On Wednesday, state media reported the government had rejected Gambari's request for the three-way talks.
"Until the generals' military hardware is crumbled, they won't listen to anyone"
Oomlwin, Yangon, Myanmar
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Brigadier-General Kyaw Hsan, the information minister, told Gambari that Myanmar's generals would not support outside "interference".
Kyaw Hsan said "currently the tripartite meeting will not be possible", the New Light of Myanmar daily reported on Wednesday.
Gambari's second visit to Myanmar in a month is an attempt to pressure Myanmar's military government to adopt democratic reforms.
In comments published in the New Light of Myanmar, Kyaw Hsan said the government would not be pressed into making democratic reforms.
"If you wish to see democracy flourishing in Myanmar, you should try to persuade other nations to co-operate with us in assisting [us with] the task," he said.
"Here, what we would like to say is that we will welcome positive co-ordination and co-operation for Myanmar affairs, but will never accept any interference that may harm our sovereignty."
State media has indicated the government is only willing to adopt its own seven-stage "road map to democracy".
|Buddhist monks led popular pro-democracy |
protests in Myanmar in September [AFP]
The plan has been criticised by Western governments as a method to keep the military generals in power.
Gambari appealed on Wednesday for restrictions on Suu Kyi and all political prisoners to end, the UN and Kyaw Hsan said.
However, Myanmar's rulers say that Suu Kyi must first abandon her support for international sanctions against the government.
Suu Kyi led the NLD to victory in a general election in 1990, but Myanmar's generals have not allowed her party to take office.