Agronomic evaluation of Paspalum notatum Flügge under the influence of photoperiod

Revista Brasileira de Zootecnia (Print)

Ferreira, Priscila Becker¹  Dall'Agnol, Miguel²  Zuñeda, Marcos Perera²  Weiler, Roberto Luis²  Motta, Eder Alexandre Minski da²  Simioni, Carine²  Pereira, Emerson André³  Machado, Juliana Medianeira⁴ 

[1] Universidade Federal do Pampa, Uruguaiana, Brazil;Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil;Universidade Regional do Noroeste do Estado do Rio Grande do Sul, Ijuí, Brazil;Universidade de Cruz Alta, Cruz Alta, Brazil

关键词: ecotypes;    forage yield;    hybrids;    subtropical grass.;   

DOI  :  10.1590/s1806-92902017000100002

学科分类：兽医学

来源: Universidade Federal de Vicosa

【 摘 要 】

The objective of this study was to evaluate the influence of photoperiod on the forage yield by ecotypes and intraspecific hybrids of P. notatum. Tetraploid ecotypes from the United States Department of Agriculture and the National University of the Northeast in Argentina, in addition to six intraspecific hybrids, totaling 19 ecotypes, were assessed. The materials evaluated were subjected to an extended photoperiod (14 h of light) and natural photoperiod from July 2011 to October 2012. The experimental design was a completely randomized factorial scheme of 19 × 2 (ecotypes × photoperiod) consisting of five replicates. The materials were influenced differentially by the variation in photoperiod, with one group showing high sensitivity, whereas another, smaller group, was insensitive to this factor. The use of materials with differentiated responses to photoperiod in different climatic regions can be an important tool to increase forage yield of Paspalum notatum.

【 授权许可】

Unknown