Abstract

A factorial experiment was conducted in the winter season 2021-2022 At the Daquq research
station to find out the effect of three concentrations (0, 2.5, and 5) g-1 of compound nanofertilizer
NPK and the response of ten flax genotypes to some growth traits and components
yield. Phenotypic, genetic, and environmental correlations and path coefficient analysis. The
phenotypic correlation had a significant effect with the plant height and stem diameter which
amounted to -0.454*, -0.416* respectively with the grain yield at the fertilizer concentration
(0), the number of main branches, and the biological yield with the grain yield which amounted
to 0.373*, -0.367* at the fertilizer concentration (5). The total effects of the path coefficient for
all traits were very high for the trait of the biological yield which amounted to 1.52221, and
high for the number of secondary branches, which amounted to 0.81608 at the fertilizer
concentration (0) g-1. As for the total effects for all traits, their values were very high for stem
diameter biological yield and harvest index, which amounted to 1.09091, 1.10793, 1.00825,
Respectively and high for the number of seeds per capsule which amounted to 0.41652, at a
fertilizer concentration (2.5) g-1, and the total effects for all traits were Its values were very high
for the biological yield and harvest index, as it reached 1.21802, 2.6266, Respectively and high
for the stem diameter which reached 0.5223, at the fertilizer concentration (5) g-1. The
phenotypic variance was significant for all studied traits at the fertilizer concentration (0, 2.5,
and 5). The values of heritability were high for chlorophyll index, plant height, number of
secondary branches per plant, weight of 1000 seeds, biological yield at fertilizer concentration
(0), and for chlorophyll index plant height stem diameter number of main branches number of
secondary branches number of capsules and weight of 1000 seeds. The biological yield and the
harvest index at the fertilizer concentration (2.5), the harvest index the plant height the number
of main branches, the number of secondary branches, the number of seeds in the capsule, the
weight of 1000 seeds, and the biological yield at the fertilizer concentration (5). The expected
genetic advance as a percentage was high for the number of capsules per plant and the biological
yield at the fertilizer concentration (0), the number of secondary branches the number of
capsules per plant the weight of 1000 seeds the biological yield at the fertilizer concentration
(2.5) g and the biological yield at the fertilizer concentration (5)