REPORT

of the

TOMATO GENETICS COOPERATIVE

Number 32       April 1982

Department of Horticulture

Purdue University

West Lafayette, IN 47907

                                                             Contents

                                                                                                                                    Page

Foreword                                                                                            

History                                                                                                                         1

Part I    Stock List                                                                                                         3

Part II  Research Notes                                                                                                11

            Anand, N. and S.K. Tikoo

            Relationship of stigma position with fruit-set, shape and yield in tomato.             11

            Avdeyev, Y.I. and B.M. Shcherbinin

            Linkage relation of Ora-gene for resistance to Orobanche aegyptiaca.               12

            Brock, R.D.

            Attempted gene transfer in tomato via irradiated pollen.                                     12

            Corneanu, G.C., C. Craciun and D. Anton

            Pleiotropic action of nv gene in tomato.                                                              13

            Cuartero, J., G. Palomares, S. Balasch, and F. Nuez.

            Sequential data analysis for combining ability.                                                    15

            Hanson, M.R.

            Regeneration of tomato plants in vitro from leaf and hypocotyl explants.             15

            Kerr, E.A.

            New residents on Chromosome 1: rvt, vi, lg, pe, dp, Nr-2, tmf, cjf.                16

            Kerr, E.A.

            Three-point tests for some of the genes newly assigned to Chromosome 1.        18

            Kerr, E.A.

            Linkage studies with Green ripe- Gr.                                                                18

            Kerr, E.A.

            Further studies of genes for resistance to Cladosporium fulvum.                      19

            Kerr, E.A.

            Two-and three-point tests with hy and nor on Chromosome 10.                       19

            Kerr, E.A.

            Two- and three-point tests with auv on Chromosome 10.                                20

            Kerr, E.A.

            Three-point test of sherry - sh on Chromosome 10.                                          21

            Kerr, E.A.

            Linkage tests with finely- netted-fn are mostly negative.                                    21

            Kerr, E.A.

            Suggestions of linkage with fusiformis fu.                                                          22

            Kerr, E.A.

            Search for linkage with grotesque- gq.                                                             23

            Kerr, E.A.

            The search continues for the home of gracilis-gra.                                            24

            Kerr, E.A.

            Location of incurva inc still questionable.                                                        25

            Kerr, E.A.

            Linkage tests with slender stem - sr.                                                               27

            Kerr, E.A.

            Further data on tiny (ti).                                                                                 27

            Kerr, E.A.

            Uniform green - uf is still without a home.                                                        28

            Kerr, E.A.

            Aerial roots.                                                                                                  29

            Kerr, E.A.

            Hunt continues for the home of virescent orange (vo).                                    29

            Kerr, E.A.

            Single flower truss- sft appears to be on Chromosome 3.                               31

            Kerr, E.A.

            Pale dwarf (pdw) a new mutation on Chromosome 7.                                    31

            Kerr, E.A.          

            Reduced, rd, a mutant with small size.                                                           32

            Kerr, E.A.      

            Never ripe - 2 (Nr-2) a slow ripening mutant resembling Nr and Gr.              33

            Kerr, E.A.

            Stunted - stu: another small plant mutation possibly on Chromosome 5.         33

            Kerr, E.A. and L.G. vanden Berkmortel     

            Upright leaf - ul.                                                                                            34

            Kerr, E.A.

            Upright growth (up) and aerial roots-2 (aer-2)-

            two new genes from White Beauty.                                                               34

            Lesley, J. W., and G. L. Henning

            Gibberellin and aminoethoxyvinyl glycine fail to restore fertility to

            msl4, ms26, and ms40, male-sterile mutants of the tomato.                             35

            Lin, S., W. L. George and W. E. Splittstoesser.

            Parthenocarpy and the ability to set fruit under high temperature conditions.    35

            Lobo, Mario, J. J. Augustine, and L.C. Hannah     

            Nor^A, a new allele at the nor locus.                                                                37

            McGlasson, W.B., C.J. Brady and J.M. Speirs

            Genetic regulation of ripening and quality in Lycopersicon esculentum Mill.    39

            Palomares, G., J. Cuartero, S. Balasch and F. Nuez

            Interactions genotype x environment for tomato fruit cracking.                        39

            Patterson, BD.

            Direct selection for chilling-resistance in progeny of

            L.esculentum x L. hirsutum.                                                                        40

            Persiel, F. and R. Reimann-Philipp  

            Necrosis in tomato produced by the factor for resistance to

            Cladosporium fulvum Cf-2 and its suppression by Ne.                                40

            Pilowsky, M. and D. Zutra

            Evidence for the presence of different genes for resistance to

            Pseudomonas tomato in Lycopersicon esculentum cv. Ontario7710

            and in L. pimpinellifolium accession P.1. 126430.                                        42

            Rao, R.N. and P.N. Rao

            Evidence of cryptic structural hybridity in tomato hybrids.                               43

            Rick, C.M.

            A new self-compatible wild population of L. peruvianum.                             43

            Robinson, R.W. and J.E. Hunter

            Mutations inhibiting fruit skin pigment influence susceptibility to early blight.     44

            Scott, J.W.

            A frost tolerant tomato.                                                                                45

            Sherman, N. and R.W. Robinson         

            Cytoplasmic inheritance of chlorophyll variegation in‘Glamour’ tomato.         45

            Stamova, L. and M. Yordanov

            Resistance to races 2, 3, 4 and 5 of Cladosporium fulvum in S. pennellii.   46

            Tarrega, J. and F. Nuez    

            Chemical treatments of emasculation for producing hybrid seed in tomato       47

            Tarrega, J. and F. Nuez

            Relationships between precocity indexes and yield in tomato.                         47

            Tarrega, J. and F. Nuez

            Effectiveness of different pollination techniques.                                            48

            Tikoo, S.K. and N. Anand

            Stable phenotypic expression of stigma position in tomato.                            48

            Valkova-Achkova, Z.

            Use of BC₁ hybrids for overcoming of incrossabi1ity of

            some species of the genus Lycopersicon Mill.                                            50

            Valkova-Achkova, Z., H. Tchalakova and D. Baralieva.

            Manifestastion of the modificator mo^B+ in the hybrids

            L. escu1entum Mill. x L.. pimpinellifolium f. galapagos Rick

            and L. esculentum x L. chilense Dun.                                                        51

Part III Financial Statement and Membership Status                                                      52

APPENDIX A:            Interim Report of the Committee on Varietal Pedigrees              53

Announcement                                                                                                              59