Graft-induced phenotypic changes in tomato mutants.

Authors

  • N. Kedar
  • K. Verkerk

DOI:

https://doi.org/10.18174/njas.v15i1.17447

Abstract

Reciprocal grafts were made between normal tomato lines and 36 mutants characterized by different leaf shape and colour or by shortened internodes. Some yellow-top mutants temporarily became darker green after grafting them on normal green stocks. The height of short-internode and of normal scions was only slightly affected by the genotype of the stock, and the genotype of the scion was expressed almost independently of the genotype of the stock. No evidence was found for any effects resulting from the movement of growth inhibiting or accelerating substances from stock to scion or from scion to stock. The same held true for substances inducing virus-like symptoms. In one graft combination normal scions on stocks of a short-internode mutant with a tendency to wilt were greatly reduced in total length, stem diameter and length of leaves. The mutant line grafted on a normal rootstock showed increased vigour. The effects of the mutant as well as of the normal type were expressed in one direction only, that is from stock to scion but not vice versa. The "wilty" condition was induced in a normal scion grafted on the mutant stock. Mutant scions grafted on normal stocks still showed signs of wilting. These effects are thought to result from a deficient transport system in the "wilty" mutant.-Hebrew Univ. of Jerusalem, Rehovot, and agric. Univ., Wageningen. (Abstract retrieved from CAB Abstracts by CABI’s permission)

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Published

1967-02-01

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Papers