Vergara - 1976 - Physiological and morphological adaptability of ri

408 (fLlN-LAII-i AND RICE
Spores obsened t no fmmz lesion oreo)
45 6'}
- Conditions or spwuim if
as - 4 "'
Pmnio Dewper Dew tunp
I’
’¢
_ I l2 t2 I
2 l6 2 I’
35 ‘
2 g3 i: 1’
'
5 l2 22 I
s I6 22 I 5
‘I
l5 ' 4 ’
—
5 - i;
2 — '1
I
'
I’
I
Q5 - 1/2 '0’ 3
II
'1
I
‘I
o"
Q _j' | 1 | I | I 1 | l I 1
O O5 l 2 5 l0 I5 2O 25 30 35 40
Predicted sporestne/nrnalasion creel
5. Comparison of predicted and observed sporulation
til‘ race T of HEIBIIVIIIIKLTPOJTJIM maydm 0n mature Tms
from field plots subjected to various combinations of
dew temperature (“(1) and dew period (hr).
were unproductive. Iitnvet-‘er, plots 0f mean relative spore release rates under
relative humidity regimes of high-low" (H~L). low-high (L-H). loxv-Ioxv (L-L).
high-high (II-II). individually‘, indicated distinctly different linear responses to
varying wind speed. The predictive equations developed for relative percent
spore release rates in each of the four relative humidity regimes are:
H-H
Y = —.8558 + .0605(SIND)
R= = .9] Standard error of estimate = .5584
Variance Y = .645 + .OOOI7(WIND)= — .0l(2 WIND)
H-L
L-L
Y = —82.l093 + 2.524(WIND)
R’ = .99 Standard error of estimate = .2975
Variance Y = I83 + 00005 (WINDY — .OO3(2 WIND)
Y = £42638 + .6898(WIND)
R= = .98 Standard error of estimates = 2.9426
Variance Y = 17.923 + .0O5(WIND)E — .269(2 WIND)