Chlorophyll a fluorescence and development of zucchini plants under nitrogen and silicon fertilization

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dc.creatorJackson de Mesquita Alves
dc.creatorAlex Serafim de Lima
dc.creatorFrancisco Romário Andrade Figueiredo
dc.creatorToshik Iarley da Silva
dc.creatorLourival Ferreira Cavalcante
dc.creatorFrancisco de Oliveira Mesquita
dc.creatorEvandro Franklin de Mesquita
dc.creatorCesenildo de Figueiredo Suassuna
dc.date2020
dc.date.accessioned2026-07-07T02:43:58Z
dc.descriptionZucchini (Cucúrbita pepo L.) has a great economic and productive potential in the semi-arid region of Brazil, due to the wide acceptance by consumers and quick financial return. The nitrate (NO3 -) assimilation process in C3 plants such as zucchini is related to photorespiration, and Si accumulated near the stomata reduces the transpiration rate, making the photosynthesis cycle more efficient. The objective of this study was to evaluate the interaction between nitrogen and silicon fertilization on growth, chlorophyll index, and chlorophyll a fluorescence of zucchini plants. The treatments were distributed in a split-plot scheme in a randomized block design with three replicates. The plot was arranged by silicon levels (0 and 6 g/plant) and the subplots constituted by five nitrogen levels (30, 60, 90, 120 and 150 kg ha-1). Leaf, stem and total dry masses, chlorophyll a, chlorophyll b, total chlorophyll, chlorophyll a/b ratio and chlorophyll a fluorescence were evaluated. The highest dry matter productions in zucchini were obtained in treatments without Si. Si and N application together positively influences the chlorophyll a/b ratio of zucchini plants. The interaction between Si and N positively influences the maximum fluorescence, variable fluorescence and quantum yield of photosystem II of zucchini plants.
dc.formatapplication/pdf
dc.identifier0120-9965
dc.identifierhttps://www.redalyc.org/articulo.oa?id=180376060006
dc.identifierhttps://www.redalyc.org/journal/1803/180376060006/
dc.identifierhttps://www.redalyc.org/journal/1803/180376060006/html/
dc.identifierhttps://www.redalyc.org/journal/1803/180376060006/180376060006.epub
dc.identifierhttps://www.redalyc.org/journal/1803/180376060006/movil
dc.identifier10.15446/agron.colomb.v38n1.79172
dc.identifier.urihttp://hdl.handle.net/123456789/422156
dc.languageen
dc.publisherUniversidad Nacional de Colombia
dc.relationhttp://www.redalyc.org/revista.oa?id=1803
dc.rightsAgronomía Colombiana
dc.sourceAgronomía Colombiana (Colombia) Num.1 Vol.38
dc.subjectAgrociencias
dc.titleChlorophyll a fluorescence and development of zucchini plants under nitrogen and silicon fertilization
dc.typeartículo científico

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Agronomía Colombiana - Universidad Nacional de Colombia