Two types of hybrid chiorosis, 1 and 2, are known in wheat. The factorial basis of type 1 chlorosis was established by Hermsen (1966) and Tsunewaki (1966). It is caused by two complementary genes, Chi and Chg. Ch2 was located by Tsunewaki and Kihara (1961) on chromosome 3D. For the Chi gene, Nishikawa (1964) reported a location in the A or B genome but not in D. Recently, Hermsen and Waninge (1...

Tospoviruses are among the most devastating viruses of horticultural and field crops. Capsicum chlorosis virus (CaCV) has emerged as an important pathogen of capsicum and tomato in Australia and South-east Asia. Present knowledge about CaCV protein functions in host cells is lacking. We determined intracellular localization and interactions of CaCV proteins by live plant cell imaging to gain in...

Durable resistance to scab (Venturia inaequalis) of newly introduced cultivars is needed to achieve a considerable reduction of pesticide use. However, the assessment in the field on the level and durability of scab resistance is time and space consuming. A proper and fast indoor test should be a convenient tool to discard cultivars with a limited level of resistance at an early stage. As a res...

In North China, the high-quality pear cultivar “Huangguan” (Pyrus bretschneideri Rehd. cv), which is grafted onto dwarf quince A (Cydonia oblonga Mill. cv) rootstock and grown in calcareous soil, experiences severe iron (Fe) deficiency; this deficiency greatly constrains tree growth as well fruit yield quality. Therefore, we evaluated effects of six practices for alleviating chlorosis caused by...

A cellular automata model is proposed to analyze the progress of Citrus Variegated Chlorosis epidemics in São Paulo oranges plantation. In this model epidemiological and environmental features, such as motility of sharpshooter vectors which perform Lévy flights, hydric and nutritional level of plant stress and seasonal climatic effects, are included. The observed epidemics data were quantitativ...