In plant factory with artificial lighting,precise regulation of environmental and nutritional factors is essential to optimize both growth and quality of leafy vegetables.This study systematically evaluated the combin...In plant factory with artificial lighting,precise regulation of environmental and nutritional factors is essential to optimize both growth and quality of leafy vegetables.This study systematically evaluated the combined effects of light intensity(150,200,250μmol/(m^(2⋅)s))and calciumsupply in the nutrient solution(0.5,1.0,1.5 mmol/L)on lettuce morphology,photosynthesis,quality indices,and tipburn incidence.Elevating light from150 to 200μmol/(m^(2)⋅s)significantly enhanced leaf number,area,photosynthetic rate,biomass,and foliar calcium.These gains plateaued at 250μmol/(m^(2)⋅s),where tipburn incidence surged to 76.5%.Photosynthetic pigments progressively rose with light intensity.Calcium supply showed limited morphological influence but proved critical under high light(250μmol/(m^(2)⋅s)):increasing calcium to 1.5 mmol/L significantly boosted vitamin C and soluble sugars while reducing nitrate accumulation and suppressing tipburn to 12.8%.Elevated calcium also partially compensated for growth and quality limitations under low light through compensatory effects.Results demonstrated light intensity as the dominant factor governing morphogenesis and photosynthetic capacity,these findings establish that coordinated optimization of light and calcium inputs is crucial for simultaneously improving lettuce yield,nutritional quality,and marketability in controlled environments.This study provides both theoretical insights and practical guidance for efficient and safe leafy vegetable cultivation in controlled environments.展开更多
基金supported by the National Natural Science Foundation of China(grant no.42307428)the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD-2023-87)+3 种基金the Key Laboratory of Desert–Oasis Crop Physiology,Ecology and Cultivation,MOARAF,(project no.xjnkywdzc-2025002-01-03)the National Key Laboratory of Wheat Improvement of China(KFKT202507)the Key Laboratory for Crop Production and Smart Agriculture of Yunnan Province(project no.2024ZHNY03)the Key Laboratory of Spectroscopy Sensing,Ministry of Agriculture and Rural Affairs,China(project no.2024ZJUGP002).
文摘In plant factory with artificial lighting,precise regulation of environmental and nutritional factors is essential to optimize both growth and quality of leafy vegetables.This study systematically evaluated the combined effects of light intensity(150,200,250μmol/(m^(2⋅)s))and calciumsupply in the nutrient solution(0.5,1.0,1.5 mmol/L)on lettuce morphology,photosynthesis,quality indices,and tipburn incidence.Elevating light from150 to 200μmol/(m^(2)⋅s)significantly enhanced leaf number,area,photosynthetic rate,biomass,and foliar calcium.These gains plateaued at 250μmol/(m^(2)⋅s),where tipburn incidence surged to 76.5%.Photosynthetic pigments progressively rose with light intensity.Calcium supply showed limited morphological influence but proved critical under high light(250μmol/(m^(2)⋅s)):increasing calcium to 1.5 mmol/L significantly boosted vitamin C and soluble sugars while reducing nitrate accumulation and suppressing tipburn to 12.8%.Elevated calcium also partially compensated for growth and quality limitations under low light through compensatory effects.Results demonstrated light intensity as the dominant factor governing morphogenesis and photosynthetic capacity,these findings establish that coordinated optimization of light and calcium inputs is crucial for simultaneously improving lettuce yield,nutritional quality,and marketability in controlled environments.This study provides both theoretical insights and practical guidance for efficient and safe leafy vegetable cultivation in controlled environments.
文摘构建大白菜分子遗传图谱,为大白菜干烧心QTL定位和分析奠定基础。以大白菜感病品种B120和大白菜抗病品种黑227为亲本建立的DH系为作图群体,基于所筛选出的74对In Del标记和37对SSR标记构建分子遗传图谱。利用Join Map 4.0软件,初步构建了一张覆盖基因组长度为1 004.7 c M、平均图距为9.30 c M的大白菜遗传连锁图,该图谱包含12个连锁群、108个标记位点。该图谱能有效地用于大白菜干烧心QTL定位。
