Seedlings Damping-off of Chenopodium quinoa Willd.

LAICHMANOVÁ, Monika. Seedlings Damping-off of Chenopodium quinoa Willd. Plant Protection Science. Praha: Česká akademie zemědělských věd, Vol. 40, No. 1, s. 5-10, 5 s. ISSN 1212-2580. 2004.

Základní údaje

• Originální název: Seedlings Damping-off of Chenopodium quinoa Willd.
• Autoři: LAICHMANOVÁ, Monika.
• Vydání: Plant Protection Science, Praha, Česká akademie zemědělských věd, 2004, 1212-2580.

Další údaje

• Typ výsledku: Článek v odborném periodiku
• Utajení: není předmětem státního či obchodního tajemství
• WWW: URL
• Organizační jednotka: Přírodovědecká fakulta
• Klíčová slova anglicky: seedlings damping-off; Chenopodium quinoa; germination; emergence; Pythium spp.; Fusarium spp.
• Štítky: Chenopodium quinoa, emergence, Fusarium spp., germination, Pythium spp., seedlings damping-off

Anotace

The causal agents of damping-off of quinoa seedlings were determined in greenhouse experiments. Ascochyta caulina, Fusarium avenaceum, Fusarium spp., Alternaria spp. and Pythium spp. were isolated from infected parts of quinoa seedlings. The most frequent Pythium sp. was P. aphanidermatum. Pathogenicity tests confirmed that P. aphanidermatum and F. avenaceum were the causal agents of damping-off of quinoa seedlings under greenhouse conditions. A comparison of the reaction of quinoa with that of other susceptible plants (spinach, cabbage, sugar beet) showed that quinoa is most susceptible to the pathogen before emergence, during germination till the end of the stage of the first pair of true leaves. Germinable quinoa seeds seemed to have a lower ability to emerge from the soil. This serious problem is caused not only by pre-emergence damping-off from pathogens but more so by a complex of several adverse factors during germination when quinoa is most sensitive.