*Nikkei rebounds more than 7 pct before paring gains
*BOJ rate cut talk spurs rise, weaker yen also a boost
*But rises to be limited as worries about economy cling (Adds stocks, details)
By Elaine Lies
TOKYO, Oct 29 (Reuters) - Japan's Nikkei average jumped 6.4 percent on Wednesday as Sony Corp <6758.T> and other exporters surged after the yen weakened on talk that the Bank of Japan will cut interest rates at a policy meeting later this week. The BOJ will consider cutting rates but will watch market conditions before making a final decision, a source informed on the matter told Reuters. [
]The Nikkei business daily also reported on Wednesday without citing sources that the central bank is leaning towards cutting its 0.5 percent target for the unsecured overnight call money rate to 0.25 percent.
Investors took heart, buying beaten-down shares such as banks and carmakers, with Honda Motor Co <7267.T> and Toyota Motor Corp <7203.T> both climbing. The yen edged up after posting its biggest daily fall against the U.S. currency since 1974 [
] on Tuesday on the Nikkei report of a BOJ rate cut. The dollar was fetching around 97.48 yen by late morning in Tokyo. <JPY=>Market players welcomed the BOJ news, which led to active trade for a third successive day and appeared set to put the benchmark Nikkei <
> on course for two straight days of gains By the end of morning trade it was up nearly 1,000 points from Monday's close."Hopes of a BOJ rate cut are everything," said Masayoshi Okamoto, head of trading at Jujiya Securities.
But he and others remained wary, saying long-term measures to tackle the flagging global economy and shore up the sagging dollar have yet to be taken.
"As long as the dollar is below 100 yen there will be worries about Japanese company earnings in the second half of this business year, limiting the Nikkei's rebound," Okamoto said.
Major exporters such as Honda, Panasonic Corp <6752.T> and Canon Inc <7751.T>, all of which announced results this week, have based their earnings projections on a dollar rate of 100 yen and a euro rate of 135 yen.
Some said worries about the global economy are deep-rooted and cannot be completely erased even with the prospects of another wave of central bank rate cuts.
"There's still a lot of fear out there about the long-term issues since no solutions have yet been devised for these. We need some kind of concrete economic plan from the United States in particular," said Yutaka Miura, a senior technical analyst at Shinko Securities.
TIME FOR REBOUND
Others said it had simply been time for a rebound, given how far the Nikkei had fallen and how cheap shares had become.
The Nikkei's slide to a 26-year low drove its price-to-book ratio below 1 to 0.87 as of Monday, a rare development that means the value of all companies in the index is below the total value of the assets they hold.
"Based on technical factors such as the 25-day moving average, a recovery to the 9,000 level isn't totally impossible, but gloomy investor sentiment may make this hard," said Toshio Sumitani, general manager at investment information department of Tokai Tokyo Securities.
Firms announcing first-half earnings later on Wednesday include Sony and Toshiba Corp <6502.T>.
Honda surged 13.6 to 2,345 yen despite cutting its annual profit forecast on Tuesday, with net profit for the business year to March 31 expected to be 485 billion yen ($5.20 billion), down 19 percent from last year and lower than its previous forecast of 490 billion yen. [
]Toyota gained 9.8 percent to 3,480 yen.
Banks, savagely battered over the past few days on worries they might have to raise capital to cope with portfolio losses, also benefited, with the banking sub-index <.IBNKS.T> gaining 6.7 percent.
Japan's biggest bank Mitsubishi UFJ Financial Group <8306.T> rose 8.7 percent to 599 yen and second-ranked Mizuho Financial Group <8411.T> gained 3.2 percent to 221,800, both having sharply pared earlier gains. No.3 bank Sumitomo Mitsui Financial Group <8316.T> rose 5.7 percent to 354,000 yen.
Sony gained 2.7 percent to 2,050 yen and Canon rose 4.9 percent to 2,680 yen.
Trade was active on the Tokyo exchange's first section, with 1.2 billion shares changing hands, compared with last week's morning average of 986.5 million.
Advancing stocks outpaced declining ones by more than 7 to 1. (Reporting by Elaine Lies; Editing by Michael Watson)