New Zealand Journal of Crop and Horticultural Science abstracts

---

Transgressive segregation for fruit quality traits in a cross between exotic and mutant genotypes of Lycopersicon

Gustavo R. Rodríguez
Guillermo R. Pratta

CONICET
Cátedra de Genética
Facultad de Ciencias Agrarias
Universidad Nacional de Rosario
CC 14 (S2125ZAA)
Rosario, Santa Fe, Argentina
email:grodrig@fcagr.unr.edu.ar

Roxana Zorzoli
Liliana A. Picardi

CIUNR
Cátedra de Genética
Facultad de Ciencias Agrarias
Universidad Nacional de Rosario
CC 14 (S2125ZAA)
Rosario, Santa Fe, Argentina

Abstract  A cross between a Lycopersicon esculentum accession carrying the mutant nor and an accession of L. esculentum var. cerasiforme was made to analyse the joint genetic effect upon the phenotypic segregation of some fruit quality traits in the F2 generation. Fruit from the F1, F2, and the parents (as testers) were evaluated for shelf life and another quality traits. Because of the presence of individuals falling beyond their parental phenotypes in the F2, a transgressive inheritance was estimated by a chi-square test. Transgressive inheritance was present for relevant traits such as shape, colour, firmness, and shelf life. The broad sense heritability values were highly significant for all traits and the shelf life was not associated with any other fruit quality trait. The use of this wild accession as a parent in tomato breeding programmes becomes an alternative for increasing fruit quality and especially prolonging the fruit shelf life.

Keywords  Lycopersicon esculentum var. cerasiforme; nor; plant genetic resources;shape;shelf life; tomato

New Zealand Journal of Crop and Horticultural Science, 2005, Vol. 33: 373–379
0014–0671/05/3304–0373      © The Royal Society of New Zealand 2005

H04087; Online publication date 9 November 2005
Received 22 October 2004; accepted 3 April 2005

PDF file of entire paper: Print-quality (237K) | screen-quality (126K)

---

This year's abstracts | Journal home page | All abstracts | Publishing home page