Texas, USA 2010 - International Herbage Seed Group

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CentralNorth EastCentral EastTable 1. Endophyte presence and average ergovaline contents in grass ecotypes collected in PolandCountryregionGenus, speciesEcotypescollectedFrequency (%) ofecotypes with:endophyteendoph.+ergovalineErgovaline contents (ppm):meanrange (min. -max.)Desch. cespitosa 68 4.4 0.0 - -F. arundiancea 12 8.3 8.3 1.298 1,298F.pratensis 69 81.2 49.3 0.069 0,005 - 0,749F.rubra 102 11.8 7.8 0.144 0,026 - 0,545Lolium perenne 76 23.7 15.8 0.023 0,011 - 0,080Average for region 25.9 16.2 0.383F.ovina 11 27.3 9.1 0.076 0,076F.pratensis 29 75.9 58.6 0.289 0,044 - 1,545L. multiflorum 1 1.0 0.0 - -F.rubra 25 40.0 8.0 0.028 0,016 - 0,040L. perenne 31 25.8 22.6 0.121 0,065 - 0,192Average for region 34.0 19.7 0.129F. arundiancea 19 47.4 47.4 1.924 1,213 - 2,630F.ovina 1 100.0 0.0 - -F.gigantea 2 100.0 50.0 0.112 0,112F.pratensis 32 75.0 59.4 0.097 0,024 - 0,433F.rubra 45 20.0 13.3 0.042 0,050 - 0,089L. perenne 39 17.9 15.4 0.595 0,162 - 1,706Poa pratensis 56 0.0 0.0 - -Average for region 51.5 26.5 0.554Average for all ecotypes 38.5 21.4 0.37235
ReferencesBony, S. & Delatour, P. (2000). Revelance and impact of grass endophyte toxins in Europe.Proccedings of the 4th <strong>International</strong> Neotyphodium/Grass Interaction Symposium. 207-218.Craig, A. M., Bilich, D., Hovermale J. T. & Welty, R. E. (1994). Improved extraction andHPLC methods for ergovaline from plant material and rumen fluid. Journ. of Vet.Diagn. Invest. 6: 348-352.Funk, C.R., Belanger, F.C. & Murphy, J.A. (1994). Role of endophytes in grasses used forturf and soil conservation. In: Biotechnology of endophytic fungi of grasses. BaconCh.W., White J.F.Jr. (eds). CRC Press., Boca Raton: 201-209.Hovermale, J. T. & Craig, A. M. (2001). Correlation of ergovaline and lolitrem B levels inendophyte-infected perennial ryegrass (Lolium perenne). Journ. Vet Diagn Invest 13:323-327.Lewis, G.C. (2000). Neotyphodium endophytes: incidence, diversity, and host in Europe.Proc. of the 4th <strong>International</strong> Neotyphodium/ Grass Interaction Symposium. Soest,Germany: 123-130.Pańka, D. & Żurek G. (2005). Występowanie grzybów endofitycznych w trawachgazonowych a ich podatność na stres suszy. Łąkarstwo w Polsce, 8, 45-54.Petroni, O. (1986). Taxonomy of endophytic fungi of aerial plant tissues. Microbiology ofPhyllosphere. Cambridge. Cambridge University Press: 175-187.Pfannmöller, M., Eggestein, S. & Schöberlein, W. (1994). Endophytes in European varietiesof Festuca species. IOBC wprs Bulletin 17/1: 101-109.Prończuk, S. &, Prończuk, M. (2000). Nasiennictwo traw dla rekultywacji terenów trudnych.Łąkarstwo w Polsce 3: 129-139.Reed, K.M., Walsh, J.R., McFarlanne, N.M. & Cross, P.A. (2000). Australian perennialryegrass pasture, endophyte frequency and associated alkaloid concentrations. Proc. of236
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Proceedings of the 7th Internationa
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Table of ContentsORAL PRESENTATIONS
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Seed yield components and yield per
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International Herbage Seed Conferen
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16:15 - 16:30 Reliability of salini
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Hotel expense is covered for night
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40,000 were slaves (McDonald, 2007)
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Fig. 1. Texas AgriLife Research and
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$7 billion for cattle, $3 billion f
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principle and encourages both AgriL
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eceived by growers, the above perce
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seed conditioning plants are locate
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Table 4.Hectares of open-field burn
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system, a seed crop is produced fro
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Fig. 1. Land resource areas of Texa
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y land owners. Seed yields are low
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The influence of planting density o
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Simple correlation and regression a
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Variation in seed shattering in a g
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Seed retention (SR) was calculated
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mm160120Precipitation8040020Km h -1
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Young, B. A. (1986). A Source of Re
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Several methods are commonly used f
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Table 3. Effect of the length of ha
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Alfalfa seed production in semi-hum
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Rather near the meteorological stat
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ReferencesBolaños-Aguilar E.D., Hu
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ased bioenergy conversion plants wa
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Table 1. Average distances required
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Figure 1. Optimized locations for 1
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Perennial ryegrass (Lolium perenne
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Relative Seed Yieldsingle composite
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Flowers, M.D.; Hart, J.M.; Young II
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Thus, similar to tissue tests, remo
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Conclusion:Perhaps our most importa
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Modelling critical NDVI curves in p
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The five spectral reflectance measu
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Harvest loss in ryegrass seed crops
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Larger than expected harvest losses
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Rolston, P.; Trethewey, J.; McCloy,
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Optical sensors have the potential
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Figure 2. Seed yield response to ap
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Flowers, M. D., Hart, J.M., Young I
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In 2010, France has launched the fo
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Yield (% maximum)ConclusionThe resu
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Plant N uptakeN unavailableSoil nit
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Stresses associated with germinatio
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correspond to electrical conductivi
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applied later in the fall was more
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Figure 2. Establishment of five ove
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The seed vigour testing was perform
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Table 1. Germination index (GI) for
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Reliability of salinity screening L
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AcknowledgmentThis research was sup
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Table 2. Greenhouse salinity screen
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The seeds were collected from the A
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increases germination to its potent
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Light, lodging and flag leaves-what
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Relative seed yieldSeed yield (kg/h
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Hampton, J.G.; Clemence, T.G.A.; He
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The seed set is of major importance
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In grass species with poor seed ret
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support system to optimize fungicid
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weather stations in grass seed fiel
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ust resistance loci in Lolium peren
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Seed yield variation in a red clove
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100Seed yield plant -1 (g)806040200
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Marden, J. H. 1984. Remote percepti
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Crimson clover seed production in t
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Piper, C.V. 1935. Forage plants and
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deal of investigation into the caus
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genes and subsequent ability to pro
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Gatenby, W.A., S.C. Munday-Finch, A
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Control of Vulpia myuros in red fes
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The strip design provides an opport
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The pot experiments did not reveale
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CharacterWeed abundance1 A few plan
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Jensen, P. K. (2010) Longevity of s
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Effects of intraspecific competitio
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flowering, Gangi accumulated a high
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The seed yield of Gangi was, on ave
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Seed yield components and yield per
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ResultsVariation among populations
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Table 2. Means of total seeds per p
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Ryle, G. J. (1970). Partition of As
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Control of Apion trifolii in red cl
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Number of seeds /inflorescencesimil
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population. However, in spite of th
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Corvallis where they were debearded
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Table 1. Effect of Palisade growth
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Variations on potential and harvest
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Determination of optimum desiccatio
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Relative seed yield (%)Flowers/m225
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Harvesting too soon after peak flow
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Annual ryegrass seed production in
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seed yield, kg/haExtractable Al, mg
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ReferencesHaby, V.A. (1995). Soil m
Page 195 and 196: Kentucky bluegrass (Poa pratensis L
Page 197 and 198: urn residue management (Fig. 1 and
Page 199 and 200: Comparing herbicide selectivity in
Page 201 and 202: Development of new tetraploid Chlor
Page 203 and 204: Following 4 (or 5) cycles of select
Page 205 and 206: Loch, D.S., Rethman, N.F.G. & van N
Page 207 and 208: KBGcocksfootHykorLofatimothymeadowf
Page 209 and 210: Figure 2 Relative seed yield (%) se
Page 211 and 212: and GA 4 . In consequence this inac
Page 213 and 214: Table 1 The effect of trinexapac-et
Page 215 and 216: Silberstein, T.B., Young, W.C. III,
Page 217 and 218: inflorescece number and seed yield
Page 219 and 220: Germination of Lolium multiflorum g
Page 221 and 222: Effect of sowing density on seed yi
Page 223 and 224: y-products of this grass seed crop
Page 225 and 226: Table 2. Effect of PGR on seed yiel
Page 227 and 228: Further culm length measurements ga
Page 229 and 230: chlorophyllometer. Measurements wer
Page 231 and 232: Table 2. Photosynthesis rate of fla
Page 233 and 234: Organization of grass seed research
Page 235 and 236: Path Coefficient and Ridge Regressi
Page 237 and 238: through y4 (0.133). Increasing y 1
Page 239 and 240: Newell G.J., Lee B. (1981)Ridge reg
Page 241 and 242: Relative humidity, seed moisture co
Page 243 and 244: Ergovaline contents in grasses from
Page 245: 11.8 % (Central East) to 40.0% (Nor
Page 249 and 250: Long-term Evaluation of Annual Ryeg
Page 251 and 252: seed yield. All systems of establis
Page 253 and 254: Preliminary results after four year
Page 255 and 256: Casals, Marie-LaureFNAMSImpasse du
Page 257 and 258: Mao, PeishengForage Seed LabChina A
Page 259 and 260: Vanasche, DavidVanasche Farm36130 N
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