Incidence of fruit rot on Japanese quince (Chaenomeles japonica) in Latvia

Abstract

Japanese quince (Chaenomeles japonica) is cultivated as a fruit crop because its fruit possesses valuable properties. The total area of Japanese quince in Latvia is continuously increasing; therefore, fruit rot can become an important reason of yield loss. The aim of this study was to clarify the fruit rot incidence in Japanese quince plantations in Latvia and explore the influencing factors of rot development in the year 2017. The evaluation of fruit rot was carried out during the fruit development in eight places of different regions of Latvia where Japanese quince is grown commercially. Three plantations of different Japanese quince cultivars in Dobele and seven plantations where Japanese quince is grown from seedlings were observed. Fruit rot incidence among plantations had no significant differences. Statistically significant differences in fruit rot incidence depending on quince growth stage (p<0.05) were found. Significant differences in fruit rot incidence were found between cultivars in Dobele.

Pseudomonas syringae pv. syringae causes bacterial canker on Japanese quince (Chaenomeles japonica)

“…Being native to Eastern Asia and naturally grown in central and Southern Japan, it is also cultivated in many countries including Iran (mostly together with forsythia), primarily as an ornamental plant for its showy flowers. Moreover, Japanese quince is also cultivated in Latvia, Lithuania, Russia, Poland, Belarus, Sweden, and Finland for its astringent apple-like pome fruits used in preserves and liqueurs, with potential as an alternate fruit crop (Jakobija and Bankina, 2018). Although Japanese quince is usually described as a healthy ornamental plant (Norin and Rumpunen, 2003), it can be attacked by a few pests and diseases, including aphids and scales, fungi and fire blight, reported as the main bacterial disease (Jewell, 1998).…”

The Diversity of Fungi Involved in Damage to Japanese Quince

“…However, as the planting areas of Japanese quince continue to grow, there is the potential for increased disease occurrence and harmfulness. Previous studies in Latvia have shown that fruit rot has reached agronomically significant levels in some growing seasons [ 14 ], with a high incidence of leaf spot diseases observed in several plantations [ 15 ]. Moreover, the presence of diseases also causes problems in other quince-growing countries, as indicated by research results where various fungi have been detected in Japanese quince [ 16 , 17 , 18 ].…”