Enhancement of Seed Germination in Common Carpetgrass and Centipedegrass Seed

in HortScience
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  • 1 Department of Horticulture, Louisiana State University Agricultural Center, 137 J.C. Miller Hall, Baton Rouge, LA 70803
  • | 2 Department of Horticulture, Louisiana State University Agricultural Center, 137 J.C. Miller Hall, Baton Rouge, LA 70803
  • | 3 Department of Horticulture, Louisiana State University Agricultural Center, 137 J.C. Miller Hall, Baton Rouge, LA 70803
  • | 4 Department of Horticulture, Louisiana State University Agricultural Center, 137 J.C. Miller Hall, Baton Rouge, LA 70803

Priming or presoaking seed of common carpetgrass (Axonopus affinis Chase) and centipedegrass [Eremochloa ophiuroides Munro. (Kunz)] increased germination percentage and decreased mean time of germination (MTG) at 20, 25, and 30 °C. The effect of presoaking and priming was dependent on grass species and temperature. The optimum seed germination temperature for both of these warm-season species was 30 °C. Maximum effect on common carpetgrass or centipedegrass seeds was achieved by priming in 2% KNO3; higher concentrations did not improve germination percentage or MTG, and 4% was in some cases detrimental. Germination was higher and MTG lower at 20 and 30 °C than at 15 °C. Presoaking common carpetgrass and centipedegrass seeds was the most efficient seed enhancement treatment for germination at 30 °C.

Contributor Notes

To whom reprint requests should be addressed. E-mail address: ebush@agctr.lsu.edu
E-mail address: pwilson@agctr.lsu.edu
Present address: Novartis Crop Protection Inc., 11561 Hemlock Drive, Overland Park, KS 66210.
Present address: Department of Plant Pathology and Crop Physiology, Louisiana State Univ. Agricultural Center, 302 Life Sciences Bldg., Baton Rouge, LA 70803.