Effect of Gibberellic acid and Zinc sulphate on Vegetative, Flowering, Seed yield and Chemical consistent of jojoba plant (Simmondsia chinensis)

Abstract

This experiment was conducted to study jojoba response (Simmondsia chinensis) evergreen dioecious shrub to zinc sulphate plus gibberellic acid foliar application on vegetative, flowering, seed yield and seed chemical composition at private farm during two successive seasons of 2015 and 2016 in the Egypt. An experiment was laid out in randomized complete block design with three replications. In this study, jojoba plants were sprayed with all combination treatments of Zinc sulphate (0, 25, 50 and 75ppm) plus gibberellic acid (0, 50, 100 and 150ppm) thrice in the beginning of December, March and May. There results revealed that all combination treatments showed a significant improvement in all examined parameters with an increase in ZnSO4 / GA3 levels in comparison with untreated trees. Therefore, the maximum significant branch length (99.36 and 103.46 cm), secondary branches length (55.82 and 58.36 cm) obtained by application of 75ppm ZnSO4 plus 150ppm GA3 treatment, so this combination recorded the highest percentage of flowering %, final fruit set (95.01, 95.24%), total chlorophyll, mineral% content, seed yield per feedan (2200, 2145 kg) and seed lipid content(57.6%, 58.55%) at first and second terms respectively. The application of 75ppm ZnSO4 plus 150ppm GA3 treatment is recommended to improve jojoba traits which lead to raise its economic value as a promising tree which potentially useful as a biofuel with multi chemical and pharmaceuticals industries uses.

Metal-based-oxide nanoparticles assisted thein vitroculture growth ofPopulus albaas micronutrients: essential metabolic processes and genetic stability

“…Our findings agreed with previous reports by Atteya et al 67 and Gheith et al , 68 respectively. In their studies, a remarkable increase in the biomass yield and plant growth parameters was observed upon the treatment of jojoba and maize with Zn precursors.…”

“…In their studies, a remarkable increase in the biomass yield and plant growth parameters was observed upon the treatment of jojoba and maize with Zn precursors. 67,68 However, Prasad and co-workers proved that ZnO-NPs have a remarkable effect on enhancing peanut plant growth and that biomass yields are higher than ordinary Zn precursors such as ZnSO 4 at lower concentrations. This enhancement in peanut plant growth is attributed to the high adsorption of ZnO-NPs in the plant-based on their smaller size than ZnSO 4 .…”

Black Pepper in Malaysia: An Overview and Future Prospects

“…Moreover, sufficient application of Zn at 2.5 mg Zn kg -1 soil has increasing content of oleoresin (22.83%) and piperine(7.57%), however applying 0.1% Zn EDTA as foliar has a greater yield of black pepper for about 89 g bush -1 of dry pepper (Hamza and Sadanandan, 2005b). The remarkable effect on yield also reported in other crops such as onion (Goyal et al, 2017), jojoba (Atteya et al, 2018) and chickpea (Pooja and Sarawad, 2019).…”

Effect of Hormonal Seed Priming on Germination, Growth, Yield and Biomass Allocation in Soybean Grown under Induced Drought Stress

“…Amongst the approaches, as reviewed by Jewell et al (2010), genetic/physiological mechanisms targeted for manipulation of soybean growth to advance drought or chilling stress resistance could be recommended. Such techniques include the use of plant growth regulators such as; abscisic acid (ABA) and the most potent synthetic cytokinin compound; 6-benzylaminopurine or benzyladenine (BA) that regulates adaptive responses to environmental stresses in plants (Liu et al, 2000;McCourt and Creelman, 2008;Sardoei, 2014;Atteya et al, 2018). Plant hormones like ABA have been implicated in a variety of physiological processes triggered by stress, ranging from dormancy of seeds to chlorophyll biosynthesis (McCourt and Creelman, 2008).…”