Friesia X, 4-5

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- 253 - resemble the measurements deseribed for S. avenae f. sp . tritioea, found by JOHNSON (1947) to attack barley lea ves. On barley seed the occurrence of S. nodorum has been reported by MACHACEK (1945) and NOBLE & RICHARDSON (1968) . At The Danish State Seed Testing Station pycnidia of S. nodorum were found in several seed lots in the years 1969-72 (JØRGENSEN 1973, pers. comm.) . This pap er deals with the widespread occurrence of Septoria nodo rum and its sexual stage L eptosphaeria nodorum on barley in Den mark, and the physiologic sp ecialization of the pathogen on ba rley and wheat . As t his apparently is the first time Septoria nodorum ha s been found associated with its sexual stage on barley, the name Lepto sphaeria nodorum will be used in the following. OC CURRENCE OF L E P T O S P H A E R I A NODORUM ON BARLEY IN DENMARK During the growing-seasons 1970-71 disease symptoms, apparently new t o Denmark, were frequently observed on barley leaves. The symptoms were always associated with L eptosphaeria nodorum. In 1972-73 the pathogen was isolated from the folIowing localities in Zealand and Jutland: Skalstrup, Snoldelev, Gadstrup, Ramsømagle, Allerslev (all in Zealand) , Jelling, Hornborg, Tvingstrup, Horsens, Langå and Randers (Jutland). At all of these localities the disease symptoms were widely occurring. The most serious attacks were found at Hornborg and Langå where 30-40 % of the barley plants were infected with a considerable loss of active leaf tissue as a conse quence. SYMPTOMS ON BARLEY The first disease symptoms appear in Mayas brown or greyish spots on the leaf lamina and leaf sheaths or at the junction between the lamina and sheath. Later in the season lesions appear as 1-2 cm long, oval or lens-shaped, redbrown spots often continuing in chloro tic tissue along the leafribs (Fig. 1) . More irregular or triangular formed lesions typically develop at the junction between the leaf lamina and sheath thereby affecting the entire leaf (Fig. 2) . Infected
- 254 - Fig. 1. Leptosphaeria nodorum. Barley leaves with lesions. Collected from the field on July 15th. Fig. 2. Leptosphaeria nodorum. Barley leaves with lesions. On the two upper leaves lesions occur at the junction between the leaf lamina and leaf sheath causing chlorosis of the entire leaf. Collected from the field on July 15th.
Page 1 and 2: FRIESIA NORDISK MYKOLOGISK TIDSSKRI
Page 3 and 4: FRIESlA, Bind X, hefte 4-5, 1974 PL
Page 5: - 210 - CONTENTS Page Introduetion
Page 8: - 213 - deseribed in this paper do
Page 11 and 12: - 216 - and nose, unitunieate, 120-
Page 13 and 14: - 218 - This species is the marine
Page 15 and 16: - 220 - and on shelIs and walls in
Page 17 and 18: 222 - 12. Crinigera sp. (C. maritim
Page 19 and 20: - 224 - 20-22.5 X 10-12 u , Ascospo
Page 21 and 22: - 226- undoubtedly also H. appendic
Page 23 and 24: - 228 - Paraphyses filiform. Ascosp
Page 25: - 230 - Perithecia up to 0.5 mm in
Page 28 and 29: - 233 - Rare. In old shipworm galle
Page 30 and 31: - 235 - TABLE 1. Number of collecti
Page 32 and 33: - 237 Fig. 11. Zone 1. Driftwood at
Page 34 and 35: - 239- Within eaeh zone the driftwo
Page 37 and 38: - 242- Dry driftwood also occurs at
Page 39 and 40: - 244 - of marine fungi, but other
Page 41 and 42: - 246- on the Helgoland coast found
Page 43 and 44: - 248- pelaqica, Remispora hamata,
Page 45 and 46: - 250 - Kohlmeyer. J.: Annotated ch
Page 47: - 252 - lings in pots. In the latte
Page 51 and 52: - 256 - Fig . 4. Leptosphaeria nodo
Page 54 and 55: - 259- Perithecia of L. nodorum hav
Page 56 and 57: - 261- plants remained healthy. The
Page 58 and 59: - 263- brown, 78-182 u . Pycnospore
Page 60 and 61: FRIESIA . Bind X . Hefte 4-5 . 1974
Page 62 and 63: - 267 - Figs. 1 to 4. Chaetomium de
Page 64 and 65: - 269 - ACKNOWLEDGEMENTS The author
Page 66: 271 Fig. 1. Position of the localit
Page 69 and 70: - 274 - usually suppcrted only a si
Page 71 and 72: - 276- Fig. 3. The western edge of
Page 73 and 74: - 278 - Fig. 4. The bur nt area at
Page 75: - 280 - that in the Arctic, the cha
Page 78: - 283 - Mlillheim TG, sudl. Station
Page 81 and 82: - 286 - Fig. 4. Pezizella jagi (JAA
Page 83 and 84: - 288 - noch bei JAAP etwas fiber d
Page 85 and 86: FRIESIA . Bin d X . Hefte 4-5 . 197
Page 88 and 89: - 293 - TABLE II. Growth and sporul
Page 90: - 295 TABLE III. Grow th and sporul
Page 93 and 94: - 298 - toxicity on the acid side i
Page 95 and 96: FRIESIA . Bind X . Hefte 4-5 . 1974
Page 97 and 98: - 302- distribution, occurrence in
Page 99 and 100:
- 304 - Fig. 2. The soil borer used
Page 101 and 102:
- 306 - coccum geophilum) collected
Page 103 and 104:
- 308 - TABLE 1. Number of scleroti
Page 105 and 106:
15 10 5 Mil!. sclerotia per m 2 ..
Page 107 and 108:
- 312 - species, and its mycelium c
Page 109 and 110:
- 314 - Melin, K & Nyman, R, 1940:
Page 111 and 112:
- 316 - Fig. 1. Meleericium. udicol
Page 114 and 115:
- 319 - Fig . 4. Sistotrema pistill
Page 116 and 117:
- 321 - Fig. 6. Trechispora invisit
Page 118 and 119:
FRIESIA . Bind X . Hefte 4-5 . 1974
Page 120 and 121:
- 325 - Poresvampen har i tidens l
Page 122 and 123:
FRlESIA • Bind X . Hefte 4-5 . 19
Page 124 and 125:
- 329 - F Ol. 1964 C. RIBER RASMUSS
Page 126 and 127:
- 331- V. Europæiske Mycologiske K
Page 128 and 129:
- 333 - Skærmformet Poresvamp (Gri
Page 130 and 131:
- 335- Sjældne svampearter i Peder
Page 132:
FRIESlA, Bind X , hefte 4-5, 1974 T
Page 135 and 136:
- 338- specialisten Dr. JAHN i Detm
Page 137 and 138:
- 340 - Lund, Samsøe: Om den trøf
Page 139 and 140:
- 342 - Stokken 120-140 X 3-5 mm, m
Page 141 and 142:
- 344 - TremeZla indecorata SOMMERF
Page 143 and 144:
- 346- FRIESIA . Bind X . Hefte 4-5
Page 145 and 146:
- 348 - litteratur, metodik, serolo
Page 147 and 148:
- 350 - 1819-25)*) og L. FUCKEL: Fu
Page 149 and 150:
- 352 - ninger om systematisk tilh
Page 151 and 152:
- 354 - medlemmerne må kunne færd
Page 153 and 154:
- 356 - styrelsens forslag blev ved
Page 156 and 157:
Hyphodontia papillosa L enzi t es s
Page 158 and 159:
Agaricales A manita citrina, ex cei
Page 160 and 161:
- 363 - "knæet" på et græsstrå;
Page 162 and 163:
H elvella erispa Ascomycetes Hetero
Page 164 and 165:
- 367 - efter ekskursionen gik ud m
Page 166 and 167:
L ecci nu m aur antiacum S, scaber
Page 168 and 169:
H ygrophor u s coccineus, conicus,
Page 170 and 171:
- 373 - FORENINGEN TIL SVAMPEKUNDSK
Page 172 and 173:
- 375- transportmidler og de øvrig
Page 175 and 176:
H ebelo rn a crustulinif orme Hypho
Page 177 and 178:
- 380- særlig nævnes Mycena pears
Page 179 and 180:
- 382- gode fund skal dog nævnes h
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Lactar ius aur an tiacus 2, blenniu
Page 183:
Myxomycetes Brejeldia maxima Ascomy
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- 389 - SVAMPEUDSTILLING DEN 18.-19
Page 188 and 189:
- 391 - Fig. 2. Svampeudstillingen
Page 190 and 191:
- 393 - ORDINÆR GE NERALFORSAMLING
Page 192 and 193:
- 395 - F O R E N IN G E N TIL SVAM
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Phlebia ochraoeo-juloa, hydnoides)
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- 399- Der blev på ekskursionen le
Page 198 and 199:
- 401 - Fig. 3. Den blomsterrige l
Page 200 and 201:
Coprinus at ramen t ar i us 1, 2, p
Page 202 and 203:
- 405 - der har bevirket meget fors
Page 204:
Gasteromycetales Calvatia gigantea
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- 410 - af i kanten af et spor i yn
Page 209 and 210:
- 412 b l a d (Stropharia aeruainos
Page 211 and 212:
- 414 Fig. 1. Heteroporus (Abortipo
Page 213 and 214:
- 416 - lagt i 1968 på engen ved P
Page 215 and 216:
Flora Agarieina D anica We regret t
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Friesia X, 4-5

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