ISSN: 2578-4994
Authors: Belay Fufa* and Edith V Lammerts
Composite crossed population is one of the strategies that can suitable under organic agriculture condition to buffer against fluctuation environments hence these Composite have inherent genetic variability. The objective of the stduy was to asses several generations of composite crossed populations of wheat for grain yield, yellow rust and important traits under organic farming. The ANOVA revealed that no significant difference observed among several generations of composite wheat population for yield whereas significant (p=0.002) difference for thousand kernel weight. Composite population of I had high thousand kernel weight (43.22 g) and the lowest recorded for pure line (37.42 g). A highly significant difference (P<0.05) observed among composite crossed population for strip rust incidence and severity across phenological growths. The highest yellow rust incidence (92.00 %) was recorded for pure line and followed by two old population at milk stage. Even though diversity within composite crossed limit the spread of disease expansion, several generations of composite populations exhibited similar grain yield as pure line. Threfore, further study is required using diversity of wheat and vareint alleles to combine and develop resilience cultivar to optimaize yield, resitance to disease and nutrient use efficiency under organic conditions in their ecological farming system.
Keywords: Composite Crossed Populations; Resilance; Yield; Organic Farming; Wheat
