3. Results
3.1. Effect of temperature on fruit set and fruit growth
Because results from the two trials were similar, only the
2004 data for RGR and fresh weight of the first inflorescence, as
well as the 2004 data for all parameters measured in the second
inflorescence are presented since these are from the original
experiment.
The number of inflorescences, flowers, and fruits were lower
at 30/25 8C than at 23/18 8C in both cultivars (Tables 1 and 2).
Results were consistent for both years, although ‘Nyoho’
produced more flowers and fruits in 2006 than in 2004 in both
temperature treatments. ‘Nyoho’ produced more inflorescences,
flowers, and fruits than ‘Toyonoka’. In ‘Nyoho’, no significant
difference was found in the percentage of fruit set between 30/
25 8C and 23/18 8C. However, the percentage of fruit set in
‘Toyonoka’ was significantly lower at 30/25 8C than at 23/18 8C
in both years. A significant interaction between temperature and
cultivar was found in the percentage of fruit set.