Indian Society of Genetics & Plant Breeding

Genetical studies on flower and fruit characters in an interspecific cross of tomato

Published on

Genetical studies on fruit weight, equatorial diameter and
polar diameter of fruit, fruit shape index, locules/fruit, TSS
content of fruit juice, length of style, ovary diameter and
pollen diameter were made in the F, and F2 populations
of an interspecific cross L. pimpinellifolium x L. esculentum
of tomato. The parents represented a wide range of
variation for all the characters. Characteristics of F, and
F2 populations varied in different characters. However, in
all the characters genes with negative effect exhibited
dominance in. both F, and F2 populations. Group of genes
detected for fruit weight were 22-29, for equatorial diameter
11-13, for polar diameter 8-10, for style length 5-7, for
pollen diameter 5-8 and 2 groups of genes for locules/fruit
and TSS of fruit juice. Only one group of gene was
detected for fruit shape index and ovary diameter. Fruits
borne by few F2 segregates were medium sized, round
to slight flatlish, shiny red and having appreciable TSS
content In the fruit juice.

Keywords: Lycopersicon esculentum, Lycopersicon pimpinellifolium, flower and fruit characters, degree of dominance.


Year: 2001
Volume: 61
Issue: 2
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906



Download PDF