Report of the Tomato Genetics Cooperative, Vol. 6

                                

Cover 0

Forword 1

Coordinated study of tomato linkage groups 3

Variations in total titratable acid content of fruits of tomato strains. Anderson, R. E. and A. E. Thompson.

Root knot nematode resistant line. Barham, Warren S. and J. N. Sasser.

Description and linkage relations of ghost (gh) -- an unstable chlorophil deficiency. Brauer, O. and C. M. Rick.

Evidence on the genetic and cytological make-up of chromosome 7 in the tomato. Burdick, A. B.

Irradiation induced genetic instabilities. Burdick, A. B.

Mutagenic effect of thermal neutrons on wet- and dry-treated tomato seed. Burdick, A. B.

Tomato improvement by irradiation. Burdick, A. B.

The importance of genetic background in the study of mutant characters. Butler, L.

Dihybrid F2 segregations for genes in linkage group VI & VII. Butler, L.

Results of linkage tests with the green stripe mutant. Butler, L.

Race names of Cladosporium fulvum. Day, P.

Eine einfache Methode zur Erzeugung polyploider Pollenmutterzellen. Gottschalk, W.

Die Erzeugung tetraploider Tomaten durch Keimung der Samen auf Colchicin-Agar. Gottschalk, W.

Die Koordinierung der Nomenklaturesysteme von Barton und Gottschalk fur die Pachytanchromosomen von Lycopercion esculentum. Gottschalk, W.

Genetic differences in pollen production, germination and growth. Hornby, C. A. and H. A. Daubeny.

Carotenoids of the triple recessive, yellow-tangerine-apricot. Jenkins, J. A. and G. Mackinney.

Green flesh, gf. Kerr, E. A.

Lutescent - 2, l\2. Kerr, E. A.

Pigment genes of Webb Special. Kerr, E. A.

A virescent tangerine mutant in R2 from seed treatment with radioactive isotope P32. Lesley, J. W. and M. M. Lesley.

Results of inbreeding a plant with one ring of four chromosomes, derived from a seed germinated in P32 solution. Lesley, M. M. and J. W. Lesley.

Inheritance of lanceolate, a new leaf-shape mutant. (submitted by J. A. Jenkins) Mathan, D.

Mutations in L. escelentum and L. pimpinelifolium produced by thermal neutron and X-irradiation of seed. Murtens, T. R.

Phenotypic stability of heterozygotes for induced chlorophyll mutations. Mertens, T. R.

Selection for combining ability in a male sterile line having two seedling recessives. Nickelson, R. L. and T. M. Currence.

Exserted, ex\1? Pollack, B. L.

Origin of the Webb Special (Black Queen) tomato. Reynard, G. B.

New mutants. Rick, C. M.

A new jointless gene from the Galapagos L. pimpinellifolium. Rick, C. M.

L. Cheesmanii. Rick, C. M.

The j-wt linkage situation. Rick, C. M.

The linkage relations of ag. Rick, C. M.

Two new male-sterile mutants in the variety Earlypak. Rick, C. M.

Linkage summary. Rick, C. M. and L. Butler.

High rates of cross-pollination of tomato in Puerto Rico. Sawant, A. C.

Reciprocal differences in botanical varietal crosses of Lycopersicon hirstum. Sawant, A. C.

A new pigment system. Soost, R. K.

Another virescent mutant. Soost, R. K.

Another high beta-carotene line. Soost, R. K.

Tomatenmutanten in Gatersleben. Stubbe, H.

Further information on the inheritance of high total carotenoid pigment production of the variety Webb Special. Thompson, A. E.

Inheritance of albescent (ab), a new chlorophyll-deficient mutant. Thompson, A. E.

Pigmented anthers found in L. peruvianum. Thompson, A. E.

Carotenoid pigment production of fruits of (ab), a new chlorophyll-deficient mutant. Thompson, A. E. and J. P. McCollum.

ry, a modifier gene for red color in yellow tomato fruits. Young, P. A.

Tomato fruits with exserted carpels. Young, P. A.

Directory of members 35

List of available or desired stocks 42

Bibliography of papers on tomato genetics and breeding published in 1954 50

Financial statement 55