣椒种子萌发及幼苗生长的影响[J].辣椒杂志,2025,23(1):18-25,41,9.基金项目
特色蔬菜产业技术体系(CARS-24-A-15) （CARS-24-A-15）
