Table 1 Temporal quantification of a Douglas-fir seed orchard’s mating system parameters (gametic contribution and gene flow, overall and true selfing rates) as affected by pollination environment manipulation along with yearly seed crop size, parental composition, and number of supplemental-mass-pollination (SMP) donors.

From: Temporal quantification of mating system parameters in a coastal Douglas-fir seed orchard under manipulated pollination environment

Year

80% Gametic Contribution

Gene Flow (%)

Overall Selfing (%)

True Selfinga (%)

Crop Size (kg)

Pollination Treatment

Parental Number

Seeds Number

SMP Donors Numberb

♀ (%)

♂ (%)

♀ + ♂ (%)

2005c

23

45

37

10

15

17

3.5

Bloom delay & SMP

49

801

16 (4)

2007d

39

55

52

13

12

14

19.3

SMP

57

402

23 (2)

2008e

57

59

64

28

16

22

2.4

Natural

58

489

N/A

2009f

39

45

49

18

17

21

68.8

SMP

66

207

14 (0)

  1. aSelfing rate estimated within the seed orchard population after excluding those resulted from gene flow. bNumber in brackets indicates the number of SMP external pollen donors. cLai, B. S. et al.5. dKorecký & El-Kassaby6, epresent study. fKess & El-Kassaby7.
Back to article page