Accelerated aging and vigor of Brachiaria brizantha cv Insurgente grass seeds

Authors

  • Edgar Hernández Flores Ganadería-Campus Montecillo, Colegio de Postgraduados en Ciencias Agrícolas. Carretera México-Texcoco, km 36.5. Montecillo, Texcoco, Estado de México. CP. 56230. Tel. (595) 9520200, ext. 75051, Fax. (595) 9520279
  • Bertín Maurilio Joaquín Torres Universidad del Papaloapan. Av. Ferrocarril s/n, Cd. Universitaria, Loma Bonita, Oaxaca, México. CP. 68400. Tel. (281) 8729230, ext. 110
  • Adrián Raymundo Quero Carrillo Ganadería-Campus Montecillo, Colegio de Postgraduados en Ciencias Agrícolas. Carretera México-Texcoco, km 36.5. Montecillo, Texcoco, Estado de México. CP. 56230. Tel. (595) 9520200, ext. 75051, Fax. (595) 9520279
  • Alfonso Hernández Garay Ganadería-Campus Montecillo, Colegio de Postgraduados en Ciencias Agrícolas. Carretera México-Texcoco, km 36.5. Montecillo, Texcoco, Estado de México. CP. 56230. Tel. (595) 9520200, ext. 75051, Fax. (595) 9520279
  • Filogonio Jesús Hernández Guzmán Ganadería-Campus Montecillo, Colegio de Postgraduados en Ciencias Agrícolas. Carretera México-Texcoco, km 36.5. Montecillo, Texcoco, Estado de México. CP. 56230. Tel. (595) 9520200, ext. 75051, Fax. (595) 9520279

DOI:

https://doi.org/10.29312/remexca.v8i3.43

Keywords:

Brachiaria brizantha, accelerated aging test, germination, insurgent grass, vigor

Abstract

With the objective of evaluating seed vigor tests of Brachiaria  brizantha cv. Insurgente, two seeds lots with different initial  physical and physiological quality, harvested on September  28th (lot 1, autumn) and December 21th (lot 2, winter) of the  same year, were subjected to six temperatures (40, 41, 42,  43, 44 and 45 °C) and seven aging periods (24, 36, 48, 60, 72,  84 and 96 h) at 100% HR. A completely randomized design  was used, with factorial arrangement and four replications.  Seed vigor varied between temperatures (p< 0.001). The  Autumn harvest (lot 1) showed a higher germination value  (28.9%) at 40 ºC; similar value (p> 0.05), at 41 ºC (24.7%);  but different and superior to the other levels (p< 0.05). For  the seeds harvested in winter (lot 2), the highest germination  value (50%) was obtained at 40 °C. The aging period had  an effect on seeds vigor (p< 0.001). For the autumn seeds,  the highest germination value (40.6%) was obtained at 48  h, similar value (p> 0.05) to that obtained at 36 h (34.7%),  but different and superior to the other periods; while for lot 2  (winter harvest), the highest value (63%) was obtained at 60  h. The interaction was significant between lots (p< 0.001);  in lot 1, the highest germination occurred at 40 ºC/48 h and  40 ºC/60 h, with values of 46 and 47%, respectively; while for lot 2 (winter harvest), the highest value (69.2%) was  obtained at 40 °C/60 h. The accelerated aging test detected  differences between seeds lots of B. brizantha cv Insurgente  and the combination 40 ºC/48 h and 40 ºC/60 h were the  most effective treatments to evaluate the vigor between  seed lots. Seeds harvested in winter showed greater vigor  and consistent germination 

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Vol. 8, Núm. 3

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Published

2017-08-08

How to Cite

Hernández Flores Edgar, Joaquín Torres Bertín Maurilio, Quero Carrillo Adrián Raymundo, Hernández Garay Alfonso, and Hernández Guzmán Filogonio Jesús. 2017. “Accelerated Aging and Vigor of Brachiaria Brizantha Cv Insurgente Grass Seeds”. Revista Mexicana De Ciencias Agrícolas 8 (3). México, ME:705-11. https://doi.org/10.29312/remexca.v8i3.43.

Issue

Vol. 8 No. 3 (2017)

Section

Investigation notes

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