Utilization of three non-ripening mutants in tomato breeding for prolonged shelf life
Anna Seroczyńska, Katarzyna Niemirowicz-Szczytt, Aleksandra Korzeniewska
Department of Plant Genetics, Breeding and Biotechnology
Warsaw Agricultural University
Nowoursynowska 166, 02-787 Warszawa, Poland
The aim of the investigation was to evaluate F1 hybrids
incorporating nor, rin, and Nr
genes with respect to yield, fruit quality, and shelf life. The studies
were started in 1984 and in the period from 1985-1992 a series of
comparative experiments with F1 hybrids
was carried out. ‘Sława Nadrenii’ was the standard cultivar. The total
yield and commercial yield of F1 hybrids
were analysed. The storage life and percentage of sound fruits picked at
mature green, breaker, and ripe stages were estimated.
F1 hybrids have the best fruit colour, firmness, and shelf life of the three
groups of studied hybrids. Most of the F1
hybrids with nor gene yielded at the level of ‘Sława Nadrenii’,
whereas the best (C 36×nor and S 15×nor) exceeded it significantly in some years.
In the period 1985-1989 the last harvesting took place in the middle of at the end of September and
the storage time lasted for 77 (1988) to 99 days (1986). Changing the way
of growing plants from the field to a non-heated plastic tunnel caused a
2-4 weeks delay of the last harvest and a shift in the storage period
besides fruit quality improvement.
The ripe fruits of the best hybrids were stored on average to 2-4 weeks
longer than ‘Sława Nadrenii’, and breaker and green 2-3 weeks longer. F1
hybrids of nor were also superior to ‘Sława Nadrenii’ with respect to
fruit firmness. The stage of maturity at harvest affected the final fruit
colour, flavour, and shelf life of the studied hybrids. The breaker fruits
combined good quality with long shelf life. In 1996 hybrid S×15 nor was registered
as ‘Rafał F1’.
Seroczyńska A., Niemirowicz-Szczytt K., Korzeniewska A., 1998. Utilization of three
non-ripening mutants in tomato breeding for prolonged shelf life. Folia Horticulturae 10/1: 3-14.