Phytohormones on the germination and initial growth of pumpkin seedlings under different types of water

Keylan S Guirra,Moadir De S Leite,Salvador B Torres,Bruno S Guirra,Francisco A Nogueira Neto,Anna L B Rêgo

doi:10.1590/1807-1929/agriambi.v24n12p827-833

Abstract

ABSTRACT Pumpkin (Curcubita moschata Duchesne) production in quantity and quality is often restricted due to adverse environmental conditions. Thus, the objective was to evaluate the action of phytohormones as stress attenuators on the germination and initial growth of pumpkin seedlings, cv. Sergipana, under different types of water. The design adopted was completely randomized, in a 3 × 4 factorial scheme, with four repetitions. In addition to the control, the seeds were treated with the gibberellic and salicylic acids and irrigated with the supply water, fish farming wastewater, artesian well water and solution of the mixture of fish farming wastewater + artesian well water, in a 1:1 ratio. The variables evaluated were germination, first germination count, germination speed index, length of shoots and roots, dry mass of shoots and roots, soluble sugars, amino acids and proline. Treatment of pumpkin seeds, cv. Sergipana, with gibberellic and salicylic acids improved germination kinetics and attenuated the effects of water salinity during the initial growth of pumpkin seedlings.

Highlights

Pumpkin (Curcubita moschata Duchesne) is native of the Americas and has worldwide socioeconomic importance, mainly due to its nutritional composition rich, in essential antioxidants and precursors of vitamin A (Resende et al, 2013).Much of the production of C. moschata occurs in the semi-arid region of northeastern Brazil in rainfed system (Devi et al, 2018)
Seeds treated with gibberellic and salicylic acids had higher germination percentages when irrigated with fish farming wastewater (W2), artesian well water (W3) and mixture of fish farming wastewater + artesian well water (W4)
For the result obtained with artesian well water + fish farming wastewater (W4), it was found that gibberellin promoted higher germination, being 47% higher than that of the control treatment

Summary

Introduction

Pumpkin (Curcubita moschata Duchesne) is native of the Americas and has worldwide socioeconomic importance, mainly due to its nutritional composition rich, in essential antioxidants and precursors of vitamin A (Resende et al, 2013). Much of the production of C. moschata occurs in the semi-arid region of northeastern Brazil in rainfed system (Devi et al, 2018) This region is affected by low water availability, which can cause metabolic disorders in plants (Ó et al, 2020). The high levels of salts present in these waters can lead to phytotoxicity problems, especially in the early stages of plant development (Silva et al, 2014b). These stages are highly hampered when saline water is used for irrigation (Oliveira et al, 2014). The objective was to evaluate the effect of phytohormones as attenuators of abiotic stresses during germination and initial growth of C. moschata seedlings under different types of water

Material and Methods

Results and Discussion

Literature Cited