A quick determination of root resistance to water transport in paddy rice
Hydraulic resistance in plants is one of the most important factors responsible for changes in leaf water potential that is an indicator of plant water stress. Although the hydraulic resistance to passive water transport (Rpa) is a robust index in paddy rice (Oryza sativa), measurement is both time-...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2017-07-01
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| Series: | Plant Production Science |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/1343943X.2017.1313688 |
| _version_ | 1818213829790662656 |
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| author | Shunsuke Adachi Taiichiro Ookawa Tadashi Hirasawa |
| author_facet | Shunsuke Adachi Taiichiro Ookawa Tadashi Hirasawa |
| author_sort | Shunsuke Adachi |
| collection | DOAJ |
| description | Hydraulic resistance in plants is one of the most important factors responsible for changes in leaf water potential that is an indicator of plant water stress. Although the hydraulic resistance to passive water transport (Rpa) is a robust index in paddy rice (Oryza sativa), measurement is both time-consuming and labour-intensive. Here, we describe on a quick method to measure hydraulic resistance to osmotic water transport (Ros) by measuring the xylem sap exudation rate and osmotic water potential. In a greenhouse experiment, Ros responded significantly to soil temperature, but under field conditions soil temperature varied considerably less than air temperature. In the field experiment, Ros of six rice cultivars at two growth stages was strongly positively correlated with Rpa. We conclude that measuring Ros could be used to evaluate root water transport capacity in paddy rice under conditions with adequate soil water. |
| first_indexed | 2024-12-12T06:10:31Z |
| format | Article |
| id | doaj.art-6b110e29ac26406999fbe0d9f3a4f4e8 |
| institution | Directory Open Access Journal |
| issn | 1343-943X 1349-1008 |
| language | English |
| last_indexed | 2024-12-12T06:10:31Z |
| publishDate | 2017-07-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Plant Production Science |
| spelling | doaj.art-6b110e29ac26406999fbe0d9f3a4f4e82022-12-22T00:35:10ZengTaylor & Francis GroupPlant Production Science1343-943X1349-10082017-07-0120327327810.1080/1343943X.2017.13136881313688A quick determination of root resistance to water transport in paddy riceShunsuke Adachi0Taiichiro Ookawa1Tadashi Hirasawa2Tokyo University of Agriculture and TechnologyTokyo University of Agriculture and TechnologyTokyo University of Agriculture and TechnologyHydraulic resistance in plants is one of the most important factors responsible for changes in leaf water potential that is an indicator of plant water stress. Although the hydraulic resistance to passive water transport (Rpa) is a robust index in paddy rice (Oryza sativa), measurement is both time-consuming and labour-intensive. Here, we describe on a quick method to measure hydraulic resistance to osmotic water transport (Ros) by measuring the xylem sap exudation rate and osmotic water potential. In a greenhouse experiment, Ros responded significantly to soil temperature, but under field conditions soil temperature varied considerably less than air temperature. In the field experiment, Ros of six rice cultivars at two growth stages was strongly positively correlated with Rpa. We conclude that measuring Ros could be used to evaluate root water transport capacity in paddy rice under conditions with adequate soil water.http://dx.doi.org/10.1080/1343943X.2017.1313688Hydraulic resistanceOryza sativaosmotic potentialwater potentialxylem sap |
| spellingShingle | Shunsuke Adachi Taiichiro Ookawa Tadashi Hirasawa A quick determination of root resistance to water transport in paddy rice Plant Production Science Hydraulic resistance Oryza sativa osmotic potential water potential xylem sap |
| title | A quick determination of root resistance to water transport in paddy rice |
| title_full | A quick determination of root resistance to water transport in paddy rice |
| title_fullStr | A quick determination of root resistance to water transport in paddy rice |
| title_full_unstemmed | A quick determination of root resistance to water transport in paddy rice |
| title_short | A quick determination of root resistance to water transport in paddy rice |
| title_sort | quick determination of root resistance to water transport in paddy rice |
| topic | Hydraulic resistance Oryza sativa osmotic potential water potential xylem sap |
| url | http://dx.doi.org/10.1080/1343943X.2017.1313688 |
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