Responses to shading in Chenopodium album: The effect of the maternal environment and the N source supplied

To study the effect of the maternal environment and N sources in responses to shading in Chenopodium album L., seeds from plants grown at an ambient red/far red (R/FR) ratio (1.07) or a low R/FR ratio (0.39) were germinated in a greenhouse at ambient light. At 34 d after sowing (d.a.s.), they were e...

Descripción completa

Detalles Bibliográficos
Autor principal: Causin, H.F.
Formato: JOUR
Materias:
Ammonium
Chenopodium album
Light spectral quality
Maternal effects
Nitrate
Shade-avoidance responses
Biomass
Greenhouses
Harvesting
Plants (botany)
Tissue
Ambient light
Chenopodium album L.
Red/far red (R/FR)
Seed
light quality
maternal effect
nitrate
shading
Plants
Seeds
Chenopodium
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00084026_v82_n9_p1371_Causin
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00084026_v82_n9_p1371_Causin
record_format dspace
spelling todo:paper_00084026_v82_n9_p1371_Causin2023-10-03T14:05:55Z Responses to shading in Chenopodium album: The effect of the maternal environment and the N source supplied Causin, H.F. Ammonium Chenopodium album Light spectral quality Maternal effects Nitrate Shade-avoidance responses Biomass Greenhouses Harvesting Plants (botany) Tissue Ambient light Chenopodium album L. Red/far red (R/FR) Seed light quality maternal effect nitrate shading Greenhouses Harvesting Plants Seeds Tissue Chenopodium Chenopodium album To study the effect of the maternal environment and N sources in responses to shading in Chenopodium album L., seeds from plants grown at an ambient red/far red (R/FR) ratio (1.07) or a low R/FR ratio (0.39) were germinated in a greenhouse at ambient light. At 34 d after sowing (d.a.s.), they were exposed to either ambient R/FR (0.98) or low R/FR (0.21) progeny light treatments and fertilized with 2.7 mmol/L nitrogen supplied at 1:3 or 3:1 NO3-: NH4+ ratios. Two harvests were performed at 67 and 113 d.a.s. At each harvest, stem elongation traits and biomass of plant organs were recorded. In the first harvest, tissue N% and free NO3--N concentrations were analyzed. In the first harvest, plants from the low R/FR maternal treatment were heavier and taller than the maternal controls when grown at an ambient R/FR and with a high NO3- supply. At the second harvest this difference persisted in most of the conditions tested. Stem elongation and relative biomass allocation to the stem increased in the low R/FR treated plants, although the effect varied during ontogeny and with the maternal and nutrient treatment considered. The studied factors also affected N acquisition and metabolism. It is concluded that responses to the light spectral quality as well as plant N economy are influenced by the R/FR ratio of the maternal environment and that their expression may be altered by the relative availability of NO 3--N and NH4+-N. Fil:Causin, H.F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00084026_v82_n9_p1371_Causin
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Ammonium
Chenopodium album
Light spectral quality
Maternal effects
Nitrate
Shade-avoidance responses
Biomass
Greenhouses
Harvesting
Plants (botany)
Tissue
Ambient light
Chenopodium album L.
Red/far red (R/FR)
Seed
light quality
maternal effect
nitrate
shading
Greenhouses
Harvesting
Plants
Seeds
Tissue
Chenopodium
Chenopodium album
spellingShingle Ammonium
Chenopodium album
Light spectral quality
Maternal effects
Nitrate
Shade-avoidance responses
Biomass
Greenhouses
Harvesting
Plants (botany)
Tissue
Ambient light
Chenopodium album L.
Red/far red (R/FR)
Seed
light quality
maternal effect
nitrate
shading
Greenhouses
Harvesting
Plants
Seeds
Tissue
Chenopodium
Chenopodium album
Causin, H.F.
Responses to shading in Chenopodium album: The effect of the maternal environment and the N source supplied
topic_facet Ammonium
Chenopodium album
Light spectral quality
Maternal effects
Nitrate
Shade-avoidance responses
Biomass
Greenhouses
Harvesting
Plants (botany)
Tissue
Ambient light
Chenopodium album L.
Red/far red (R/FR)
Seed
light quality
maternal effect
nitrate
shading
Greenhouses
Harvesting
Plants
Seeds
Tissue
Chenopodium
Chenopodium album
description To study the effect of the maternal environment and N sources in responses to shading in Chenopodium album L., seeds from plants grown at an ambient red/far red (R/FR) ratio (1.07) or a low R/FR ratio (0.39) were germinated in a greenhouse at ambient light. At 34 d after sowing (d.a.s.), they were exposed to either ambient R/FR (0.98) or low R/FR (0.21) progeny light treatments and fertilized with 2.7 mmol/L nitrogen supplied at 1:3 or 3:1 NO3-: NH4+ ratios. Two harvests were performed at 67 and 113 d.a.s. At each harvest, stem elongation traits and biomass of plant organs were recorded. In the first harvest, tissue N% and free NO3--N concentrations were analyzed. In the first harvest, plants from the low R/FR maternal treatment were heavier and taller than the maternal controls when grown at an ambient R/FR and with a high NO3- supply. At the second harvest this difference persisted in most of the conditions tested. Stem elongation and relative biomass allocation to the stem increased in the low R/FR treated plants, although the effect varied during ontogeny and with the maternal and nutrient treatment considered. The studied factors also affected N acquisition and metabolism. It is concluded that responses to the light spectral quality as well as plant N economy are influenced by the R/FR ratio of the maternal environment and that their expression may be altered by the relative availability of NO 3--N and NH4+-N.
format JOUR
author Causin, H.F.
author_facet Causin, H.F.
author_sort Causin, H.F.
title Responses to shading in Chenopodium album: The effect of the maternal environment and the N source supplied
title_short Responses to shading in Chenopodium album: The effect of the maternal environment and the N source supplied
title_full Responses to shading in Chenopodium album: The effect of the maternal environment and the N source supplied
title_fullStr Responses to shading in Chenopodium album: The effect of the maternal environment and the N source supplied
title_full_unstemmed Responses to shading in Chenopodium album: The effect of the maternal environment and the N source supplied
title_sort responses to shading in chenopodium album: the effect of the maternal environment and the n source supplied
url http://hdl.handle.net/20.500.12110/paper_00084026_v82_n9_p1371_Causin
work_keys_str_mv AT causinhf responsestoshadinginchenopodiumalbumtheeffectofthematernalenvironmentandthensourcesupplied
_version_ 1807316470229630976

Ejemplares similares