Premium
Development of Cronartium flaccidum (Alb. et Schw.) Wint. on Vincetoxicum officinale Moench in Connection with some Environmental Factors
Author(s) -
Ragazzi A.
Publication year - 1983
Publication title -
journal of phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 60
eISSN - 1439-0434
pISSN - 0931-1785
DOI - 10.1111/j.1439-0434.1983.tb00575.x
Subject(s) - biology , inoculation , botany , horticulture
Experiments on the development of Cronartium flaccidum on Vincetoxicum officinale in connection with environmental factors (temperature, moisture, brightness) in the years 1975, 1976, and 1977 are reported. Uredia appeared from the 7th to the 13th day after inoculation and terminated from the 14th to the 18th day. Urediospores appeared from the 9th to the 18th day and ended from the 18th to the 25th day. High temperatures advanced the beginning of the disease's development, but interfered with subsequent development. Telial columns formed from the 18th to the 22nd day after inoculation. They were particularly influenced by precipitation, but high temperatures had a negative effect on their formation. Telial columns ripened 2–3 days after their formation. Light affected the appearance of uredia and telial columns: many more uredia and telial columns were formed at 4000/5000 lux than at 5000/6000 and 8000/9000 lux. The first occurrence of the symptoms was on the young leaves. Leaves of V. officinale, inoculated with dried aeciospores, did not show any infection.