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Genetic variability and inter-relationship of kernel carotenoids among indigenous and exotic maize (Zea mays L.) inbreds

Muthusamy, V. and Hossain, F. and Thirunavukkarasu, N. and Saha, S. and Agrawal, P. K. and Guleria, S. K. and Gupta, H. S. (2015) Genetic variability and inter-relationship of kernel carotenoids among indigenous and exotic maize (Zea mays L.) inbreds. Cereal Research Communications, 43 (4). pp. 567-578. ISSN 0133-3720

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Abstract

Carotenoids play vital role in growth and development of human beings. Yellow maize kernel contains carotenoids that possess provitamin A and antioxidant activity. Multilocation based analyses of 105 maize inbreds of indigenous and exotic origin revealed wide genetic variation for lutein (0.2–11.3 μg/g), zeaxanthin (0.2–20.0 μg/g) and β-carotene (0.0–15.0 μg/g). For β-cryptoxanthin, low variation (0.1–3.3 μg/g) was observed. Carotenoids were quite stable over environments that played minor role in causing variation. The heritability (>90%) and genetic advance (>75%) were high for all the carotenoid components. Zeaxanthin showed positive correlation with lutein and β-cryptoxanthin, while β-carotene, the major provitamin A carotenoid, did not show correlation with other carotenoids. Kernel colour was positively correlated with lutein (0.25), zeaxanthin (0.47) and β-cryptoxanthin (0.44), but not with β-carotene (0.04). This suggested that visual selection based on kernel colour will be misleading in selecting provitamin A-rich genotypes. Inbreds with provitamin A and non-provitamin A carotenoids identified in the present study will help in development of biofortified maize hybrids.

Item Type: Article
Subjects: S Agriculture / mezőgazdaság > S1 Agriculture (General) / mezőgazdaság általában
Depositing User: Ágnes Sallai
Date Deposited: 04 Jul 2016 10:30
Last Modified: 31 Dec 2016 00:16
URI: http://real.mtak.hu/id/eprint/37196

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