TOKYO (AP) _ Gov. Rafael Hernandez-Colon of Puerto Rico and a 45-member delegation are on a one-week mission to attract more Japanese investment to the U.S. island commonwealth.

Hernandez-Colon arrived in Tokyo Saturday night. He will be host at an investment seminar which officials of more than 130 Japanese enterprises are expected to attend, Umio Uehara, director of Puerto Rico's foreign investment promotion, said Sunday.

The governor also is to meet with government officials, businessmen and bankers in Tokyo and Osaka, Uehara said in a telephone interview.

Matsushita Electric Industry Co. and Wacoal, a Japanese women's underwear and garment maker, now have plants in Puerto Rico. Mitsui and Co. and Mitsubishi Corp., two leading Japanese trading firms, have tuna-canning plants there.