根部照光对叶用甜菜生长及光合特性的影响  被引量:1

Effects of root illumination on the growth and photosynthetic characteristics of leaf beet

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作  者:曾玉兰 鲁娜[2] 高垣美智子 王夏夏 朱月林[1] ZENG Yulan;LU Na;TAKAGAKI Michiko;WANG Xiaxia;ZHU Yuelin(College of Horticulture,Nanjing Agricultural University,Nanjing 210095,China;Center for Environment,Health and Field Science,Chiba University,Chiba 277-0882,Japan)

机构地区:[1]南京农业大学园艺学院,南京210095 [2]千叶大学环境健康田间科学中心,千叶县277-0882

出  处:《上海农业学报》2022年第6期29-35,共7页Acta Agriculturae Shanghai

基  金:江苏高校优势学科建设工程资助项目(2020PAPD)。

摘  要:通过研究根部照光对叶用甜菜(Beta vulgarisL.cv.Baby leaf)生长发育、光合特性和营养品质的影响,旨在为植物工厂条件下叶用甜菜生产的光照模式优化提供依据。本试验设置不同的根部照光光强度[光量子通量密度(PPFD)分别设置为0、30μmol·m^(-2)·s^(-1)、60μmol·m^(-2)·s^(-1)、90μmol·m^(-2)·s^(-1)],其中光强度0为对照(CK)。结果表明:在根部照光60μmol·m^(-2)·s^(-1)条件下,叶片中叶绿素和花青素含量显著高于对照;根部照光90μmol·m^(-2)·s^(-1)处理下叶片净光合速率显著高于对照;对根部照光60μmol·m^(-2)·s^(-1)和90μmol·m^(-2)·s^(-1)处理显著提高了植株生物量和叶片蒸腾速率,降低了细胞间CO_(2)浓度;根部照光30μmol·m^(-2)·s^(-1)、60μmol·m^(-2)·s^(-1)和90μmol·m^(-2)·s^(-1)条件下,叶片总酚含量和抗氧化活性显著高于对照,根长度显著低于对照。以上结果显示,根部照光处理可显著提高叶用甜菜植株的生物量和总抗氧化能力,该研究为植物工厂内叶用甜菜生产的光照模式提供了新的思路。The effects of root illumination on the growth,photosynthetic characteristics and nutritional quality of the leaf beet(Beta vulgarisL.cv.Baby leaf)were studied for providing the basis for the optimization of the lighting mode of leaf beet production under plant factory conditions.In this experiment,the root illumination intensities of PPFD 0,30 μmol·m^(-2)·s^(-1),60 μmol·m^(-2)·s^(-1),90 μmol·m^(-2)·s^(-1)were designed by taking PPFD0 as the control.Compared with the control,the following results were obtained.The contents of chlorophyll and anthocyanin in the leaves under root illumination at PPFD 60 μmol·m^(-2)·s^(-1)were significantly increased.The net photosynthetic rate of the leaves under root illumination at PPFD 90 μmol·m^(-2)·s^(-1)was significantly enhanced.The biomass of plants and leaf transpiration rate were significantly elevated,and the intercellular CO_(2) concentration was significantly reduced under root illumination at PPFD 60 μmol · m^(-2)· s^(-1)and 90 μmol·m^(-2)·s^(-1).The total phenols content and antioxidant activity in the leaves were significantly increased and the root length was significantly reduced under root illumination at PPFD 30 μmol·m^(-2)·s^(-1),60 μmol·m^(-2)·s^(-1)and 90 μmol·m^(-2)·s^(-1).The above results indicated that the biomass and antioxidant capacity of the leaf beet plants can be improved by root illumination.The present study provides a novel idea for the lighting mode of leaf beet production in the plant factory.

关 键 词:叶用甜菜 光感受器 LED 根部照光 生物量 营养品质 

分 类 号:S566.3[农业科学—作物学]

 

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