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Kanatti A, Rai KN, Radhika K, et al. Grain iron and zinc density in pearl millet: combining ability, heterosis and association with grain yield and grain size. Springerplus. 2014;3:763doi: 10.1186/2193-1801-3-763.
Kanatti, A., Rai, K. N., Radhika, K., Govindaraj, M., Sahrawat, K. L., & Rao, A. S. (2014). Grain iron and zinc density in pearl millet: combining ability, heterosis and association with grain yield and grain size. SpringerPlus, 3763. https://doi.org/10.1186/2193-1801-3-763
Kanatti, Anand, et al. "Grain iron and zinc density in pearl millet: combining ability, heterosis and association with grain yield and grain size." SpringerPlus vol. 3 (2014): 763. doi: https://doi.org/10.1186/2193-1801-3-763
Kanatti A, Rai KN, Radhika K, Govindaraj M, Sahrawat KL, Rao AS. Grain iron and zinc density in pearl millet: combining ability, heterosis and association with grain yield and grain size. Springerplus. 2014 Dec 26;3:763. doi: 10.1186/2193-1801-3-763. eCollection 2014. PMID: 25674488; PMCID: PMC4320223.
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Springerplus. 2014 Dec 26;3:763. doi: 10.1186/2193-1801-3-763. eCollection 2014.

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

SpringerPlus

Anand Kanatti, Kedar N Rai, Kommineni Radhika, Mahalingam Govindaraj, Kanwar L Sahrawat, Aluri S Rao

Affiliations

  1. International Crops Research Institute for Semi-Arid Tropics (ICRISAT), Patancheru, Hyderabad, 502324 Telangana India ; Department of Genetics and Plant Breeding, College of Agriculture, Professor Jayashankar Telangana State Agricultural University, Rajendranagar, Hyderabad, 500 030 Telangana India.
  2. International Crops Research Institute for Semi-Arid Tropics (ICRISAT), Patancheru, Hyderabad, 502324 Telangana India.
  3. Department of Genetics and Plant Breeding, College of Agriculture, Professor Jayashankar Telangana State Agricultural University, Rajendranagar, Hyderabad, 500 030 Telangana India.

PMID: 25674488 PMCID: PMC4320223 DOI: 10.1186/2193-1801-3-763

Abstract

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.

Keywords: Correlation; Genetic variability; Grain yield; Heterosis; Hybrids; Micronutrients; Pearl millet

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