Response to Chilling of Zea mays, Tripsacum dactyloides and their Hybrid

Maize (Zea mays ssp. mays) and eastern gamagrass (Tripsacum dactyloides) are known for their susceptibility to chilling injuries. Their hybrid (Z. mays × T. dactyloides) showed higher tolerance to low temperatures (−2 °C) in the field than its parents. Exposure to 5 °C for 2 or 3 d reduced the varia...

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Autores principales: Jatimliansky, Jaime Raúl, García, M.D., Molina, M.C.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2004
Materias:
Ciencias Agrarias
Maize
Eastern Gamagrass
Chilling Tolerance
Chlorophyll Fluorescence
Intergeneric Hybrid
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/143009
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-143009
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Agrarias
Maize
Eastern Gamagrass
Chilling Tolerance
Chlorophyll Fluorescence
Intergeneric Hybrid
spellingShingle Ciencias Agrarias
Maize
Eastern Gamagrass
Chilling Tolerance
Chlorophyll Fluorescence
Intergeneric Hybrid
Jatimliansky, Jaime Raúl
García, M.D.
Molina, M.C.
Response to Chilling of Zea mays, Tripsacum dactyloides and their Hybrid
topic_facet Ciencias Agrarias
Maize
Eastern Gamagrass
Chilling Tolerance
Chlorophyll Fluorescence
Intergeneric Hybrid
description Maize (Zea mays ssp. mays) and eastern gamagrass (Tripsacum dactyloides) are known for their susceptibility to chilling injuries. Their hybrid (Z. mays × T. dactyloides) showed higher tolerance to low temperatures (−2 °C) in the field than its parents. Exposure to 5 °C for 2 or 3 d reduced the variable to maximal chlorophyll fluorescence ratio (FV/FM), an indicator of the maximum photochemical efficiency of the photosystem 2, and the variable to minimal fluorescence ratio (FV/F0) more in maize and eastern gamagrass than in hybrid plants. Chlorophyll contents for rewarming plants (25 °C for 3 d) were lower than before chilling in both parents while values for hybrid plants were similar. Electrolyte leakage was higher in chilled than control plants but it did not show significant differences among genotypes. Our data suggest that hybrid plants have higher capacity to recover from chilling injury in controlled conditions than their parents.
format Articulo
Articulo
author Jatimliansky, Jaime Raúl
García, M.D.
Molina, M.C.
author_facet Jatimliansky, Jaime Raúl
García, M.D.
Molina, M.C.
author_sort Jatimliansky, Jaime Raúl
title Response to Chilling of Zea mays, Tripsacum dactyloides and their Hybrid
title_short Response to Chilling of Zea mays, Tripsacum dactyloides and their Hybrid
title_full Response to Chilling of Zea mays, Tripsacum dactyloides and their Hybrid
title_fullStr Response to Chilling of Zea mays, Tripsacum dactyloides and their Hybrid
title_full_unstemmed Response to Chilling of Zea mays, Tripsacum dactyloides and their Hybrid
title_sort response to chilling of zea mays, tripsacum dactyloides and their hybrid
publishDate 2004
url http://sedici.unlp.edu.ar/handle/10915/143009
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AT garciamd responsetochillingofzeamaystripsacumdactyloidesandtheirhybrid
AT molinamc responsetochillingofzeamaystripsacumdactyloidesandtheirhybrid
bdutipo_str Repositorios
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