Genetic variation for methionine, tryptophan and lysine in maize (Zea mays L.) inbred lines

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Ramesh Kumar
Vishal Singh
Abhijit Kumar Das
Dharam Paul Chaudhary
G. K. Chikkappa
Alla Singh
Sunil Neelam
Bhupender Kumar
Jatin Sharma
Yashmeet Kaur
Sushil Kumar
Shanu Shukla
Preeti Sharma
Digbijaya Swain
Neha Sharma
Sujay Rakshit

Abstract

A lack of key amino acids, including lysine, tryptophan and methionine causes nutritional imbalance in maize (Zea mays L.) grain protein. The present investigation was carried out to determine the genetic variation for kernel methionine, lysine and tryptophan content in 25 promising maize inbred lines. ANOVA revealed significant differences between the genotypes for methionine (1.56–2.96%), lysine (1.90–3.68%), and tryptophan (0.51–0.92 %) content. QIL-4-2831 (2.96%), QIL-4-2829 (2.60%), QIL-4-2830 (2.44%), QIL-4-2311 (2.42%) and QIL-4-3080 (2.39%) had the highest mean methionine content. The present findings also indicated that there was no significant correlation between methionine and lysine (r=0.14), nor between methionine and tryptophan (r = 0.09). However, lysine and tryptophan were shown to have a positive correlation (r = 0.84**). The high methionine lines can be used for developing high methionine cultivars in future crop improvement programs.

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How to Cite
Kumar, R., Vishal Singh, Abhijit Kumar Das, Dharam Paul Chaudhary, G. K. Chikkappa, Alla Singh, Sunil Neelam, Bhupender Kumar, Jatin Sharma, Yashmeet Kaur, Sushil Kumar, Shanu Shukla, Preeti Sharma, Digbijaya Swain, Neha Sharma, & Sujay Rakshit. (2025). Genetic variation for methionine, tryptophan and lysine in maize (Zea mays L.) inbred lines. INDIAN JOURNAL OF GENETICS AND PLANT BREEDING, 85(01), 87–94. https://doi.org/10.31742/ISGPB.85.1.10
Section
Research Article

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