Combining Ability in Mixtures of Prairie Grass and Clovers

Our objective was to evaluate the combining ability among cultivars of forage species, commonly sown in temperate regions of Argentina using a short rotation system. Three genetically diverse cultivars of prairie brome grass (Bromus catharticus, cv Copetona, cv Ñandú and cv Tango), a white clover cu...

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Autores principales: Arturi, Miguel Jacinto, Aulicino, Mónica Beatriz, Ansín, Oscar Emir, Gallinger, Gustavo, Signorio, Rodolfo Domingo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2012
Materias:
Ciencias Agrarias
Bromus catharticus
Trifolium repens
T. pratense
Grass/Legume Mixtures
Dry Matter Yield
Argentina
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/81092
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-81092
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
Bromus catharticus
Trifolium repens
T. pratense
Grass/Legume Mixtures
Dry Matter Yield
Argentina
spellingShingle Ciencias Agrarias
Bromus catharticus
Trifolium repens
T. pratense
Grass/Legume Mixtures
Dry Matter Yield
Argentina
Arturi, Miguel Jacinto
Aulicino, Mónica Beatriz
Ansín, Oscar Emir
Gallinger, Gustavo
Signorio, Rodolfo Domingo
Combining Ability in Mixtures of Prairie Grass and Clovers
topic_facet Ciencias Agrarias
Bromus catharticus
Trifolium repens
T. pratense
Grass/Legume Mixtures
Dry Matter Yield
Argentina
description Our objective was to evaluate the combining ability among cultivars of forage species, commonly sown in temperate regions of Argentina using a short rotation system. Three genetically diverse cultivars of prairie brome grass (Bromus catharticus, cv Copetona, cv Ñandú and cv Tango), a white clover cultivar (Trifolium repens, cv Lucero) and a red clo-ver cultivar (T. pratense, cv Tropero) were evaluated. A randomized complete block design experiment was established in 2005. The treatments included five monocultures and ten binary mixtures. The experiment was harvested 6 times over an 18-month period. Cumulative dry matter yield (kg·ha–1) was calculated as the sum of the six individual harvests. Diallel analysis provided estimates of the general combining ability (GCA) and specific combining ability (SCA). Red clover in monoculture and mixtures produced the highest yields, with significant positive GCA effects (P < 0.01). Lucero white clover, and Copetona and Tango prairie grasses had significant negative GCA effects (P < 0.05). In mix-tures, red clover with each of the three grass cultivars and white clover with Tango had significant and outstanding SCA effects (P < 0.01). Grass/grass mixtures and the legume/legume mixture showed non-significant SCA effects, while the grass/legume mixtures generally had higher yield than either component sown as a monoculture (P < 0.01). Given the short-term nature of this study, we must limit our inference to short-term pastures (<2 years). Under these conditions, red clover had the best combination with prairie brome grass.
format Articulo
Articulo
author Arturi, Miguel Jacinto
Aulicino, Mónica Beatriz
Ansín, Oscar Emir
Gallinger, Gustavo
Signorio, Rodolfo Domingo
author_facet Arturi, Miguel Jacinto
Aulicino, Mónica Beatriz
Ansín, Oscar Emir
Gallinger, Gustavo
Signorio, Rodolfo Domingo
author_sort Arturi, Miguel Jacinto
title Combining Ability in Mixtures of Prairie Grass and Clovers
title_short Combining Ability in Mixtures of Prairie Grass and Clovers
title_full Combining Ability in Mixtures of Prairie Grass and Clovers
title_fullStr Combining Ability in Mixtures of Prairie Grass and Clovers
title_full_unstemmed Combining Ability in Mixtures of Prairie Grass and Clovers
title_sort combining ability in mixtures of prairie grass and clovers
publishDate 2012
url http://sedici.unlp.edu.ar/handle/10915/81092
work_keys_str_mv AT arturimigueljacinto combiningabilityinmixturesofprairiegrassandclovers
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AT ansinoscaremir combiningabilityinmixturesofprairiegrassandclovers
AT gallingergustavo combiningabilityinmixturesofprairiegrassandclovers
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bdutipo_str Repositorios
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