Agriculture Reference
In-Depth Information
A significant impact of the fertilizer type on the content of identified phenolic acids
(ellagic, gallic, protocatechuic) in this study, except
p
-coumaric, is reported in Table 5. The
highest levels of ellagic, gallic and protocatechuic acids were registered in the biofertilizer
treatment (14.43, 2.19, and 0.15 mg/100 g FW, respectively).
As far as the effect of cultivar is concerned, it was observed that the ellagic acid content
was not the only trait that was significantly influenced by this factor, since it was established
that the 'Dely' cultivar also contained higher quantities of ellagic, gallic,
p
-coumaric and
protocatechuic acids (14.19, 2.35, 0.95 and 0.18 mg/100 g FW, respectively).
In terms of the
interaction effect of the fertilizer type and cultivar, the only significant
differences observed were those in the content of
p
-coumaric acid
(Figure 2).
The anthocyanins content (cyanidin-3-glucoside and pelargonidin-3-glucoside) in the
fruits of cvs 'Clery', 'Joly' and 'Dely' subjected to analysis of variance showed a significant
effect of the fertilizer and the cultivar, as well as their interactions (Table 6 and Figures 3, 4).
The results indicate that the biofertilizer treatment enhanced
levels of cyanidin
-3-glucoside
and
pelargonidin-3-glucoside
in strawberry fruits achieving approximately 2-fold higher
values than those obtained in the chemical fertilizer treatment.
Table 5. The influence of the fertilizer type and cultivar on the phenolic acids content in
strawberry fruits
Factor
Fenollic acids content (mg/100 g fw)
Ellagic
Gallic
p
-Coumaric
Protocatechuic
Biofertilizer
14.43±1.02a
2.19±0.21a
0.73±0.12a
0.15±0.01a
Fertilizer (A)
Chemical
fertilizer
9.77±0.67b
1.21±0.19b
0.71±0.15a
0.12±0.01b
'Clery'
11.05±1.37a
1.69±0.27b
0.42±0.08b
0.12±0.01b
'Joly'
11.06±1.23a
1.05±0.25c
0.78±0.22ab
0.12±0.01b
Cultivar (B)
'Dely'
14.19±0.98a
2.35±0.19b
0.95±0.14a
0.18±0.00a
'Clery'
14.08±2.03a
2.24±0.43a
0.36±0.01b
0.14±0.01a
Biofertilizer
'Joly'
12.96±2.23a
1.67±0.34a
0.46±0.06b
0.13±0.02a
Fertilizer
x
Cultivar
(A x B)
'Dely'
16.26±0.61a
2.66±0.20a
1.38±0.10a
0.19±0.01a
'Clery'
8.03±0.65a
1.14±0.15a
0.49±0.15b
0.09±0.01a
Chemical
fertilizer
'Joly'
9.16±0.48a
0.44±0.04a
1.11±0.41a
0.10±0.01a
'Dely'
12.11±1.46a
2.05±0.28a
0.53±0.01b
0.18±0.00a
ANOVA
A
*
*
ns
*
B
ns
*
*
*
A x B
ns
ns
*
ns
Means of 2-year values with three replicates ± standard error.
Values within each column followed by the different small letters are significantly different at the
p≤0.05
by LSD test.
ns - non significant differences.
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