TABLE OF CONTENTS

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Pisum Genetics Association Notes .......................................................................................................................................iii

Research Papers

Two simultaneously induced lethal mutations provide a system for automatic reproduction
of a heterozygote for the Hammarlund translocation
V.A. Berdnikov, F.L. Gorel and O.E. Kosterin..................................................................1

A new xantha-type mutation golden (gld) on the short arm of chromosome 5
F.L. Gorel, O.E. Kosterin and V.A. Berdnikov..................................................................5

A floral homeiotic mutation affecting B function of florogenesis control in the pea
O.E. Kosterin......................................................................................................................9

EMS-induced lethal in the vicinity of the locus lf
O.E. Kosterin, V.A. Berdnikov and F.L. Gorel................................................................11

Location of the breakpoints of four reciprocal translocations involving linkage group V
and their influence on recombination distances between neighboring markers
O.E. Kosterin, N.V. Pukhnacheva, F.L. Gorel and V.A. Berdnikov.................................13

Stem strength in the core collection of Pisum germplasm
K.E. McPhee and F.J. Muehlbauer.................................................................................21

Induced mutations and their application in genetic improvement of pea
A. Mehandjiev, S. Noveva and G. Kosturkova...............................................................24

Identification of AFLP markers for the powdery mildew resistance gene er2 in pea
K.R. Tiwari, G.A. Penner and T.D. Warkentin.............................................................27

Mapping coding sequences in pea by PCR
N.F. Weeden, M. Tonguc and W.E. Boone....................................................................30

Brief Communications

Equations for estimation of recombination fraction between a marker and a sporophytic
lethal in F2 progenies with the maximum likelihood method
O.E. Kosterin, V.A. Berdnikov and F.L. Gorel..............................................................33

Equations for estimation of recombination fraction between a marker and a translocation
breakpoint
O.E. Kosterin, N.V. Pukhnacheva, F.L. Gorel and V.A. Berdnikov................................33

A study of supernodulation pea mutants
K.K. Sidorova, E.Yu. Vlasova, T.I. Mishchenko, M.N. Glianenko
and V.K. Shumny............................................................................................................34

Locus Wsp is on Linkage Group IV near Age
N.F. Weeden...................................................................................................................35

Mapping the Rb locus on linkage group III using long PCR followed
by endonuclease digestion
N.F. Weeden and W.E. Boone.......................................................................................36

Hop1, encoding a homeodomain-containing transcription factor, is located near Prx3
on linkage group VI
N.F. Weeden and D.A. DeMason...................................................................................37

Screening of garden pea varieties by their resistance to cadmium and accumulation
of heavy metals
A.A. Belimov, V.I. Safronova, V.E. Tsyganov, A.Y. Borisov, I.A. Tikhonovich,
V.N. Soboleva, N.A. Kvokova, L.N. Zaitseva, O.N. Poddubnykh, L.N.
Dolgaya and P.A. Sukhanov...........................................................................................39

Genetic system controlling development of nitrogen-fixing nodules
and arbuscular mycorrhiza
A.Y. Borisov, L.M. Jacobi, V.K. Lebsky, E.V. Morzhina, V.E. Tsyganov,
V.A. Voroshilova and I.A. Tikhonovich.........................................................................40

Genetic variability of garden pea (Pisum sativum L.) for symbiotic capacities
L.M. Jacobi, A.S. Kukalev, K.V. Ushakov, V.E. Tsyganov, N.A. Provorov,
A.Y. Borisov and I. Tikhonovich....................................................................................44

The use of mini and twin plants for the genetic analysis of symbiotic variation
of Pisum sativum L. towards Rhizobium leguminosarum strains
T.A. Lie and Y. Hartati..................................................................................................46

Role of phytohormones in pea-rhizobia and pea-agrobacteria interactions
L.A. Lutova and Z.B. Pavlova........................................................................................48

Pea breeding to improve effectiveness of symbiotic nitrogen fixation
T. Naumkina, V. Yakovlev, T. Titenok, A. Vasilchikov, V. Orlov, A. Borisov
and O. Kulikova.............................................................................................................50

Basic mechanisms in the interaction between micro- and macrosymbiont
in the Rhizobium leguminosarum/pea symbiosis: the bacterial side
U.B. Priefer....................................................................................................................51

Genetic diversity in pea germplasm from Vavilov Institute and ICARDA collections
for black spot resistance and agronomic merit
L. Priliouk, L. Robertson, C. Francis, T. Khan, D. Gorfu and G. Bejiga....................53

Breeding for high efficiency in Pisum sativum/Rhizobium leguminosarum symbiosis
N.A. Provorov, I.A. Tikhonovich and A.P. Kozhemyakov............................................54

The history of the pea gene map: last revolutions and the new symbiotic genes
S.M. Rozov, O. Kosterin, A.Y. Borisov and V. Tsyganov.............................................55

Symbiotic diversity of Pisum sativum L. ecotype humile and the associated
Rhizobium leguminosarum strains
A. Tempelman-Bobbink, T.A. Lie and K.D. Yami........................................................57

Exploring host:virus interactions using pea seed borne mosaic virus (PSbMV) and pea
C.L. Thomas, S. Harrison, A.-L. Jones, F. Revers and A.J. Maule.............................59

Pisum Genetics Association Membership List..............................................................60

Pisum Genetics Volume 31 (1999)
ISSN 1320-2510
Editor: Dr. N.F. Weeden
Published by the Pisum Genetics Association.
Printed at the College of Agriculture,
Montana State University,
Bozeman, Montana, USA

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