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

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Jiayin Song ◽  
Blaise Ratcliffe ◽  
Tony Kess ◽  
Ben S. Lai ◽  
Jiří Korecký ◽  
...  
Keyword(s):  
Mating System ◽  
Seed Orchard ◽  
Douglas Fir ◽  
System Parameters ◽  
Pollination Environment

Mating system and pollen contamination in a Douglas-fir clone bank

1986 ◽  
Vol 16 (6) ◽  
pp. 1314-1319 ◽  
Author(s):  
Willi Fast ◽  
Bruce P. Dancik ◽  
Ralph C. Bower
Keyword(s):  
Mating System ◽  
Seed Orchard ◽  
Douglas Fir ◽  
Pollen Contamination ◽  
Outcrossing Rates ◽  
Natural Stands

Pollen contamination and mating system of Douglas-fir (Pseudotsugamenziesii (Mirb.) Franco) clone banks used as an interim seed orchard near Nanaimo, B.C., were estimated. Pollen contamination (m) from surrounding clone banks and natural stands ranged from 0.44 to 0.89. Overall contamination over 2 years was estimated to be 0.65. Pollen contamination varied significantly over 2 pollination years. Multilocus outcrossing rates (t) of four clone banks over 2 years ranged from 0.51 to 1.09, with an unweighted mean outcrossing estimate of 0.72. Outcrossing varied significantly among clone banks and pollination years. An excess of homozygotes suggests that these seed may be inbred. Although pollen contamination and inbreeding may be a problem in these clone banks, the seed may still be useful operationally.

Mating system variation among individual ramets in a Douglas-fir seed orchard

1990 ◽  
Vol 20 (10) ◽  
pp. 1672-1675 ◽  
Author(s):  
V. J. Erickson ◽  
W. T. Adams
Keyword(s):  
Mating System ◽  
Seed Orchard ◽  
Floral Biology ◽  
Douglas Fir ◽  
Pollen Production ◽  
Male And Female ◽  
Floral Phenology ◽  
Female Flowering ◽  
High Degree

Proportions of outcrossed progeny (ti) in five ramets of five clones with variable floral phenology and pollen production were investigated in a Douglas-fir (Pseudotsugamenziesii var. menziesii (Mirb.) Franco) seed orchard. Estimates of ti[Formula: see text] were significantly heterogeneous among the five ramets, ranging in value from 0.50 to 1.07. Variation in [Formula: see text] corresponded well with variation among ramets in floral biology. Ramets that flowered much earlier than other individuals in the orchard and (or) had a high degree of synchrony in timing of male and female flowering produced the lowest [Formula: see text].

Joint estimation of immigration and mating system parameters in gymnosperms using the EM algorithm

1991 ◽  
Vol 83 (2) ◽  
pp. 137-140 ◽  
Author(s):  
C. Y. Xie ◽  
F. C. Yeh ◽  
B. P. Dancik ◽  
C. Strobeck
Keyword(s):  
Em Algorithm ◽  
Mating System ◽  
Joint Estimation ◽  
System Parameters ◽  
The Em Algorithm

scholarly journals A multilocus estimator of mating system parameters in plant populations

1981 ◽  
Vol 78 (2) ◽  
pp. 1298-1302 ◽  
Author(s):  
D. V. Shaw ◽  
A. L. Kahler ◽  
R. W. Allard
Keyword(s):  
Mating System ◽  
Plant Populations ◽  
System Parameters
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