摘要
采用LED光源,研究了黄瓜白光(对照)、红光、蓝光和红蓝光组合照射育苗对其定植后营养生长、光合特性、雌花数量和产量的影响。结果表明:与白光处理相比,红光处理的黄瓜幼苗在定植后生长缓慢,光合效率降低,净光合速率(Pn)、PSⅡ有效光化学效率(ΦⅡ)显著降低,而PSⅡ处调节性(ΦNPQ)和非调节性(ΦNO)能量耗散的量子产量显著升高。同时,红光育苗延迟定植后第1朵雌花开花时间,降低结果初期总瓜数和总产量;红蓝光组合处理的根冠比显著降低,而总叶面积、前20节位雌花数量和结果初期的总产量均显著增加;蓝光处理的株高和叶片数均显著降低,第1朵雌花开花时间提前。综上所述,红蓝光组合育苗显著提升黄瓜总叶面积,增加前20节位雌花数量和结果初期产量。
With LED light source,four light quality treatments(white light,red light,blue light,a combination of red and blue light)were carried out to investigate their effects on growth, photosynthetic characteristics,female number and yield in cucumber plants. The results showed that compared to white light,red light significantly inhibited cucumber growth,declined photosynthetic characteristics,decreased CO2 assimilation rate(Pn),electron transport rate in PSⅡ(ETRⅡ)and effective PSII quantum yield(ΦⅡ),whereas increased quantum yield of light-induced(ΦNPQ) and non-light-induced(ΦNO)non-photochemical fluorescence quenching. Meanwhile,red light delayed flowering time of first female flower,decreased cucumber numbers and total yield in initial stage. A combination of red and blue light significantly decreased root shoot ratio,however increased total leaf area,female flower numbers in the first 20 nodes and total yield in initial stage. Blue light decreased plant height and leaf numbers and accelerated flowering time of first female flower. In conclusion,a combination of red and blue light enhanced total leaf area,increased female flowers and initial yield in cucumber plants.
作者
苗妍秀
陈青云
曲梅
高丽红
侯雷平
李斌
MIAO Yanxiu;CHEN Qingyun;QU Mei;GAO Lihong;HOU Leiping;LI Bin(College of Horticulture,Shanxi Agricultural University,Taigu,Shanxi 030801,China;Collaborative Innovation Center of Quality and Profit Improvement for the Protected Vegetables of Shanxi Province,Taigu,Shanxi 030801,China;College of Horticulture,China Agricultural University,Beijing 100083,China)
出处
《园艺学报》
CAS
CSCD
北大核心
2019年第7期1388-1398,共11页
Acta Horticulturae Sinica
基金
山西农业大学博士科研启动项目(2016YJ08)
山西省重点研发计划重点项目子课题(201703D211001-04-03)
国家自然科学基金项目(31501806,31501807)
关键词
黄瓜
光质
生长
光合特性
开花时间
产量
cucumber
light quality
growth
photosynthetic characteristic
flowering time
yield
