grape varieties. In all these cases, embryo rescue has been successfully used to overcome the low viability of these seeds ( Ramming, 1990 ). In Prunus , since the early Tukey experiments ( Tukey, 1933 ), there have been a number of examples of the use
Chokecherry ( Prunus virginiana L.) is a small tree or large shrub widely distributed across the northern Great Plains in the United States and Canada. Native to North America, chokecherry is well adapted to a variety of severe conditions such as
Common cherrylaurel ( Prunus laurocerasus L.) and Portuguese cherrylaurel ( P. lusitanica L.), collectively referred to as cherrylaurels, are highly adaptable and important ornamental species in the United States and Europe. Cherrylaurels are
Interspecific hybridization is a technique commonly used by plant breeders to transfer genes from one species to another. Interspecific hybrids are usually obtained with greater difficulty than intraspecific hybrids because genetic barriers to hybridization usually increase with an increase in genetic unrelatedness (6, 11, 18, 41). Breeders resort to interspecific hybridization only when the characters are absent or inadequately expressed at the intraspecific level. Stone-fruit breeders have made much use of interspecific hybridization in the improvement of Prunus cultivars and rootstocks (3, 5, 6, 8, 12, 14, 15, 18, 19, 28, 34, 36, 37, 41, 42, 43) particularly in the subgenus Prunophora (plums), because plum species tend to intercross more freely than do members of other subgenera (41, 42). This paper will review the problems that have been encountered in making interspecific Prunus hybrids and the techniques that have been used to overcome them. In addition, techniques are presented that have been employed successfully with other interspecific hybridizations which may have application for Prunus.
-Ractivity in 17 commercial and experimental Prunus rootstocks. The results obtained with the screening protocol were compared with leaf SPAD readings obtained under field conditions that induced iron chlorosis. Materials and Methods Plant material
David’s peach [ Prunus davidiana (Carrière) Franch], a member of the Rosaceae family, is a tree with strong environmental adaptability that prefers high light; tolerates cold, drought, and low nutrient conditions; and exhibits sensitivity to
Central Asia is a center of origin for many important fruit and nut tree species, including wild and cultivated apricots ( Prunus armeniaca ) ( Vavilov, 1931 , 1951 ). Apricots, considered by many to be one of the most delicious tree fruits, have
Prunus (Rosaceae) is a large genus with significant economic importance, since it includes a variety of popular stone fruit species [e.g., peach ( Prunus persica ), apricot ( Prunus armeniaca ), almond ( Prunus dulcis ), and sweet cherry ( Prunus
Prunus (subfamily Prunoideae of the family Rosaceae) is a large and diverse genus comprising ≈400 species of trees and shrubs. This genus originated chiefly in the Northern hemisphere and is widely represented in Europe ( Dosba et al., 1994
‘Flordagold’, a yellow-fleshed peach Prunus persica (L.) Batsch, is adapted to areas with mild winters. It has been tested by growers and should extend the peach season where peaches with similar chilling requirements are grown.