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PORT-ORFORD-CEDAR (POC) – Phytophthora lateralis Resistance Trials at South Slough National Estuarine Research Reserve (SSNERR). DRAFT 9/5/2012 REPORT 26 June 2012 Site Visit & 18 July 2012 Site Assessment Sunny Lucas, Jen Christie, Richard Sniezko (Photos: R.Sniezko & S.Lucas )
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PORT-ORFORD-CEDAR (POC) – Phytophthora lateralis ResistanceTrials atSouth Slough National Estuarine Research Reserve (SSNERR) DRAFT 9/5/2012 REPORT 26 June 2012 Site Visit & 18 July 2012 Site Assessment Sunny Lucas, Jen Christie, Richard Sniezko (Photos: R.Sniezko & S.Lucas) Contacts: rsniezko@fs.fed.us & slucas02@fs.fed.us
Field Trials at SSNERR • 2011a planting: 1 Demo (along 10 minute trail, near visitor area, 29 trees) • 2011b planting: Main trial (187 trees, 11 families) – divided into two areas along Hinch Road • 2012 planting: Largest main trial, adjacent to Reps A & B of 2011b main trial planting (15 families; 711 trees) in RCB design with 4 blocks • BACKGROUND • Trials located beneath canopy of larger dead & living POC • Planted by Americorps with SSNERR oversight • 2012 Assessment of Dead/Alive completed 7/18/12
Objectives • Examine genetic resistance to Phytophthora lateralis in Port-Orford-cedar (POC) in long-term field trials in areas previously affected by P. lateralis • Use as restoration trial of POC for SSNERR – include some seedling families from different breeding zones • Use as public education tool – especially the demo planted along 10 Minute Trial
Background • Seedlings planted are from a variety of seedling families of POC – • Open-pollinated families (maternal parent known (Access F), mixture of pollen parents) • Full-sib families from control crosses (both maternal (Access F) and paternal parent (Access M) known; and may include self-pollinated families) • Resistance of some families have been determined from various tests, including a greenhouse ‘root dip’ test. Other families planted are still in testing.
2012 Update • The 2011 and 2012 trials seem well established, under a canopy of predominantly POC and Sitka spruce. • At this stage, they appear to be some of the ‘better’ POC field trials, due to the sites available and the effort that went into establishment • Great potential for involvement of students, citizen scientists, along with SSNERR & DGRC personnel
SSNERR Contacts 2012 • Mike Graybill (not present during visit) • Craig Cornu (pictured left) Tom Gaskill – Education Coordinator Craig Cornu – Coordinator of Monitoring Programs (planted POC seedlings in understory of POC and spruce)
Great having a sign, but a few errors on the sign that Pete Angwin and I noticed during the 2011 POC Tech meeting fieldtrip: 1) ‘not a FUNGUS’. Really a water mold.Water mold (oomycete) that superficially resembles a fungus, but is more closely related to the brown algae 2) Protection from rodents? More of protection fromdeer. 3) Probably introduced from Asia (not Europe) into nursery in Seattle, around 1923, then into native POC in mid-1950’s
10 Minute Trail Demo (2011) • A few seedlings dead by June 2012, including one dying 117490 OP. Path
10 Minute Trail – SSNERR 2012 8251 & 8254.jpg Dead seedling from Sow#93 Living seedling
10 Minute Trial: Dying seedling in resistant 117490 OP family (Sow#90) 8256 & 8257.jpg
SSNERR staff (Tom Gaskill, Don Smith, and _____), DGRC: Sunny & Jen(from DGRC 8255 & 8258.jpg)
Part of 2011 10 Minute Trail planting – in 2012 SSNERR 8264.jpg
SSNERR 2011b planting *will be updated from greenhouse trials
SSNERR 2011 planting Corners of blocks A & B are marked with red/black flagging to help distinguish this planting from the adjacent 2012 planting. Dead and live POC are interspersed through and surround planting. Blocks C & D are planted in a separate area (above and left).
POC overstory (many dead) in area of 2011 POC resistance trial
2011b POC Trial (further up Hinch Road) – several seedlings of 117499 OP have died in this part of the planting (8284.jpg)
SSNERR 2011b planting A few seedlings exhibited this top-down necrosis. Stem did not look girdled. Samples were taken from margin of discoloration for PCR.
Sow Year 2011 seedlings planted in 2012 Trial at SSNERR – Hinch road area 8267 & 8268.jpg Corners of blocks are marked with wooden signs.
POC seedling in 2012 trial – note dead foliage in lower crown 8265.jpg This symptom was very common in the 2012 planting. Especially in three families: 117499xOP (Sow #2), 117500x117341 (Sow #7), and SIS-41427xCOS-30881 (Sow# 15). Personally, I think most of these will grow out of it. This area is shady and damp. I think that may have something to do with the dead foliage (SL).
2012 POC Trial at SSNERR (many of the larger POC are dead from P. lateralis
Tag on one of the original field selections from SSNERR (Tree 7)? (We’re not sure if these are actually selections for our program, or if they were numbered for another project. I need to contact Katy Mallams and see if she knows anything about this. )
Still need to • Add directions to file • Add GPS coordinates to file • Contact Katy Mallams regarding metal-tagged trees • Try to find original selections using GPS coordinates and road logs
Summary • Trials well established • Brush is currently not a problem in trials • Some P. lateralis mortality present, but at low level through July 2012 • Due to retirements of some FS & BLM personnel --The location of the original candidate trees (tested for P. lateralis resistance) is uncertain – and/or the numbering on some of the large trees in the seedling trials is coded (temporary numbers) – this will need to be sorted out on FS end.
Possible Future Activities • SSNERR personnel (and possibly students, etc) to keep an eye on trials to note any significant mortality events. • DGRC & SSNERR personnel to stay in contact regarding the trials, possible education experiences for schools (such as students collecting data - doing measurements) – baseline height data might be good to have to gauge future growth against • Trials may need periodic retagging and/or brushing • DGRC to update SSNERR on results of trials and POC resistance information • Further discussions of other restoration and/or trial opportunities. • Other?