In bell pepper, high temperatures decreased fruit set, but the
number of flowers was not significantly reduced (Erickson and
Markhart, 2001). Sato et al. (2000) reported that the percentage
of fruit set was much less at 32/26 8C day/night temperatures
than at 26/22 8C in two tomato cultivars, and one cultivar did
not set fruit at 32/26 8C. The same result on fruit set was
obtained in our study, but it is noteworthy that ‘Nyoho’ can set
fruits at either normal or high temperatures at about the same
percentage. Poor fruit setting in strawberry plants has been
attributed to damage by insects, insufficient pollination, or
spring frost (Kronenberg, 1959). Low temperatures below
10 8C were also found to reduce fruit set in ‘Jucunda’
strawberries (Braak, 1968). However, there is little information
available about the effect of supraoptimal temperatures on fruit
set in strawberry, especially regarding differences among
cultivars.
In bell pepper, high temperatures decreased fruit set, but thenumber of flowers was not significantly reduced (Erickson andMarkhart, 2001). Sato et al. (2000) reported that the percentageof fruit set was much less at 32/26 8C day/night temperaturesthan at 26/22 8C in two tomato cultivars, and one cultivar didnot set fruit at 32/26 8C. The same result on fruit set wasobtained in our study, but it is noteworthy that ‘Nyoho’ can setfruits at either normal or high temperatures at about the samepercentage. Poor fruit setting in strawberry plants has beenattributed to damage by insects, insufficient pollination, orspring frost (Kronenberg, 1959). Low temperatures below10 8C were also found to reduce fruit set in ‘Jucunda’strawberries (Braak, 1968). However, there is little informationavailable about the effect of supraoptimal temperatures on fruitset in strawberry, especially regarding differences amongcultivars.
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