Callery pear ( Pyrus calleryana ) was brought to the United States in the early 1900s for grafting onto fruit-producing european pear ( Pyrus communis ) trees to aid in fire blight management efforts ( Culley and Hardiman, 2007 ). Although this
exudates. Materials and Methods Extraction procedure. Stigma exudates were collected from flowers of pear ( Pyrus communis L.) and apple ( Malus pumila P. Mill.) in 2003 and 2004. Tree cultivars were ‘Anjou’ and ‘Bartlett’ pear and ‘Fuji
Pear ( Pyrus spp.) is one of the most important fruit crops of the Rosaceae family, ranking second to apple ( Malus × domestica ) in world and European production of pome fruit tree species ( Food and Agriculture Organization of the United
Abstract
‘Honeysweet’ is a new, high quality pear (Pyrus communis L.) with resistance to fire blight caused by Erwinia amylovora (Burr.) Winslow et al.
Abstract
Acetaldehyde is produced in fruit of pear (Pyrus communis L.) and can stimulate ripening. The action of selective inhibitors indicates that acetaldehyde operates independently of ethylene.
Pear ( Pyrus sp.) is one of the most important fruit trees in temperate regions around the world. More than 60% of the world’s pears are produced in China ( Huang et al., 2009 ). Chinese white pear ‘Dangshansuli’ originated in China and is the most
involved in fruit growth. Materials and Methods Plant materials and fruit growth. Seven 12-year-old japanese pear trees with uniform vigor from both cultivars, Atago and Shinkou, grafted onto Pyrus betulaefolia Bunge rootstocks were selected
flowering. Sink strength of newly expanding leaves for assimilates was greater than developing japanese pears ( Pyrus pyrifolia Nakai) within 30 dafb ( Zhang et al., 2005 ). Apple leaves similarly compete with developing fruit. Hansen (1971) determined
country, China grows more than 60% of the world pear ( Pyrus sp.) production ( Boyer et al., 1943 ; Wu et al., 2013 ). K is highly mobile in plants and constitutes up to 10% of plant dry weight ( Adams and Shin, 2014 ; Shin, 2014 ; Walker et al., 1996
test-crosses. Classical descriptions of S-phenotypes were well known for apple ( Malus × domestica Borkh.) ( Kobel et al., 1939 ), sweet cherry ( Prunus avium L.) ( Crane and Brown, 1937 ), japanese pear ( Pyrus pyrifolia L.) [Terami et al., (1946