DIGITALNA ARHIVA ŠUMARSKOG LISTA
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| ŠUMARSKI LIST 5-6/2023 str. 23 <-- 23 --> PDF |
BA and AÇ were in the same group. In terms of resin canal number, AH, TS, GE and BA were in the same group. There were 3 different groups in terms of central cylinder width. First was AY, AH, BA, AÇ, second was TS, KT, EÇ, third was GE. ANOVA resulted in significant differences in CD, ENW and ENT needle anatomical characters among the seven elevation limits (Table 4). However, no significant results were found for NT, NW, CT, EW, ET, SW, ST, MT, CN, CCN, CW, CCT and ECN characters. The structure of the 64 individuals and eight populations of Scots pine inferred by the cluster analysis (UPGMA) are presented with the hierarchical tree (Figure 3). These results clearly show that trees collected from the same habitat zones are not clustered together however they (64 individuals) are divided into more than seven distinct subclusters belonging to different habitat zones (Figure 3A). However, the structure of eight Scots pine populations inferred by the cluster analysis clearly indicated that studied populations can be divided into three distinct subclusters (Figure 3B). The first subcluster only consisted of GE population and the second subcluster consisted of TS, KT and EC populations. Finally, the third sub-cluster consisted of the remaining five populations (BA, AY, AC and AH). As seen in Figure 2B, the most similar populations were BA and AY, and the most distinct population was GE. The results of the discriminant analysis are presented in two-dimensional plot in the Figure 3. The first discriminant function (DF-1) explained 90.03% of the total variation, and the second discriminant function (DF-2) explained 5.15%. The discriminant analysis showed that the sixty-four trees from eight natural populations of Scots pine in Turkiye can not be clearly separated based on needle anatomical properties. PCA also verified that some anatomical traits are more important in delimiting the investigated taxa (Letters at the end of bars at Figure 4). According to Figure 4, the needle anatomical traits contributing most to separation of examined population are NW, CW, NT and CCT which is also among the significant traits revealed by ANOVA. DISCUSSION AND CONCLUSION Rasprava i zaključci Altitude and climate have a decisive influence on the distribution of plant taxa. The altitude is one of the most |