Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 97
Book Description
Proceedings of a Forest Genetics Workshop, October 25-27, 1972. Macon, Georgia
Proceedings of a Forest Genetics Workshop, October 25-27, 1962, Macon, Georgia
Proceedings of a Forest Genetics Workshop
Proceedings of a Meeting of the Working Party on Progeny Testing, Held at the Georgia Forestry Center, Macon, Georgia, October 25th Through 27th, 1972
Author: International Union of Forestry Research Organizations. Working Party on Progeny Testing
Publisher:
ISBN:
Category : Forest genetics
Languages : en
Pages : 175
Book Description
Publisher:
ISBN:
Category : Forest genetics
Languages : en
Pages : 175
Book Description
Progeny Testing
Loblolly Pine
Author: Robert P. Schultz
Publisher: U.S. Government Printing Office
ISBN:
Category : Nature
Languages : en
Pages : 516
Book Description
Publisher: U.S. Government Printing Office
ISBN:
Category : Nature
Languages : en
Pages : 516
Book Description
Genetic Evaluation of Rapid Height Growth in Pot- and Nursery-grown Scotch Pine
Author: Maurice E. Demeritt
Publisher:
ISBN:
Category : Forest genetics
Languages : en
Pages : 16
Book Description
S2Genetic and environmental components of variance for 2-year heights of offspring from inter- and intra-provenance matings in Scotch pine (Pinus sylvestris L.) were studied to determine which provenances and selection methods should be used in a program to improve ornamental and Christmas trees. The study represents 11 experiments (parental groups), consisting of families from 7 diallel matings minus selfs in 5 different provenances, 3 factorial matings between provenances, and 1 from open pollination. The seedlings for the 11 experiments were grown in pots and in a nursery for 2 years. Heritability estimates of 2-year height from inter- and intra-provenance matings tended to be larger on a family basis than on an individual basis, with the larger estimates being from nursery evaluations. In general, additive genetic variance was larger than dominance variance, although dominance variance increased in provenance hybrids. Nursery evaluation was preferred to pot evaluation of 2-year height because heritability estimates were larger and error variances were smaller for the experiments evaluated. Individual selection in the nursery within the German provenance seems to be the best method for improvement of 2-year height of the provenances evaluated in this study, although the rate of improvement in the Spanish provenance may be greater. Simple recurrent selection would be a good method for improvement of traits important to the Christmas tree producing industry. S3.
Publisher:
ISBN:
Category : Forest genetics
Languages : en
Pages : 16
Book Description
S2Genetic and environmental components of variance for 2-year heights of offspring from inter- and intra-provenance matings in Scotch pine (Pinus sylvestris L.) were studied to determine which provenances and selection methods should be used in a program to improve ornamental and Christmas trees. The study represents 11 experiments (parental groups), consisting of families from 7 diallel matings minus selfs in 5 different provenances, 3 factorial matings between provenances, and 1 from open pollination. The seedlings for the 11 experiments were grown in pots and in a nursery for 2 years. Heritability estimates of 2-year height from inter- and intra-provenance matings tended to be larger on a family basis than on an individual basis, with the larger estimates being from nursery evaluations. In general, additive genetic variance was larger than dominance variance, although dominance variance increased in provenance hybrids. Nursery evaluation was preferred to pot evaluation of 2-year height because heritability estimates were larger and error variances were smaller for the experiments evaluated. Individual selection in the nursery within the German provenance seems to be the best method for improvement of 2-year height of the provenances evaluated in this study, although the rate of improvement in the Spanish provenance may be greater. Simple recurrent selection would be a good method for improvement of traits important to the Christmas tree producing industry. S3.
Proceedings
Agriculture Handbook
Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 520
Book Description
Set includes revised editions of some issues.
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 520
Book Description
Set includes revised editions of some issues.
Proceedings of a Meeting of the Working Party on Progeny Testing, International Union of Forest Research Organizations, Held at the Georgia Forestry Center, Macon, Georgia, October 25th Through 27th, 1972
Author: International Union of Forestry Research Organizations. Working Party on Progeny Testing. Meeting
Publisher:
ISBN:
Category : Forest Genetics
Languages : en
Pages : 186
Book Description
Publisher:
ISBN:
Category : Forest Genetics
Languages : en
Pages : 186
Book Description