
Figure 1.
The course of the flowering of repeat-flowering roses with two flushes of blooms
AB – total flowering duration, CD – full flowering duration in first flush, EF – full flowering duration in second flush, and CD+EF – full flowering duration

Figure 2.
Average annual air temperature values in Krakow in the years 1981–2019 and average ± SE annual air temperature (black line) and precipitation (grey bars) values in Krakow during the study period (2012–2019)

Figure 3.
Classification of months according to temperature and precipitation in Krakow in the years 2012–2019
Table 1.
Average total flowering duration (as dependent variable) and full flowering duration of cultivar roses and the results of Spearman correlation with meteorological parameters from 2012–2019
| Cultivar roses | Total flowering duration [days] | Full flowering duration [days] | Full flowering duration as a percentage of total flowering duration [%] | Spearman correlations | |
|---|---|---|---|---|---|
| Average temperature [°C] | Precipitation [mm] | ||||
| ‘Abracadabra’ | 96.1 | 34.1 | 35.5 | 0.28* | −0.01 |
| ‘Clair Matin’ | 97.6 | 31.0 | 31.8 | 0.32* | −0.05 |
| ‘Compassion’ | 93.9 | 37.8 | 40.3 | 0.39* | 0.00 |
| ‘Dirigent’ | 92.9 | 33.6 | 36.2 | 0.42* | 0.04 |
| ‘Eden Rose’ | 105.0 | 53.3 | 50.8 | 0.36* | 0.00 |
| ‘Fisherman’s Friend’ | 78.0 | 21.0 | 26.9 | 0.50* | 0.01 |
| ‘Fred Loads‘ | 96.0 | 41.9 | 43.6 | 0.45* | 0.03 |
| ‘Graham Thomas’ | 95.9 | 25.9 | 27.0 | 0.31* | 0.02 |
| ‘Händel’ | 77.3 | 21.3 | 27.6 | 0.40* | 0.05 |
| ‘Heritage’ | 88.6 | 29.0 | 32.7 | 0.42* | 0.04 |
| ‘Ilse Haberland’ | 104.6 | 43.8 | 41.9 | 0.34* | 0.00 |
| ‘Lichtkönigin Lucia’ | 96.6 | 31.3 | 32.4 | 0.34* | −0.07 |
| ‘Märchenland‘ | 74.6 | 28.1 | 37.7 | 0.38* | −0.03 |
| ‘Morgengrüss’ | 69.4 | 23.0 | 33.1 | 0.41* | −0.05 |
| ‘Mutabilis’ | 102.5 | 36.3 | 35.4 | 0.38* | −0.01 |
| ‘My Choice’ | 93.8 | 21.4 | 22.8 | 0.38* | −0.03 |
| ‘Old Master’ syn. ‘Rozentanz’ | 100.1 | 34.6 | 34.6 | 0.38* | −0.04 |
| ‘Peach Blossom’ | 91.8 | 30.3 | 33.0 | 0.39* | 0.00 |
| ‘Pink Robusta’ | 57.5 | 10.3 | 17.9 | 0.40* | 0.00 |
| ‘Robusta’ | 109.5 | 34.5 | 31.5 | 0.44* | 0.02 |
| ‘Rokoko’ | 102.4 | 36.0 | 35.2 | 0.27* | −0.05 |
| ‘Romance’ | 102.5 | 46.4 | 45.3 | 0.37* | 0.06 |
| ‘Rosarium Uetersen’ | 100.9 | 41.5 | 41.1 | 0.33* | 0.03 |
| ‘Santana’ | 81.4 | 20.6 | 25.3 | 0.34* | −0.01 |
| ‘Schneewittchen’ syn. ‘Iceberg’ | 114.5 | 48.9 | 42.7 | 0.39* | −0.01 |
| ‘Shalom‘ | 81.1 | 28.3 | 34.9 | 0.48* | 0.00 |
| ‘Smooth Prince’ | 100.4 | 37.3 | 37.2 | 0.42* | 0.05 |
| ‘Swan Lake’ | 89.4 | 32.0 | 35.8 | 0.43* | −0.01 |
| ‘Tradition’ | 98.3 | 34.1 | 34.7 | 0.44* | −0.08 |
| ‘Ulmer Münster’ | 99.3 | 50.3 | 50.7 | 0.22* | −0.05 |
| ‘Veilchenblau’ | 31.1 | 20.6 | 66.2 | 0.25* | −0.09 |
| ‘Warwick Castle’ | 84.9 | 27.6 | 32.5 | 0.35* | −0.01 |
| ‘Westerland’ | 79.6 | 25.4 | 31.9 | 0.39* | −0.09 |
| ‘White Cockade’ | 81.0 | 30.4 | 37.5 | 0.45* | 0.07 |
| ‘Wilhelm Hansmann’ syn. ‘Skyrocket’ | 99.4 | 43.4 | 43.7 | 0.35* | −0.06 |
| ‘William Shakespeare’ | 95.9 | 40.9 | 42.6 | 0.35* | 0.01 |
| ‘Zephirine Drouhin’ | 80.5 | 16.3 | 20.2 | 0.40* | −0.05 |

Figure 4.
Distribution of mean ± SE flowering durations of 37 rose cultivars during the growing season classified in SIMPER analysis based on an eight years: a – cultivars with dominant FS10, b – cultivars with dominant FS25, c – cultivars with dominant FS50, d – cultivars with dominant FS75, and e – cultivars with dominant FS100
Table 2.
SIMPER analysis of differences in rose cultivars (contributing more than 1%) according to five flowering stages (average dissimilarity 73.04%)
| Cultivar | Flowering stages | Av. Diss. | Contrib. (%) | Cum. (%) | ||||
|---|---|---|---|---|---|---|---|---|
| FS10 | FS25 | FS50 | FS75 | FS100 | ||||
| ‘Ulmer Münster’ | 1.30 | 1.42 | 1.38 | 1.21 | 1.57 | 3.17 | 4.34 | 4.34 |
| ‘Rosarium Uetersen’ | 1.62 | 1.93 | 1.24 | 0.88 | 1.36 | 2.55 | 3.49 | 7.83 |
| ‘Schneewittchen’ syn. ‘Iceberg’ | 2.00 | 1.69 | 1.05 | 1.33 | 1.79 | 2.46 | 3.37 | 11.20 |
| ‘Eden Rose’ | 1.32 | 1.60 | 1.46 | 1.64 | 1.25 | 2.46 | 3.37 | 14.57 |
| ‘Robusta’ | 2.62 | 1.51 | 0.95 | 0.94 | 0.96 | 2.40 | 3.28 | 17.85 |
| ‘Ilse Haberland’ | 1.66 | 1.80 | 1.19 | 1.58 | 0.75 | 2.32 | 3.18 | 21.03 |
| ‘Romance’ | 1.36 | 1.16 | 1.16 | 2.00 | 1.32 | 2.24 | 3.07 | 24.10 |
| ‘Mutabilis’ | 2.30 | 1.49 | 0.92 | 0.91 | 1.21 | 2.24 | 3.06 | 27.16 |
| ‘Smooth Prince’ | 1.87 | 1.73 | 1.00 | 1.15 | 1.00 | 2.17 | 2.97 | 30.12 |
| ‘Wilhelm Hansmann’ syn. ‘Skyrocket’ | 1.81 | 1.49 | 1.16 | 1.12 | 1.32 | 2.16 | 2.95 | 33.08 |
| ‘William Shakespeare’ | 2.13 | 1.33 | 1.16 | 0.88 | 1.18 | 2.13 | 2.91 | 35.99 |
| ‘Fred Loads’ | 1.46 | 1.29 | 1.98 | 1.12 | 0.79 | 2.08 | 2.84 | 38.83 |
| ‘Old Master’ syn. ‘Rozentanz’ | 1.98 | 1.78 | 0.76 | 0.79 | 1.46 | 2.06 | 2.82 | 41.65 |
| ‘Swan Lake’ | 1.74 | 1.73 | 1.08 | 0.82 | 0.75 | 2.05 | 2.81 | 44.45 |
| ‘Abracadabra’ | 1.87 | 1.78 | 0.97 | 0.85 | 1.00 | 2.04 | 2.80 | 47.25 |
| ‘Rokoko’ | 2.30 | 1.53 | 1.05 | 1.18 | 0.71 | 2.02 | 2.76 | 50.02 |
| ‘Lichtkönigin Lucia’ | 2.32 | 1.56 | 0.92 | 0.88 | 0.82 | 2.01 | 2.76 | 52.77 |
| ‘Tradition’ | 2.28 | 1.40 | 0.89 | 0.76 | 1.25 | 2.01 | 2.75 | 55.52 |
| ‘Clair Matin’ | 1.85 | 1.69 | 0.89 | 0.73 | 1.00 | 2.00 | 2.74 | 58.27 |
| ‘Graham Thomas’ | 1.72 | 2.29 | 0.60 | 0.79 | 0.86 | 2.00 | 2.74 | 61.01 |
| ‘Warwick Castle’ | 2.15 | 1.20 | 0.78 | 0.73 | 0.86 | 2.00 | 2.74 | 63.75 |
| ‘Compassion’ | 1.91 | 1.36 | 0.95 | 1.15 | 0.93 | 1.99 | 2.72 | 66.47 |
| ‘Dirigent’ | 2.30 | 1.04 | 0.57 | 0.82 | 1.54 | 1.91 | 2.62 | 69.09 |
| ‘Heritage’ | 1.91 | 1.69 | 1.19 | 0.76 | 0.43 | 1.90 | 2.60 | 71.69 |
| ‘My Choice’ | 2.77 | 1.42 | 0.70 | 0.67 | 0.39 | 1.86 | 2.55 | 74.24 |
| ‘Peach Blossom’ | 2.17 | 1.29 | 0.78 | 0.70 | 1.07 | 1.79 | 2.45 | 76.69 |
| ‘Zephirine Drouhin’ | 2.62 | 0.98 | 0.35 | 0.42 | 0.64 | 1.74 | 2.39 | 79.07 |
| ‘Shalom’ | 1.47 | 1.53 | 0.97 | 0.91 | 0.46 | 1.73 | 2.37 | 81.44 |
| ‘Fisherman’s Friend’ | 2.11 | 1.22 | 0.57 | 0.70 | 0.50 | 1.71 | 2.33 | 83.78 |
| ‘White Cockade’ | 1.96 | 0.89 | 0.68 | 1.06 | 0.82 | 1.69 | 2.31 | 86.09 |
| ‘Märchenland’ | 1.49 | 1.18 | 0.70 | 0.88 | 0.79 | 1.68 | 2.30 | 88.39 |
| ‘Santana’ | 2.43 | 1.02 | 0.49 | 0.46 | 0.75 | 1.64 | 2.25 | 90.63 |
| ‘Westerland’ | 1.79 | 1.11 | 0.65 | 0.70 | 0.82 | 1.58 | 2.16 | 92.79 |
| ‘Morgengrüss’ | 1.49 | 1.18 | 0.49 | 0.64 | 0.86 | 1.56 | 2.13 | 94.92 |
| ‘Händel’ | 2.13 | 1.16 | 0.46 | 0.79 | 0.50 | 1.51 | 2.06 | 96.99 |
| ‘Pink Robusta’ | 1.68 | 1.02 | 0.43 | 0.33 | 0.04 | 1.36 | 1.86 | 98.85 |
| ‘Veilchenblau’ | 0.32 | 0.29 | 0.38 | 0.42 | 1.04 | 0.84 | 1.15 | 100.00 |

Figure 5.
Mean ± SE duration of rose FSs: FS10, FS25, FS50, FS75, and FS100 based on eight years of observation W – Wald’s statistics; p – significance level
Table 3.
Spearman correlation coefficients between all of the analyzed rose flowering stages and meteorological parameters (average temperature and precipitation)
| Rose flowering stage | Average temperature [°C] | Precipitation [mm] | ||
|---|---|---|---|---|
| Spearman correlation coefficient | p-values | Spearman correlation coefficient | p-values | |
| FS10 | 0.31 | 0.003 | −0.02 | 0.497 |
| FS25 | −0.36 | 0.002 | −0.18 | 0.001 |
| FS50 | −0.57 | 0.0001 | −0.11 | <0.0001 |
| FS75 | −0.56 | 0.0002 | −0.13 | <0.0001 |
| FS100 | −0.14 | 0.083 | −0.16 | <0.0001 |