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| Article Name : | | | BIOFERTILIZATION OF MAIZE GROWN UNDER SALINITY STRESS WITH AZOTOBACTER AND ITS IMPACT ON ROOT ANATOMICAL STRUCTURE | | Author Name : | | | Mahdi M. Almutawa , Afnan F. Najjar , Fahad A. Al-Fassi and Abu-Bakr M. Gomaa | | Publisher : | | | Ashok Yakkaldevi | | Article Series No. : | | | ROR-1273 | | Article : | |  | Author Profile | | Abstract : | | | A pot experiment was conducted in the greenhouse of the Faculty of Science, King Abdulaziz University on maize plants to study the impact of different salinity levels, i.e. 0, 1500 and 3000 ppm either in the presence or absence of Azotobacter chroococcumon maizeroots anatomical analysis. The mineral fertilization treatment with NPK (as a positive control) was resulted in smaller compacted and pressed cortical cells on the outer layers of cortical zone; however, the inner cortical zone was completely devoid of any traces of cortical cells. The area occupied by vascular tissue clearly revealed complete disruption of connective tissue. The interaction between NPK and salinity level of 1500 resulted in abnormal outline shape of root-cross section which tended to increase in length by 10% more than the treatment with NPK alone.Both salinity levels reduced stele diameters (length and width) with 4.76 and 23.81% respectively in comparison with the control treatment of mineral fertilization with NPK. The same trend was recorded with the number and thickness of metaxylem vessels where the reduction percent reached 47.05. | | Keywords : | | - roots anatomical structure
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