Defending champion Iowa State and perennial challengers Iowa and Oklahoma State provided two-fifths of the semifinal wrestlers after a formful quarterfinal session yesterday in the NCAA Wrestling Championships at College Park.

The Cyclones had a perfect afternoon, advancing all six first-day survivors. Oklahoma State, with five men remaining, didn't have a loser, either, but Iowa saw its entry reduced from seven to five. Iowa had a slight edge in the scoring, 50 1/2 points to the Cyclones' 45 3/4 and the Cowboys' 40 1/4.

One Hawkeye exit resulted from a direct confrontation with neighboring Iowa State. Greg Stevens, fifth-seeded at 177 pounds, was the predictable 9-5 loser to the Cyclones' Charles Gadson, ranked No. 4.

Heavyweight John Bowlsby was the other Iowa victim, and the seeding committee was surprised, if nobody else, when Jack Sefter, the undefeated Princeton representative, handled Bowlsby, with ease. he won, 6-0, for his 29th victory, although ranked sixth to Bowlsby's No. 3.

Sefter was wrestling with a blackened left eye, a souvenir of a Thursday victory over David Jack of Cal Poly. The other seven heavy weights, gave their whole division a black eye with a series of yawning efforts that produced little except stalling points.

Jimmy Jackson of Oklahoma State, who weights 361 pounds and is progressing toward a third straight NCAA title, used a 165-pound weight advantage to oust Mitch Hull of Wisconsin, 4-0.

Second-ranked Harold Smith of Kentucky fell to Brigham Young's seventh-rated Gary Peterson, 2-1, in a match that saw stalling assessments providing the only scoring.

Bob Golic, the Notre Dame linebacker, slipped into a semifinal match with Jackson by whipping oft-warned Jerry Anderson of Drake, 5-1. Anderson's point was also a result of stalling by Golic.

If the big guys proved lethargic, some of the smaller men provided thrills for the crowd of 8,984. The most exciting was the 167-pound victory by Iowa's second-seeded Mike DeAnna, who pinned Jeff Parker of Louisiana State with 16 seconds remaining.

Parker, who built an 8-3 lead, was still ahead, 11-10, as the clock ticked down to 25 seconds with both men standing in a neutral position. Suddenly, DeAnna overpowered his weary foe, threw and pinned him.

Another Iowa wrestler, third-ranked Scott Trizziono at 142, barely escaped relegation to the consolation bracket. Trailing Michigan State's Dennis Brighton with 32 seconds left, he managed a tying takedown, then won the match with a near fall.

Iowa State's Randy Nielson was most fortunate to survive his 142-pound match with Princeton's Steve Grubman. Grubman, now 28-1, was leading, 7-6, whenhe was assessed a point for stalling with to seconds left. In the overtime, the two were tied, 1-1, and Grubman was seemingly in position for a takedown when he lost control and wound up in Nielson's grasp.

The last area wrestler in the championship bracket, Navy 158-pounder Brian Rodgers, was routed by Kent State's Ron Michael, 16.6 a figure that included one point for 4 minutes 27 seconds of riding time.

Rodgers scored the first takedown, but trailed, 7-2, after the opening two-minute period, Michaels recording two near falls. Michaels injured his left leg with a minute remaining, but managed to survive.

Michaels' future appeared dim, since his semifinal opponent was Kelly Ward, the Kennedy High product from Iowa State who ousted Gary Bentrim of Northern Iowa, 7-3. Defending champion Lee Kemp of Wisconsin maintained course toward a final showdown with Ward tonight by thrashing Mike Burgher of UCLA, 13-5.

Ken Mallory of Montana State pinned Bill Walsh of Cleveland State with 13 seconds left in their 134-pound match. Walsh, trailing 13-11 but with considerable riding time, permitted Mallory to escape and went for a tying takedown. He was too careless, and Mallory capitalized.

Consolation-bracket competition began yesterday and Kevin Colabucci provided host Maryland's first half-point with an 8-2 decision over Russ Weglarz of Northwestern. Colabucci was later eliminated by Mike Burford of Drake, 12-4.

In other consolation matches, Navy's Paul Supchak lost to Oregon's Scott Bliss, 8-7, at 150 and Virginia's Jerry Young was beaten by Oregon's Dan Hollembaek, 7-5, at 158 Virginia'sSteve Silverberg won by forfeit at 134.