Supplement, dated April 17, 2006, to the
                         Prospectus, dated May 2, 2005,
                                       of
           Seligman International Growth Portfolio (the "Portfolio"),
                    a portfolio of Seligman Portfolios, Inc.

Capitalized  terms  used  but not  defined  in this  Supplement  shall  have the
meanings given to such terms in the Portfolio's Prospectus.

The following  information is added after the second paragraph under the caption
entitled  "Seligman  International  Growth Portfolio - Portfolio  Management" on
page 23 of the Prospectus:

Mr. Matthew D. Hudson, Vice President and Equity Portfolio Manager of Wellington
Management,  has been involved in portfolio  management and securities  analysis
for the  Portfolio  since  2006.  Mr.  Hudson  joined the firm as an  investment
professional in 2005. Prior to joining Wellington Management,  Mr. Hudson was an
investment professional at American Century Investment Management (2000 - 2005).





                    Supplement, dated April 17, 2006, to the
             Statement of Additional Information, dated May 2, 2005,
                                       for
            Seligman International Growth Portfolio (the "Portfolio")
              a portfolio of Seligman Portfolios, Inc. (the "Fund")

Capitalized  terms  used  but not  defined  in this  Supplement  shall  have the
meanings given to such terms in the Fund's Statement of Additional  Information,
dated May 2, 2005 (the "SAI").

The  following  information  is added to Table A,  Table B and the  compensation
section,  respectively,  under the caption "Portfolio Managers -- Other Accounts
Managed By Portfolio Managers, and Compensation -- Seligman International Growth
Portfolio" on page 38 of the SAI (the table headings have been restated for your
convenience):

Table A



------------------------------------------------------------------------------------------------------------
     Portfolio Manager        Registered Investment     Other Pooled Investment       Other Accounts
                                   Companies                  Vehicles
------------------------------------------------------------------------------------------------------------
                                                                       
Matthew D. Hudson*           15 Registered             16 Pooled Investment     29 Other Accounts with
                             Investment                Vehicles with            approximately $3.4 billion
                             Companies with            approximately $3.1       in total assets under
                             approximately $4.7        billion in total         management.
                             billion in total assets   assets  under
                             under management.         management.
------------------------------------------------------------------------------------------------------------


Table B



------------------------------------------------------------------------------------------------------------
     Portfolio Manager        Registered Investment     Other Pooled Investment       Other Accounts
                                   Companies                  Vehicles
------------------------------------------------------------------------------------------------------------
                                                                       
Matthew D. Hudson*           0 Registered Investment   0 Pooled Investment      1 Other Account with
                             Companies.                Vehicles.                approximately $131 million
                                                                                in total assets under
                                                                                management.
------------------------------------------------------------------------------------------------------------


*As of December 31, 2005.

Compensation:

The following information relates to the compensation of Mr. Hudson for the
period ended December 31, 2005. The base salary for Mr. Hudson is determined by
his experience and performance in his respective roles. Mr. Hudson's base salary
is reviewed annually and may be adjusted based on the recommendation of his
business manager, using guidelines established by Wellington Management's
Compensation Committee, which has final oversight responsibility for base
salaries for employees of Wellington Management. Mr. Hudson is subject to the
above disclosure relating to Investment Professionals of Wellington Management.