The yesterday's editions of The Washington Post, the map accompanying the story on the land dispute between the Transkei and South Africa was in error. A map correctly indicating the area in dispute appears with the Transkei story on Page A18 in todays editions.

Transkei, the first black homeland to gain independence from South Africa, broke diplomatic relations with Pretoria over a land dispute and said it would "join the liberation movements" and "propagate majority rule in southern Africa."

The rupture leaves Transkei with no formal ties to any nation. It has informal relations with another newly independent homeland, Bophuthatswana, but the international community has refused to recognize the two states because they are a product of South Africa's much criticized policy of apartheid, or separate racial development.

Transkei depends heavily on Pretoria's largesses for its financial existence, with two-thirds of the current budget coming from South Africa. Some observers feel Transkei took yesterday's bold step of breaking with the country that created it less because of the land dispute than to gain legitimacy in the eyes of the world.

Chief Kaiser Mantazima, the prime minister of Transkei, said his country had been "treated with contempt" by South Africa and as a result, "We have been compelled to join the liberation movements and claim the whole of South Africa as belonging to blacks and whites, with the blacks controlling the majority."

"We are going to propagate majority rule in southern Africa," Mantanzima said.

A break between South Africa and Transkei would be a damaging blow to the homelands policy, which South Africa hopes will lead eventually to a loosely linked federation of the nine independent black states with Pretoria.

Under the plan of separate development begun in the 1950s, the nine independent states are to be carved out South Africa for the country's 18 million blacks. The scheme has encountered international disapproval because it allocates 13 percent of South Africa's land to the majority of its population, while the rest is reserved for South Africa's 4.5 million whites.

Many blacks also reject the homelands policy because it deprives them of their citizenship in South Africa and makes them citizens of the homeland of their tribe, although they may never have lived there.

Annoucning the break in the National Assembly Mantanzima said South Africa "will use everything possible to ostracize us and apply sanctions against us. If they withdraw financial aid from us, it will be what we expected them to do. They are capable of anything."

South Africa has no official reply to the Transkei action, but Prime Minister John Vorster said yesterday he would take up the matter in Parliament today.

The ostensible reason for the dispute is South Africa's claim that East Griqualand in the foothills of the Drakensberg Mountains on Transkei's eastern border, is part of "white" South Africa. Pretoria recently transferred administration of the region from the Cape Province to the Natal Province.

The rift in relations, however, may have less to do with land claims than with other political considerations, observers here believe.

Some observers see it as an attempt by Transkei to gain credibility with the rest of Africa, which has scorned the leaders of Transkei and Bophuthatswana for accepting what the United nations and the Organization of African Unity have called a "sham independence."

In his speech today, Matanzima appealed "to the Western countries to come to our assistance." Recently he warned the West that if it did not help him, he would "turn to the East."

After his speech yesterday, however, Matanzima said his main concern was the disputed land and he doubted that his action would make Transkei more acceptable to the international community.

There is also speculation that Matanzina's action was meant to counter growing opposition to his role in Transkei's politics.

Recently, Matanzima forced an unmarried Cabinet member to resign because she became pregnant. Several weeks ago, she and 15 other members of Parliament joined the opposition.

Following his statement, the leader of the opposition, Cromwell Dikd, shook Matanzima's hand saying, "this is what I've always wanted."

Matanzima noted that Dikd had always criticized the Transkei government for not declaring a convention war on South Africa. Now, he said, "My government will prepare itself and train its army for the future military confrontation with the whites of South Africa."

The Transkei leader cite the failure of South Africa to consider the "documentary and conclusive evidence placed before" it regarding Transkei's territorial claims to East Griqualand.

"We were treated with contempt," he said. "we can no longer take it."