Results 181 to 190 of about 18,742 (220)

Induction of sexuality in heterothallic Pythium spp. by cholesterol

Canadian Journal of Botany, 1971
Cholesterol and related sterols were found to stimulate the sexual reaction between compatible strains of heterothallic Pythium species but were not essential to the mating process. The sterols induced the formation of antheridia, oogonia, and mature oospores in reportedly unisexual strains of P. catenulatum and P.
Child, J. J., Haskins, R. H.
openaire   +1 more source

Activity of pectinases, amylases, and saccharase in Pythium spp.

Zentralblatt für Bakteriologie, Parasitenkunde, Infektionskrankheiten und Hygiene. Zweite Naturwissenschaftliche Abteilung: Mikrobiologie der Landwirtschaft, der Technologie und des Umweltschutzes, 1979
The activity of pectine-lyase, polygalacturonase, pectine-methyl-esterase, amylase, and saccharase in Pythium ultimum, Pythium oligandrum, and Pythium debaryanum was determined. Cultures of fungi were cultivated under different temperatures and pH-values within 24 hours and 15 days.
J, Krátká, D, Veselý
openaire   +2 more sources

PYTHIUM SPP. ASSOCIATED WITH ROOT DIEBACK OF CARROT IN ONTARIO

Canadian Journal of Plant Science, 1976
Pythium spp. were isolated from roots of carrots with symptoms of root dieback, other muck crops, and weeds collected at the Holland–Bradford Marsh in Ontario. The isolates were identified and their pathogenicity to cultivars of carrot and other crop plants was examined. P. irregulare, P. sylvaticum, P. sulcatum, P. torulosum, P.
N. N. KALU, J. C. SUTTON, O. VAARTAJA
openaire   +1 more source

Parasitism of oospores of Pythium spp. by strains of Actinoplanes spp.

Canadian Journal of Microbiology, 1993
Strains of Actinoplanes spp. were evaluated for their in vitro parasitism of oospores of Pythium aphanidermatum, Pythium arrhenomanes, Pythium irregulare, Pythium myriotylum, and Pythium ultimum. Oospores of Pythium arrhenomanes, Pythium irregulare, and Pythium myriotylum were identified for the first time as hosts of Actinoplanes spp.
N. I. Khan, A. B. Filonow, L. L. Singleton, M. E. Payton   +3 more
openaire   +1 more source

PYTHIUM SPP. PRODUCE RUSTY ROOT OF CARROTS IN ONTARIO

Canadian Journal of Plant Science, 1975
The cause of the rusty-root disorder in carrots grown in muck soils in Ontario was investigated. The incitant was shown to be a living agent, greater than 3 μm and smaller than 53 μm in size, and capable of spread in sterilized soil. Because it was found that rusty root was controlled effectively in pot-grown carrots by the fungitoxicants Dexon, PP ...
openaire   +1 more source

Chemotropism of germ-tubes from zoospore cysts of Pythium spp.

Transactions of the British Mycological Society, 1986
Zoospores of Pythium aphanidermatum and P. graminicola were attracted to malt-peptone agar (MPA), and their cysts germinated from the side nearest to MPA. Pre-encysted spores placed near MPA did not germinate preferentially towards the nutrient source, but the germ-tubes often changed direction and grew towards MPA.
R.T. Mitchell, J.W. Deacon
openaire   +1 more source

Pythium oligandrum (mycoparasite of Pythium spp.)

PlantwisePlus Knowledge Bank, 2022
openaire   +1 more source

Pathogenicity of Pythium spp. and Phythopthora drechsleri to Eucalypt spp.

Australasian Plant Pathology, 1974
GC Marks, FY Kassaby
openaire   +1 more source

Management of Pythium spp. by Arbuscular Mycorrhizal Fungi

2020
Sarika R. Bhalerao, Pratiksha R. Gund, Sunita D. Bansod, Mahendra Rai   +3 more
openaire   +1 more source

Comparison of aggressiveness and fungicide sensitivity of four Pythium spp. that cause damping-off of soybean in the United States

Canadian Journal of Plant Pathology, 2021
, Alison E Robertson
exaly