observed to increase in a similar manner. From week 1 to week 6, the increase was fast.
Between week 6 and 11, the increase was slower. From week 11 onwards, both length and
width increased sharply until week 17 when the fruits turned greenish yellow and were
considered as ripe. The other eight fruits studied also showed similar pattern of growth,
although the exact week when the fruit underwent a rapid expansion may differ by
approximately one week. The pattern of increase was similar to the changes in weight and
diameter during guava fruit development reported by Yusof and Mohamed (1987). Based on
these results, guava fruits used here were considered to be matured but unripe between week
11–14 and ripe after week 17. This will be used as the basis for classifying ripe and unripe
guava fruits in the next study.