Differential Responses Modeling Of Some Cotton (Gossypium Barbadense L.) Cultivars For Salinity Stress Condition Using NanoFertilize

Abstract

It's no doubt that, the high costs of fertilization under Egyptian lands affected by salinity is considered one of the main
challenges in agriculture sector. So, this investigation was carried out to assessment the performance of five Egyptian
cotton cultivars using Nano-fertilizers (0.00, 0.25 ,0.50 and 0.75 g/l nano p/k) under two salinity levels (4557 and 8934
ppm) to improve seed cotton yield/plant during two growing seasons (2018 and 2019). Tolerance indices under low salinity
level (4557 ppm) compared to high salinity level (8934 ppm) were used to evaluate the tested cultivars. Results indicated
that, Giza 95 has the highest values of salt tolerance and relative performance indices (1.079 and 1.060, respectively) as
tolerant cultivar while, Giza 94 recorded the lowest values (0.561 and 0.962, respectively) as sensitive cultivar. The results
indicated that Nano-scale fertilizer is considered as a vital topic to be aware by its influence on cotton yield under stress
conditions. Different molecular weights of protein bands were detected under the two salinity levels. Such specific bands
could be used to distinguish tolerant or sensitive cotton cultivars to salinity using Nano- fertilizers depending on tolerance
indices.