Effects of nutritive conditioning with n-forms on growth, proline and NRAsa activity in muskmelon seedlings

Abstract Galia melon seeds were primed with 8 g L-1 of N as NH4NO3, KNO3 or NH4NO3+KNO3 or non-primed (Control). During germina-tion, three solutions of differing water quality were used; one from "Almería" (SARadj 2.0), and two to reproduce the water quality in "Pintados" in Ata...

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Autores principales:	Olave,Jorge, Guzman,Miguel, Sánchez,Agustín, Sánchez,Matías, Santander,Christian
Lenguaje:	English
Publicado:	Universidad de Tarapacá. Facultad de Ciencias Agronómicas 2020
Materias:	nutritive conditioning seedlings stress enzymatic activity
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-34292020000300015
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spelling	oai:scielo:S0718-342920200003000152021-01-31Effects of nutritive conditioning with n-forms on growth, proline and NRAsa activity in muskmelon seedlingsOlave,JorgeGuzman,MiguelSánchez,AgustínSánchez,MatíasSantander,Christian nutritive conditioning seedlings stress enzymatic activity Abstract Galia melon seeds were primed with 8 g L-1 of N as NH4NO3, KNO3 or NH4NO3+KNO3 or non-primed (Control). During germina-tion, three solutions of differing water quality were used; one from "Almería" (SARadj 2.0), and two to reproduce the water quality in "Pintados" in Atacama, northern Chile (SARadj 10.4 and 14.3). Nutritive conditioning of seedling in the nursery was evaluated for increasingly saline waters. A base fertigation solution of 7.5 meq L-1 NO3-, 0.63 meq L-1 H2PO4-, 1.26 meq L-1 SO4 =, 3.5 meq L-1 K+, 4.14 meq L-1 Ca2+, 1.26 meq L-1 Mg2+ and 0.5 meq L-1 NH4 + was prepared with each water and alternated daily with a 7 mM solution of NH4NO3, KNO3 or NH4NO3+KNO3 fertilizers. Seedlings were grown in perlite plugs in a passive greenhouse. Physical and chemical parameters, proline content and nitrate reductase activity were evaluated transplants and whose seed had been primed with the same N-forms. Seedlings fertigated with NH4NO3 presented the highest plant size, number of leaves, leaf area, fresh and dry biomass, and the lowest water content both in leaf and whole transplant. Proline synthesis and nitrate reductase activity were not directly affected by water quality or by N-form conditioning. Proline synthesis decreased with seedling age, and the lowest values were obtained 34 days after sowing. Nevertheless, Nitrate Reductase activity was similar in all nursery stages.info:eu-repo/semantics/openAccessUniversidad de Tarapacá. Facultad de Ciencias AgronómicasIdesia (Arica) v.38 n.3 20202020-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-34292020000300015en10.4067/S0718-34292020000300015
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	nutritive conditioning seedlings stress enzymatic activity
spellingShingle	nutritive conditioning seedlings stress enzymatic activity Olave,Jorge Guzman,Miguel Sánchez,Agustín Sánchez,Matías Santander,Christian Effects of nutritive conditioning with n-forms on growth, proline and NRAsa activity in muskmelon seedlings
description	Abstract Galia melon seeds were primed with 8 g L-1 of N as NH4NO3, KNO3 or NH4NO3+KNO3 or non-primed (Control). During germina-tion, three solutions of differing water quality were used; one from "Almería" (SARadj 2.0), and two to reproduce the water quality in "Pintados" in Atacama, northern Chile (SARadj 10.4 and 14.3). Nutritive conditioning of seedling in the nursery was evaluated for increasingly saline waters. A base fertigation solution of 7.5 meq L-1 NO3-, 0.63 meq L-1 H2PO4-, 1.26 meq L-1 SO4 =, 3.5 meq L-1 K+, 4.14 meq L-1 Ca2+, 1.26 meq L-1 Mg2+ and 0.5 meq L-1 NH4 + was prepared with each water and alternated daily with a 7 mM solution of NH4NO3, KNO3 or NH4NO3+KNO3 fertilizers. Seedlings were grown in perlite plugs in a passive greenhouse. Physical and chemical parameters, proline content and nitrate reductase activity were evaluated transplants and whose seed had been primed with the same N-forms. Seedlings fertigated with NH4NO3 presented the highest plant size, number of leaves, leaf area, fresh and dry biomass, and the lowest water content both in leaf and whole transplant. Proline synthesis and nitrate reductase activity were not directly affected by water quality or by N-form conditioning. Proline synthesis decreased with seedling age, and the lowest values were obtained 34 days after sowing. Nevertheless, Nitrate Reductase activity was similar in all nursery stages.
author	Olave,Jorge Guzman,Miguel Sánchez,Agustín Sánchez,Matías Santander,Christian
author_facet	Olave,Jorge Guzman,Miguel Sánchez,Agustín Sánchez,Matías Santander,Christian
author_sort	Olave,Jorge
title	Effects of nutritive conditioning with n-forms on growth, proline and NRAsa activity in muskmelon seedlings
title_short	Effects of nutritive conditioning with n-forms on growth, proline and NRAsa activity in muskmelon seedlings
title_full	Effects of nutritive conditioning with n-forms on growth, proline and NRAsa activity in muskmelon seedlings
title_fullStr	Effects of nutritive conditioning with n-forms on growth, proline and NRAsa activity in muskmelon seedlings
title_full_unstemmed	Effects of nutritive conditioning with n-forms on growth, proline and NRAsa activity in muskmelon seedlings
title_sort	effects of nutritive conditioning with n-forms on growth, proline and nrasa activity in muskmelon seedlings
publisher	Universidad de Tarapacá. Facultad de Ciencias Agronómicas
publishDate	2020
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-34292020000300015
work_keys_str_mv	AT olavejorge effectsofnutritiveconditioningwithnformsongrowthprolineandnrasaactivityinmuskmelonseedlings AT guzmanmiguel effectsofnutritiveconditioningwithnformsongrowthprolineandnrasaactivityinmuskmelonseedlings AT sanchezagustin effectsofnutritiveconditioningwithnformsongrowthprolineandnrasaactivityinmuskmelonseedlings AT sanchezmatias effectsofnutritiveconditioningwithnformsongrowthprolineandnrasaactivityinmuskmelonseedlings AT santanderchristian effectsofnutritiveconditioningwithnformsongrowthprolineandnrasaactivityinmuskmelonseedlings
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Effects of nutritive conditioning with n-forms on growth, proline and NRAsa activity in muskmelon seedlings

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