13 Výsledek
During the summer of 2001, leaf spots resembling those caused by Septoria musiva Peck. were observed on shining willow (Salix lucida Mühl. subsp. lucida) at Leclerville, Québec, Canada (46°34'19″N,71°59'35″W). Affected leaves had brown, necrotic leaf spots (>5mm in diameter) surrounded by a
Following prolonged spring rains and cool summer weather in 2010, mature weeping willow trees (Salix babylonica L.) growing next to a manmade lake in Marin County, CA, showed symptoms of a previously undescribed disease. During summer, small branches developed dark brown to black, sunken cankers.
Dwarf willow myrtle (Agonis flexuosa (Willd.) Sweet) cv. Nana, an evergreen ornamental shrub belonging to the Myrtaceae, is grown in Italy as an ornamental potted plant. In November 2008, a widespread new leaf spot disease was noticed on ~80% of 5,000 6-month-old potted plants. Plants were obtained
Short rotation woody biomass cultivars developed from fast-growing shrub species of willow (Salix spp.) have superior properties as perennial energy crops for the Northeast and Midwest US. However, the insect pest potato leafhopper (PLH) Empoasca fabae (Harris) can cause serious damage and reduce
The disposal problem associated with phytoextraction of farmland polluted with heavy metals by means of willow requires a biomass conversion technique which meets both ecological and economical needs. Combustion and gasification of willow require special and costly flue gas treatment to avoid
The antioxidative activity of a total of 92 phenolic extracts from edible and nonedible plant materials (berries, fruits, vegetables, herbs, cereals, tree materials, plant sprouts, and seeds) was examined by autoxidation of methyl linoleate. The content of total phenolics in the extracts was
A new disease, causing death of mature white poplar trees (Populus alba L.), was observed in Hulla Valley in northern Israel in the summer of 2002. The affected branches turned yellowish brown, and the inner bark turned black. The bark dried out and separated from the underlying wood. Later,
From 1999 to 2010, withering of white willow was observed on trees growing along roads or irrigation canals in Torino, Alessandria, and Vercelli provinces of Italy, with incidence varying from 15, 25, and 30%, respectively. In spring and autumn 2008, six samples from withering branches with bark
Plant phenolics, especially dietary flavonoids, are currently of growing interest owing to their supposed functional properties in promoting human health. Antimicrobial screening of 13 phenolic substances and 29 extracts prepared from Finnish plant materials against selected microbes was conducted
In this report, we demonstrate that sodium hydrosulfide (NaHS), a hydrogen sulfide (H(2)S) donor, promoted adventitious root formation mediated by auxin and nitric oxide (NO). Application of the H(2)S donor to seedling cuttings of sweet potato (Ipomoea batatas L.) promoted the number and length of
Salix babylonica L. (weeping willow) is an important ornamental tree commonly planted in China. Since 2018, a new disease with a high incidence has been observed on S. babylonica at the campus of Nanjing Forestry University (NFU), Nanjing, Jiangsu, China. The symptoms began as small dark brown
Fusarium solani (Mart.) Sacc., causing wilt of leaves and twigs in the crown and annual cankers on trunks and branches of red oak (Quercus rubra L.) in the field, was found for the first time in Canada. F. solani is known to occur on red or black oaks of sect. LOBATAE: nuttall oak (Q. nuttallii E.
In October 2010, containerized Acer palmatum Thunb. trees ('Red Select', 'Viridis', and 'Hubb's Red Willow') with crown cankers and root rot were observed at a central Virginia nursery. Sections of lower stem cankers and rootlets were sampled from 14 trees by surface-sterilizing tissue and plating