Preliminary results of pear breeding with monogenically determinated dwarfing pattern
The article gives the first results of breeding of pear complex donors which combine monogenically determined dwarfing pattern (gene D), high winterhardiness and scab resistance and some other traits. Above 500 selections have been obtained, one complex donor has been revealed. The seedlings have the evident morphological similarity with paternal selections. Seedlings are winter-hardy enough - there were no winter injures in the field conditions even during severe winter seasons of 2002…2003 and 2009…2010, and in winter 2005…2006 when the temperature was 36°C below zero, just insignificant injures of one-year increment were noted. One complex donor has been picked out. It combines monogenic dwarf pattern, scab resistance and winter hardiness with fruit of late summer and early autumn ripening, broad-pyriform or wide conic shape, greenish-yellow with washed orange blush on the sunny side of fruit. Fruit weight is 120…140 g, flesh is white, melt, buttery and average dense. Taste is fresh or sour-sweet up to 4,2 mark, it greatly depends upon the harvest date.