Department of Botany, Kumaon University, Almora, India–263 643.
In the present investigation certain ecological aspects of two C4 grasses were studied. Increasing water stress and temperature reduced percentage germination in both the grasses. Red-light promoted germination while far-red light inhibited it. Biomass and total leaf area increased with age, rootshoot ratio, specific-leaf-area and leaf-area ratio fluctuated with time while leaf-weight ratio remained unaffected by the age of plant. Further the seeds of Dactylis glomerata Linn. responded well to different concentrations of phytohormones (in ppm) as compared to Festuca-gigantea Linn.. Noticeable response was observed at low concentrations. The percentage germination inD. glomereta was upto 80% and 85% with 5ppm of IAA and GA respectively.
C4 grasses, phytohormones, biotic, abiotic, community, Dactyalis glomereta Linn, Festuca gigantea Linn
