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15 results on '"Gopinath, Ikkurti"'

3. Maize genotypes with favourable dgat1–2 and fatb alleles possess stable high kernel oil and better fatty acid health and nutritive indices

Author

Katral, Ashvinkumar, Hossain, Firoz, Zunjare, Rajkumar U., Ragi, Shridhar, Kasana, Ravindra K., Duo, Hriipulou, Gopinath, Ikkurti, Mehta, Brijesh K., Guleria, Satish K., Thimmegowda, Vinutha, Vasudev, Sujata, Kumar, Bhupender, Karjagi, Chikkappa G., Pandey, Sushil, Neeraja, Chirravuri N., Yadava, Devendra K., and Muthusamy, Vignesh

Published
2024
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4. Unraveling popping quality through insights on kernel physical, agro-morphological, and quality traits of diverse popcorn (Zea mays var. everta) inbreds from indigenous and exotic germplasm

Author

Gopinath, Ikkurti, Hossain, Firoz, Thambiyannan, Selvakumar, Sharma, Neha, Duo, Hriipulou, Kasana, Ravindra K., Katral, Ashvinkumar, Devlash, Rakesh, Veluchamy, Sathya Sheela K.R., Zunjare, Rajkumar U., Sekhar, Javaji C., Guleria, Satish K., Rajasekaran, Ravikesavan, and Muthusamy, Vignesh

Published
2024
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7. Genetic analysis of popping quality traits and development of superior quality popcorn hybrids for a sustainable popcorn breeding program in India.

Author

Gopinath, Ikkurti, Hossain, Firoz, Zunjare, Rajkumar U, Thambiyannan, Selvakumar, Kumar, Santosh, Bhatt, Vinay, Chand, Gulab, Veluchamy, Sathya Sheela KR, Kumar, Bhupender, Sekhar, Javaji C., Singh, Gyanendra, Rajasekaran, Ravikesavan, and Muthusamy, Vignesh

Subjects
*GRAIN yields, *HETEROSIS, *GERMPLASM, *POPCORN, *CHEMICAL industry, *ALLELES
Abstract

BACKGROUND: Popcorn is the most popular specialty maize and it makes a significant contribution to the Indian and global economies. Despite perfect exploration of heterosis in field corn, progress in popcorn breeding remains constrained due to its narrow genetic base, leading to a significant dependence on imports. In this study, 15 landrace‐ and population‐derived inbreds from temperate and tropical germplasm were crossed with five testers, which are the parents of superior popcorn hybrids, in a line × tester mating design. RESULTS: Significant variation was observed in popping quality and agronomic traits among crosses evaluated across three locations representing diverse maize‐based agro‐climatic zones in India. Additive genetic variance governed the traits related to popping quality, whereas dominance variance was responsible for the agronomic traits. In addition to significant heterosis specific to certain traits, we identified promising crosses that exhibited superior performance in both popping quality and grain yield (GY). The genotype + genotype × environment (GGE) biplot methodology identified PMI‐PC‐104 and PMI‐PC‐101 as the best discriminating testers for popping quality traits and Dpcl‐15‐90 for GY. Lines PMI‐PC‐205, PMI‐PC‐207, and PMI‐PC‐209 were the best general combiners for popping quality traits and GY. The heterotic groups identified based on GGE‐biplots and the magnitude, direction and stability of combining ability effects would serve in the development of competitive popcorn hybrids for a sustainable popcorn market. CONCLUSION: Using the additive nature of popping quality traits and the dominant nature of GY, recurrent intrapopulation selection can be employed to derive desirable popping quality inbreds with high GY for genetic enhancement. Desirable popping quality alleles from novel germplasm can thus be combined with high‐yielding domestic elite inbreds to establish a sustainable popcorn breeding program. © 2024 Society of Chemical Industry. [ABSTRACT FROM AUTHOR]

Published
2024
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8. Expression Dynamics of lpa1 Gene and Accumulation Pattern of Phytate in Maize Genotypes Possessing opaque2 and crtRB1 Genes at Different Stages of Kernel Development

Author

Bhatt, Vinay, primary, Muthusamy, Vignesh, additional, Panda, Kusuma Kumari, additional, Katral, Ashvinkumar, additional, Chhabra, Rashmi, additional, Mishra, Subhra J., additional, Gopinath, Ikkurti, additional, Zunjare, Rajkumar U., additional, Neeraja, Chirravuri Naga, additional, Rakshit, Sujay, additional, Yadava, Devendra K., additional, and Hossain, Firoz, additional

Published
2023
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11. Genetic Improvement of Specialty Corn for Nutritional Quality Traits

Author

Firoz Hossain, Rajkumar U. Zunjare, Vignesh Muthusamy, Ashwani Kumar, Jayanthi Madhavan, Gopinath Ikkurti, Ashvinkumar Katral, Zahirul A. Talukder, Rashmi Chhabra, Gulab Chand, Vinay Bhatt, Irum Gul, Subhra J. Mishra, Hriipulou Duo, Suman Dutta, Nisrita Gain, Priyanka Chauhan, Shalma Maman, Shashidhar B. Reddappa, and Ravindra Kumar Kasana

Published
2023

14. Biofortification of Maize for Nutritional Security

Author

Firoz Hossain, Rajkumar U. Zunjare, Vignesh Muthusamy, Jayant S. Bhat, Brijesh K. Mehta, Devender Sharma, Zahirul A. Talukder, Rashmi Chhabra, Ashvinkumar Katral, Suman Dutta, Gulab Chand, Vinay Bhatt, Subhra J. Mishra, Nisrita Gain, Ravindra Kasana, Gopinath Ikkurti, and Hriipulou Duo

Published
2022

15. Molecular characterization, haplotype analysis and development of markers specific to dzs18gene regulating methionine accumulation in kernels of subtropical maize

Author

Duo, Hriipulou, Chhabra, Rashmi, Muthusamy, Vignesh, Mishra, Subhra J., Gopinath, Ikkurti, Sharma, Gaurav, Madhavan, Jayanthi, Neeraja, Chirravuri N., Zunjare, Rajkumar U., and Hossain, Firoz

Abstract

Maize kernel protein is deficient in sulfur-containing essential amino acid such as methionine. The dzs18gene encodes methionine-rich 18-kDa δ-zein in maize kernels. In this study, we sequenced full-length of dzs18gene (820 bp) among 10 maize inbreds, revealing 43 SNPs and 22 InDels(average length-7.58 bp). Three InDels (4 bp at 113th, 15 bp at 463rd and 3 bp at 615th position) distinguished the wild-type (functional) from the mutant (non-functional) allele of dzs18. The 4 bp (TTAT) insertion caused a frameshift mutation, resulting in truncated DZS18 protein. The 15 bp insertion (ATG–TCT–TCG–ATG–ATA) added methionine–serine–serine–methionine–isoleucine, while the 3 bp deletion (CAA) led to loss of a glutamine residue in the mutant allele. Three gene-based PCR markers were developed for diversity analysis of dzs18gene among 48 inbreds, which had an average methionine content of 0.136 %. (range: 0.031–0.340 %). Eight haplotypes were identified with methionine content varying from 0.066 % (Hap7) to 0.262 % (Hap3). Haplotypes with 4 bp deletion accumulated more methionine (0.174 %) than haplotypes with 4 bp insertion (0.082 %). The average methionine in 15 bp deletion and insertion haplotypes was 0.106 % and 0.150 %, respectively. The 3 bp insertion had 0.140 % methionine, while the deletion possessed 0.117 % methionine. Protein–protein association analysis predicted that DZS18 protein interacts with 19-kDa α-zein, 27- and 16-kDa γ-zeins, WAXY and O2 protein. A paralogue of dzs18gene with 74 % sequence identity was identified. The functional markers reported here could facilitate the development of high methionine maize cultivars, which holds great significance to combat malnutrition, especially in developing countries.

Published
2024
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