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Relations betweeen physiological traits and grain yield in barley unders saline condition
conference contribution
posted on 2023-05-23, 17:39 authored by Zhu, M, Sergey ShabalaSergey Shabala, Svetlana ShabalaSvetlana Shabala, Peter JohnsonPeter Johnson, Meixue ZhouMeixue ZhouSalinity affects crop production worldwide and the success of breeding barley for salinity tolerance relies on the availability of efficient screening tools. In this paper, 3 major contributors to salinity were found by regression analysis in 13 barleys: fresh weight, dry weight, stomatal conductance. Through correlating between actual grain yield and predicted value, r2 value is 0.9285, which means that we can predict the salt tolerance by determining these 3 physiological traits. Based on cluster analysis, it was also found that higher K+ content in leaf and lower Na+/K+ ratio in xylem can promise better performance in salt stress (TX, YYXT & ZUG293). The contrary instance can be observed in Franklin, Gairdner and NN which are all thought as salt sensitive genotypes. So we might deduce that stomatal density and potassium content in shoot and ratio of Na+/K+ in xylem sap are critical factors of the mechanism of salt tolerance.
Funding
Grains Research & Development Corporation
History
Publication title
The 16th Australian Barley Technical SymposiumDepartment/School
Tasmanian Institute of Agriculture (TIA)Publisher
Australian Barley Technical Symposium IncPlace of publication
Melbourne, VictoriaEvent title
The 16th Australian Barley Technical SymposiumEvent Venue
Melbourne, VictoriaDate of Event (Start Date)
2013-09-08Date of Event (End Date)
2013-09-11Repository Status
- Restricted