Shams Jassim(1)* and Jinan M. Kalaf(1)
(1).Department of Plant Protection,College of Agriculture, University of Basrah, Basrah-Iraq.
(*Corresponding author: Shams Jassim, E.mail: pgs.shams.jassim@uobasrah.edu.iq)
Received: 21/09/2024 Accepted: 11/12/2024
Abstract:
in the laboratories of the Marine Science Center and the Agricultural Research Station of the College of Agriculture / University of Basra in the agricultural season 2023-2024. The aim of the study was to estimate the biochemical and anatomical characteristics of four varieties of the eggplant plant and their impact on the infection of a cotton pest Aphis gossypii.where the numerical density of the insect was recorded during the study period and analyzes of the leaves of the eggplant plant for the purpose of knowing the biochemical characteristics, conducting an autopsy of the leaves of the eggplant plant for the purpose of knowing the anatomical characteristics and the extent of the impact of these traits in infection with an insect of cotton A.gossypii. The results of the study of the numerical density of a cotton insect A. gossypii on eggplant varieties (Nasr, Jawaher, Barcelona, Kipto), showed that the highest average numerical density of a cotton insect was during the month and March, and amounted to 54.13 insects / leaf, and the lowest rate was in May and amounted to 10.45 insects / leaf. The highest rate of numerical density of the insect was recorded on the Nasr variety at 54.31 insects / leaf, and the lowest rate on the variety Kipto was 24.19 insects / leaf. The results also showed that the value of chlorophyll A for the four classes Nasr, Jawaher, Barcelona, Kipto, amounted to 0.165, 0.1645, 0.1635, 0.1631 mg / g. The chlorophyll value is 0.308, 0.3071, 0.2998, 0.2906 mg/g. The total chlorophyll value was 0.47, 0.47, 0.46 and 0.45 mg/g, respectively. Carotene was 2.232, 2.155, 2.117, 2.087 mg/ml. The phenols value is 4.88, 5.89, 6.32, 6.84 mg/g. The nitrogen content was 0.28, 0.14, 0.14, 0%. The phosphorus value was 0.016, 0.019, 0.022,0.027, mg / l. potassium 3.55, 5.33, 5.925, 8.299 mg/g. Protein ratios are 1.75, 0.875, 0.875, 0%, respectively. The results of the autopsy of the leaves of the eggplant plant for the four healthy varieties showed differences and differences in the studied anatomical characteristics.
Keywords: Aphis gossypii, biochemical characteristics, anatomical characteristics , eggplant
Full paper in Arabic: pdf