Effect of Regulated Deficit Irrigation on Photosynthetic Physiological Characteristics and Quality of Isatis

WANG Yucai; DENG Haoliang; LI Fuqiang; WANG Zeyi; ZHANG Wanheng; HUANG Caixia; ZHANG Hengjia

doi:10.13870/j.cnki.stbcxb.2017.06.045

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Effect of Regulated Deficit Irrigation on Photosynthetic Physiological Characteristics and Quality of Isatis

更新时间：2025-03-12

- Effect of Regulated Deficit Irrigation on Photosynthetic Physiological Characteristics and Quality of Isatis
- Vol. 31, Issue 6, Pages: 291-295(2017)
- 作者机构：
  
  甘肃农业大学水利水电工程学院,兰州,730070
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2017.06.045
  CLC： S274.1
- Published：2017
- 稿件说明：
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WANG Yucai, DENG Haoliang, LI Fuqiang, et al. Effect of Regulated Deficit Irrigation on Photosynthetic Physiological Characteristics and Quality of Isatis[J]. 2017, 31(6): 291-295.
DOI：

WANG Yucai, DENG Haoliang, LI Fuqiang, et al. Effect of Regulated Deficit Irrigation on Photosynthetic Physiological Characteristics and Quality of Isatis[J]. 2017, 31(6): 291-295. DOI： 10.13870/j.cnki.stbcxb.2017.06.045.

摘要

于2016年在张掖市民乐县益民灌溉试验站开展了菘蓝不同生育期水分亏缺试验研究。在保持苗期和肉质根成熟期充分灌溉的情况下，对菘蓝的营养生长期和肉质根生长期分别进行轻度、中度和重度的水分亏缺处理，进行菘蓝光合生理指标和品质的测定。结果表明：营养生长期和肉质根生长期的中度和重度水分亏缺对菘蓝叶片净光合速率、蒸腾速率和气孔导度降低程度最为显著，且随着水分亏缺程度越高，降幅越大。WD5处理的菘蓝综合品质最优，其靛蓝、靛玉红、(R

S)-告依春含量比对照组CK处理分别高出9.1%，5.3%，7.0%，其他处理随着连续生育期的中轻度水分亏缺程度的增加，菘蓝品质有所提高，但是重度水分亏缺（WD3、WD8和WD9）不利于有效成分的积累。因此，膜下滴灌水分调节降低菘蓝光合速率、蒸腾速率和气孔导度，提高了水分利用效率，并且在营养生长期和肉质根生长期的轻中度水分亏缺有助于改善菘蓝品质。

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%

9.1% 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.

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