Untitled - International Rice Research Institute

More documents

Recommendations

Info

Detection frequency (%) 120 100 East Asia Europe Latin America South Asia Southeast Asia Sub-Saharan Africa 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. 52. Detection frequency (a) and level (b) of Phoma sp. from imported untreated seeds, 1990-97. azonated and loosely floccose to hairy with even margins. Aerial mycelia are pressed to the media, olive black at the center, and become grayish olive to olive yellow outward. On the reverse side of the agar plate, the colony appears zonated. It is dark olive at the center and becomes grayish olive to olive yellow toward the margins. At 21 °C under alternating 12-h NUV light and 12-h darkness, colonies are thin but spread very fast and attain a 6.89-cm diam in 5 d. They are azonated with even margins. Aerial mycelia are pressed to the media. The color is dark olive green at the center and grayish olive outward. On the reverse side of the agar plate, the colony appears azonated. The color is olive black at the center and dark olive outward. At 28 °C under alternating 12-h fluorescent light and 12-h darkness, colonies spread thinly but very fast and attain a 7.10-cm diam in 5 d. They are azonated to slightly zonated, hairy to loosely floccose with even submerged margins, and grayish olive. On the reverse side of the agar plate, the colony appears slightly zonated and is dark olive, becoming lighter outward. 49
a b e c e → d Fig. 53. Habit character of Phoma sorghina (Sacc.) on (a) whole seed (10X), (b) palea and lemma (25X), and (c) sterile lemmas (40X) showing dark, globose to subglobose, ostiolate pycnidia. Photomicrograph of P. sorghina showing (d) pycnidia and (e) conidia at 40X. Observed frequency (%) 40 30 20 10 0 Sterile lemmas Awn Partition bet. lemma and palea Seed part Entire seed Lemma/ palea only or both Fig. 54. Observed frequency of Phoma sp. occurrence on the seed. Fig. 55. Plate cultures of Phoma sp. showing colony growths on PDA, PSA, and MEA incubated at ART, 21 °C, and 28 °C at 15 d after inoculation. 50
Page 2 and 3: Contents Foreword Preface v vi INTR
Page 4 and 5: Introduction The purpose of seed he
Page 6 and 7: Functions of seed health testing Se
Page 8 and 9: % infected seed lots 100 80 60 40 2
Page 10 and 11: Table 3. Pathogen profiles closely
Page 12 and 13: Table 4. Germination (%) of untreat
Page 14 and 15: Microorganisms associated with seed
Page 16 and 17: Identification of fungi detected on
Page 18 and 19: Detection frequency (%) 100 80 60 4
Page 20 and 21: moderately fast and attain a 4.32-c
Page 22 and 23: Detection frequency (%) 120 100 Eas
Page 24 and 25: They are feathery to slightly fluff
Page 26 and 27: Observed frequency (%) 120 100 80 6
Page 28 and 29: Frequency level (%) 120 100 East As
Page 30 and 31: a 4.90-cm diam in 5 d. They are eve
Page 32 and 33: Detection frequency (%) 90 80 East
Page 34 and 35: gray, becoming dark near the margin
Page 38 and 39: Sarocladium oryzae (Sawada) W. Gams
Page 40 and 41: a b c e f d f Fig. 35. Habit charac
Page 42 and 43: Fig. 38. Occurrence of black kernel
Page 44 and 45: a b d → → → e → f → f →
Page 46 and 47: d a b e → → → → → f c g h
Page 48 and 49: Fig. 46. Occurrence of minute leaf
Page 50 and 51: of the agar plate appears slightly
Page 54 and 55: Pinatubo oryzae Manandhar & Mew Dis
Page 56 and 57: ange with orange. The pionnotes are
Page 60 and 61: Other fungi detected on rice seeds
Page 62 and 63: a b e c d Fig. 65. Habit character
Page 64 and 65: a d d b c Fig. 69. Habit character
Page 66 and 67: → → → a b f f e d e e c f Fig
Page 68 and 69: a b a Fig. 76. Habit character of F
Page 70 and 71: a b d c d e e Fig. 79. Habit charac
Page 72 and 73: a b c → → → d → Fig. 83. Ha
Page 74 and 75: → → → a b d c Fig. 86. Habit
Page 76 and 77: a b c Fig. 89. Habit character of P
Page 78 and 79: a b d c e Fig. 92. Habit character
Page 80 and 81: → → → → a b e f → c d Fig
Page 82 and 83: a b c d Fig. 100. Habit character o
Page 84 and 85: → → → → → → a → →
Page 86: Savary S, Willocquet L, Elazegui FA

Untitled - International Rice Research Institute

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?