Impact of spraying with Jasmonic acid and Ennne's nutrient solution on some anatomical characteristics and Jasmonic content of blood orange seedlings

Abstract

In order to determine the effect of spraying with Jasmonates (JA) and adding the nutrient solution Ennne on the anatomical characteristics and jasmonic content of blood orange seedlings, an experiment was conducted in the wooden canopy of the College of Agriculture/ Samarra University from 1/9/2021 to 1/9/2022. The seedlings were sprayed with three Concentrations of Jasmonates (JA) (0, 5, and 10 mg.L-1) and the addition of three levels (0, 2.5 and 5 ml.L-1). The first day of spraying was September 1, 2021, the second day was 21 days later, and so on for the third and final day of spraying.

The results of the study are summarized as follows :

Spraying with the Jasmonates (JA) growth regulator, especially at the concentration of 10 mg.L-1, significantly increased the frequency of stomata, the average length and width of stomata, the average length*width of the lower surface of normal cells, the average length*width of the upper surface of normal cells, and the content of jasmonic in the leaf. The mean values for the comparison group were the lowest for length (222.11 mm), width (36.11 m), height (23.44 m), thickness (1015.4 m), width (914.3 m), and weight (66.5 mg.kg-1).

Spraying with Ennne's nutrient solution, especially at the level of 5 ml.L-1, significantly increased the frequency of stomata, the average length and width of stomata, the average length * width of lower surface of normal cells, the average length * width of upper surface of normal cells, and the jasmonic content of the leaves, which were respectively 223.44 mm, 33.89 m., 20.67 m, 980.3 There were substantial changes in all of the features tested due to the interaction of jasmonic acid and the nutritional solution Ennne, with the treatment G2M2 achieving the highest average for the aforementioned qualities and the treatment G0M0 achieving the lowest average.