By T.W. Mew, P. Gonzales
This instruction manual specializes in the real seedborne fungi that reason ailments of the foliage, stem, leafsheath, root, grain, and inflorescence in rice. It presents info on greater than 50 species which have been detected in rice seed in the course of regimen checking out and analysis.
Seed healthiness checking out can also be a way of quality controls that guarantees the alternate of fine quality seed between scientists or learn facilities. hence, the Seed healthiness Unit at IFW features because the gatekeeper of secure germplasm flow from and inside of IRRI, the Philippines, and outdoors.
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Additional resources for A Handbook of Rice Seedborne Fungi
The colony on the reverse side of the agar plate is slightly zonated and white to creamy. 78-cm diam in 5 d. They are azonated and floccose to deeply felted with even to slightly sinuate margins. Colonies are white and become purple at the center. The colony on the reverse side of the agar plate appears azonated and white with dark purple centers. 93-cm diam in 5 d. They are zonated, slightly felted with even margins, and white to purple. Saltation of colonies was observed in some plates. The colony on the reverse side of the agar 33 a b → → → → d→ → g → → e → → →→ f c Fig.
On the reverse side of the agar plate, the colony appears zonated, black at the center, and alternating dark olive and grayish olive outward. 70-cm diam in 5 d. They are azonated with even margins, cottony to fluffy, and olive black, becoming light gray outward. On the reverse side of the agar plate, colony appears zonated. The color is black, becoming brownish black to dull yellow brown toward the margins. 68-cm diam in 5 d. They are Detection frequency (%) 120 East Asia Europe Latin America South Asia Southeast Asia Sub-Saharan Africa 100 80 60 40 20 0 Detection level (%) 70 60 50 40 30 20 10 0 1990 1991 1992 1993 1994 1995 1996 1997 Year Fig.
On (a) whole seed (10X) and (b) awn portion (17X). (c) Mycelial growth of F. moniliforme showing false heads (49X). Photomicrograph of F. moniliforme showing (d) mycelia, (e) microconidiophores, (f) microconidia, and (g) macroconidia at 40X and stained with lactophenol blue. Observed frequency (%) 120 100 80 60 40 20 0 Sterile lemmas Awn Entire Partition bet. lemma seed and palea Lemma/ palea only or both Seed part Fig. 31. Observed frequency of Fusarium moniliforme occurrence on the seed. plate is zonated and white to dark purple.