THE GENUS PYTHIUM - An-Najah National University
THE GENUS PYTHIUM - An-Najah National University
THE GENUS PYTHIUM - An-Najah National University
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SUMMARY<br />
A key to the 48 taxa of Pythium recorded so far from the West Bank and<br />
Gaza Strip is given.isolation and preservation methods are also provided.<br />
The following species are described and illustrated: P. acanthicum Drechsler,<br />
P. anandrum Drechsler, P. aphanidermatum (Edson) Fitzp, P. coloratum<br />
Vaartaja, P. conidiophorum loki, P. debaryanum auct non Hesse, P. dissimile<br />
Vaartaja, P. dissotocum Drechsler, P. echinulatum Matthews, P. graminicola<br />
Subramaniam, P. intermedium de Bary, P. irregulare Buisman, P. iwayamqi S.<br />
Ita, P. mamillatum Meurs, P. middletonii Sparrow, P. monospermum Pringsh,<br />
P. nagaii S. Ita & Tokunga, P. oligandrum Drechsler, P. papillatum Matthews,<br />
P. paroecandrum Drechsler, P. pulchrum Minden, P. rostratum Butler, P.<br />
salpingophorum Drechsler, P. spinosum Sawada, P. splendens Braum, P.<br />
sylvaticum Campbell & Hendrix, P. torulosurn Coker & Patterson, P. ultimum<br />
var sporangiiferum Drechsler, P. ultimum Trow var ultimum, P. vantrepoolii V.<br />
Kouyeas, and P. vexans de Bary. Descriptions were produced from the study of<br />
several isolates in order to account for intraspecific variation.<br />
The other 17 taxa were outlined briefly. These taxa were isolated only once or<br />
twice and/ or failed to from sexual reproductive structures following their<br />
identification (P. deliense Meurs, P. dimorphum Hendrix & Campbell, P.<br />
hypogynum Middelton, P. myriotylum Drechsler, P. orthogonon Ahrens, P.<br />
periplocum Drechsler, P. pyrilobum Vaartaja, and P. tracheiphilum Matta),<br />
taxa without oogonia (P. group 'F', P. group 'G', P. group 'HS', and P. group<br />
'L'), and taxa described by the author in 1982 from Britain (P. lucens, P.<br />
lutarium, p. minor, p. pachycaule, and P. parvum) and were also isolated from<br />
the West Bank.<br />
Occurence of the different taxa in the West Bank and Gaza Strip as well as in<br />
other neighbouring countries is briefly outlined. All known records of rare<br />
species are mentioned.<br />
All known host records of Pythium from the West Bank and Gaza Strip are<br />
also listed.