THE GENUS PYTHIUM - An-Najah National University

More documents

Recommendations

Info

Figs. 73-78. Pythium middletonii.(3)habil showing hyphae and sporangia. (74,75) sporangia, one proliferating internally. (76-78) oogonia with antheridia. (Bars; \0 .urn). 42
PYTHIUM MONOSPERMUM Pringsh., Jb. wiss. Bot. 2:288(1858). Figs. 79- 84. COLONY MORPHOLOGY:Colonies on CMA showing a chrysanthemum pattern with no aerial mycelium. MYCELIUM: Main hyphae 5-8(av. 5.2) urn wide. SPORANGIA:Filamentous, noninflated. Zoospores produced at 5_20°C. OOGONIA:Terminal and intercalary, smooth, l5-20(av. l7.2± 0.6-95% C.!.)).lm diam. ANTHERIDlA:I-2(-5)joogonium, monoclinous and diclinous, OOSPORES: Plerotic, wall 1-2(av. I.O± 0.1-95% C.I.) urn thick; ooplast 5-8 (av. 7.3),um diam. TEMPERATURE-GROWTH RELATIONSHIPS:Minimum 50C, optimum 250C, maximum 300e. Daily growth rate on CMA at 250C 11.6mm·.;" MATERIAL EXAMINED: ex soil, Jenin(FCCAU 113.1; FCCAU 113.3). OCCURRENCE: Rarely isolated from soil; it was found in only one of the fields sampled. PYTHIUM MYRIOTYLUM Drechsler, J. Wash. Acad. Sci. 20:404(1930). OCCURRENCE:lnfrequently isolated from diseased roots and rarely from soil (found in one field). Other records from the region come from peanuts in Israel(Frank, 1968) and Libya(Pucci, 1969). PYTHIUM NAGAII S. Ito & Tokunga, J. Fac. Agric. Hokkaido Univ. 32:209( 1933). Figs. 85-90,85 COLONY MORPHOLOGY:Colonies on CMA showing a diffuse pattern;scanty aerial mycelium developed. MYCELIUM: Main hyphae 3-5(av.3.5) urn wide. SPORANGIA: Terminal, ovoid, occasionally globose, (I8-35)x(l5-25) (av. 25x21) .um diarn, occasionally proliferating; zoospores produced at 1O-150C. OOGONIA: Terminal, occasiounally intercalary, smooth, 16-23 (av. 18.6± 0.6 43
Page 1 and 2: THE GENUS PYTHIUM In the West Bank
Page 3 and 4: PREFACE This monograph is aimed at
Page 5 and 6: SUMMARY A key to the 48 taxa of Pyt
Page 7 and 8: Pythium species such as P. periploc
Page 9 and 10: II. MATERIALS AND METHODS A. Isolat
Page 11 and 12: Microscopic examination: Microscopi
Page 13 and 14: Growth rate and temperature limits
Page 15 and 16: 9(4) 10(9) 11(10) 12(11) 13(12) 14(
Page 17 and 18: 29(28) 30(29) 31(30) 32(31) 33(28)
Page 19 and 20: 46(45) 47(1) 48(47) 49(48) 50(48) 5
Page 21 and 22: Figs. 2-7 Pythium acanthicum. (2,3)
Page 23 and 24: Figs. 8-11. Pythium anandrumn. Spor
Page 25 and 26: Figs. 16-19. Pythiurn anandrurn. Oo
Page 27 and 28: Figs. 20-23. Pythium aphanidermatum
Page 29 and 30: Figs. 24-29. (24-26) Pvthium c%rotu
Page 31 and 32: Figs. 30-35. (30-33) Pythium debary
Page 33 and 34: Figs. 36-41. Pythium dissimile. (36
Page 35 and 36: Figs. 42-47. Pythium dissotocum. (4
Page 37 and 38: Figs. 48-54. Pythium echinulatum. (
Page 39 and 40: Figs. 55-59. Pvthium graminicola. (
Page 41 and 42: MATERIAL EXAMINED: ex Vitia fabae,
Page 43 and 44: PYTHIUM LrTARIL:\l Ali - Shtaveh, B
Page 45: PYTHIUM MIDDLETON II Sparrow, Aquat
Page 49 and 50: Figs. 85-90. (85) Pythium nagaii, o
Page 51 and 52: Figs. 91-94. Pythium oligandrum.(91
Page 53 and 54: Figs. 95-100. Pythium papillaturn.
Page 55 and 56: PYTHIUM PULCHRUM Minden, Mykol. Unt
Page 57 and 58: Figs. 101-108. (101-103) Pythium ro
Page 59 and 60: Figs. 109-114. Pythium salpingophor
Page 61 and 62: FIgs. 115-120. (115) Pythium sylvat
Page 63 and 64: Figs. 121-126. Pythium torulosum. (
Page 65 and 66: MATERIAL EXAMINED: ex Brassica oler
Page 67 and 68: Figs. 127-131. Pyihium vanterpoolii
Page 69 and 70: Figs. 132-136. Pythium vexans. (132
Page 71 and 72: V.HOST LIST A list of the vascular
Page 73 and 74: VI REFERENCES Agrios, G.N. 1978. Pl
Page 75 and 76: Garrett, 195 I. Ecological groups o
Page 77 and 78: Reichert, I. 1939. Palestine: Disea
Page 79 and 80: VII. INDEX OF FUNGAL NAMES Fusarium
Page 81: ~I ~) ~IJ ~~I Pythium JI t'.~~~ 61:

THE GENUS PYTHIUM - An-Najah National University

Create successful ePaper yourself

Delete template?

Save as template?