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7th May 2015, Berlin
GMO FREE EUROPE – Workshop: Danube Soya Innovation and Research: Update and future plans
Alena Pfeiffer
UNIVERSITÄT HOHENHEIM
Identification and Characterization of
Mega Environments and Standard
Varieties for Maturity Groups in
European Soybean Breeding Material
June 2013, Breeders workshop, Freising, Germany
Start of the Mega Environmental Trial
identify Mega Environments across Europe
identify Standard Varieties for Maturity Groups
2 replications
2014
75 European soybean
varieties
5 Maturity Groups (MG):
000, 00,0, I, II
Originally 34 locations of
13 countries
Megaenvironmental
Trial
Megaenvironmental
Trial
2014
75 European soybean
varieties
5 Maturity Groups (MG):
000, 00,0, I, II
Originally 34 locations of
13 countries
2 replications
locations without
data
eaten by
rabbits, not
conducted,……
23 locations
remained in
analysis
Data Evaluation
Weekly survey of growth
stage
BBCH vs. Fehr and
Caviness
Most important stages:
Flowering
Maturity
In weeks after sowing
11.06.2015
Flowering: BBCH 65 or R2 Maturity: BBCH 89 or R8
Data Analysis
ASReml BLUEs of single locations
BLUEs across locations
Identification of Mega Environments (ME)
correlation of locations based on BLUEs, correlation based on 1/0
(1 = Genotype matured, 0 = Genotype failed) and phenotypic
distance of the locations
Identification of Standard Varieties
Three stability parameters: environmental variance (s2), ecovalence
(Wi) (Wricke, 1962) and phenotypic stability parameter bi (Eberhart
and Russell, 1966) Growth development
Development of Standard varieties at each ME graphically
visualized
Area reached from 54.1 ° to 43.7 ° latitude
10 ° latitude difference, ~ 4 weeks difference in maturity
Results
Groß-Lüsewitz, Germany
54.1 °
Fundulea, Romania
44.45 °
= small distance
high similarity
= far distance
Phenotypic distance
for Maturity
ME 1
ME 2
ME 4
ME 3
ME 5
Results
MG 000-00
MG 000-0
MG 000-II
MG 000-0
MG 000-II
54 - 51 °
48.7 - 48.2 °
48.2 - 46.4 °
46.9 - 45.5 °
46.1 - 43.7 °
Results
Lissa
bo
n
Am
and
in
e
Ba
hia
Sig
alia
Jo
se
fin
e
An
a
Ru
zic
a
Isid
or
Bu
en
os
Luna
Stability
parameters
environmental
variance s²,
ecovalence Wi (Wricke, 1962)
phenotypic
stability
parameter bi (Eberhart and
Russell, 1966)
Results
Lissabon
000
Sigalia
00
Bahia
0
Ruzica
I
Buenos
II
ME 1 21.3 (21)
ME 2 21.1 (21.3) 22.1 (22.7) 22.8 (23.2)
ME 3 18.1 (18.5) 19.6 (20.0) 20.7 (21.2) 21.3 (21.9) 22.5 (22.4)
ME 4 18.7 (18.6) 19.3 (19.6) 20.3 (20.6)
ME 5 16.7 (16.8) 17.5 (17.5) 18.1 (18.1) 19.1 (19) 19.4 (19.5)
Maturity in weeks after sowing for each Standard Variety in each
Mega Environment ME. Means of MG in ME in brackets.
Results
Maturity
R8
Flowering
R2
Maturity is more influenced by temperature
Flowering is more influenced by photoperiod
Results
Maturity is more influenced by temperature
Flowering is more influenced by photoperiod Effects are stronger for later MG‘s
Results
Summary & Conclusion
Biogeographic regions influence the Mega Environments
For Map construction more locations needed
Either MEV Trial again OR
collecting data from regional field trials
Standard Varieties for each MG identified
Checks for field and breeding trials
BUT: No statement about best adapted MG in which ME
Yield data needed
E1-E4 genes of 75 varieties will be analyzed
all developmental stages important
Thanks
Alfred Sandmayer, Donau Soja
Dr. Volker Hahn, State Plant Breeding Institute Hohenheim
PD. Tobias Würschum, State Plant Breeding Institute
Hohenheim
All Participants !!!