Back to Search
Start Over
Methods to estimate changes in soil water for phenotyping root activity in the field
- Source :
- Plant and Soil
- Publication Year :
- 2017
- Publisher :
- Springer Nature, 2017.
-
Abstract
- Background and aims There is an urgent need to develop new high throughput approaches to phenotype roots in the field. Excavating roots to make direct measurements is labour intensive. An alternative to excavation is to measure soil drying profiles and to infer root activity. Methods We grew 23 lines of wheat in 2013, 2014 and 2015. In each year we estimated soil water profiles with electrical resistance tomography (ERT), electromagnetic inductance (EMI), penetrometer measurements and measurements of soil water content. We determined the relationships between the measured variable and soil water content and matric potential. Results We found that ERT and penetrometer measurements were closely related to soil matric potential and produced the best discrimination between wheat lines. We found genotypic differences in depth of water uptake in soil water profiles and in the extent of surface drying. Conclusions Penetrometer measurements can provide a reliable approach to comparing soil drying profiles by different wheat lines, and genotypic rankings are repeatable across years. EMI, which is more sensitive to soil water content than matric potential, and is less effective in drier soils than the penetrometer or ERT, nevertheless can be used to rapidly screen large populations for differences in root activity. Electronic supplementary material The online version of this article (doi:10.1007/s11104-016-3161-1) contains supplementary material, which is available to authorized users.
- Subjects :
- 0106 biological sciences
Methods Paper
Soil Science
Soil science
RRES175
Plant Science
Penetrometer
01 natural sciences
law.invention
law
Water uptake
175_Plant sciences
EMI
Soil drying
2. Zero hunger
04 agricultural and veterinary sciences
15. Life on land
Roots
Water potential
Phenotyping
Soil water profiles
175_Soil science
Soil water
040103 agronomy & agriculture
0401 agriculture, forestry, and fisheries
Environmental science
ERT
010606 plant biology & botany
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- Plant and Soil
- Accession number :
- edsair.doi.dedup.....e6fc6f7a0f690603b4ee3b95f2ad612a