Forage & Range Research Laboratory Logan, UT. Review Progress in … Bluebunch wheatgrass Snake...
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Transcript of Forage & Range Research Laboratory Logan, UT. Review Progress in … Bluebunch wheatgrass Snake...
Forage & Range Research Laboratory
Logan, UT
Review Progress in …
Bluebunch wheatgrass
Snake River wheatgrass
Indian ricegrass
Squirreltail
Basin wildrye
Bluebunch wheatgrass
Releases
GoldarWhitmar
Anatone
P-7 (MOPX)
P-7
bluebunch wheatgrass germplasm
G-2 seed field
IFAFS Trials
two sites each in UT, NV, ID, OR
with and without Roundup
(total of 16 comparisons)
measurement:
seedling density in late June/early July of
establishment year
Anatone 1.67 a 0.55 a
P-7 1.01 b 0.48 a
Goldar 0.23 c 0.16 a
with without
Roundup Roundup
Current Seed Prices
bluebunch wheatgrass
Anatone
$5.00 per PLS #
P-7
$2.00 per PLS #
Anticipated Releases
2005
Columbia
Bluebunch Wheatgrass
Anticipated Release
2006
Large-seeded
bluebunch wheatgrass(from chromsome doubling)
seeds 51% heavier than P-7
P-7 P-27
selection for regrowth from clipping
P-5
Bluebunch Wheatgrass
Snake River wheatgrass
Releases
‘Secar’Expedition
Anticipated Releases
2005
Expedition
Snake River Wheatgrass
Anticipated Release
2006
Anticipated Releases
2005
Expedition
Snake River Wheatgrass
two locations:
Blue Creek, Box Elder County, UT Green Canyon, Cache County, UT
better seedling establishment through drought compared to ‘Secar’
year 2 stand frequency of 49% compared to 27% for Secar
years 2-4 forage yield 97% greater than Secar
Anticipated Releases
2005
Expedition
Snake River Wheatgrass
Greenhouse seedling drought-tolerance study
in response to drought stress …
shoot biomass of Expedition declined 24%
shoot biomass of Secar declined 33%
in response to drought stress …
root-to-shoot ratio of Expedition increased 33%
root-to-shoot ratio of Secar increased 7%
Indian ricegrass
Releases
Star Lake
‘Nezpar’
‘Rimrock’
‘Paloma’
White River
Seed Mass
8.62 mg 3.37 mg 2.33 mg
Lemma Thickness
180 µm 93 µm 52 µm
Germination
negligible 20% 66%
Jumbo Globose Elongate(Star Lake)
Anticipated Release
2005
NRCS Trial at Pinedale, WY
White River Germplasm Indian ricegrass
highly germinable material for the Upper Colorado/Green
River Plateau
Anticipated Release
2005
highest seed yield of 25 accessions
second highest germination of 59 accessions
Anticipated Release
2005
White River Germplasm Indian ricegrass
stand superior to Nezpar (4 of 6 years) and Rimrock (3 of 6 years)
NRCS Trial at Pinedale, WY
vigor superior to Nezpar (3 of 6 years) and Rimrock (2 of 6 years)
vigor inferior to Nezpar and Rimrock (1 of 6 years)
biomass superior to Nezpar and Rimrock (1 of 3 years)
Sand Hollow(multisetus)
Toe Jam Creek(californicus)
Fish Creek(elymoides)
Squirreltail Releases
Tusas(brevifolius)
Sand Hollow Germplasm
big squirreltail
(Elymus multisetus)
Toe Jam Creek (E. elymoides
ssp. californicus)
Fish Creek (E. elymoides ssp. elymoides)
Bottlebrush Squirreltail germplasms
Fish Creek
Toe Jam Creek
(E. elymoides ssp. elymoides)
(E. elymoides ssp. californicus)
Fish Creek
Toe Jam Creek
(E. elymoides ssp. elymoides)
(E. elymoides ssp. californicus)
E. elymoides ssp. elymoides
Mountain Home
Fish Creek
Washoe Germplasm
Basin wildrye Releases
‘Trailhead’
‘Magnar’
Anticipated Releases
2005
Continental
Basin Wildrye
Magnar (2n=56)
X
L-28 (2n=56)
Trailhead (2n=56)
Trailhead (2n=28)
colchicine-doubling
continued cycles of selection
ContinentalLarge-seeded basin wildrye
under development
seeds 34% heavier than Acc:636
Acc:636 L-45
Anticipated Releases
2004