33 / 90
Table 2.
P.O ratio values correlated to te breeding systems by Cruden (1973, 1976)
and Dafni (1992)
Breeding systenm
P:0 ratio values
After Dafni
After Cruden
min
max
mean
mean
Obligate autogamy
18.1
39.0
28.55
27.7 ± 3.1
Facultative autogamy
31.9
396.0
213.95
168.5 ± 22.1
Facultative ксеногамия
244.7
2588.0
1416.35
796.6 + 87.7
Obligate ксеногамия
2108.0
195525.0
98816.50
5859.2 + 936.5
Table 3.
Interpretation of the breeding systems data of the investigated taxa
of Gentianaceae family obtained by indirect, P:0 ratio and direct, exclusion techniques
methods ( Кожу харо в а , 1994, K o z u h a r o v a , 1998*)
Indirect method - P :0 ratio Direct metods - exclusion
techniques ( К о ж у х а р о в а , 1994,
K o z u h a r o v a, 1998)
Maturing of
anthers and
stygmas -
Taxa
P:0 ratio
mean Breeding system
Breeding system*
Gentiana lutea
13147.1 Obligate xenogamy Spontaneous-self-pollination
-
Protandry
Self-compatibility
1 day
Centiana punctata
2026.3 Facultative xenogamy Spontaneous-self-pollination -
Protogyny
Obligate xenogamy Self-compatibility
7
1 day
Gentiana asclepiadea
4262.2 Obligate xenogamy Spontaneous-self-pollination
-
Protandry
Self-compatibility
+
2-4 days
Gentiana pyrenaica
639.8 Facultative xenogamy Spontaneous-self-pollination ? +
Protandry
Self-compatibility
? +
3-4 days
Gentiana verna
293.1 Facultative xenogamy Spontaneous-self-pollination -
Homogamy
Facultative autogamy Self-compatibility
+ (simultaneously)
Gentiana utriculosa
214.9 Facultative autogamy Spontaneous-self-pollination
Homogamy
Self-compatibility
+ (simultaneously)
Gentianella bulgarica
566.1 Facultative xenogamy Spontaneous-self-pollination
?
Facultative autogamy Self-compatibility
Centaurium erythraea
217.7 Facultative autogamy Spontaneous-self-pollination
7
Facultative xenogamy Self-compatibility
Swertia perennis
5790.3 Obligate xenogamy Spontaneous-self-pollination
7
___________________________________________ Self-compatibility_________________________
Table
4. Results of the tests for spontaneous-self-pollination and self-compatibility
of the investigated taxa of Gentianaceae family obtained direct, exclusion techniques
methods ( Кожу харо в а , 1994, K o z u h a r o v a, 1998)
Spontaneous selfing______________________Hand selfing
Covered
flowers
Fruit set Hand selfed
flowers
Fruit set
Seed set
average number
of seeds
% of
fertilization
Gentiana lutea
319
0
10
10
81
66 %
Gentiana punctata
19
0
10 test failed
Gentiana asclepiadea
95
0
early female stage
109
62 %
late female stage
88
50 %
Gentiana pyrenaica
30
test
failed
Gentiana verna
15
0
10
10
Gentiana utriculosa
30
30
30
30
33
Электронная Научная СельскоХозяйственная Библиотека