دراسة تحليل المسار لبعض الأصناف المعتمدة من الرز (Oryza sativa L.)‎ في العراق

Abstract EN

Five Genotypes of Rice) Oryza sativa L.

( (Mishkab, Euphrates, Anbar, Yasmeen and Al-Baraka)were planted in tow different sites (Dhi-Qar and AL-Mishkab) in IRAQ during growing season 2014/2015 in Randomized Complete Block Design RCBD with three replications, in each location , Correlations and path coefficient were studied between some traits (Plant Height, Panicle Length, grain number per panicle, thousand grain weight) and Grain Yield.

Results showed that grain yield had a positive significant correlation with panicle length (0.544**) and negative significant correlation with Plant Height(- 0.830**).Results of path coefficient analysis showed that the direct effect of panicle length on grain Yield was high(0.314) while the indirect effect of panicle length through plant height was medium(0.2300), The direct effect of Plant Height and grain number per panicle and Thousand grain weight on Grain yield was negative for each of them.

Results also showed that the Studied traits contributed in Grain Yield with a percentage of (78.338)%, Which makes it possible to use as a standard recipe along the deltoid electoral quotient of grain to give it a higher correlation and the highest proportion of direct effect of the qualities in education and improvement of the studied varieties of rice crop programs.