Germination and seedling emergence of glyphosate-resistant and susceptible biotypes of goosegrass (Eleusine indica [L.] Gaertn.)

Ismail Sahid, T. S. Chuah, S. Salmijah, Y. T. Teng, R. W. Schumacher

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

Effects of environmental factors on the germination and seedling emergence of glyphosate-resistant (R) and -susceptible (S) biotypes of Eleusine indica (L.) Gaertn. were examined under laboratory and greenhouse conditions. The R biotype exhibited a higher germination percentage compared with the S biotype at constant temperatures of 20 and 35°C under dark conditions, and alternating temperatures of 30/25°C, and 35/25°C during a 12 h photo period. For both biotypes, germination was optimal at alternating temperatures of 30/20°C and 35/20°C. However, there was no significant difference (P>0.05) in the germination between the R and S biotypes at these temperature regimes. The germination of both biotypes was inhibited by osmotic stress imposed by a water potential of -0.80 MPa. When the moisture stress was released and the seeds were subsequently transferred to distilled water, the germination was enhanced to approximately 90% and 16% for the R and S biotype seeds, respectively. Higher emergence rates were obtained in shallow seed depths (0 or 2 cm) compared to deep depths. Emergence percentage of the R biotype was higher than that of the S biotype at 0 cm and 2 cm depths. The maximum emergence percentage of the R biotype was higher than that ors biotype when seeds were sown on the surface of either loamy or clay loam soil taken from three different sites.

Original languageEnglish
Pages (from-to)177-185
Number of pages9
JournalWeed Biology and Management
Volume2
Issue number4
DOIs
Publication statusPublished - 2002

Fingerprint

Eleusine indica
biotype
glyphosate
seedling emergence
biotypes
germination
seed
seeds
temperature
clay loam soils
clay loam
osmotic stress
photoperiod
water potential
environmental factor

Keywords

  • Eleusine indica
  • Glyphosate-resistant
  • Moisture stress
  • Planting depths
  • Soil types
  • Temperature

ASJC Scopus subject areas

  • Ecology
  • Plant Science
  • Agronomy and Crop Science

Cite this

Germination and seedling emergence of glyphosate-resistant and susceptible biotypes of goosegrass (Eleusine indica [L.] Gaertn.). / Sahid, Ismail; Chuah, T. S.; Salmijah, S.; Teng, Y. T.; Schumacher, R. W.

In: Weed Biology and Management, Vol. 2, No. 4, 2002, p. 177-185.

Research output: Contribution to journalArticle

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