Despite similar inhibition of photosynthesis, the depletion of ovary glucose and starch was not as severe in shade as during a comparable water deficit. Ovary abortion prevalent during water deficits did not occur in the shade. It is suggested that this difference may have been caused by more translocation in shade than during the water deficit, which prevented low sugar contents necessary to trigger an up-regulation of senescence genes known to be involved in abortion. Nevertheless, sucrose feeding reversed kernel size losses and it is concluded that feeding acted generally to replace diminished photosynthetic activity.

The extracts from 00 species of fruits and vegetables cultivated in Okinawa region of Japan were prepared by sequential extraction with acetone at-* and 2*῍ ethanol solution at 2*, and their polyphenol contents and +,+-diphenyl- ,-picrylhydrazyl (DPPH) radical-scavenging activities were measured. The total polyphenol contents of both extracts from edible parts varied in the range of *.-/ to +.,.*. ῏ mol-gallic acid equivalent/g-fresh weight. The plants with higher polyphenol content showed a consistent tendency to exhibit higher radical-scavenging activity. Sapodilla (Manikara zapora), canistel (Pouteria campechiana), guava (Psidium guajava) and starfruit (Averrhoa carambola), originally came from the tropical zone, showed both higher level of polyphenol content and radical-scavenging activity, and they contained proanthocyanidin. The following higher group composed of bayberry (Myrica rubra), red cabbage (Brassica oleracea), suizenjina (Gynura bicolor) and purple-fleshed sweet potato (Ipomoea batatas), which contained anthocyanins. Nigana (Crepidiastrum lanceolatum), botanboufuu (Peucedanum japonicum) and nishiyomogi (Artemisia Indica), cooked only in Okinawa region within the country, also showed a high polyphenol content and radical-scavenging activity. In addition, there were some extracts from inedible parts of fruits, which possessed almost the same or higher level of polyphenol content and radical-scavenging activity, compared to their edible parts.

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