Asian pear calleryana
Pyrus calleryana, or the Callery pear, is a species of pear tree native to China and Vietnam, . Callery pear has been used as rootstock for grafting such pear cultivars as Comice, Bosc, or Seckel, and especially for Nashi. Pyrus calleryana was.
CAES NEWSWIRE | Invasive Pears
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The Bradford pear cultivar, other P. calleryana cultivars and P. betulifolia or Asian pear, can hybridize and produce fertile fruit. In addition to this, fertile pear.
Description:Thinning will require up to a half-hour per tree on younger trees and one hour plus on older trees. The best thinning usually requires two times to effectively leave no more than four to six inches apart. The tree is extremely vigorous on P. The real problem that has become apparent in recent years is that though the individual cultivars cannot self-pollinate and produce a viable fruit they do readily cross with the Asian Pear. Therefore, SSAP markers have the advantages of high heterogeneity and adequate information sites, which should make them more effective in revealing the genetic relationships within species. The fruit ripens in mid-August.