Progeny Testing Longleaf Pine at Two Locations

E. Bayne Snyder; Calvin F. Bey

Treesearch

Progeny Testing Longleaf Pine at Two Locations

Informally Refereed

Authors:

E. Bayne Snyder, Calvin F. Bey

Year:

1978

Type:

Research Note

Station:

Southern Research Station

Source:

Res. Note SO-240. New Orleans, LA: U.S. Department of Agriculture, Forest Service, Southern Forest Experiment Station. 4 p.

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Abstract

Means for brown-spot infection and 3- and 8-year height growth were determined in progeny testing of 540 parents in two Gulfport, Mississippi, plantiflgs and an Alexandria, Louisiana, planting, and of 60 of the parents at a subsequent Alexandria planting. To estimate growth at ages 5 and 8. both degree of brown-spot infection and height growth at age 2 were necessary independent variables, but for growth at age 8, 3rd-year height growth alone was sufficient. Families selected for rapid growth and brown-spot resistance in one location may not be the ones selected in another. Likewise, those selected in a brown-spot free area differed from those selected in an area where brown spot was prevalent. Implications for future breeding and seed orchard development are discussed.

Keywords

Pinus palustris, genotype x enviroment interactions, survival, growth, brown-spot needle blight

Citation

Snyder, E. Bayne; Bey, Calvin F. 1978. Progeny Testing Longleaf Pine at Two Locations. Res. Note SO-240. New Orleans, LA: U.S. Department of Agriculture, Forest Service, Southern Forest Experiment Station. 4 p.