Hinting at additional unanticipated fee increases, California's public universities yesterday delayed a vote to raise student fees, saying the governor's revised budget expected Wednesday makes further cuts a definite possibility.

Both the University of California and California State University systems were planning to vote next week to increase student fees by about 25 percent for the fall. The increase would have amounted to $795 in additional fees a year at UC and $394 more at CSU.

But as the state Legislature wrestles with a budget gap estimated to be as high as $35 billion - about one-third of the general fund - new proposals have been introduced that could call for more extensive cuts and require extra fee increases.

One package discussed by the Legislature on Monday calls for UC to swallow an additional $80.5 million in cuts, and CSU another $70 million. Another proposed by Assembly Republicans calls for $400 million in additional cuts to UC and $200 million for CSU.

UC is anticipating cuts between these two numbers, said Brad Hayward, a UC spokesman. Although UC regents haven't discussed an upper limit to fee increases, Hayward said the total boost would probably not surpass tuition at UC's comparable public institutions.

Student fees at UC this year totalled $4,017, while comparison institutions averaged $6,074. If the Legislature and governor pass the package the result would be $150.5 million in additional cuts to UC and CSU, which some analysts say is far more likely than the Assembly Republican proposal, UC and CSU fees could increase roughly 10 percent, on top of the proposed 25 percent, said Steve Boilard, of the nonpartisan Legislative Analyst's Office. But, Boilard said, it would be unlikely that both systems ask students to shoulder the entire budget gap.

However, UC officials emphasized that if or when fees are hiked, one-third of the revenue generated would be transferred into student financial aid, ensuring access to low-income students.

Both governing boards will discuss the proposed fee increases at their meetings next week, but won't vote until June or July, after the governor has presented his revised budget.