Schriften zu Genetischen Ressourcen - Genres

D. PEROVIC et al.
Tab. 1: List of traits examined with a cardinal value for all accessions in the
collection
Trait Minimal value Maximal value Average
Plant height (cm) 56.00 94.00 76.96
Total tillering 1.67 16.00 7.30
Number of nodes 3.20 6.00 4.63
Productive tillers/plant 1.00 9.00 3.66
Sterile tillers/plant 0.60 8.83 3.66
Primary spike length (cm) 2.52 14.00 7.94
Plant weight (g) 2.01 18.93 8.38
Flag leaf length (cm) 4.25 20.55 11.68
Flag leaf width (cm) 0.45 1.76 0.91
Sowing/flowering period (days) 89.00 111.00 101.61
Fertile spikelets/spike 4.09 71.00 33.55
Sterile spikelets/spike 1.80 21.60 6.26
Grains/primary spike 7.00 86.00 28.85
Grain mass of primary spike (g) 0.35 2.58 1.23
Grain mass per plant (g) 0.48 8.37 3.32
Harvesting index 0.20 0.60 0.39
All the collected genotypes were awned. Out of 106 genotypes, two (MB530 and
MB532) showed resistance to BaMMV. After artificial inoculation with a single spore
isolate of leaf rust, only one resistant genotype (MB1012) was found. The dendrogram
of the barley landraces in the collection is presented in Figure 1. They are
clustered in three groups, of which the first two (I and II) are large (47 and 52 landraces,
respectively), while the third one (III) is small and consists of only four landraces.
Three barley genotypes are out-grouped from these main groups, each of
them on the next higher level of clustering.
Discussion
In group I of the dendrogram (Fig. 1), most two-rowed landraces are included, while
group II comprises almost all six-rowed landraces. This shows that one qualitative
morphological character can strongly affect grouping, probably because of linkage to
some of the traits scored. However, this is not the case with other analysed qualitative
traits of barley. Therefore, genotypes with different awn-dent and spike form are
randomly distributed in all clusters/subclusters. The presence of few six-rowed landraces
(MB901, MB959, MB1010, MB1012, MB1015 and MB1017) in group I, as well
as the presence of few two-rowed landraces (MB548, MB995 and MB1252) in group
II suggests that some of the genotypes analysed differ significantly from all other
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