3.1.4 Chlorophyll Contents
Data concerning Chlorophyll “a” presented in Table 1 demonstrated that
there were significant differences in chlorophyll “a” after different
level of drought stress. The mean value for chlorophyll “a” 1.186 was
recorded and under drought stress 80% FC the mean value for chlorophyll
“a” 1.041was recorded. Likewise under drought stress 60% FC the mean
value for chlorophyll “a” 0.542 was recorded as shown in Fig 1. The
results clearly indicate that different drought stress level effect the
chlorophyll content in all studied wheat genotypes. The least
significant difference (LSD) regarding chlorophyll “a” presented in
Table 3 showed that in 100% FC the chlorophyll “a’ content are not
significantly different and maximum chlorophyll “a” content 1.230 were
recorded for stay green chirya-1 genotype followed by SD-28 wheat
genotype. Similarly under drought stress 80% FC the mean maximum
chlorophyll a content 1.099 was recorded for SD-32 followed by Opata
wheat genotype. Similarly in drought stress 60% FC the maximum
chlorophyll “a’ content 0.576 was recorded SD 28 followed by stay green
chirya-1 genotype.
Data regarding chlorophyll “b” presented in Table 1 demonstrated that
drought stress can affect the chlorophyll “b” content. In control
condition 100% FC the mean value 1.108 was recorded and under drought
stress 80% Fc the mean value 0.926 was recorded. Likewise in drought
stress 60% FC the mean value 0.559 was recorded as shown in (Table 1
and Fig 4). The least significant difference (LSD) regarding chlorophyll
“b” presented in Table 3 revealed that in control condition 100% FC
the chlorophyll “b” content are not significantly different and
maximum chlorophyll “b” content 1.247 were recorded for stay green
chirya-1 genotype followed by Opata wheat genotype. Similarly under
drought stress 80% FC the maximum chlorophyll “b” content 1.159 was
recorded for stay green chirya-1 genotype followed by Opata wheat
genotype. Similarly in drought stress 60% FC the maximum chlorophyll
“b” content 0.576 was recorded SD 28 followed by stay green chirya-1
genotype.
The data regarding total chlorophyll presented in (Table 1) revealed
that drought stress affect the total chlorophyll content. The mean total
chlorophyll value under control condition 100% FC 2.295 and drought
stress 80% FC 1.968 mean value were recorded for total chlorophyll. In
drought stress 60% FC the mean value 1.101with CV 4.846 was recorded
shown in Fig 1. Analysis of variance (ANOVA) regarding Chlorophyll “a”
chlorophyll “b” and total chlorophyll presented in (Table 3.) showed
that drought stresses are highly significant and the response of
genotypes was also highly significant. The interaction of drought stress
and wheat genotypes was observed highly significant. The least
significant difference (LSD) regarding total chlorophyll presented in
Table 6 revealed that in control condition 100% FC the total
chlorophyll content are not significantly different and maximum total
content 2.477 were recorded for stay green chirya-1 genotype followed by
Opata wheat genotype. Similarly under drought stress 80% FC the maximum
total chlorophyll content 2.477 was recorded for Opata wheat genotype
followed by SD-28. Similarly in drought stress 60% FC the maximum total
chlorophyll content 1.143 was recorded for stay green chirya-1 genotype
followed by SD 28 wheat genotype. The Overall results regarding
chlorophyll contend suggested that different level of drought stress
highly affect the chlorophyll “a” “b” and total chlorophyll
contents. The results clearly indicate that stay-green chirya-1 genotype
perform well under drought stress condition regarding chlorophyll
content.