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ID 908
Eprint ID
908
FullText URL
Title Alternative
イネの根における塩排除効率のイオン種による差異
Author
Tsuchiya, Mikio
Naito, Hitoshi
Takagi, Yumi
Kumano, Seiichi
Abstract
We investigated the exclusion rate of some ion species in order to discover the features of salt exclusion in rice roots. TSCF of each cation was negatively correlated with the transpiration rate as in the case of Na+. These results indicated that ion exclusion rates change with the transpiration rate. At the same transpiration rate, TSCF of IR28 was lower than that of KR1, which indicated that exclusion efficiency was essentially higher in IR28. The differences in TSCF of K+, Ca2+ and Mg2+ between both varieties were relatively small compared with those of Na+ and Li+. These results indicated that the difference in exclusion rate between varieties was affected by ion species. TSCF at the same transpiration rate seemed to be larger with the decrease in radius of hydrated ion. From these results, it was suggested that the exclusion system of Na+ in rice under saline conditions also works for K+, Li+, Ca2+ and Mg2+, and is driven by transpiration. It was also noted that exclusion may be affected by the radius of hydrated ion.
Keywords
Rice Roots
Salt Exclusion Rate
Published Date
1993
Publication Title
岡山大学農学部学術報告
Publication Title Alternative
Scientific Reports of the Faculty of Agriculture Okayama University
Volume
volume82
Issue
issue1
Publisher
岡山大学農学部
Publisher Alternative
Faculty of Agriculture, Okayama University
Start Page
17
End Page
23
ISSN
0474-0254
NCID
AN00033029
Content Type
Departmental Bulletin Paper
language
英語
File Version
publisher
Refereed
False
Eprints Journal Name
srfa