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.