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Hybridization in Betula Alleghaniensis Britt. and B. Lenta L.: A Comparative Analysis of Controlled Crosses
Forest Science (1971)
  • Terry L. Sharik, Utah State University
  • Burton V Barnes
Abstract

Progenies of the crosses B. lenta X lenta, B. alleghaniensis X alleghaniensis, and B. lenta X alleghaniensis, at age 27, were compared using 47 morphological characters of leaves, fruit, bark, and pollen. Stepwise discriminant analysis indicated that number of cilia of bracts of fruiting catkins, length of bark exfoliation, and pollen diameter, in that order, gave the best separation of three taxa. B. lenta (2n = 28) was distinguished from B. alleghaniensis (2n = 84) and the hybrid by cilia alone. B. alleghaniensis and the hybrid were not completely separated until all three characters were considered. Principal components analysis using 25 morphological characters, and hybrid indices based on 47 characters, also indicated that the F1 hybrid was more similar to B. alleghaniensis than to B. lenta...

Disciplines
Publication Date
1971
Citation Information
Terry L. Sharik and Burton V Barnes. "Hybridization in Betula Alleghaniensis Britt. and B. Lenta L.: A Comparative Analysis of Controlled Crosses" Forest Science Vol. 17 Iss. 4 (1971)
Available at: http://works.bepress.com/terry_sharik/62/