454 
Both systems were available to workers 
after 1940. 
PURPOSE OF PRESENT 
INVESTIGATION 
This study was undertaken to rectify 
the confusion appearing in the literature 
regarding the relationship between the 
causal agent or agents of the different 
forms of the Fusarium disease on gladiolus 
and the symptoms produced. The main 
object of the investigation was to deter- 
mine if different strains of Fusarium pro- 
duced the different symptoms and if these 
Tuble 1—Sources of the 40 isolates of the gladiolus Fusarium used in the infection ex- — 
Ittinois NATuRAL History SURVEY BULLETIN 
Vol. 26, Art. 6 
strains could be fitted into well-defined 
groups on the basis of their pathogenicity 
and physiological characters. 
METHODS 
Several hundred isolates of Fusarium 
were cultured by the writer from diseased — 
gladiolus corms in the years 1945 through 
1950. Thirty-three of these isolates to- 
gether with six isolates received from Ray 
Nelson of Michigan State College and one — 
isolate from Robert O. Magie of the Uni- 
versity of Florida Gulf Coast Experi- 
ment Station (a total of 40 isolates) 
periments and physiological studies reported in this study. 
Sects DaTeE oF DISEASE 
, IsOLATION Form 
CS 3T Pe Sage eee A ag a Dec. 10, 1945 | Vascular 
Merl 0 Seis ealpe at hacgne Mae Dec. 10, 1945 | Vascular 
Vil ae ps eR a A Dec. 13, 1946 | Vascular 
FF AE sg ol ie oe Dec. 14, 1946 | Vascular 
BG6-9- capes yaks Dec. 17, 1946 | Vascular 
AGAR Cerin cy nates ck Nov. 1, 1946 | Vascular 
ATG AO a 8 ad bier Jan. 24, 1947 | Vascular 
Vy fs | § We oo ES Ms ee ca Feb. 5, 1947 | Vascular 
OE, Se ee pe re Jan. 14, 1949 | Vascular 
AGA Sse 2s oti hope: Jan. 19, 1949 | Vascular 
AO 932 rads ce tates Jan. 21, 1949 | Vascular 
762 Et Ha ey Are Jan. 21, 1949 | Vascular 
= Ao Bk Leto ae eats cher Jan. 21, 1949 | Vascular 
BO ee es eee ee Feb. 15, 1950 | Vascular 
SODA a sars ss eanaboeleoles April z, 1945 | Vascular 
| AF ka teat cope Oh ae Nov. 4, 1949 | Vascular 
SOS ao ope. April 14, 1950 | Vascular 
BOER Veena Met, ee Feb. 5, 1945 | Brown rot 
0 ES Ae et Le Dec. 14, 1945 | Brown rot 
BESET oe stiot, Seen ath hela th Dec. 14, 1945 | Brown rot 
AGT Bnei crs porns sek oe Dec. 10, 1945 | Brown rot 
BG ee rv oaks ne ook Dec. 14, 1945 | Brown rot 
TOs ated ae us Dec. 16, 1946 | Basal dry rot 
Bi] alee, ei che  p Jan. 23, 1947 | Brown rot 
AaB has ora ecto e Jan. 24, 1947 | Basal dry rot 
17/21) BR ARE am Feb. 5, 1947 | Brown rot 
757) kd aaa ER ner SO Feb. 13, 1947 | Brown rot 
MEDD Sse ee Nh Sept. 27, 1947 | Brown rot 
AOE le aA arte, sph oes Jan. 14, 1949 | Brown rot 
709 1 V7 ke a pee mR Br Jan. 19, 1949 | Brown rot 
1 (OS 1 SSA cnet Jan. 19, 1949 | Brown rot 
CN OY fae egenrave ii ei eS Feb. 15, 1950 | Brown rot 
BOD at aa ae 1950 | Brown rot 
BOD SG eae oe arate eae Sept. 3, 1948 | Brown rot 
AT AO ics a See Jan. 23, 1947 | Basal dry rot 
7 OE cri AN ainda Jan. 24, 1947 | Basal dry rot 
7 ASP Sn ae Retire caalins pe Jan. 14, 1949 | Brown rot 
2S 1 Uae ee oe 8 Jan. 19, 1949 | Basal dry rot 
CU Bd eae iio aie Secs ae Nov. 25, 1936 | Basal dry rot 
BOLO F saan oe ol amtayeonee Dec. 23, 1948 | Basal dry rot 
GLADIOLUS 
VARIETY 
Dr. F. E. Bennett 
Dr. F. E. Bennett 
Phyllis McQuiston 
Phyllis McQuiston 
Bit o’ Heaven 
Unknown 
Beacon 
Dr. F. E. Bennett 
Margaret Beaton 
Lantana 
Myrna 
Dream of Beauty 
Mother Kadel 
Yellow Herald 
Unknown 
Corona 
Unknown 
Picardy 
Picardy 
Picardy 
Dr. F. E. Bennett 
Phyllis McQuiston 
Aladdin 
Picardy 
Beacon 
Corona 
Picardy 
Unknown 
Margaret Beaton 
Abu Hassan 
Wings of Song 
Ohio Nonpareil 
Spic and Span 
Picardy 
Picardy 
Picardy 
Valeria 
Wings of Song 
Souvenir 
Souvenir 
*Isolated by Ray Nelson, Michigan State College, East Lansing. 
LocaLiry 
Wichert, II]. 
Wichert, Ill. 
Wichert, Ill. 
Wichert, Ill. 
Wichert, IIl. 
Cairo, Ill. 
Wichert, III. 
Wichert, III. 
Wichert, Ill. 
Champaign, III. 
Wichert, Ill. 
Wichert, Ill. 
Wichert, Ill. 
Wichert, Ill. 
East Lansing, Mich. 
Oregon 
California 
Wichert, Ill. 
Wichert, Ill. 
Wichert, Ill. 
Wichert, Ill. 
Wichert, Ill. 
Wichert, Ill. 
Wichert, Ill. 
Wichert, Ill. 
Wichert, Ill. 
Fort Collins, Colo. 
Cocoa, Fla. 
Wichert, Ill. 
Wichert, Ill. 
Wichert, Ill. 
Champaign, Ill. 
Bradenton, Fla. 
East Lansing, Mich. 
Wichert, Ill. 
Wichert, IIl. 
Wichert, Ill. 
Wichert, Ill. 
East Lansing, Mich. 
East Lansing, Mich. 
{Isolated by Robert O. Magie, University of Florida Gulf Coast Experiment Station, Bradenton. 
