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Genetic Variability, Genotype × Environment Interaction, Correlation, and GGE Biplot Analysis for Grain Iron and Zinc Concentration and Other Agronomic Traits in RIL Population of Sorghum (Sorghum bicolor L. Moench)

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Relation http://oar.icrisat.org/9985/
http://dx.doi.org/10.3389/fpls.2017.00712
10.3389/fpls.2017.00712
 
Title Genetic Variability, Genotype × Environment Interaction, Correlation, and GGE Biplot Analysis for Grain Iron and Zinc Concentration and Other Agronomic Traits in RIL Population of Sorghum (Sorghum bicolor L. Moench)
 
Creator Phuke, R M
Anuradha, K
Radhika, K
Jabeen, F
Anuradha, G
Ramesh, T
Hariprasanna, K
Mehtre, S P
Deshpande, S P
Anil, G
Das, R R
Rathore, A
Hash, C T
Reddy, B V S
Ashok Kumar, A
 
Subject Sorghum
Genetics and Genomics
 
Description The low grain iron and zinc densities are well documented problems in food crops, affecting crop nutritional quality especially in cereals. Sorghum is a major source of energy and micronutrients for majority of population in Africa and central India. Understanding genetic variation, genotype × environment interaction and association between these traits is critical for development of improved cultivars with high iron and zinc. A total of 336 sorghum RILs (Recombinant Inbred Lines) were evaluated for grain iron and zinc concentration along with other agronomic traits for 2 years at three locations. The results showed that large variability exists in RIL population for both micronutrients (Iron = 10.8 to 76.4 mg kg−1 and Zinc = 10.2 to 58.7 mg kg−1, across environments) and agronomic traits. Genotype × environment interaction for both micronutrients (iron and zinc) was highly significant. GGE biplots comparison for grain iron and zinc showed greater variation across environments. The results also showed that G × E was substantial for grain iron and zinc, hence wider testing needed for taking care of G × E interaction to breed micronutrient rich sorghum lines. Iron and zinc concentration showed high significant positive correlation (across environment = 0.79; p < 0.01) indicating possibility of simultaneous effective selection for both the traits. The RIL population showed good variability and high heritabilities (>0.60, in individual environments) for Fe and Zn and other traits studied indicating its suitability to map QTL for iron and zinc.
 
Publisher Frontiers Media
 
Date 2017-05
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/9985/1/fpls-08-00712.pdf
Phuke, R M and Anuradha, K and Radhika, K and Jabeen, F and Anuradha, G and Ramesh, T and Hariprasanna, K and Mehtre, S P and Deshpande, S P and Anil, G and Das, R R and Rathore, A and Hash, C T and Reddy, B V S and Ashok Kumar, A (2017) Genetic Variability, Genotype × Environment Interaction, Correlation, and GGE Biplot Analysis for Grain Iron and Zinc Concentration and Other Agronomic Traits in RIL Population of Sorghum (Sorghum bicolor L. Moench). Frontiers in Plant Science, 8 (712). pp. 1-13. ISSN 1664-462X