Untitled

Abstract

The irrigation methods offer a good alternative for increasing water use efficiency. The main purpose of this study was to identify the best irrigation level for Habanero pepper (Capsicum chinense Jacq.) plants based on available water capacity (AWC) of substrate. An experiment carried out with three irrigation levels (20, 40 and 60% of AWC) and five genotypes (H225, H241, H244, H226 and Jaguar). The irrigation level of 20% decreased the soil water potential to cause water stress in plants. At an irrigation level of 40%, average jaguar plant height (92 cm) and H241 (79 cm), genotypes were greater than under the other treatments. Average leaf area of H225, H241 and H244 plants was at least 48% greater than Jaguar plants. Average total dry matter of H241 and Jaguar plants, were 30 and 28% greater than H226 plants; and values of maximum photochemical quantum yield (Fv/Fm), relative electron transport rate and effective photochemical quantum yield of photosystem II were higher in H241, H244 and H226 plants; i.e. they are less probably due to photo inhibition damage. However, flowering time was earlier in plants with an irrigation level (IL) of 20% than plants with an IL of 40%, this was a consequence of stress due to water deficit. The 60% irrigation treatment caused flooding and all genotypes died before the inflorescence stage. These results suggest the enforcement of a suitable irrigation level based in available water capacity of substrate coupled with a vigorous genotype can encourage healthy plants and high water use efficiency.

Morphophysiological changes in black pepper under different water supplies

“…Our findings regarding the response patterns to water restriction of MSL values (Figure 4) were similar to those for bell pepper (Aragão et al, 2011) and habanero pepper (Capsicum chinense Habanero) (Pérez-Gutiérrez et al, 2017), both under water restriction. Plants under V4 showed higher growth in MSL and consequently higher numbers of branches and leaves compared to the other treatments.…”

Response of morpho-physiological traits to drought stress and screening of curly pepper (Capsicum annuum) genotypes for drought tolerance

“…This study results are consistent with Budiyati et al (2017), who reported that drought stress significantly reduced the growth, biomass, and yields in several varieties of red curly. Furthermore, a significant decrease in plant height and stem diameter under drought stress compared to control treatment was also reported by Pérez-Gutiérrez et al (2017) in Capsicum chinense Jacq. and Phimchan et al (2012) in some cultivars of hot pepper.…”

Trophic interactions; Rhizobacteria; Plant growth; Preference

“…Sin embargo, los trabajos sobre capsaicinoides han sido de los más relevantes (Pino et al, 2006;Cisneros-Pineda et al, 2007) debido a que la pungencia de los frutos es la característica principal del cultivo, por tal motivo cualquier línea de investigación termina correlacionando sus variables con el grado de picor de los frutos, por ejemplo el nivel de humedad del suelo, la nutrición o condiciones de estrés abiótico (Borges-Gómez et al, 2008, Monforte-González et al, 2010, Ruiz-Lau et al, 2011b. Los estudios de los últimos años incluyen aspectos de producción agronómica (Bautista-Capetillo et al, 2018, David-Santoya et al, 2018, Gutiérrez-Gómez et al, 2018, Vázquez y Navarro, 2018, fisiológicos (Andueza-Noh et al, 2017, Pérez-Gutiérrez et al, 2017, Ayala-Garay et al, 2018, Meneses-Lazo et al, 2018, Pérez-Pastrana et al, 2018 y de uso médico (Rosa-Lugo et al, 2017, Sebastián-Fort et al, 2018. Pero, también incrementó la investigación en búsqueda de genotipos resistentes a enfermedades (Gasca- González et al, 2008, Caamal-Chan et al, 2011, uso de microorganismos benéficos de la rizósfera (Reyes-Ramírez et al, 2014, Mejía-Bautista et al, 2016, Samaniego-Gámez et al, 2016, Castillo-Aguilar et al, 2017a, 2017b, Chiquito-Contreras et al, 2017, rescate y conservación de materiales criollos (Latournerie-Moreno et al, 2002, Castañón-Nájera et al, 2010, López-Espinosa et al, 2018, respuestas fisiológicas de las plantas ante factores de estrés biótico y abiótico (Garruña- Hernández et al, 2014a, Pérez-Gutiérrez et al, 2017, fenología (Garruña-Hernández et al, 2012, Meneses-Lazo et al, 2018 ...…”