European Journal of Scientific Research - EuroJournals

Germination Studies in Selected Native Desert Plants of Kuwait 342
were analyzed using the Student “t” test at 5% level of confidence. Mean separation was performed
using the Duncan’s Multiple Range Test (Little and hill, 1978).
3. Results
3.1. Cyperus conglomeratus
Seed germination in this species was promoted by both high temperature stratification and GA3
treatments (Table.1). The highest germination was achieved when seeds were maintained at 50ºC for
60 days. Extending the heat treatment beyond 60 days adversely affected germination. Similarly,
soaking seeds in 1000 ppm GA3 solution increased the germination from 10% in control to 74%.
Table-1: Effect of High Temperature Stratification and GA3 Treatment of Seeds on Germination in Cyperus
conglomeratus
Treatments* Final Germination (%)
Seed stratification at 50ºC (Days)
Control 3 a**
60 86 c
90 80 bc
150 54 b
210 72 bc
240 54 b
300 66 bc
S.E 12.52
Gibberellic acid (ppm)
Control 10 a
100 38 b
200 43 b
300 47 b
500 53 b
1000 74 c
S.E 9.28
* Stratification and GA3 treatment effects were tested separately in two experiments.
** The treatment means followed by the same letter within each experiment are not statistically different at P