PGA

Pisum Genetics Association PISUM GENETICS
The Pisum NewsLetter till 1990


            
Volume 20, 1988              
Published by PGA since 1969

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COVER

 

We are indebted to Dr. Peter Matthews and P. Linstead of the John Innes Institute, Norwich, U.K., for the SEM microphotographs showing pat­tern variation of the seed surface (See cover). The following background information was provided by the researchers.
The photos are part of a general SEM survey of seed samples contained in the John Innes Germplasm Collection. In a preliminary survey, twenty-six accessions were selected to represent the widest possible range of plant types within the genus. The survey has re­vealed a great wealth of variation as yet undescri'bed. Included in the study were accessions of various taxa, wild and domesticated, from Af­ghanistan, the Balkans, Bolivia, the Caucasus, Mongolia, Pakistan, Syria, and Turkey, including tragacanth secreting lines and commercial cultivars.
The testa shows a repeating pattern of hexagonal units which are presumed to be derived from chitin excrescences originating from the epidermal cells of the testa. The patterns created are distinctive for taxa designated fulvum, abyssinicum, elatius and sativum. Also, within P. sativum there is apparently much variation. Testae of elatius reveal details of expression of the gene Gty which determines the "gritty" phenotype.
Testa topography, as revealed in these SEM photographs, shows a strong affinity with that found in Vicia. The significance of this variation remains obscure.

 

 

TABLE OF CONTENTS i   HTML    PDF 
Preface   1   HTML PDF
Cover   2   HTML PDF
Research Reports   3   

MORE ON THE PEA'S NECTARIES AND INSECT VISITORS.  S. L. Clement, L. A. Lathrop, and F. J. Muehlbauer

  3  HTML PDF

CYTOLOGICAL EVIDENCE FOR BIPARENTAL TRANSMISSION OF PLASTID DNA IN PISUM SATIVUM.  
J. L. Corriveau, A. W.Coleman, and
N. 0. Polans

5  HTML PDF

NEW CHLOROTICA GENE (chi 32) IN CHROMOSOME 3.
St. Czerwinska

9  HTML PDF

A SCAFFOLD FOR A NEW LINKAGE GROUP (VII).
D. Folkeson

10  HTML PDF

TETRAPLOIDY FOLLOWING X-IRRADIATION. 
W. Gottschalk

14  HTML PDF

ELECTROPHORETIC ANALYSIS OF FIELD PEA CULTIVARS.  
A. Hussain,
S. T. Ali-Khan, and W. Bushuk

16  HTML PDF

YIELD COMPONENTS AND THEIR INFLUENCE ON YIELD IN A BASIC COLLECTION FOR DRIED PEA BREEDING.
H. Jaiser

18  HTML PDF

IMPROVING RESISTANCE TO APHANOMYCES ROOT ROT IN PEAS VIA RECURRENT SELECTION.  
M. E. Lewis and E. T. Gritton

20  HTML PDF

ANOTHER CASE OF RECESSIVE INHERITANCE OF YELLOW COTYLEDON COLOR.  
G. A. Marx

21  HTML PDF

THE ISOLATION OF TWO CHLOROPHYLL MUTANTS, EACH EXPRESSING AS A COTYLEDON CHARACTER. 
G. A. Marx

24  HTML PDF

A HERITABLE FACTOR ON CHROMOSOME 6 AFFECTING SEED COAT BRIGHTNESS.  
G. A. Marx

25  HTML PDF

TRANSFORMATIONS OF MALE REPRODUCTIVE ORGANS INTO FEMALE ORGANS AND FEMALE STERILITY IN COCHLEATA MUTANTS OF PISUM SATIVUM
E. Molchova, M. Vassileva, and M. Micailova

26  HTML PDF

INTERNODE LENGTH IN PISUM; EFFECT OF THE crys/cryc DIFFERENCE ON RESPONSE TO A DAYLENGTH EXTENSION WITH INCANDESCENT LIGHT. 
I.C. Murfet

28  HTML PDF

LINKAGE RELATIONSHIP OF PISUM GENES st, m,  AND hr.
I. C. Murfet

29  HTML PDF

SOURCES OF RESISTANCE TO PATHOTYPES OF PEA SEED-BORNE MOSAIC VIRUS IN THE  U.S.  PLANT INTRODUCTIONS OF PISUM SATIVUM.
R. Provvidenti and R. Alconero

30  HTML PDF

AN ANLYSIS OF THE SYMBIOTIC PROPERTIES OF PEA MUTANTS.
K. K. Sidorova and S. N. Stolyarova

32  HTML PDF

SUPPLEMENTAL MAPPING DATA FOR CHROMOSOME 6.  
A. Skarzynska

34  HTML PDF

A THIRD COSTATA GENE (Ium-3) ON CHROMOSOME 5. 
W. K. Swiecicki

36  HTML PDF

RUINOUS (rui): NEW COMPLEX, STERILE GENE.  
W. K. Swiecicki.

38  HTML PDF

GENETICS OF EARLY FLOWERING PEA MUTANTS.  
L. P. Uzhintseva and
K. K. Sidorova

39  HTML PDF

BREEDING PROGRAMS FOR DISEASE RESISTANCE UNDERWAY AT THE FOUNDATION FOR AGRICULTURAL PLANT BREEDING (SVP), WAGENINGEN, THE NETHERLANDS.
 
J.J.A. van Loon, J.-L. Harrewijn, N. van Dijk, and A. van Norel

40  HTML PDF

LINKAGE BETWEEN Tpi-p AND Le. 
N. F. Weeden and D. M. Hagens

42  HTML PDF

A SUGGESTION FOR THE NOMENCLATURE OF ISOZYME LOCI. 
N. F. Weeden

44  HTML PDF

POLYMORPHIC ISOZYME LOCI IDENTIFIED IN PISUM.  
N. F. Weeden

46  HTML PDF

MAPPING OF THE Sn LOCUS TO CHROMOSOME 2.  
N. F. Weeden,
B. E. Kneen, and I.C. Muriet

49  HTML PDF

LINKAGE BETWEEN Dia-1 AND LOCI ON CHROMOSOME 3.  
B. Wolko
and N. F. Weeden

52  HTML PDF

Feachure

54    

DEVELOPMENTS IN FIELD PEAS IN VICTORIA, AUSTRALIA
J. B. Brouwer

54  HTML PDF

Announcements

57    

PROCEDURES  FOR  REGISTRATION  OF  FIELD  PEA CULTIVARS   IN CANADA
S.   T.   Ali-Khan

57  HTML PDF

IBPGR/FAO AGREEMENT.  
W. K. Swiecicki and K. Leraczyk

57  HTML PDF

Germplasm Releases

58    

RELEASE OF PEA BREEDING LINES 86-638, 86-2197, AND 86-2236.
J. M. Kralt

58 HTML PDF

New Cultivars

59 HTML PDF
Index 60 HTML PDF