Ramesh Kumar
ICAR-Indian Institute of Maize Research, Punjab Agricultural University (PAU) Campus, Ludhiana 141 004, Punjab, India.
Vishal Singh
ICAR-Indian Institute of Maize Research, Punjab Agricultural University (PAU) Campus, Ludhiana 141 004, Punjab, India.
Abhijit Kumar Das
ICAR-Indian Institute of Maize Research, Punjab Agricultural University (PAU) Campus, Ludhiana 141 004, Punjab, India.
Dharam Paul Chaudhary
ICAR-Indian Institute of Maize Research, Punjab Agricultural University (PAU) Campus, Ludhiana 141 004, Punjab, India.
G. K. Chikkappa
ICAR-Indian Institute of Maize Research Regional Station, Begusarai 851 211, Bihar, India.
Alla Singh
ICAR-Indian Institute of Maize Research, Punjab Agricultural University (PAU) Campus, Ludhiana 141 004, Punjab, India.
Sunil Neelam
ICAR-Indian Institute of Maize Research WNC, Hyderabad 500 030, Telangana, India.
Bhupender Kumar
ICAR-Indian Institute of Maize Research, Punjab Agricultural University (PAU) Campus, Ludhiana 141 004, Punjab, India.
Jatin Sharma
Department of Plant Breeding & Genetics, PAU, Ludhiana 141 004, Punjab, India.
Yashmeet Kaur
ICAR-Indian Institute of Maize Research, Punjab Agricultural University (PAU) Campus, Ludhiana 141 004, Punjab, India.
Sushil Kumar
ICAR-Indian Institute of Maize Research, Punjab Agricultural University (PAU) Campus, Ludhiana 141 004, Punjab, India.
Shanu Shukla
ICAR-Indian Institute of Maize Research, Punjab Agricultural University (PAU) Campus, Ludhiana 141 004, Punjab, India.
Preeti Sharma
Chaudhary Charan Singh Haryana Agricultural University, Regional Research Station, Karnal 132 116, Haryana, India.
Digbijaya Swain
Department of Plant Breeding & Genetics, OUAT, Bubhneshwar 751 003, Odhisa, India.
Neha Sharma
Himachal Pradesh Krishi Vishwavidyalaya, HAREC Bajaura 175 125, Himachal Pradesh, India.
Sujay Rakshit
ICAR-Indian Institute of Agricultural Biotechnology, Ranchi 834 003, Jharkhand, India.
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.
