Black Walnut Provenance Performance in Kansas

Abstract

Fifteen seed sources of black walnut were planted at Manhattan, Kansas (39.2°N and 96.5°W) in 1967, the western edge of its natural range. After 22 years, height, dbh, and survival measurements revealed that local trees (Kansas) and trees from within 200 miles south of the planting site grew tallest. Height and dbh correlations were highly significant and increased when compared to successive 5-yr interval measurements. Geographic and climatic variables of seed sources did not provide a significant predictive regression model. Low survival limited the success of some sources, such as two from Indiana, in this Kansas plantation. North. J. Appl. For. 9(2):41-43.

Genetic homogeneity in Juglans nigra (Juglandaceae) at nuclear microsatellites

“…In light of the differences in adaptive traits such as growth and survival observed in provenance tests performed in black walnut (e.g., Bey, 1980;Bresnan et al, 1994), the genetic homogeneity observed in this study appears paradoxical, but the absence of an association between patterns of phenotypic diversity for quantitative or adaptive traits vs. the genetic diversity of putatively neutral genetic markers has been noted by numerous researchers (e.g., Milligan et al, 1994;Karhu et al, 1996;Lynch, 1996;Reed and Frankham, 2001;McKay and Latta, 2002;Bekessy et al, 2003). In light of the differences in adaptive traits such as growth and survival observed in provenance tests performed in black walnut (e.g., Bey, 1980;Bresnan et al, 1994), the genetic homogeneity observed in this study appears paradoxical, but the absence of an association between patterns of phenotypic diversity for quantitative or adaptive traits vs. the genetic diversity of putatively neutral genetic markers has been noted by numerous researchers (e.g., Milligan et al, 1994;Karhu et al, 1996;Lynch, 1996;Reed and Frankham, 2001;McKay and Latta, 2002;Bekessy et al, 2003).…”

“…On the other hand, there have been numerous common garden progeny and provenance trials in black walnut (Bey, 1979;Beineke, 1989;Bresnan et al, 1994;Miller, 1995;Victory et al, 2004;Woeste and McKenna, 2004). Such quantitative genetic analyses have demonstrated clear adaptational and performance differences among different sources (Bey, 1980;Bresnan et al, 1994). Results from broad-scale studies of the genetic structure at the DNA level supplement those from common garden quantitative genetic studies; these two types of information, taken together, can lead to the formulation of optimal gene conservation strategies (Rhodes and Chesser, 1994;Eriksson, 1995;Petit et al, 1998).…”

“…Studies of the population genetic structure of black walnut have been limited in geographical scope (Rink et al, 1989;Busov et al, 2002) and sample size (Fjellstrom and Parfitt, 1994). On the other hand, there have been numerous common garden progeny and provenance trials in black walnut (Bey, 1979;Beineke, 1989;Bresnan et al, 1994;Miller, 1995;Victory et al, 2004;Woeste and McKenna, 2004). Such quantitative genetic analyses have demonstrated clear adaptational and performance differences among different sources (Bey, 1980;Bresnan et al, 1994).…”

Black walnut alley cropping is economically competitive with row crops in the MidwestUSA

“…Growth of black walnut DBH reported in the literature (Geyer and Naughton , Bey , Schlesinger and Williams , Wendel and Dorn , Bresnan et al. , Li et al. , Dupraz et al.…”

“…2. Growth of black walnut DBH reported in the literature (Geyer and Naughton 1970, Bey 1980, Schlesinger and Williams 1984, Wendel and Dorn 1985, Bresnan et al 1992, Li et al 1992, Dupraz et al 1999, Bohanek and Groninger 2003, Ares and Brauer 2004, Heiligmann and Schneider 2006, Pedlar et al 2006, S alek et al 2012. The dashed line is the Korf fitted curve of the literature data, with the equation shown.…”