Revue internationale d'écologie méditerranéenne International ...

PHENOTYPIC AND PHENOLOGICAL BEHAVIOURS OF CLONES OF NATURAL POPULATIONS OF ATRIPLEX HALIMUS ◆
two population. Marrakech and Idelssen populations
did not differ significantly (P < 0.05) in their inflorescence
length. In non-irrigated treatment, the length of
inflorescence was decreased significantly for the three
populations (table 3).
Number of inflorescence ramifications
Inflorescence ramification number differ significantly
between the treatment. In irrigated treatment, the three
population presented a hight number of inflorescence
ramifications than in non-irrigated treatment. Sidi Bouzid
and Marrakech populations presented the highest values
(table 3).
ecologia mediterranea, tome 29, fascicule 2, 2003, p. 179-188
FRUITING
The statistical data showed that the population (origin
of the plant material) and the interaction of population
by treatment generates a highly significant variability (P
< 0.001) for the rate of immature seeds and the rate
of infestation (table 4). Treatment generates a highly
significant effect of Individuals for the mass of 100
mature seeds. Marrakech and Sidi Bouzid populations
have presented the most important rates of immature
seeds (table 5) in irrigated treatment. In non-irrigated
treatment, the immature seeds decreased significantly in
Marrakech population, while they increased significantly
in Idelssen population. For the rates of infestation, the
F
Source of variance df IR IS SW
Population 2 68.289*** 295.648*** 2.85
Year 1 0.68 0.572 0.759
Treatment 1 4.02* 0.392 22.27***
Population by year 2 1.125 0.09 0.367
Population by Treatment 2 36.03*** 83.60*** 2.309
Year by treatment 1 4.66* 0.017 0.572
Population by year by Treatment 2 0.18 0.23 0.736
* (P < 0.05); ** (P < 0.01); *** (P < 0.001)
Table 5. Mean values and standard error
of parameters : infestation rate (IR),
immature seeds rate (IS) and dry weight
of 100 seeds (SW)
of three surveyed populations.
Means followed by the same letter are not
different significantly at the 0.05 level.
Table 4. Analyse of variance (ANOVA) of parameters: infestation (IR), immature seeds (IS)
and dry weight of 100 seeds (SW) of individuals of the three surveyed populations.
IR (%)
IS (%)
SW (g)
Treatment
Irrigation Non irrigated
Sidi Bouzid (Safi ) 3.099 ± 2.16b 1.42 ± 0.81b
Marrakech 4.64 ± 2.059ab 6.71 ± 4.5a
Idelssen (Ouarzazate) 2.017 ± 1.49b 3.58 ± 1.91b
Sidi Bouzid (Safi ) 42.67 ± 12.63a 40.28 ± 12.87a
Marrakech 38.98 ± 15.42a 23.34 ± 5.84b
Idelssen (Ouarzazate) 4.14 ± 1.72c 21.7 ±16.48b
Sidi Bouzid (Safi ) 0.092 ± 0.004a 0.069 ± 0.011b
Marrakech 0.086 ± 0.018ab 0.066 ± 0.0044b
Idelssen (Ouarzazate) 0.097 ± 0.007a 0.069 ± 0.01b
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