Nitrogen supply affects seed yield and quality in tomato plants

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dc.contributor.advisorContreras E., Samuel
dc.contributor.authorSánchez Molina, Javier
dc.contributor.otherPontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal
dc.date.accessioned2022-09-26T14:59:40Z
dc.date.available2022-09-26T14:59:40Z
dc.date.issued2022
dc.date.updated2022-09-25T23:18:24Z
dc.descriptionTesis (Magíster en Fisiología y Producción Vegetal)--Pontificia Universidad Católica de Chile, 2022
dc.description.abstractNitrogen fertilization is one of the main practices in agriculture and its effects on yield and quality of most commodity products are widely known. However, the nitrogen response in seed production is still not well understood, even in important species such as tomato. The objective of this study was to determine the effect of nitrogen fertilization on tomato seed yield and quality. Tomato, cv. Moneymaker, plants were grown in pots with a soilless media and fertigated with one of three nutrient solutions differing in its N concentration: 5, 15, and 25 mM. Yield and quality were measured for both fruit and seed. Fruit weight decreased and soluble solids increased significantly with increasing N fertilization. Seed weight also decreased with increasing N fertilization. Most common seed quality attributes such as standard germination and germination index did not vary significantly among treatments. Physiological dormancy was observed in all treatments and was evidenced by faster germination in evaluations made at 8 months than at 5 months after harvest. The 25 mM treatment exhibited reduced dormancy; however, this effect was much less than the after-ripening time. Also, the same treatment showed greater longevity. Although the results indicated that higher nitrogen fertilization had an impact on seed quality attributes such as dormancy and longevity, the effect was only observed in most restrictive tests and did not have an influence on most common seed quality attributes. Therefore, nitrogen fertilization in tomato seed production could aim at higher yields without a significant decrease in seed quality.
dc.format.extent25 páginas
dc.fuente.origenAutoarchivo
dc.identifier.doi10.7764/tesisUC/AGR/64877
dc.identifier.urihttps://doi.org/10.7764/tesisUC/AGR/64877
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/64877
dc.information.autorucFacultad de agronomía e ingeniería forestal ; Contreras E., Samuel ; 0000-0002-3075-5354 ; 8151
dc.information.autorucFacultad de agronomía e ingeniería forestal ; Sánchez Molina, Javier ; S/I ; 1027757
dc.language.isoen
dc.nota.accesoContenido completo
dc.rightsacceso abierto
dc.subjectTomatoes_ES
dc.subjectNitrogen fertilizationes_ES
dc.subjectSeed qualityes_ES
dc.subjectVigores_ES
dc.subjectDormancyes_ES
dc.subjectLongevityes_ES
dc.subject.ddc570
dc.subject.deweyBiologíaes_ES
dc.subject.ods09 Industry, innovation and infrastructure
dc.subject.ods02 Zero hunger
dc.subject.ods15 Life on land
dc.subject.odspa09 Industria, innovación e infraestructura
dc.subject.odspa02 Hambre cero
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.titleNitrogen supply affects seed yield and quality in tomato plantses_ES
dc.typetesis de maestría
sipa.codpersvinculados8151
sipa.codpersvinculados1027757
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