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- Author or Editor: A. J. Antcliff x
- HortScience x
Abstract
The value of tetraploid plants of Vitis for breeding has been pointed out on a number of occasions (9, 2, 13). Such mutants occur spontaneously in vineyards and are noticeable mainly by enlarged berries, thicker bunch stems, and darker green leaves. Collections have been accumulated either from vines or parts of vines found in the field (10) or from colchicine-induced mutants (2). Such plants are often cytochimaeras (4, 12) and a 2-4 constitution has been most frequently reported. If the inner layer determines behavior in breeding (3) either 2-4 or 4—4 plants could be used for this purpose.
Abstract
A method of obtaining systematic records of the growth arising at each node on grape vines (Vitis vinifera L. or interspecific hybrids including this species and various American species of Vitis) is described and illustrated. Derived variables which can be calculated from these records are listed and a code is given which enables construction of tables of the derived variables by computer.