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Activities for the Improvement of Forest Reproductive Material of Douglas-fir in North-West Germany Hans-Martin Rau Nordwestdeutsche Forstliche Versuchsanstalt,

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Presentation on theme: "Activities for the Improvement of Forest Reproductive Material of Douglas-fir in North-West Germany Hans-Martin Rau Nordwestdeutsche Forstliche Versuchsanstalt,"— Presentation transcript:

1 Activities for the Improvement of Forest Reproductive Material of Douglas-fir in North-West Germany Hans-Martin Rau Nordwestdeutsche Forstliche Versuchsanstalt, Hann. Münden

2 Content Comparative tests with progenies from the origin and man made stands Typical results Establisment of seed orchards Establishment of future seed collection stands Investigation of stands in respect to phenotypical or genotypical characters Silvicultural consequences Status and objectives

3 1. National provenance trials – 43 sites in Germany – in North-West Germany 29 sites – 37 provenances – plot size m² – without replications provenance trial from 1956

4 IUFRO sown 1970 and sites in Germany, 17 in NW-Germany origins present on 1 up to 22 sites - plot size 64 up to 296 m² - 3 replications EUDIREC (B, D, E, F,GB) - in Germany 1 site only - 3 provenances, 5 stands, 8 seed orchards - plot size 144 m² - 3 replications 2. International provenance trials

5 32 trials established between 1969 and 1995 Material often a mixture of… - provenances from the natural range (408) - German stands (161) - German seed orchards (6) - single tree progenies (ca. 600) - controlled pollinations (53) - clones (351) Volume / ha (percent of standard mean) at age Other trials in NW-Germany

6 IUFRO Douglas-fir provenance experiment 1970 assessment at age 27 volume per ha in % of special mean BC-NBC-NEShusw. Lake W-EBC coast Vanc. Isld. Olymp. Penins. Puget Sound West. Casc.W. East. Casc.W. South. Casc.W. Coast O. West. Casc.O. Cal n = number of progenies within each group

7 IUFRO Douglas-fir provenance experiment I assessment at age 27 straight trees in % of special mean BC-NBC-NEShusw. Lake W-EBC coast Vanc. Isld. Olymp. Penins. Puget Sound West. Casc.W. East. Casc.W. South. Casc.W. Coast O. West. Casc.O. Cal n = number of progenies within each group

8 OK A IUFRO Douglas-fir provenance experiment I Trees with problematic bark (rough, soft, easy to remove) > 5 % of the trees problematic < 5 % of the trees problematic Surface of bark: rough

9 Testing German stands Results at age 15 (dark columns stands approved as tested)

10 Seed orchards Types of orchards 7 grafting seed orchards 8 cutting seed orchards 1 combined seed orchard Number of clones 45 – 683 Sizes 1.5 – 12.6 ha Establishment Photo: ASP Teisendorf

11 Future seed collection stands former trials later on used as seed collection stands small plots bad progenies shall be removed before approval stands especially established for seed collection purposes 10 well tested provenances 20 sites isolated from other Douglas-fir stands > 2.0 ha

12 Investigation of stands by genetical means

13 Phenotypical investigation of stands Features Discolouration of needles or needlecast Heavy branchiness independent from spacing Stem crookedness Deeply fissured, soft and easily removable bark Resin flow without injuries High mortality

14 Silvicultural consequences Stands of problematic provenance should be reduced to a minimum The reqirements for a sustainable procurement with suitable seeds should be met Natural regeneration of maladapted stands should be stopped

15 CriteriaNW-FVAGerm. Fed. Republic active trials40? established since1960? no. of selected stands no. of tested stands1317 no. of qualified seed orchards 69 no. of tested seed orchards not approved seed orchards ?1? Current status concerning Douglas-fir

16 1990/9191/9292/9393/9494/9595/9696/9797/9898/9999/0000/0101/0202/0303/0404/0505/0606/0707/ Other regions / categories Regions of provenance: For selected category kg Amount of annually collected seeds Douglas-fir

17 Recommended breeding zones of DF Region of provenance Forest district / Dept. Significantly superior in……Breeding zone Nordostdeutsches Tiefland außer Schleswig Holstein LFA – FA Schildfeld 3051 a4 / a5growth BB, MV, SH, NI, SN, (< 400 m asl.) SN Mittel- und Ostdeutsches Tief- und Hügelland A mt f. Forstwirtsch. Templin, Stadtw. Lychen 6 a2 growthBB, ST, SN, (< 400 m asl. ) SN West- und Süddeutsches Hügel- und Bergland sowie Alpen, kolline Stufe FA Arnsberger Wald 323 Dgrowth BY, /05 NW v. Baumbach-Frielingen 21 CgrowthBW, BY, HE, NI, SH, ST FA Jossgrund 96 A u. 97 1growthBW, BY, HE, NI, SH, ST FA Jossgrund 1225 A 0growthBW, BY, HE, NI, SH, ST FA Melsungen 1467 A 0growth, straightnessBW, BY, HE, NI, SH, ST FA Michelstadt 17 13growth, fine branchesBW, BY, HE, NI, SH, ST FA Michelstadt Stadt Breuberg 21 Bgrowth, straightnessBW, BY, HE, NI, SH, ST FA Romrod 1005 A 2growthBW,BY, HE, NI, SH, ST FA Romrod 1080 B 2growthBW, BY, HE, NI, SH, ST FA Weilmünster Gemd. Weinbach 116 A 0growth, straightnessBW, BY, HE, NI, SH, ST FA Weilmünster Gemd. Weinbach 613 A 0growth, straightnessBW, BY, HE, NI, SH, ST FA Weilrod 1043 A 2growth, resistance to needle castBW, BY, HE, NI, SH, ST FA Hürtgenwald 819 BgrowthBW, BY, HE, NI, SH, ST

18 Regions of provenance Forest district / Dept. Significantly superior in……Breeding zone West- und SüddeutschesHügel- und Bergland sowie Alpen, montane Stufe FA Frankenberg 1128 B 0growthBW, HE, /05 BY,Bergland von NI und ST FA Königstein 2304 C 1growth, straightnessBW, HE, /05 BY,Bergland von NI und ST FA HochwaldgrowthBW, HE, /05 BY,Bergland von NI und ST Nordwestdeutsches Tiefland mit Schleswig-Holstein Seed orchard Humptulips NFA Harsefeld 42 b growth BB, HE, NI, SH, / 05 BY Südostdeutsches Hügel- und Bergland Intraspecific combination Tharandt I FoB Bärenfels, viridis x glauca (Tharandt Zucht-Nr. 23 x NLP, Lohmen Zucht-Nr. 84) growth, frost resistance SN, SN Intraspecific combination Tharandt IV FoB Bärenfels, viridis x glauca, (Tharandt Zucht-Nr. 24 x NLP, Lohmen Zucht-Nr. 84) growth, frost resistance SN, SN Recommended breeding zones of DF

19 Regions of provenances of DF Figure acc. to BLE (2006)

20 Conclusions Douglas-fir is one of the most intensively investigated tree species in respect to provenance research and progeny testing In addition many efforts are made to secure future seed procurement ( tested seed collection stands, seed orchards,…) More and more approved seed collection stands but also normal stands will be checked according to phenotypical and genotypical features Currently there is no interest in further selection processes


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