Evaluating the drought tolerance of three Brachiaria grass cultivar.
| dc.contributor.advisor | Carballo Guerrero, Daniel | |
| dc.contributor.advisor | Gilman, Alex | |
| dc.contributor.author | Awali, Khaalid Ahmed | |
| dc.contributor.author | Farah, Saeed Mohamud | |
| dc.date.accessioned | 2022-11-06T03:05:02Z | |
| dc.date.available | 2022-11-06T03:05:02Z | |
| dc.date.issued | 2018-12 | |
| dc.description.abstract | The increasing effects of climate change threaten the livelihoods and wellbeing of many people by generating unfavorable environmental conditions, which lead to negative results in the development, growth and the production of many plant species. The objective of this experiment was to identify drought tolerant cultivars among the three studied Brachiaria species (B. brizantha CIAT 26110, B. ruziziensis x B. brizantha CIAT 36061 and B. ruziziensis x decumbens cv) using controlled water irrigation. The evaluation consisted of three treatments based on water availability levels, where treatment W50 had adequate amount of water, treatment W30 had moderate amount of water and treatment W10 had a low amount of water. The collected data was water potential (WP) in bars, above ground biomass (AGB) in grams, below ground biomass (BGB) in grams and total biomass (TB) in grams. Statistical analysis was conducted for each cultivar across treatments using analysis of variance in Software R. In the water deficit treatment of below ground biomass, species B. brizantha CIAT 26110 and B. ruziziensis x B. brizantha CIAT 36061 had similar growth while B. ruziziensis x decumbens cv had experienced water stress and gained less below ground biomass. In above ground biomass, all the three species had statistically similar growth. However, species B. brizantha CIAT 26110 and B. ruziziensis x B. brizantha CIAT 36061 demonstrated morphological and physiological drought tolerance potential and are recommended for use as animal feed during dry seasons to reduce shortfalls in animal forage availability and ensure rural farmer livelihoods in Africa. | es_ES |
| dc.description.abstract | Los efectos crecientes del cambio climático amenazan la vida de muchas especies y ponen a muchas otras en condiciones ambientales desfavorables, generando resultados negativos en el desarrollo, el crecimiento y la producción de diversas especies de plantas. Este experimento se llevó a cabo para evaluar la tolerancia a la sequía de tres cultivares de pastos Brachiaria y para esto se desarrolló en un ambiente controlado. El objetivo de este experimento fue identificar cultivares tolerantes a la sequía entre las tres especies de B.rachiaria estudiadas (B. brizantha CIAT 26110, B. ruziziensis x B. brizantha CIAT 36061 y B. ruziziensis x decumbens cv). La evaluación consiste en tres tratamientos basados en niveles de disponibilidad de agua. Se recopiló datos sobre el potencial hídrico (WP), biomasa aérea (AGB), biomasa subterránea (BGB) y biomasa total (TB). El análisis estadístico se realizó mediante el análisis de varianza utilizando el Software R. En el tratamiento del déficit hídrico de la biomasa subterránea, las especies B. brizantha CIAT 26110 y B. ruziziensis x B. brizantha CIAT 36061 obtuvieron un crecimiento similar mientras que B. ruziziensis x decumbens cv experimentó estrés hídrico y ganó menos biomasa subterránea. En la biomasa aérea, las tres especies tuvieron ganancias estadísticamente similares. Sin embargo, según el estudio, dos especies, B. brizantha CIAT 26110 y B. ruziziensis x B. brizantha CIAT 36061, demostraron un potencial morfológico y fisiológico de tolerancia a la sequía y son recomendables para sembrar como pastos para animales durante las estaciones secas. | es_ES |
| dc.description.uri | Trabajo de investigación | es_ES |
| dc.format | application/pdf | es_ES |
| dc.identifier.uri | https://repositorio.earth.ac.cr/handle/UEARTH/372 | |
| dc.language.iso | eng | es_ES |
| dc.publisher | Universidad EARTH | es_ES |
| dc.rights | info:eu-repo/semantics/restrictedAccess | es_ES |
| dc.source | Universidad EARTH | es_ES |
| dc.source.uri | Repositorio Digital UEARTH | es_ES |
| dc.subject | BRACHIARIA | es_ES |
| dc.subject | RESISTENCIA A LA SEQUIA | es_ES |
| dc.subject | POTENCIAL HIDRICO DEL SUELO | es_ES |
| dc.subject | BIOMASA | es_ES |
| dc.subject.ocde | https://purl.org/pe-repo/ocde/ford#4.01.01 | es_ES |
| dc.title | Evaluating the drought tolerance of three Brachiaria grass cultivar. | es_ES |
| dc.type | info:eu-repo/semantics/bachelorThesis | es_ES |
| thesis.degree.discipline | Agronomía | es_ES |
| thesis.degree.grantor | Universidad EARTH | es_ES |
| thesis.degree.level | Licenciatura | es_ES |