Genetic variation of F1 hybrids from controlled crosses between Pinus montana var. rostrata and Pinus sylvestris in anatomical needle traits

Abstract

One hundred and seventeen individuals representing ten hybrid families from controlled crosses between Pinus montana var. rostrata and Pinus sylvestris were examined with respect to eight traits of anatomy of their two-year old needles. The biometric data obtained by measurements of anatomical traits were used to conduct multivariant statistical analyses with discriminant analysis and Mahalanobis distances as principal methods. Some of the hybrid families were similar to parental species representing the typ Montana or Sylvestris, and some less numerous intermediate forms. The results of the anatomical studies correspond to a great extent to those obtained for isoenzymes and antigene proteins (Prus-Głowacki and Stephan 1998).