Volume 19, 1987

   

COVER

Our cover depicts Erich von Tschermak-Seysenegg (1871-1962), a man , long cited as one of the three rediscoverers of Mendel's work. Recently, however, his claim to a share of the honors along with Correns and De Vries has been challenged (see, for example, Monaghan and Corcos, J. Hered. 77:468-469. 1986.). Nevertheless, Tschermak is amply distinguished on other grounds to warrant a place on our cover. The rendering, by Ms. Elaine Gotham of our Publications staff, is from a photograph which appeared in Genetics, Vol. 37 (January 1952). The photograph was taken at a late stage in Professor Tschermak's life. Accompanying the photograph in Genetics is an account of Tschermak's life and works written by the late George H. Shull, himself a famous geneticist/breeder.

Born in Vienna in 1871, Erich von Tschermak was a member of an intellectually distinguished family. He was the grandson of Eduard Fenzl, a professor of botany under whom Gregor Mendel studied. Tschermak gained considerable experience in practical plant breeding both before and after receiving his Ph.D. at Halle in 1896. In Ghent, in the spring of 1898, he began his studies with the hybridization of garden peas. He continued this work upon returning the next year to Esslingen, near Vienna. A paper summarizing his results was read in January 1900.
Dr. Tschermak experimented with many major crop plants during his professional career, making numerous valuable contributions to breeding and genetics and earning a host of honors and awards. During this time he published important papers relating to the genetics of Pisum (1901, 1902, 1904, 1910, 1912, 1916) including the discovery of several genes.

 

PNL Vol. 19 CONTENTS

Preface

1

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Cover

3

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Research Reports

4

 

 

THE EFFECT OF VARIOUS SUBSTANCES ON IN VITRO ROOTING OF TWO PEA GENOTYPES.
T. Cardi, E. Filippone, and F. Adamo .

4

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CYTOLOGICAL STUDIES ON THE PROGENIES OF TETRAPLOID PLANTS OF PISUM.
C. Conicella and A. Errico.

7

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IMPROVEMENT OF THE SELECTION VALUE OF GENE dgl THROUGH RECOMBINATION.  
 W. G. Gottschalk

9

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BREEDING EARLY-MATURING PROTEIN PEAS.   
S. Hovinen

12

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THE MUTATIONS AFILA AND ACACIA IN CONNECTION WITH A MODEL FOR THE EARLY
PHYLLOMORPHOGENESIS OF PISUM SATIVUM.
H. W. Ingensiep and J. Lenz

15

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MUTANTS DEFECTIVE IN SYMBIOTIC NITROGEN FIXATION.
┬. E. Kneen and T. A. LaRue

17

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SOMATIC EMBRYOGENESIS IN PEA. 
 W. Kysely andH.-J. Jacobsen

18

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COMMENTS ON THE CHROMOSOME MAPS OF PISUM SATIVUM.
R. Lamm  

20

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BASES AND PROPOSALS FOR A MODEL IN CONNECTION WITH THE EARLY
PHYLLOMORPHOGENESIS OF PISUM SATIVUM.  
J. Lenz and H. W. Ingensiep

25

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LOW PENETRANCE AND VARYING EXPRESSIVITY IN A CHLORAMPHENICOL  INDUCED PEA MUTANT.  
W.-E. Loennig

28

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DETERMINATE GROWTH HABIT (det) IN PEAS: ISOLATION, SYMBOLIZATION, AND LINKAGE.  
R. Kh. Makasheva and A. M. Drozd

31

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SINUATE LEAF sil LINKED WITH Wsp.  
G. A. Marx

33

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SUPPLEMENTAL LINKAGE DATA FOR CHROMOSOMES 1 AND 7.
G. A. Marx

35

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ADDITIONAL EVIDENCE PLACING Rb IN CHROMOSOME 3.
G. A. Marx

40

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ON THE GENES FOR RESISTANCE TO FUSARIUM WILT.
F. J. Muehlbauer

41

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LINKAGE DATA FOR dne AND CHROMOSOME 3 MARKERS b AND st.   
I. C. Murfet

45

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A COMPARISON OF THE OPTICAL PROPERTIES OF gp (YELLOW) AND Gp (GREEN) FRUITS.   
D. N. Price, M. E. Donkin, and A. Hull

46

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LIST OF GENES IN PISUM SATIVUM FOR RESISTANCE TO VIRUSES.
R. Provvidenti

48

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OBSERVATIONS ON THE RELATIVE ELECTROPHORETIC MOBILITY OF PISUM SEED AMYLASES.   
J. Przybylska, S. Blixt, Z. Zimniak-Przybylska, and J. George

50

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INTERNODE LENGTH IN PISUM: A FURTHER MUTATION AT THE la LOCUS.  
J. B. Reid

52

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UPDATE, PISUM GERMPLASM AND PEA SEEDBORNE MOSAIC VIRUS IN NORTHERN INDIA,  1987.   
N. Rishi and R.0.Hampton

55

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INTERNODE LENGTH IN PISUM: EFFECT OE THE GENE art (arthritic) .    
R. N. Rothwell and  I. C. Murfet

59

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A SHORT METHOD TO DEMONSTRATE THE LACK OR REDUCTION OF CHLOROPHYLL b
IN DIFFERENT MUTANTS OF PISUM SATIVUM.
R. Schmitz

61

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GENETIC STUDIES OF SEMI DOMINANT MUTATIONS IN PEA.
╩. K. Sidorova and L. P. Uzhintseva

64

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ORANGE COTYLEDONS (Orc) AND ORANGE LEAVES (orl_) : NEW GENES ON CHROMOSOME 1.  
W. ╩. Swiecicki

66

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A SECOND costata GENE lum-2 ON CHROMOSOME. I.
W. K. Swiecicki

70

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DETERMINATE GROWTH (det)  IN PISUM: A NEW MUTANT GENE ON CHROMOSOME 7.  
W. ╩. Swiecicki

72

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GOLD NECROSIS (gn): A NEW GENE ON CHROMOSOME 5.
W. K. Swiecicki

74

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CONFIRMING DATA FOR MAPPING ISOZYMIC LOCUS Aat-p.
W. K. Swiecicki and B. Wolko

76

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LINKAGE RELATIONS OF GENES af-i. ON CHROMOSOME 1 AND curl-tl ON CHROMOSOME 7
IN PEAS (Pisum sativum L.).
I. Trifu

77

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A NEW MUTANT PRODUCING LOBATE LEAFLETS IN PEA (Pisum sativum L.).  
I Trifu

78

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OBSERVATION OF LINKAGE BETWEEN Wsp_ AND THE ISOZYME LOCUS Alat-p.   
N. F. Weeden

80

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Adh-1, A MARKER LOCUS FOR RESISTANCE TO PEA ENATION MOSAIC VIRUS.   
N. F. Weeden and R. Provvidenti

82

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A NEW GENE (1st) WHICH INFLUENCES STANDARD SHAPE IN PISUM SATIVUM.   
P. J. Winfield

84

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SISTER CHROMATID EXCHANGE (SCE) IN PISUM SATIVUM.   
G. Wolff, A. Neumann, and R. Rapp

86

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APPLICATION OF ELECTROPHORETIC METHODS OF ISOZYME SEPARATION TO GENETICAL
CHARACTERIZATION OF PEA CULTIVARS.   
B. Wolko and W. K. Swiecicki

89

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TISSUE CULTURE STUDIES OF NINE PEA CULTIVARS.    S. P. Yenne,
D. C. Thill, D. J. LeTourneau, and D. L. Auld

93

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Features

96

 

 

PISUM RESEARCH IN COLOMBIA.   
E. Girard and M. Lobo

96

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DRY PEA PRODUCTION IN CANADA.   
A. E. Slinkard

97

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Symbols and Type Lines

99

 

 

A MATERNALLY INHERITED GENE FOR CYANIDE RESISTANT RESPIRATION IN PEA.   
M. E. Musgrave, J. N. Sideow, and I. C. Murfet

99

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Varietal Releases 

100

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Errata

101

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