Variations in Hormones and Antioxidant Status in Relation to Flowering in Early, Mid, and Late Varieties of Date Palm (Phoenix dactylifera) of United Arab Emirates
Table 3
Variation in antioxidant enzyme activities at different stages of growth in the early, mid, and late varieties of date palm.
Variety
Growth stage
SOD
CAT
POX
APX
Nagal
Preflowering
0.433 ± 0.067a
0.665 ± 0.088c
0.559 ± 0.042a
0.830 ± 0.108a
Flowering
0.353 ± 0.045b
1.338 ± 0.044b
0.483 ± 0.025a
0.467 ± 0.041b
Postflowering
0.384 ± 0.017b
1.755 ± 0.187a
0.227 ± 0.033b
0.447 ± 0.123b
Khalas
Preflowering
0.426 ± 0.096a
0.116 ± 0.006a
0.165 ± 0.014a
2.158 ± 0.048a
Flowering
0.501 ± 0.092a
0.110 ± 0.021a
0.263 ± 0.072a
1.820 ± 0.039a
Postflowering
0.210 ± 0.063b
0.100 ± 0.007a
0.049 ± 0.017b
1.338 ± 0.068b
Lulu
Preflowering
0.526 ± 0.064a
1.035 ± 0.066b
0.729 ± 0.053a
0.935 ± 0.104a
Flowering
0.468 ± 0.045b
1.958 ± 0.094a
0.341 ± 0.029b
0.516 ± 0.046b
Postflowering
0.390 ± 0.017b
1.805 ± 0.120a
0.658 ± 0.035a
0.619 ± 0.172b
SOD: superoxide dismutase, CAT: catalase, POX: peroxidase, and APX: ascorbate peroxidase. Means with different letters in the same variety indicate significantly different values at < 0.05.