Determination of Physiological Traits for Growth Analysis in some Bread Wheat (Triticum aestivum L.) Cultivars

ABSTRACT: The purposes of this study are to determine the growth parameters using in growth analysis of late period of wheat and to estimate the correlation coefficient between growth parameters and yield and yield components. In six bread wheat varieties suitable for Aegean Region, growth parameters were determined between flag leaf just visible (zadox 37-39) and ripening (zadox 85-91). The total dry matter increased until the milk and dough development period and then decreased, while leaf area index continuously declined after beginning of anthesis. A decreasing second-degree polynomial was described for net assimilation rate and relative growth rate due to dry matter and leaf area index. The positive and significant correlation coefficients were estimated between yield and leaf area index. It should be concluded that the (LAR) confirms the positive and significant relation of the duration of greenness on the yield and yield components during further development periods