H. Hertel et N. Kohlstock, DIFFERENT GENETIC STRUCTURES OF 2 MORPHOLOGICAL TYPES OF SCOTS PINE (PINUS-SYLVESTRIS L), Silvae Genetica, 43(5-6), 1994, pp. 268-272
The management of Scots pine forests in the Northeastern German lowlan
d distinguishes two morphological types, the so called A-type with a n
arrow crown and finer branches, which can perform timber of a high qua
lity, and the so called B-type with a wide crown and thicker branches.
In the present work first results of a genetic analysis with isozyme
markers of these two morphological types selected from three provenanc
es are shown. We found a higher level of heterozygosity based on a hig
her number of rare alleles in the A-type group compared with the B-typ
e group. The silvicultural thinning practice which favours the A-type
trees by removing the B-type trees is discussed with regard to the gen
etic aspect.