Because most regions of Japan are in the temperate climate zone, many deciduous and evergreen fruit crops are cultivated in Japan. In addition to fruit cultivation in the temperate zone, some southern areas, such as the Ryukyu Islands that stretch from Kyushu to Taiwan, are at the northern limits for tropical fruit production without the need of artificial heating. At present, annual fruit prod...

An efficient protocol for the genetic transformation of cell suspension cultures of several citrus cultivars using Agrobacterium is described. Cell suspension cultures of Citrus sinensis ‘Hamlin’, ‘Valencia’ and ‘OLL8’ (an early maturing ‘Valencia’ like somaclone), Citrus unshiu ‘Okitsu wase’ and Citrus reticulata ‘Ponkan’ and ‘W. Murcott’ were transformed using A. tumefaciens EHA105. It was de...

This study aimed to evaluate the effect of rootstocks on fruit sugars, organic acids, and carotenoids. The contents of sugars and organic acids in fruits were determined by HPLC. Total acidity (TA), total soluble solids (TSS), and pH value of the juice were also evaluated. Total carotenoids and chlorophylls contents were measured using a spectrophotometer. The content of ethylene in fruits was ...

We have previously reported that the application of- used as isoprothiolane (IPT), a fungicide against rice blast- 20 to 30 days before harvest improved peel color in satsuma mandarin fruit (Citrus unshiu Marcow). However, mechanism by which IPT improves coloration is not yet fully understood. This study examined effects of on plant hormones such gibberellic acid (GA) and abscisic (ABA), carote...