September, 1955 
ELIZABETH THE QUEEN: 10 plants 
emerged; all survived and produced new 
corms, 7 of which had very thin small le- 
sions at the sides of the core bases. Fu- 
sarium was recovered from 2 of 4+ corms 
cultured. 
Brown rot isolate 50-7 
Dr. F. E. BENNETT: 8 plants emerged ; 
all survived and produced new corms. All 
new corms had thin basal rot lesions. Fu- 
sarium was recovered from 2 of 5 corms 
cultured. 
MARGARET Futon: 10 plants 
emerged; all survived and produced new 
corms. No disease symptoms developed. 
SPOTLIGHT: 10 plants emerged; all 
survived and produced new corms. Nine 
of the new corms appeared to have thin 
basal rot lesions developing when the 
corms were cleaned, but the symptoms 
were not distinct. The corms were placed 
in an incubator at 26 degrees C. and left 
Table 21.—Results of greenhouse tests 
ForsBerG: Fusartum Disease or GLADIOLUS 
49] 
for 15 weeks. The lesions did not develop 
further, and attempts to recover the Fu- 
sarium from these corms failed. 
ELIZABETH THE QUEEN: 10 plants 
emerged; all survived and produced new 
corms, 9 of which had no disease symp- 
toms. The remaining corm had a diffused 
basal rot lesion spreading halfway up the 
side of the corm. Fusarium was recovered 
from this lesion. 
Brown rot isolate 50-22 
Dr. F. E. BENNETT: 6 plants emerged ; 
5 survived and produced new corms. Four 
of the new corms had typical thick brown 
rot lesions. One corm also had brown vas- 
cular strands. Iusarium was recovered 
from all 4+ affected corms. One corm had 
no disease symptoms. 
MARGARET Futton: 10 plants 
emerged; 8 survived and produced new 
corms. Seven of the new corms had brown 
rot lesions on the bases and sides. Four 
on gladiolus variety Picardy inoculated with 
Fusarium, February, 1952; new corms were examined in August of the same year. 
NumsBer or New Corms OstraINED 
Pants |— = acy as FuSARIUM 
IsOLATE | Devet- | | ee Vascular Basal ReE- 
GPeD. | “Totaly. Mealehy |p a Dis- Dry COVERED* 
| ot ] z R 
coloration ot 
Brown rot 45-8........ 9 1 0 0 0 1 0/0 
Brown rot 45-74....... 10 3 2 1 0 0 1/1 
Brownrot 47-1... ..... 6 1 0) 0 1 1 0/1 
Brown rot 47-12....... + 0) 0 0 0 0 0/0 
Brown rot 47-32....... 10 2 0 0) 0 2 0/0 
Brown rot 49-8........ 10 9 6 0 3 0 2/6 
Brown rot 50-7........ 10 oe al D, 0 0 0 0/1 
Brown rot 50-22....... 7 1 ie 0) 1 0 0 1/1 
"Ee 66 19 10 40 2 4 4 4/10 
Wasculat45=7Orscos ss. 10 9 3 0) 6 0 6/6 
WascularAG-G.ny:.. . fale - 10 3 0 0 3 0 0/3 
Wascular46-9) 21... ...- 10 10 10 0 0 0 0/0 
Vascular 47-10......... 10 9 8 0 1 0 0/1 
Vascular 49-4... 0.2... 7! 0 0 0 0) 0 0/0 
Mascular 49-23... 5.2... eel O ae 6 0 0 2 0/4 
Mascular (50-65. . 22... 5. 10 oe Syearsl 2 2 0 0/4 
Wascular' 50-24 =. .5.5.5:. 10 6 1 0) 0 5 1/4 
Wasenlar 50228. 0... ... 9 8 1 0 i 0 Tf 
MOL al eae as he ees 386 62 | 34 2 19 7 14/29 
Basal dry rot 49-20..... 10 5 4 0 1 0 1/3 
Basal dry rot 50-23..... 10 3 0 0 2 1 | 0/2 
Basal dry rot 50-26..... 10 2 0 0 0 2 1/1 
WOLaar ne AS Ae 30 10 4 0 3 i 2/6 
WheeksNowls. 25.0450 Ss: 10 8 5 0 | 8 0 0/3 
heck Nov 24s a. se. eee ale 8. | + 0) 4 0 0/3 
(Check No. 3.2/2.2. -.. 10 92 Al 9 0 0 0 0/4 
HDL ae ee te es ope 30 25 | 18 0 7 0 0/10 
*The numerator indicates the number of successful isolations, 
isolations were attempted. 
the denominator the number of corms from which 
