Rajkumar U. Zunjare

Indian Agricultural Research Institute

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Vignesh Muthusamy

Indian Agricultural Research Institute

123

Firoz Hossain

Indian Agricultural Research Institute

118

Rashmi Chhabra

Indian Agricultural Research Institute

Gulab Chand

Indian Agricultural Research Institute

Aanchal Baveja

Indian Agricultural Research Institute

Subhra J. Mishra

Indian Agricultural Research Institute

Ashvinkumar Katral

Indian Agricultural Research Institute

Brijesh K. Mehta

Indian Grassland and Fodder Research Institute

Vinay Bhatt

Indian Agricultural Research Institute

Nisrita Gain

Indian Agricultural Research Institute

Cooperative Institutions

Indian Agricultural Research Institute

115

Indian Council of Agricultural Research

ICAR-Indian Institute of Maize Research

Punjab Agricultural University

Amity University

National Bureau of Plant Genetic Resources

Chaudhary Charan Singh Haryana Agricultural University

National Research Centre on Plant Biotechnology

University of Agriculture Faisalabad

Central Agricultural University

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Genetic variability of popping quality traits and microsatellite-based characterization of popcorn inbreds for utilization in breeding programme

Indian Journal of Genetics and Plant Breeding (The) (2020)

Deepa Pal Vignesh Muthusamy Rajkumar U. Zunjare Sunil K. Jaiswal Rashmi Chhabra

Popcorn is a popular snack item worldwide. The genetic base of popcorn germplasm is quite narrow, which resulted in limited number of popcorn hybrids. Here, a set of sub-tropically adapted 39 popcorn inbreds of exotic- and indigenous-origin, were characterized using morphological traits and molecular markers for their effective utilization in hybrid breeding. Significant variation for grain popping percentage (GPP: 86.0-98.0%), percent popping expansion (PPE: 1493-3213%) and volume after popping (VAP: 210-315ml) was observed. The mean PPE (2069%) and GPP (93.6%) among popcorn inbreds were higher than the popcorn check variety, VL popcorn (PPE: 1739%, GPP: 92%). Positive correlations were observed among GPP, PPE and VAP. Molecular characterization using 72 SSRs produced 237 alleles with a mean of 3.3 alleles per locus. Polymorphism information content ranged from 0.05 to 0.68, while Jaccard’s dissimilarity coefficients varied from 0.27-0.82. Principal coordinate analysis also depicted diverse genetic nature of inbreds. Cluster analysis grouped the inbreds into three major clusters each having 16, 18 and 5 inbreds. Contrasting inbreds were identified for development of mapping populations to identify loci governing desirable popping quality. The study also identified potential heterotic combinations. The information generated here assumes great significance in breeding for popcorn hybrids.

Germ plasm

Jaccard index

10.31742/ijgpb.80.2.5

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Citations (3)

Multilocus functional characterization of indigenous and exotic inbreds for dgat1-2, fatb, ge2 and wri1a genes affecting kernel oil and fatty acid profile in maize

Gene (2023)

Ashvinkumar Katral Firoz Hossain Rajkumar U. Zunjare Rashmi Chhabra T. Vinutha

Trait

10.1016/j.gene.2023.148001

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Genetic analysis on composition of sulfur-containing amino acids: methionine and cysteine in subtropical maize

Journal of Food Composition and Analysis (2024)

Hriipulou Duo Rajkumar U. Zunjare Subhra J. Mishra Vignesh Muthusamy Selvakumar Thambiyannan

Food composition data

10.1016/j.jfca.2024.106774

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Biofortification of Maize for Nutritional Security

Springer eBooks (2022)

Firoz Hossain Rajkumar U. Zunjare Vignesh Muthusamy Jayant S. Bhat Brijesh K. Mehta

Biofortification

Essential nutrient

10.1007/978-981-16-3280-8_6

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Citations (13)

Genetic Evidence of Recessive Epistasis Among Sex Determining silkless1 (sk1) tasselseed1 (ts1) and tasselseed2 (ts2) Genes and Its Utility in Maize (Zea mays L.) Breeding

Plant Breeding (2024)

Rajkumar U. Zunjare Vignesh Muthusamy Gulab Chand Priyanka Chauhan Aayushi Singh Rathore

ABSTRACT In maize, sex is determined by the formation of staminate and pistillate florets from an initially bisexual floral meristem through action of Silkless1 ( Sk1 ), Tasselseed1 ( Ts1 ) and Tasselseed2 ( Ts2 ) genes. In this study, separate temperate donors having mutant sk1 (EC904829 and EC904831), ts1 (EC904827) and ts2 (EC904824) genes were crossed with sub‐tropical inbreds (HKI323 and HKI1105) to investigate the genetics and interaction of silkless and tasselseed traits. The monogenic and nuclear inheritance of sk1 , ts1 and ts2 genes was established in a standard Mendelian principles in both monohybrid and dihybrid crosses irrespective of genetic background. About 444 F 2 progenies across digenic population ‐A, ‐B and ‐C segregated as 239 normal: 109 silkless: 96 tasselseed, and 377 progenies of digenic populations ‐D, ‐E and ‐F segregated with 214 normal: 79 silkless: 84 tasselseed plants revealing recessive epistatic interaction (9:3:4) of sk1 with two ts mutations ( ts1 and ts2 ). No progeny with both silkless and tasselseed phenotype was observed. The double mutants ( sk1sk1 / ts1ts1 and sk1sk1 / ts2ts2 ) were identified through progeny testing. Our study emphasize the untapped potential of these mutants, providing a renewed focus for maize breeders worldwide.

Epistasis

10.1111/pbr.13224

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Molecular characterization, haplotype analysis and development of markers specific to dzs18 gene regulating methionine accumulation in kernels of subtropical maize

3 Biotech (2024)

Hriipulou Duo Rashmi Chhabra Vignesh Muthusamy Subhra J. Mishra Ikkurti Gopinath

10.1007/s13205-024-04088-2

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Analysis of responses of novel double mutant (sh2sh2/su1su1) sweet corn hybrids for kernel sweetness under different sowing- and harvest-time

The Indian Journal of Agricultural Sciences (2017)

Brijesh K. Mehta Firoz Hossain Vignesh Muthusamy Rajkumar U. Zunjare Javaji C. Sekhar

Sweet corn used as vegetable and component of various snack items, has emerged as one of the popular choices across the world. Identification of suitable sowing- and harvest-time for achieving high-kernel sweetness and yield is of paramount importance for successful commercialization of sweet corn hybrids. In the present study, 11 novel double mutant sweet corn (sh2sh2/su1su1) hybrids along with traditional sh2sh2-based checks were evaluated at three sowing- and harvest-dates. Kernel brix across double mutant sweet corn hybrids ranged from 17.6-26.6% (Mean:21.0%) and was comparatively higher than sh2sh2-based checks (19.3%). Sowing- and harvest- time had significant influence on brix accounting 19.4% and 8.5% of the total variation, respectively. Genotype Ã— sowing time, genotypeÃ— harvest time and genotype Ã— sowing time Ã— harvest time interactions contributed 11.4%, 10.3% and 15.2% of the total variation for brix, respectively. Average brix across harvest dates attained highest value in third sowing and 24-days after pollination recorded the highest brix across sowing dates. Few hybrids also displayed stable brix across sowing- and harvest- time. Significant influence of sowing time on both cob- and fodder- yield was also observed, and third sowing was identified as the most favourable environment for both the traits. Kernel sweetness did not show any correlation with cob- and fodder- yield. The information generated here hold significant promise in the improvement of sweet corn. This is the first ever report of responses of sh2sh2/su1su1-based hybrids to different sowing- and harvest- time for kernel sweetness and yield.

Brix

Sweetness

Fodder

10.56093/ijas.v87i11.75787

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A novel quantitative trait loci governs prolificacy in ‘Sikkim Primitive’ – A unique maize (Zea mays) landrace of North‐Eastern Himalaya

Plant Breeding (2021)

Nitish Ranjan Prakash Rajkumar U. Zunjare Vignesh Muthusamy Mayank Rai Amit Kumar

Abstract ‘Sikkim Primitive’ is a prolific maize landrace with five to nine ears per plant. Though the landrace was discovered in 1960s, loci governing the prolificacy was not identified. Here, a prolific inbred ‘MGUSP101’ developed from ‘Sikkim Primitive’ was crossed with two nonprolific inbreds, namely, HKI1128 and UMI1200. Two F 2:3 populations (MGUSP101 × HKI1128 and MGUSP101 × UMI1200) were evaluated at three locations. Across locations, number of ears per plant varied from 1.35 to 5.38 in MGUSP101 × HKI1128 population. Bulked‐segregant analysis coupled with targeted QTL mapping identified a major QTL (bin: 8.05) explaining 31.7% phenotypic variation amongst 145 F 2:3 individuals. The QTL was further validated in 138 F 2:3 individuals of MGUSP101 × UMI1200 (range: 1.10–4.88). The identified QTL explained 29.2% of phenotypic variance at the same interval. We designated this novel QTL as ‘ qProl‐SP‐8 . 05 ’ which has not been reported earlier. Six candidate genes responsible for prolificacy were also identified. This novel QTL can be introgressed through marker‐assisted selection for induction of prolificacy in elite maize. This is the first report of identification of locus governing prolificacy in ‘Sikkim Primitive’.

Bulked segregant analysis

10.1111/pbr.12924

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Author response for "Effect of storage period on provitamin‐A carotenoids retention in biofortified maize hybrids"

Suman Dutta Vignesh Muthusamy Firoz Hossain Aanchal Baveja Krishnan P. Abhijith

Biofortification

10.1111/ijfs.14785/v2/response1

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Characterization of diverse provitamin: A rich inbreds for lipoxygenase (LOXs) gene governing oxidative deterioration in maize

International Journal of Chemical Studies (2019)

Suman Dutta Vignesh Muthusamy Rashmi Chhabra Rajkumar U. Zunjare Firoz Hossain

Post-harvest deterioration of the quality of maize grain has become a serious problem worldwide. LOXs are large group of monomeric dioxygenase proteins having detrimental role on quality parameters in maize grains. Here, a comprehensive analysis was carried out on physicochemical parameters of LOX gene in diverse maize inbreds. In-silico analysis revealed differential expression of LOX genes in different seed parts like ear, embryo, embryo sac and endosperm. Variation was also found for sub-cellular localization of the protein. Of the 16 inbreds screened in the study through enzymatic assay, LOX activity varied from 2.63 to 9.36 units/min/mg of protein, with mean of 5.09 units/min/mg of protein. VQL1-PV was found to have the highest lipoxygenase activity, whereas HKI323 recorded the lowest LOX activity, offering potential scope in multivitamin staking in bio fortification programme along with high oil content. Identification of contrasting genotypes with differential LOX activity would help in future genetic studies.

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