Multi scale analysis of the factors influencing wheat quality as determined by Gluten Index Academic Article uri icon


  • In recent years, the Israeli wheat industry has suffered from quality problems that can endanger the possibility of using the wheat to produce bread. The aim of this study is to understand how climatic and management factors, such as N fertilization, emergence date and wheat cultivar, affect the Gluten Index (GI) – a main wheat quality parameter in the Israeli commercial market. The study was undertaken at individual producer fields across southern Israel on three different scales: regional, farm, and the field. Overall, 1800 samples of 15 genotypes were collected, over three consecutive seasons, 2006–2008, from commercial fields throughout the area, from experiments conducted in the fields of the Gilat Research Center, and in the fields of Kibbutz Sa’ad. Climatic variables were mapped exclusively and on the basis of maximum temperature and rainfall data, and were collected in the course of the entire season and during certain periods. Relationships between climatic variables and GI were determined by multivariate regression analyses. On regional scale, the ability of explaining the differences was low, while on the

publication date

  • January 1, 2011