Assessment of the Correlation between Chlorophyll Content and Drought Resistance in Corn Cultivars (Zea Mays)

Abstract

The most critical issue regarding plants production is drought stress. Due to the near dating amongst leaves chlorophyll content within the plant achievement prices for photosynthesis and their resistance against the environmental strain, it may be beneficial to decide on varieties (cultivars) associated with superfluous chlorophyll content in the breeding (Revisory) programs. Thus, to assess the relationship between chlorophyll strain resistances in the experimental maize cultivars, we used 4 replications of five Maize genotypes with both irrigation and dry farming using the randomized entire block layout in 2016-17 agricultural year in Ardabil. We used Fernandez strain tolerance indices to calculate the strain tolerance of different genotypes. Besides, we used CCI-2 hundred tool to measure the leaves chlorophyll content. The results showed that strain-resistant genotypes which provided superior capability yield as well as 1.2 fold chlorophyll content compared with the resistant cultivars. Accordingly, genotypes 1 and 5 had the maximum chlorophyll content and the highest quantity of yield and thus, these genotypes are the maximum resistant genotypes against the drought. Moreover, further studies are required to choose genotypes compatible with dry situations.