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Relations betweeen physiological traits and grain yield in barley unders saline condition


Zhu, M and Shabala, SN and Shabala, L and Johnson, PG and Zhou, M, Relations betweeen physiological traits and grain yield in barley unders saline condition, The 16th Australian Barley Technical Symposium, 8-11 September 2013, Melbourne, Victoria (2013) [Non Refereed Conference Paper]


Salinity 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.

Item Details

Item Type:Non Refereed Conference Paper
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Crop and pasture production
Research Field:Crop and pasture improvement (incl. selection and breeding)
Objective Division:Plant Production and Plant Primary Products
Objective Group:Grains and seeds
Objective Field:Barley
UTAS Author:Zhu, M (Ms Min Zhu)
UTAS Author:Shabala, SN (Professor Sergey Shabala)
UTAS Author:Shabala, L (Associate Professor Lana Shabala)
UTAS Author:Johnson, PG (Dr Peter Johnson)
UTAS Author:Zhou, M (Professor Meixue Zhou)
ID Code:85567
Year Published:2013
Deposited By:Tasmanian Institute of Agriculture
Deposited On:2013-07-18
Last Modified:2014-04-29

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