| TI: |
Title
Genetic relationships among soybean plant introductions with resistance
to soybean cyst nematodes |
| AU: |
Author
Diers, BW; Skorupska, HT; Rao-Arelli, AP; Cianzio, SR |
| AF: |
Author Affiliation
B.W. Diers, Dep. of Crop/Soil Sciences, Michigan State Univ.,
East Lansing, MI 48824, United States. Email: diers@pilot.msu.edu
|
| SO: |
Source
Crop Science, 37 (6) pp. 1966-1972, 1997 |
| IS: |
ISSN
0011-183X |
| CD: |
CODEN
CRPSA |
| NT: |
Notes
36 refs. |
| AB: |
Abstract
Soybean [Glycine max (L.) Merr.] cultivars in the USA, which are
resistant to soybean cyst nematode (SCN) (Heterodera glycines
Ichinohe), have resistance derived from only a few plant introductions
(PIs). many other SCN resistant PIs have been identified which
could be used as sources for broadening the diversity of resistance
genes in cultivars. The objectives of this research were to study
the relationship among PIs with SCN resistance using restriction
fragment length polymorphism (RFLP) markers and to assess their
resistance response to five races of H. glycines. Thirty-eight
PIs previously reported as being resistant to one or more SCN
races were evaluated for resistance to H. glycines Races 1, 2,
3, 5, and 14 in a greenhouse and were tested with 201 genomic
DNA clones. PI 437654 and PI 438489B were resistant to all five
SCN races. Four PIs were resistant to four SCN races, nine resistant
to three races, four resistant to two races, four resistant to
one race and the remainder had only moderate resistance or moderate
susceptibility to one or more races. The PIs were polymorphic
for 138 clones which revealed 301 polymorphic DNA fragments. The
groupings of the PIs for both cluster analysis and principal component
analysis (PCA) were associated with resistance responses to races
of H. glycines. One major of PIs was distant from all previously
used sources of resistance. These PIs had only moderate resistance
to Race 3 but could potentially provide new genes for resistance
to this race. The other PIs were in groups that included PIs with
resistance sources previously used by breeders. This information
on the relationship of the PIs should help researchers developing
resistant soybean cultivars to identify sources of SCN resistance
which are not closely related to previously used sources. |
| LA: |
Language
English |
| SL: |
Summary Language
English |
| PY: |
Publication Year
1997 |
| PT: |
Publication Type
Journal; Article |
| CP: |
Country of Publication
United States |
| CL: |
Classification
92.10.4.8 CROP SCIENCE: Crop Protection: Plant resistance; 92.11.1.7
PLANT PATHOLOGY AND SYMBIOSES: Plant Pathology: Nematodes |
| SF: |
Subfile Name
Plant Science |
| AN: |
Accession Number
1998015021 |
