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Grain iron and zinc density in pearl millet: combining ability, heterosis and association with grain yield and grain size

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Relation http://oar.icrisat.org/8487/
http://dx.doi.org/ doi:10.1186/2193-1801-3-763
 
Title Grain iron and zinc density in pearl millet:
combining ability, heterosis and association with
grain yield and grain size
 
Creator Kanatti, A
Rai, K N
Radhika, K
Govindaraj, M
Sahrawat, K L
Rao, A S
 
Subject Millets
 
Description Genetics of micronutrients and their relationships with grain yield and other traits have a direct bearing on devising
effective strategies for breeding biofortified crop cultivars. A line × tester study of 196 hybrids and their 28 parental
lines of pearl millet (Pennisetum glaucum (L.) R.Br.) showed large genetic variability for Fe and Zn densities with
predominantly additive gene action and no better-parent heterosis. Hybrids with high levels of Fe and Zn densities,
involved both parental lines having significant positive general combining ability (GCA), and there were highly
significant and high positive correlations between performance per se of parental lines and their GCAs. There
was highly significant and high positive correlation between the Fe and Zn densities, both for performance per
se and GCA. Fe and Zn densities had highly significant and negative, albeit weak, correlations with grain yield
and highly significant and moderate positive correlation with grain weight in hybrids. These correlations, however,
were non-significant in the parental lines. Thus, to breed hybrids with high Fe and Zn densities would require incorporating
these micronutrients in both parental lines. Also, simultaneous selection for Fe and Zn densities based on performance
per se would be highly effective in selecting for GCA. Breeding for high Fe and Zn densities with large grain size
will be highly effective. However, combining high levels of these micronutrients with high grain yield would require
growing larger breeding populations and progenies than breeding for grain yield alone, to make effective selection for
desirable recombinants
 
Publisher Springer
 
Date 2014
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights —
 
Identifier http://oar.icrisat.org/8487/1/Grain%20iron%20and%20zinc%20density%20in%20pearl%20millet.pdf
Kanatti, A and Rai, K N and Radhika, K and Govindaraj, M and Sahrawat, K L and Rao, A S (2014) Grain iron and zinc density in pearl millet: combining ability, heterosis and association with grain yield and grain size. SpringerPlus, 3 (763). pp. 1-12. ISSN 2193-1801