Untitled - International Rice Research Institute
Untitled - International Rice Research Institute
Untitled - International Rice Research Institute
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a<br />
b<br />
→→<br />
f<br />
→<br />
→<br />
c<br />
e<br />
→<br />
d<br />
→<br />
Fig. 48. Habit character of Nigrospora sp. on (a) whole seed (10X), (b) sterile lemmas (32X), and (c) plea (32X)<br />
showing shiny, black, and globose conidia. Photomicrograph of Nigrosopra sp. showing (d) mycelia, (e) conidiophore,<br />
and (f) conidia at 40X.<br />
Observed frequency (%)<br />
70<br />
60<br />
50<br />
40<br />
30<br />
20<br />
10<br />
0<br />
Sterile<br />
lemmas<br />
Awn<br />
Partition<br />
bet. lemma<br />
and palea<br />
Seed part<br />
Entire<br />
seed<br />
Lemma/<br />
palea<br />
only or<br />
both<br />
Fig. 49. Observed frequency of Nigrospora sp. occurrence<br />
on the seed.<br />
Fig. 50. Plate cultures of Nigrospora sp. showing colony<br />
growths on PDA, PSA, and MEA incubated at ART, 21<br />
°C, and 28 °C at 15 d after inoculation.<br />
46