
%0 Journal Article
%A Yau, S. K. 
%A Nachit,, M. 
%A Ryan, J. 
%T Variation in growth, development, and yield of durum wheat in response to high soil boron. II. Differences between genotypes
%J Australian Journal of Agricultural Research
%D 1997/10/07
%V 48
%N 7
%P 951-958
%K boron toxicity, foliar symptom, phenotypic variation, shoot boron concentration, yield components.
%R https://doi.org/10.1071/A96145
%U https://www.publish.csiro.au/paper/A96145 
%X This greenhouse study examined the variation in growth, development, and yield between 9 durum wheat (Triticum turgidum L. var. durum Desf., syn. T. durum) lines in response to high soil boron (B) levels. The lines were selected to represent the range of B-toxicity tolerance in an earlier screening experiment. Three soil B levels (hot-water extractable B concentrations of 0&#183;3, 7&#183;1, and 17&#183;4 mg/kg, designated as B0, B25, and B50, respectively) were set up by mixing different amounts of boric acid with soil. Foliar B-toxicity symptom score, dry weight, and shoot-B concentration were measured at tillering. Agronomic traits and yield were measured. There were differential responses to high soil B levels between the durum lines. The boron&#215;line interaction was significant for B-toxicity symptom score and shoot-B concentration. Based on these 2 characters, and percentage of shoot dry weight and grain yield reduction from B0 to B50, Oued Zenati, Omrabi-5, and Gezira-17 were the most tolerant of the 9 durum lines, yet they were less tolerant to high soil B levels than the tolerant bread-wheat check, Halberd. Nonetheless, until more tolerant materials are developed, these moderately tolerant durum lines could still be useful for areas, like southern Australia, where B toxicity is a problem. 
