Ecology, Environment and Conservation Paper

Vol 26, Issue 1, 2020; Page No.(248-256)

EVALUATION OF THE PERFORMANCE OF FOUR GENOTYPES OF CORN (ZEA MAYS L.) AND PATH COEFFICIENT ANALYSIS BY BACTERIAL BIOFERTILIZERS EFFECTS

Jassim Jawad Jader Alnuaimi, Ali S. Hassoon and Ali Ahmed Hussein Almyali

Abstract

A field experiment was conducted in the Musayyib project area in Babil province during the autumn season 2018 with the aim of selecting an effective bacterial vaccine from combinations of three different types of Rhizobium spp. With Azospirillum brasilense bacteria as biofertilizers and their effect on four genotypes of yellow maize (5012, Research 106, 5017 and 5018) the design of complete random segments and three replicates was used. The results showed superiority of A. brasilense treatment with R. leguminosarum (AZ. + RL2) in plant height, foliar area, longevity of larvae, number of grains per larvae, plant yield and total yield Genotypes did not differ among the studied traits. As for the intervention, treatment (AZ. + RL2) outperformed half of the recommended fertilizer and genotype 5018 in most studied traits. The number of plant arains showed a higher genetic and phenotypic negative correlation with grain yield (0.111-, 0.039-). The analysis of the genetic and phenotypic pathway coefficient showed that the number of grains in Arouss gave the highest positive direct phenotypic effect on grain yield (8,31822) and genetically negative (0,1067).

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