Productive and morpho-physiological traits of ryegrass cultivars

Authors

  • Lucas Vargas Oliveira Universidade Federal de Pelotas (UFPel), Faculdade de Agronomia Eliseu Maciel, Pelotas, RS, Brasil.
  • Otoniel Geter Lauz Ferreira Universidade Federal de Pelotas (UFPel), Faculdade de Agronomia Eliseu Maciel, Pelotas, RS, Brasil.
  • Régis Antonio Teixeira Coelho Universidade Federal de Pelotas (UFPel), Faculdade de Agronomia Eliseu Maciel, Pelotas, RS, Brasil.
  • Pâmela Peres Farias Universidade Federal de Pelotas (UFPel), Faculdade de Agronomia Eliseu Maciel, Pelotas, RS, Brasil.
  • Roberta Farias Silveira Universidade Federal de Pelotas (UFPel), Faculdade de Agronomia Eliseu Maciel, Pelotas, RS, Brasil.

Keywords:

Lolium multiflorum, Lolium perenne, yield and regrowth rate.

Abstract

In recent years, various ryegrass cultivars have been released in the Brazilian market, but it is necessary to make a proper characterization of their productive and morpho-physiological traits, in order to support the choice of the most appropriate genotype for each environment and production system. This study aimed to evaluate, under greenhouse conditions, the productive and morpho-physiological traits of ryegrass cultivars, under pruning. Treatments consisted of three diploid [Comum-RS (Lolium multiflorum), Pronto® (Lolium multiflorum var. westerwoldicum) and Conquest® (Lolium multiflorum var. Italicum)] and four tetraploid cultivars [INIA Titan® (Lolium multiflorum var. Italicum), Winter Star® (Lolium multiflorum var. westerwoldicum), KLM 138® (Lolium multiflorum var. italicum) and Banquet II® (Lolium perenne)], in a completely randomized design, totaling seven treatments, with six replications. The variables evaluated were forage weight, absolute growth rate (AGR), leaf area (LA), leaf area ratio (LAR), leaf weight ratio (LWR), specific leaf area (SLA), net assimilation rate (NAR), relative growth rate (RGR), time for the first pruning and pruning intervals. Significant differences were observed for all variables. The INIA Titan® cultivar showed the highest forage weight, while the LAR, LWR, SLA, NRA and RGR were higher for the Pronto® cultivar and the AGR was higher for the Banquet II® cultivar. The Pronto® cultivar presented early yield (51 days until the first pruning) and fast regrowth (11 days for pruning interval) and the INIA Titan® rapid regrowth (15 days for pruning interval) combined with high forage weight.

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Author Biographies

Lucas Vargas Oliveira, Universidade Federal de Pelotas (UFPel), Faculdade de Agronomia Eliseu Maciel, Pelotas, RS, Brasil.

Departamento de Zootecnia, área de pastagens

Otoniel Geter Lauz Ferreira, Universidade Federal de Pelotas (UFPel), Faculdade de Agronomia Eliseu Maciel, Pelotas, RS, Brasil.

Departamento de Zootecnia, área de Pastagens e Ovinos

Régis Antonio Teixeira Coelho, Universidade Federal de Pelotas (UFPel), Faculdade de Agronomia Eliseu Maciel, Pelotas, RS, Brasil.

Departamento de Zootecnia, área de pastagens

Pâmela Peres Farias, Universidade Federal de Pelotas (UFPel), Faculdade de Agronomia Eliseu Maciel, Pelotas, RS, Brasil.

Departamento de Zootecnia

Roberta Farias Silveira, Universidade Federal de Pelotas (UFPel), Faculdade de Agronomia Eliseu Maciel, Pelotas, RS, Brasil.

Departamento de Zootecnia

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Published

2014-07-09

How to Cite

OLIVEIRA, L. V.; FERREIRA, O. G. L.; COELHO, R. A. T.; FARIAS, P. P.; SILVEIRA, R. F. Productive and morpho-physiological traits of ryegrass cultivars. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], Goiânia, v. 2, n. 1, p. 191–197, 2014. Disponível em: https://revistas.ufg.br/pat/article/view/24497. Acesso em: 24 nov. 2024.

Issue

v. 44, n. 2, Apr./Jun. 2014

Section

Crop Science

License

Authors will not be paid for published articles and must waive their copyright in favor of the PAT journal. On the other hand, they are solely responsible for the content of those articles, even if the Editor holds the right to adjust them to the norms of the journal. Authors are allowed to publish their articles simultaneously in their institutional repositories, as soon as the original publication at the PAT journal is mentioned.