Study of the plant resources from genus Pyrus in the Troyan region

• Published in: Acta horticulturae no. 981; pp. 191 - 195
• Main Authors: Stoyanova, T, Dinkova, H, Minev, I
• Format: Journal Article
• Language: English
• Published: International Society for Horticultural Science 01.01.2013
• Subjects: blight; cultivars; flowering; fruit growing; fruits; pears; Pyrus; Venturia pirina
• ISSN: 0567-7572
• DOI: 10.17660/actahortic.2013.981.27

The market of pear fruits becomes obviously poor. One of the reasons is the limited assortment of tolerant cultivars to the economically important diseases for the species, widespread in the last decade, namely scab (Venturia pirina) and bacterial blight (Ervinia amylovora). During expedition investigations of the local plant resources in the Troyan region it was established that there is a great diversity of members of genus Pyrus, covering morphological and biological characteristics. Some of them were found only in separate micro regions. The greatest part of the discovered forms ripens in late August, early September. The predominant part of them has comparatively large sized fruits. The main emphasis of the study was their behaviour towards scab and bacterial blight. The pear form Spasovtsi was selected, which is characterized by late flowering. The fruits are medium sized with weight of 190 g and an attractive appearance. They ripen from mid-September to mid-October. It is distinguished for high and regular fertility. During the period of study no symptoms of scab and bacterial blight were found on pear Spasovtsi, which allows growing it for biological fruit production.