Association between the set of macro and micro climatic parameters with the set of wheat crop growth parameters: Redundancy analysis with Monte Carlo permutation tests

Plants are affected by the environment during all phases of growth and development. Based on the measured data of wheat crop during 2009-12, the redundancy analysis (RDA) were used to analyze the variations of wheat crop growth parameters response, identify the key environmental factors (macro and micro climatic parameters) and their patterns influencing the variation of the growth parameters of wheat crop. Monte Carlo tests for the first and all canonical axes were highly significant as low inflation factors (<5), indicating that selected X set (macro-micro climatic) parameters in which micro parameters were important in explaining the Y set (LAI and plant height including yield) responses of wheat crop through RDA using CANOCO 4.5 Windows software. All selected environmental factors explained 79.5% of the variation of growth responses of wheat crop.