Response of Three Flax Genotypes (Linum usitatissimum L.) to Foliar Spraying with Different Concentration of Zinc and Boron under the Dryland Conditions of Nineveh Governorate

Abstract

A field experiment was conducted during the winter season for the years 2018-2019 and 2019-2020 successively to study the effect of foliar application of zinc and boron on growth traits, yield components and quality of three flax genotypes (Lithuania, Ariana and Linot).The experiment included three concentrations of zinc (0,5 and 10 mg zinc/L) and three concentrations of boron (0, 6 and 12 mg boron/L) implemented according to the factorial experiment in a Completely Random Block Design. The main findings could be summarized as follows:-The results indicate that the Lenot genotype gave the highest values for the traits of plant height, stem diameter, number of fruiting branches, number of capsules/plant, number of seeds/capsule, weight of thousand seeds, total seed yield (tons/ha) and oil yield (tons/ha). for seasons 2018-2019 and 2019-2020 respectively.Foliar application with zinc on plant leaves at a concentration of 5 mg zinc/liter led to a significant increase in plant height, number of fruiting branches, number of capsules/plant, number of seeds/capsule, weight of thousand seeds, total seed yield (tons/ha), oil yield (tons/ha) in both growing seasons.Adding boron application on plant leaves at a concentration of 6 mg boron/liter led to a significant increase in plant height, stem diameter, number of fruiting branches, number of capsules/plant, number of seeds/capsule, weight of thousand seeds, total seed yield (tons/ha) and oil yield (tons/ha) for seasons 2018-2019 and 2019-2020, respectively. In general, it can be concluded that the highest total yield of seeds per unit area can be achieved by planting Lenot genotype and adding zinc on plant leaves at a concentration of 5 mg/L and boron at a concentration of 6 mg/L with in Dryland Conditions of this study.

Protective Role of Mycosynthesized Bimetallic ZnO-CuO Nanoparticles as Therapeutic Nutrients to Enhance the Resistance of Vicia faba against Fusarium Wilt Disease

“…Increased chlorophyll contents in infected plants treated with ZnO NPs, CuO NPs and ZnO-CuO NPs could have resulted from supplying the plant with zinc and copper, where ZnO NPs play an important role in cell division [39,40], and CuO NPs in the formation of chlorophyll [41], as scientific reports have proven that up to 70% of the copper found in plants is found in chlorophyll, which is largely associated with chloroplasts [42,43]. It is involved in lignin formation, and protein and carbohydrate synthesis, and may be necessary for symbiotic nitrogen fixation [44]. Copper is part of the plastocyanin, which forms a link in the electron transport chain and is involved in photosynthesis [45].…”