32 
Journal of Agricultural Research voi.xxiv.no i 
Tablb I.— Minimum, optimum, and maximum temperature in degrees centigrade for 
Spore germination^ mycelial growth, and fruiting for ii species of Rhizopus 
Species. 
artocarpi .... 
nigricans .... 
r^exus . 
microsporus. 
tritici . 
delemar . 
nodosus . 
oryzae . 
arrhizus . 
maydis . 
chinensis.... 
Spore germination. 
Minimum. 
Absent. 
7 
8.5 
Present. 
1-5 
1-5 
i-S 
1-5 
1-5 
8.7 
1-5 
9 
1*5 
10 
Opti¬ 
mum. 
26 to 29 
26 to 28 
30 to 32 
26 to 28 
36 to 38 
36 to 38 
36 to 38 
36 to 38 
36 to 38 
43 to 45 
Maximum. 
Present. 
33*5 
33 
36.6 
33 
44 
44 
44 
44 
43-6 
SI 
Absent. 
34.5 
34 . 
3 B 
34 
45« 
45- 
45- 
45* 
45* 
52 
Species. 
ariocarpt .... 
nigricans ..., 
reflexus . 
microsporus. 
tritici . 
delemar . 
nodosus . 
oryzae . 
arrhizus . 
maydis . 
chinensis .... 
Mycelial growth. 
Minimum. 
Absent. 
7 
1*5 
1*5 
7*5 
1*5 
7*5 
1*5 
1*5 
7*5 
Present. 
9 
6.5 
1*5 
1*5 
6.5 
9.8 
6.5 
II 
7*4 
7*4 
10. 4 
Optimum. 
26 
23 
26 
25 
33 
32 
33 
31 
32. 
30. 
37* 
to 28 
to 26 
to 28 
to 27 
to 35 
to 34 
to 35 
to 34 
5 to 35. 5 
5 to 32. s 
5 to 40. 5 
Maximum. 
Present. 
32 
30 -7 
33 
30 
42 
41 
41.5 
42 
40.9 
40 
49 
Absent. 
33 
3 i« 
34 
32 
45- 
45- 
45* 
45* 
44-9 
44-5 
51 
Species. 
ariocarpt .... 
nigricans ... 
reflexus . 
microsporus. 
tritici . 
delemar . 
nodosus . 
oryzae . 
arrhizus . 
maydis . 
chinensis.... 
Fruiting. 
Minimum. 
Opti* 
mum. 
Maximum. 
Absent. 
Present. 
Present. 
Absent. 
12.5 
17 
22 to 27 
30 
32 
7 
10 
23 to 28 
30 
32 
7.6 
la 6 
26 to 28 
32.5 
i}) 
(^) 
i}) 
(f) 
e) 
12 
16.5 
32 to 34 
40 
45 
12 
15 
32 to 34 
38 
40 
12*5 
17 
32 to 35 
37 
38*5 
12 
15 
32 to 36 
37 
40 
II 
15 
32 to 34 
37 
40 
12 
16 
35 to 40 
45 
50 
' Not tested. 
