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A single seedling exhibiting a semidwarf growth habit was found in an open-pollinated clingstone peach [Prunus persica (L.) Batsch] population. The growth habit was upright and open, with short, spur-like lateral branching. Tree size was about half that of its siblings as a result of shorter internodes. The total number of nodes on first-order branches was not significantly different from that on standard-sized trees. The semidwarf growth habit remained stable after vegetative propagation. Segregation in sexual progeny showed the trait to be highly heritable.

Free access

Abstract

A study was initiated in 1976 to establish the productivity of peach trees dwarfed by the recessive dw gene. This mutant gene limits plant stature (to about one-third that of standard peach cultivars) by markedly reducing shoot intemode length (2). Yield data obtained during the 2nd and 3rd year of the study indicated that trees dwarfed by the dw gene are more precocious than standard trees as they are usually grown (2, 3). These data also suggested that the productivity per unit area of mature dwarf trees should exceed that obtainable from standard trees.

Open Access

Abstract

The original ‘Brooks’ cherry (Prunus avium L.) seedling was evaluated at the Wolfskill Ranch of the University of California, Davis from 1970 to 1985. Clones of the original seedling have been evaluated for fruit quality in Contra Costa County since 1978 and in Fresno County at the University's Kearney Agricultural Center since 1981. ‘Brooks’ registered its most outstanding performance at the Kearney Field Station.

Open Access