East Germans Marita Koch and Bettine Jahn set world indoor records for the 200 meters and 60-meter hurdles yesterday on the opening day of the European indoor track and field championships in Budapest.

And, in East Lansing, Mich., Indiana's Sunder Nix bettered his own indoor world record for the 440 in running 46.66 seconds in the Big Ten track championships. The old record was 46.92.

Also, in the AIAW championships at Harvard, Rutgers' Lori McCausley followed Nix's lead and set a record in the 440, running 53.29 to beat the mark of 53.52 established by Diane Dixon of Ohio State earlier this year.

The 440 is no longer run internationally, indoors or outdoors, having been supplanted by the 400 meters.

Koch, 26, the Olympic 400-meter champion, was timed in 22.39 seconds in the 200, improving on her own world record of 22.63 that she set earlier this season. Jahn won her event in 7.75 seconds, two-hundredths of a second inside the old mark. All indoor records are unofficial.

Koch finished almost a second ahead of Britain's Joan Baptiste, who had a personal best of 23.37 to take the silver medal ahead of West Germany's Christina Sussiek, 23.61.

The afternoon session opened with Jahn's performance. The 24-year-old textile engineering student led from the start in beating the record of 7.77 seconds set in the European championships three years ago in Sindelfingen, West Germany, by Zofia Bielczyk of Poland.