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Sexuality of Phytophthora infestans and the role of oospores as a primary infection source of potato late blight

100%

Zarzycka H., Sobkowiak S.

Journal of Plant Protection Research

1999

tom 39

nr 2

Results of experiments with isolates A1 and A2 from populations occurring in Poland in the years 1993-1998 were compared. Mating types A1 and A2 did not significantly differ with respect of virulence spectrum, pathogenicity level and virulence diversity (Shannon index). After pairing isolates A1 and A2 formed oospores; their morphological characteristics were described. On selected fields a test was performed whether the oospores could play a role as a source of primary infection. Local populations occurring on three fields were characterized. Results obtained on investigated 3 separate fields, located in 2 voivodeships of southern Poland were compared. It was stated on the basis of the proportion of both mating type isolates, race complexity and diversity, that oospores could play a role as a source of primary infection, at least in one of localities in Boguchwała, podkarpackie voivodeship.

Timing of megasporogenesis in Tripsacum species [Poaceae] as related to the control of pomixis and sexuality

84%

Leblanc O., Savidan Y.

Polish Botanical Studies

1994

tom 08

Comparison of life history strategies of three Gobiidae Pomatoschistus minutus [Pallas, 1770], P.microps [Kroyer, 1838], Gobius niger Linneaus, 1758, [Pisces, Teleostei] over their geographical range

59%

Bouchereau J. L.

Oceanological Studies

1997

tom 26

nr 2-3

Ograniczanie wyników

1 Journal of Plant Protection Research

1 Oceanological Studies

1 Polish Botanical Studies

1 Bouchereau J. L.

1 Leblanc O.

1 Savidan Y.

1 Sobkowiak S.

1 Zarzycka H.

1 1999

1 1997

1 1994

Wyniki wyszukiwania

Sexuality of Phytophthora infestans and the role of oospores as a primary infection source of potato late blight

Timing of megasporogenesis in Tripsacum species [Poaceae] as related to the control of pomixis and sexuality

Comparison of life history strategies of three Gobiidae Pomatoschistus minutus [Pallas, 1770], P.microps [Kroyer, 1838], Gobius niger Linneaus, 1758, [Pisces, Teleostei] over their geographical range