水土保持学报2017，Vol.31Issue(6)：291-295,325,6.DOI:10.13870/j.cnki.stbcxb.2017.06.045
调亏灌溉对菘蓝光合特性及品质的影响
Effect of Regulated Deficit Irrigation on Photosynthetic Physiological Characteristics and Quality of Isatis
摘要
Abstract
The effects of irrigation schedule on photosynthetic characteristics and quality biological characteristics during different growth stages of isatisindigotica were studied in Yimin Irrigation District of Gansu Province in 2016.With the normal water condition in seedling stage and fleshy root maturity stage,the photosynthetic physiological characteristics and quality of Isatis were measured under mild,moderate and severe water deficit treatments in vegetative stage and fleshy root growth stage.The results showed that the leaf net photosynthetic rate (Pn),stomatal conductance (Gs) and transpiration rate (Tr) of Isatis were decreased most significantly for Moderate and severe water deficit in vegetative nd fleshy root growth stages,and with the higher degree of water deficit,the greater the decrease.The comprehensive quality of WD5 was the best,the Indigo,Indirubin and (R,S)-goitrin contents of WD5 were 9.1％,5.3％,7.0％ higher than CK respectively,quality of other treatments were improved moderately with the increasing in mild water deficit,but severe water deficit was not conducive to the accumulation of active ingredients.Therefore,water deficit of Isatis under mulched drip irrigation reduced Pn,Gs and Tr,improved the water use efficiency,and mild to-moderate water deficit was helpful to improving the quality of Isatis.关键词
水分亏缺/光合生理特性/品质/菘蓝Key words
water deficit/photosynthetic physiological characteristics/quality/Isatis分类
农业科技引用本文复制引用
王玉才,邓浩亮,李福强,王泽义,张万恒,黄彩霞,张恒嘉..调亏灌溉对菘蓝光合特性及品质的影响[J].水土保持学报,2017,31(6):291-295,325,6.基金项目
国家自然科学基金项目(51669001) （51669001）
甘肃农业大学盛彤笙科技创新基金项目(GSAU-STS-1744) （GSAU-STS-1744）
