Water preconditioning on germination and emergence of Capsicum chinense Jacq.

Abstract

The objective of this work was to determine the effect of water pre-conditioning on the percentage of germination and emergence of Capsicum chinense. The seeds were cultivated during the productive cycle from December 2015 to February 2016. For the pre-conditioning, the seeds were imbibed with 2.5, 3.5, 5, 7.5 and 10 ml of water. The volume of 7.5 ml was used as a reference. Germination results indicate that the three best imbibition volumes were 2.5, 3.5 and 5 mL, with a Pearson correlation of -0.905 (p= 0.000) between the volume of water and the percentage of accumulated germination, as well as the decrease of the germination time 50. Subsequently, the same seeds were transplanted to evaluate the emergence. The best imbibition volumes for the emergency were, in that order, 3.5, 5 and 2.5 ml. In the emergency, the volume with the best percentage of germination (2.5 ml) occupied the third place, which modified the Pearson coefficient to -0.641 (p= 0.01). The results suggest that a certain degree of stress, generated by the decrease in water supply, favors germination and establishment, which could be related to the synthesis and accumulation of ethylene within the germination system. On the other hand, the increase in the diameter of the water film generates a decrease in the availability of oxygen. The contribution of the present work was to demonstrate that the correct hydration of the seeds influences later stages of germination, without adding growth regulators.

ZnO Nanoparticles Obtained by Green Synthesis as an Alternative to Improve the Germination Characteristics of L. esculentum

“…Therefore, the true success that guarantees the growth and development of a seedling is determined by the emergence [ 8 ]. After the hard and impenetrable seed coat is broken, high enzymatic and metabolic activity is required for cell elongation [ 45 ]. When statistically analyzing the emergence ( p = 0.021 < 0.05), the existence of significant differences was identified, with treatment T6 having the highest average and demonstrating the existence of the effect of the ZnO NPs on the percentage of emergence of L. esculentum .…”

Scarification of Seeds of Capsicum chinense Jacq. With Phytohormones and Physicochemical Treatments to Improve Seedling Quality

“…3). That even though the quality standards for seedlings are usually defined by each producer according to their preferences, a quality seedling, ready for transplantation, is widely considered to be a seedling with 3-4 pairs of true leaves, which is usually achieved between 40 and 50 days after sowing 37 .…”