| Paluu dokumenttiluetteloon / Back to the catalogue of various documents on rhododendrons |
Kristian Theqvist, Finland, 5b
Based on the ARS Seed Exchange Pollen-to-Seed Program I ordered pollen from RSF and formed a small hybridizer team here in Finland. The two other hybridizers in addition to me were Osmo Jussila from Naantali and Jaakko Saarinen from Arboretum Mustila. To optimize the amount of seed we made R. brachycarpum ssp. tigerstedtii crosses with two separate plants, one at Naantali and another at Arboretum Mustila. The seed batches were merged before sending to ARS.
The main aim is to to get hardy big-leaf hybrids by using use the super hardy R. brachycarpum ssp. tigerstedtii and hardy proven Finnish hybrids as seed parent and pollen from big-leaf Rhododendron species. In addition there are side goals for yellow flowers, late flowering and good indumentum.
cp = Controlled Pollination
N |
Cross | Hybridizer |
1 |
brachycarpum ssp. tigerstedtii x arizelum RSF 1965/335, cp | Osmo Jussila, Jaakko Saarinen |
2 |
brachycarpum ssp. tigerstedtii x grande RSF 1971/338, cp | Osmo Jussila, Jaakko Saarinen |
3 |
brachycarpum ssp. tigerstedtii x habrotrichum RSF 1983/052, cp | Osmo Jussila, Jaakko Saarinen |
4 |
brachycarpum ssp. tigerstedtii x kesangiae RSF 1991/071, cp | Osmo Jussila, Jaakko Saarinen |
5 |
brachycarpum ssp. tigerstedtii x lacteum RSF 1975/125, cp | Osmo Jussila, Jaakko Saarinen |
6 |
brachycarpum ssp. tigerstedtii x magnificum RSF 1981/080, cp | Osmo Jussila, Jaakko Saarinen |
7 |
brachycarpum ssp. tigerstedtii x rotschildii RSF 1975/182, cp | Osmo Jussila, Jaakko Saarinen |
8 |
brachycarpum ssp. tigerstedtii x sinofalconeri RSF 2000/151, cp | Osmo Jussila, Jaakko Saarinen |
9 |
smirnowii x auriculatum RSF 1967/698, cp | Osmo Jussila |
10 |
'Helsinki University' x grande RSF 1971/338, cp | Kristian Theqvist |
11 |
'Helsinki University' x magnificum RSF 1981/080, cp | Kristian Theqvist |
12 |
'P.M.A. Tigerstedt' x arizelum RSF 1965/335 or sinofalconeri RSF 2000/151, cp, batch 1, mixup in pollination or marking | Kristian Theqvist |
13 |
'P.M.A. Tigerstedt' x arizelum RSF 1965/335 or sinofalconeri RSF 2000/151, cp, batch 2, mixup in pollination or marking | Kristian Theqvist |
14 |
'P.M.A. Tigerstedt' x auriculatum RSF 1967/698, cp | Kristian Theqvist |
15 |
'P.M.A. Tigerstedt' x lacteum RSF 1975/125, cp | Kristian Theqvist |
16 |
'P.M.A. Tigerstedt' x magnificum RSF 1981/080, cp | Kristian Theqvist |
17 |
'P.M.A. Tigerstedt' x rotschildii RSF 1975/182, cp | Kristian Theqvist |
18 |
'Pekka' x arizelum RSF 1965/335, cp | Kristian Theqvist |
19 |
'Pekka' x grande RSF 1971/338, cp | Kristian Theqvist |
20 |
'Pekka' x kesangiae RSF 1991/071, cp | Kristian Theqvist |
21 |
'Pekka' x rotschildii RSF 1975/182, cp | Kristian Theqvist |
22 |
'St. Michel' x kesangiae RSF 1991/071, cp | Kristian Theqvist |
23 |
'St. Michel' x magnificum RSF 1981/080, cp | Kristian Theqvist |
24 |
'St. Michel' x rotschildii RSF 1975/182, cp | Kristian Theqvist |
25 |
brachycarpum ssp. tigerstedtii, cp. Controlled pollination at Arboretum Mustila between several original plants Dr. C. G. Tigerstedt grew from seed collected in 1930 in North Korea, Mt. Pungsan, 1200 m altitude. Please note that this is the "real thing" described by Nitzelius as ssp. tigerstedtii, whereas some of the "spp./var./Group tigerstedtii" around the world appears to have questionable smirnowii-type features. These often very hardy hybrids probably descend from seed open-pollinated by hardy Seidel smirnowii hybrids at Arboretum Mustila. |
Jaakko Saarinen |
Links:
Arboretum Mustila
The Finnish Rhododendron Club
Breeding Hardy Rhododendrons in Finland
Rhododendron Garden in Archipelago Forest
