Fruit Drop Lab Report

Figure 8 Fruit drop and BS of longkong fruit (Lansium domesticum) during development on the tree. (A) Fruit drop at the SZ1 ( ) and the SZ2 ( ). (B) BS at the SZ1 ( ) and SZ2 ( ). It should be noted that in these tests no mechanical force was exerted on the fruit. A slight mechanical force (about 10 N) will lead to drop by breakage at the SZ2, from 15 WAFB onward. Data are means of 25 replicates of one season. Data on the same stage with the same letter are not different significantly (P ˂ 0.05, t-test). 1.4.2 Effects of ethylene and 1-MCP

Effects of ethylene and 1-MCP were determined using bunches that were severed from the trees at 5, 8 and 13 WAFB. Bunches picked at 5 WAFB, and kept at 25°C, fruit drop was low in untreated controls, higher after ethylene treatment, and lower than the controls in the 1-MCP treatment (Figure 9A). In bunches severed at 8 WAFB, and kept at 25°C, fruit drop in the controls was 20% by day 4 after ethylene treatment it was about 30% by day 4 (Figure 9C). When bunches were taken at 13 WAFB, and kept at 25°C, fruit drop in the controls was absent by day 4 …show more content…
In fruit exposed to
1 µl•L-1 ethylene, fruit drop was more than 20% by day 4 (Figure 9E), and more than 40% by day 7 (data not shown), 1-MCP treatment had no effect (Figure 9E). At any of the picking dates no spontaneous fruit drop during storage was found at the SZ2, in controls, ethylene treatment, and 1-MCP treatment (data not