Genetic variation in growth of outcrossed, selfed and open-pollinated progenies of Eucalyptus regnans and some implications for breeding strategy

• Published in: Silvae genetica Vol. 37; no. 3-4; pp. 124 - 131
• Main Authors: GRIFFIN, A. R, COTTERILL, P. P
• Format: Journal Article
• Language: English
• Published: Frankfurt am Main Sauerländer 1988
• Subjects: Agronomy. Soil science and plant productions; amelioration des plantes; arboles forestales; arbre forestier; autofecondation forcee; autofecundacion; Biological and medical sciences; Classical and quantitative genetics. Population genetics. Molecular genetics; Classical genetics, quantitative genetics, hybrids; crecimiento; croisement; croissance; cross pollination; crossbreeding; cruzamiento; eucalyptus regnans; fitomejoramiento; forest trees; Fundamental and applied biological sciences. Psychology; Generalities. Genetics. Plant material; genetic variation; Genetics and breeding of economic plants; Genetics of eukaryotes. Biological and molecular evolution; growth; plant breeding; plantas; plante; plants; polinizacion cruzada; pollinisation croisee; Pteridophyta, spermatophyta; selfing; variacion genetica; variation genetique; Vegetals; volume; volumen; Genetic variability; Growth; Self fertilization; Artificial selection; Statistical study; Mating system; Progeny; Breeding line; Dicotyledones; Angiospermae; Myrtaceae; Inbreeding; Spermatophyta; Hardwood forest tree; Heritability
• ISSN: 0037-5349; 2509-8934

Open-pollinated, selfed and outcrossed progenies were derived from thirteen parent trees in natural stands of Eucalyptus reganas , and evaluated in a field trial. It was concluded that vigorous open-pollinated progeny were indicative of high breeding value, but that the converse could not necessarily be claimed. Important implications for breeding strategy are that the role of family selection during the initial phase of domestication of E. regnans requires re-examination. Also that selfed progeny (which are more easily produced than outcrosses) may prove useful for estimation of genetic parameters and future breeding.