This document summarizes breeding efforts to develop wheat germplasm with enhanced zinc and iron concentration. [1] The first international wheat yield trial identified lines with 50-100% of the zinc concentration target and some lines outyielding checks. [2] The lines showed high heritability for zinc and iron concentration across locations, indicating potential for widespread cultivation. [3] Positive correlations were found between zinc and iron concentration, grain yield, and protein content, demonstrating the lines possess both nutritional and agronomic advantages.
Improved rice establishment and productivity in Cambodiaand AustraliaACIAR
Rice-based Systems Research: Regional Technical Workshop June 2012 Australian Centre for International Agricultural Research (ACIAR)
Som Bunna CARDI on behalf of project team
Improved rice establishment and productivity in Cambodiaand AustraliaACIAR
Rice-based Systems Research: Regional Technical Workshop June 2012 Australian Centre for International Agricultural Research (ACIAR)
Som Bunna CARDI on behalf of project team
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¿Trabajas con Excels para gestionar las ofertas que publicas y los candidatos que recibes? ¿Compartes el proceso con tu equipo a través de emails personales y con notas en papel? Entonces, déjanos decirte que estás frenando tu gran potencial como reclutador.
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Cartões producidos pela Semlex: cartões nacionais de identidade, cartas de condução, cartões de trabalho, cartões militares, cartoes de polícia,...
semlex.com/pt
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Mejora tus procesos de selección: recluta mejor y más rápido. Pide una Demostración de Talent Clue, el software que te permitirá dejar para siempre los Excels: http://welcome.talentclue.com/demo-webinar-abandona-excel
¿Trabajas con Excels para gestionar las ofertas que publicas y los candidatos que recibes? ¿Compartes el proceso con tu equipo a través de emails personales y con notas en papel? Entonces, déjanos decirte que estás frenando tu gran potencial como reclutador.
Pero tenemos el webinar para ti: te ayudaremos a ahorrar el tiempo que pierdes reclutando en Excel y te enseñaremos a automatizar tareas para que puedas reclutar mejor y de forma más rápida.
Ven con nosotros al webinar y podrás:
.- Convencerte de que la era de los Excels acabó
.- Descubrir cómo automatizar tareas que te restan demasiado tiempo
.- Gestionar mejor tus procesos con la herramienta adecuada
.- Multiplicar tu potencial como reclutador
Should we have a pedagogy of technology?Ashley Casey
In this paper I argue for the need to develop a pedagogy of technology that encourages us to use all technology only as a means of educating children and young people for the 21st Century.
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Abdullah Al Mahmud
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http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
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2024.06.01 Introducing a competency framework for languag learning materials ...
Breeding for enhanced Zinc and Iron concentration in CIMMYT spring wheat germplasm
1. Breeding for enhanced Zinc and Iron
concentration in CIMMYT spring wheat
germplasm
Govindan Velu
Global Wheat Program, International Maize and
Wheat Improvement Center (CIMMYT)- Mexico
E-mail: velu@cgiar.org
MAZATLAN, JUNE 15, 2012
3. HarvestPlus Impact & Product Pathway
Discovery
HPlus I
2004-2008
Product Development
and Delivery Plan
Development
HPlus II
2009-2013
Delivery
HPlus III
2014+
8. Performance of 1st HarvestPlus International Wheat Yield
Trial in target environments for Zn, 2010-11
50
Mexico
45 50% breeding Pakistan
40 target
India
35
Pooled
30
100%
25 breeding
20 target
%
n
e
s
r
t
i
15
10
5
0
0 1-2 3-4 5-6 7-8
Zn concentration (ppm) above the checks
• >40% entries had atleast 50% target Zn (4 ppm) & 5-10% entries had
full target Zn (8 ppm).
• high heritability (0.7) and high genetic correlations between locations
suggests low G x E.
9. Grain yield potential of 1st HPYT
across locations
30
% of 3 checks mean
25 % of local check
20
15
%
n
e
E
s
r
t
i
10
5
0
<80 81-85 86-90 91-95 96-100 101-105 106-110
Grain yield (% over check)
• 2-3 best leads were identified in India & Pakistan with 75-100%
target Zn & better grain yield potential, rust resistance and
superior end-use quality.
• These leads are being evaluated in regional PVS/on-farm trials
14. 50
Associations y = 1.1761x
R² = 0.59
40
30
m
G
p
o
F
n
c
e
a
r
)
(
t
i
20
20 25 30 35 40
Grain Zn concentration (ppm)
40
Zn y = 1.3384x + 15.704
concentration R² = 0.2491
35 (ppm)
30
25
20
10.0 11.0 12.0 13.0 14.0 15.0
Protein %
15. 170
y = 31.918x
160 R² = 0.06
150
-1)
140 Positive association of
130 Zn/Fe yield with grain
120 yield
Z
h
k
d
n
a
g
y
e
(
l
i
110
100
3.0 3.5 4.0 4.5 5.0
Grain yield (tons ha-1)
200
y = 37.645x
190
R² = 0.33
180
170
-1)
160
150
140
130
F
h
k
d
a
g
y
e
(
l
i
120
110
100
3.0 3.5 4.0 4.5 5.0
Grain yield (tons ha-1)
16. Zn ppm Fe ppm GY PH
XRF- ICP- XRF- ICP- % Zn and Fe
t/ha cm
CIM WAS CIM WAS checks concentration of
Mean 33.9 41.1 31.0 31.7 6.8 101 102 Candidate lines
Min 22.9 29.3 23.5 27.5 6.3 96 79
(C2HPYT) Y10-11
Max 65.4 58.7 41.2 37.6 7.5 114 116
SE 0.37 0.4 0.14 0.12 0.27 0.19 0.37
60
N =420 Zn ppm
50
Fe ppm
40
30
%
n
e
s
r
t
20
i
10
0
25 30 35 40 45 50 >55
Zn and Fe concentration, ppm
17. Special emphasize on rust resistance
• Luckily some of the 1st HPYT
best bets possess Ug99
resistance
• 2nd HPYT entries were selected
considering Ug 99 data
Singh et al.,
2011
18.
19. R² = 0.7367
60
50
40
30
M
20
R
X
n
C
Y
T
Z
F
)
(
I
10
0
0 10 20 30 40 50 60 70
ICP Zn (WAS)
50
45 R² = 0.684 N >200 samples
40 Correlation b/n ICP
Sets No of samples
& XRF (r2)
35 Set 1 570 0.9
30 Set 2 800 0.8
M
R
X
C
Y
e
T
F
Set 3 1204 0.7
)
(
I
25
Set 4 180 0.7
20 Set 5 140 0.6
15 Total 2894
15 20 25 30 35 40 45
ICP Fe (WAS)
22. Product Testing & Release Schedule
Positive correlation between Fe and Zn - range for
crops: r = 0.3 to 0.8 - allows simultaneous
23. Molecular approach
Association mapping
14
Diverse origin of spelts,
dicoccon, synthetic and 12
landraces derived
10
% observations
COP confirms good 8
enough diversity in the
panel 6
4
Phenotyping: 3 reps
randomized trial (Alpha 2
lattice-incomplete blocks) 0
in Cd. Obregon 0.0 0.1 0.2 0.3 0.4 0.5
COP - value
0.6 0.7 0.8 0.9 1.0
Genotyping: SNP 90K illumina platform – Largest consortium
covering diverse material
Mapping/map position of SNP will be available in mid 2012
Also SSR genotyping with Dr Klaus, SARDI, Australia
24. Challenges
● Soil Zn heterogeneity
● Applied common ZnSO4
100 kg/ha
● Soil Sampling in each check
plots (Waxwing)
● Spatial experimental design
& grid check approach
25. Product Attributes - Breeding trait in future
Goal: micronutrient density as core Objectives
breeding
will lead to Biofortification of all future varieties
micronutrients are not subject to genetic erosion
Wolfgang H PFEIFFER
26. Conclusion
Multi-location HPYT results were encouraging –
Moderately high H2, high genetic correlations
Leads were identified with high Zn and desirable yield
potential
Time to promote biofortified products in target countries
and additional G x E testing in other countries
Increasing trend for yield potential (and other desirable
traits) over the years from new set of materials (with
high Zn)
Expanding breeding operations (↑ no. of crosses, double
the size of YT)
Second cycle of breeding enhance possibility of
obtaining high Zn improved lines with good agronomy
XRF allows fast-track screening of Zn and Fe
Editor's Notes
HarvestPlus is a delivery program considers the entire impact pathway