Maro Sondahl from 6 Edinburgh Ln, Mount Laurel, NJ 08054, Phone: 8567274880

Controlled Regeneration Of Zea Diploperennis Hybrids And Breeding Strategies Therewith
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US Patent:

48106496, Mar 7, 1989
Filed:

Feb 11, 1987
Appl. No.:

7/013403
Inventors:

Maro R. Sondahl - Cherry Hill NJ
David A. Evans - Palmyra NJ
Laudenir Prioli - Delran NJ
Assignee:

DNA Plant Technology Corporation - Cinnaminson NJ
International Classification:

C12N 500
US Classification:

43524049
Abstract:

This invention provides a method for high frequency plant regeneration from somatic stem donor tissue of field grown Zea diploperennis, a diploid, perennial corn ancestor with high tillering capacity. This species is used as a parent in a maize improvement strategy to transfer the unique traits of high tillering and plantlet regeneration capacity into cultivated corn. After 3-4 subcultures of cultured somatic tissues on a primary medium, small callus fragments are transferred to a secondary medium devoid of the auxin, 2,4-D. After a few days, numerous shoots regenerate and develop into normal plantlets which are then separated and transferred to a tertiary medium for root development. The selection of somaclonal variants form cultured somatic cells of interspecific hybrids between corn and teosinte are used for the synthesis of unique breeding lines suited for development of improved corn varieties. A protocol for gene transfer employing recombinant DNA techniques is also described.

High Yield Sweet Corn Hybrid
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US Patent:

51966360, Mar 23, 1993
Filed:

Jul 21, 1988
Appl. No.:

7/222474
Inventors:

Maro R. Sondahl - Cherry Hill NJ
William J. Da Silva - Campinas, BR
Tharcizio C. De Almeida - Riberao Preto, BR
Assignee:

DNA Plant Technology Corporation - Cinnaminson NJ
International Classification:

A01H 500
A01H 100
US Classification:

800205
Abstract:

The present invention relates to novel sweet or supersweet corn hybrids with improved yield and germination characteristics. The hybrids of the present invention are produced by crossing flint and dent field corn parents.

Induction And Selection Of Somaclonal Variation In Coffee
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US Patent:

54363950, Jul 25, 1995
Filed:

Jun 30, 1994
Appl. No.:

8/269964
Inventors:

Maro R. Sondahl - Cherry Hill NJ
William R. Romig - Moorestown NJ
Alvina Bragin - Cherry Hill NJ
Assignee:

Kraft Foods, Inc. - Northfield IL
International Classification:

A01H 500
US Classification:

800230
Abstract:

This invention relates to somaclonal variants from different varieties of coffee plants. The invention also contemplates methods for the high frequency generation of and the low frequency generation of said somaclonal variants in coffee plants, thereby providing variants with improved processing and agronomic characteristics. Among these somaclonal variants are high-yielding, low caffeine Coffea arabica cv. Laurina somaclones and a method for producing same. In particular, this invention relates to the unique application of tissue culture methodology as new methods for variety development, breeding and then the scale-up of the selected superior genotypes of coffee plants for the commercial production of coffee.

Maro Sondahl