ICRISAT Archival Report 2006 - The seedlings of success in the ...

Milestone 5C.2.1.3: QTL for high grain Fe and Zn identified based on F 6 RIL mapping populations from two crosses
(CTH/SS/KNR, 2010)
Plant x plant crossing of five pairs of candidate parental lines, was followed by head-to-row advance of the F1
hybrids and their parents. Phenotypic assessment of Fe and Zn grain density of the parental lines, accompanied SSR
marker polymorphism assessment of the parents, and visual assessment of the F1 progenies and selfed progenies of
their parental plants, resulted in identification of four candidate populations from which F6 RIL populations can be
derived to map these traits in pearl millet, and two of these have been chosen for generation advance during 2007
30
25
No. of progenies
20
15
10
5
0
AIMP 92901
30-40 40-50 50-60 60-70 70-80 80-90 90-100 100-110 110-120
Fe and Zn content (mg kg -1 )
Figure 1. Frequency distribution of AIMP 92901 (S 3 ) progenies for grain Fe and Zn content, 2005
rainy and 2006 summer season, ICRISAT, Patancheru.
35
30
No. of progenies
25
20
15
10
GB 8735
5
0
30-40 40-50 50-60 60-70 70-80 80-90 90-100 100-110
Fe and Zn content (mg kg -1 )
Figure 2. Frequency distribution of GB 8735 (S 2 ) progenies for grain Fe and Zn content, 2005 rainy
and 2006 summer season, ICRISAT, Patancheru.
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