Effects of Elicitation on Invitro Regeneration of two Tomato (Solanum lycopersicum L.) Cultivars in Tissue Culture

Exploring alternative avenues, in vitro culture emerges as a promising option for potential bioactive compound sources. However, compared to intact plants, only a few cultures demonstrate efficient synthesis of secondary metabolites. Elicitors have gained prominence as stress agents for enhancing in vitro micropropagation in specific tissues, organs, and cells. Recent advancements in plant tissue culture involve elicitors, opening new possibilities for in vitro production of crucial food crops. This research aimed to investigate the impact of three elicitors (Activane®, Micobiol®, and Stemicol®) on germination and in vitro multiplication of two tomato cultivars explants, employing both direct and indirect in vitro organogenesis. Among the texted elicitors, Micobiol® emerged as a successful elicitor, promoting optimal seed germination, survival, and 100% growth compared to the 80% in the control group. Further, Activane® exhibited a favourable induction response and achieved 96%, 95%, and 100% in weight and diameter of callus, yet various elicitor concentrations did not exert significant influence across treatments. In conclusion, an effective disinfection and in vitro implantation of tomato seeds ensured successful germination, promoting seedling survival and growth. Various elicitors positively impacted in vitro organogenesis, particularly in root induction, with higher survival percentages in acclimatized plants. The study guides future research on elicitor treatments for large-scale tomato in vitro propagation, emphasizing the need to identify optimal elicitor concentrations

The Impact of Elicitation on Potato (Solanum tuberosum L.) Production, Enzymatic and Antioxidant Activity in Nuevo León, Mexico

Many compounds available in the market act as elicitors and can be incorporated into agronomic management. But the focus is on elicitors frequently used for the induction of different responses related to the systemic resistance of plants to increase the production of bioactive metabolites, biomass accumulation, and yield. For that case, this work aimed to evaluate the effects of three elicitors on potato crops under field conditions. The potato cultivar "Fianna" was used, and a completely randomized design with four treatments and four repetitions. The effect of three elicitors at a dose of 2.5 g. L-1 for Activane®, 2.5 ml. L-1 for Micobiol® and 2.5 g. L-1 for Stemicol® was evaluated on growth, yield, enzymatic and antioxidant activity. Generally, the elicitors had a positive effect on the enzymes and antioxidant capacity of the potato plant. It was concluded that the application of elicitors Stemicol® (T4) had the most significant result on the number of tubers and weight per plant at harvest while allowing a more substantial number of tubers to be obtained. In comparison, Activane® (T2) influenced the growth variables of stem length and number of leaves per plant

Crecimiento y producción de biomasa de moringa (Moringa oleifera Lam.) bajo las condiciones climáticas del Noreste de México

El cultivo de Moringa oleifera Lam. representa una alternativa viable para producción de biomasa por tener un rápido crecimiento vegetativo; sin embargo, tanto el crecimiento del cultivo como la producción de biomasa, pueden tener variaciones de acuerdo con las condiciones climatológicas y edáficas en que se desarrolle el cultivo. El objetivo de la presente investigación fue: evaluar el crecimiento y la producción de biomasa en dos niveles de fertilización (0 y 400 kg de N ha-1 año-1), dos variedades de M. oleifera (vaina corta 24 cm y vaina larga 45 cm, dos densidades de población (11 y 33 plantas m-2) y dos alturas de planta al corte (145.7 y 178.4 cm), durante los años 2013 y 2014 bajo condiciones de riego por goteo. El experimento se realizó a cielo abierto en el estado de Nuevo León, México (25o 47’ 07.54’’ latitud Norte, 100o 17’ 03.93’’ longitud Oeste, altitud de 479 msnm), utilizando un diseño experimental de bloques al azar con cuatro repeticiones, con un arreglo factorial Taguchi de 24. La altura de planta registró relación positiva con la producción de biomasa. La densidad de población registró relación negativa al crecimiento, pero en la producción de biomasa registró relaciones positivas y negativas, dependiendo del periodo de crecimiento. Las variedades y la fertilización no registraron diferencias significativas en el crecimiento ni en la producción de biomasa. Se concluye que la altura de planta al corte y la densidad de población, afectan el crecimiento y la producción de biomasa de M. oleifera