Estimation of heterosis for yield related traits and grain Zinc in rice (Oryza sativa L.).

Zinc is an essential micro-nutrients for humans and plants. Zinc on humans is obtained from food, especially rice. This research studied the effect of zinc sulfate heptahydrate spraying application, the effect of zinc sulphate heptahydrate enriched urea application, and the interaction of both, on yield and rice zinc grain concentration in Ciherang varieties. The research was carried out by RCBD. The first factor was without spraying zinc sulfate, spraying 75 g ha-1 zinc sulfate heptahydrate and spraying 150 g ha-1 zinc sulfate heptahydrate. The second factor was without zinc sulfate enriched urea, urea enriched by 7.5 kg ha-1 zinc sulfate heptahydrate, and urea enriched by 15 kg ha-1 zinc sulfate heptahydrate. The parameters observed were grain yield, grain zinc concentration, and rice plant growth. Data were analyzed by analysis of variance at 5% and DMRT test at 5%. The results indicated that spraying 75 g ha-1 zinc sulfate heptahydrate increased yield of rice up to 13%, urea enriched by 7.5 kg ha-1 zinc sulfate heptahydrate increased grain yield zinc concentration up to 33%, Combination of spraying 75 g ha-1 zinc sulfate heptahydrate and urea enriched by 7.5 kg ha-1 zinc sulfate heptahydrate can’t increased the yield and zinc grain concentration.<br /><br />Keywords: rice, urea, zinc, zinc sulfate heptahydrate<br /><br />

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Molecular Characterization of Rice (Oryza sativa L.) Genotypes Using Trait Specific Markers for Grain Zinc Content

International Journal of Pure & Applied Bioscience ◽

10.18782/2320-7051.7192 ◽

2018 ◽

Vol 6 (6) ◽

pp. 772-781

Author(s):

M. S. Umar Farooq ◽

Keyword(s):

Oryza Sativa ◽

Molecular Characterization ◽

Oryza Sativa L ◽

Zinc Content ◽

Grain Zinc

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Role of qGZn9a in controlling grain zinc concentration in rice, Oryza sativa L.

Theoretical and Applied Genetics ◽

10.1007/s00122-021-03873-4 ◽

2021 ◽

Author(s):

Miki Ogasawara ◽

Naoya Miyazaki ◽

Gotaro Monden ◽

Kenta Taniko ◽

Sathya Lim ◽

...

Keyword(s):

Oryza Sativa ◽

Zinc Concentration ◽

Oryza Sativa L ◽

Grain Zinc

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Stable SNP Allele Associations With High Grain Zinc Content in Polished Rice (Oryza sativa L.) Identified Based on ddRAD Sequencing

Frontiers in Genetics ◽

10.3389/fgene.2020.00763 ◽

2020 ◽

Vol 11 ◽

Author(s):

P. Madhu Babu ◽

C. N. Neeraja ◽

Santosha Rathod ◽

K. Suman ◽

G. Anurag Uttam ◽

...

Keyword(s):

Oryza Sativa ◽

Oryza Sativa L ◽

Zinc Content ◽

Polished Rice ◽

Grain Zinc

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STUDY OF ALLELIC VARIATION AT GENOME WIDE SSR LOCI IN PARENTS OF MAPPING POPULATION FOR HIGH GRAIN ZINC IN RICE (Oryza sativa L.)

Journal of Experimental Biology and Agricultural Sciences ◽

10.18006/2020.8(5).558.575 ◽

2020 ◽

Vol 8 (5) ◽

pp. 558-575

Author(s):

Sonali Habde ◽

◽

S. K. Singh ◽

Korada Mounika ◽

Amrutlal Khaire ◽

...

Keyword(s):

Oryza Sativa ◽

Ssr Markers ◽

Mapping Population ◽

Allelic Variation ◽

Oryza Sativa L ◽

Zinc Content ◽

Chromosome 9 ◽

Genome Wide ◽

Grain Zinc ◽

Ssr Loci

Rice (Oryza sativa L.) is the source of energy and nutrition for more than half of the world’s population hence it is a crop of global significance. Breeding of mineral dense rice varieties is the main target of biofortification strategy to address micronutrient malnutrition globally. Landraces and local genotypes are proven sources of novel alleles and are a promising donor for high grain mineral. A parental polymorphism survey is a prerequisite of any QTL mapping experiment. Present study consisting of SSR markers based parental polymorphism survey at IRRI South Asia Hub ICRISAT, Hyderabad. Parents of mapping population viz Rajendrakasturi (short grain aromatic rice variety with low grain zinc content) and URG-30 (a local genotype from Eastern Uttar Pradesh with high grain zinc content) were screened with 1013 microsatellite markers covering the entire length of all 12 chromosomes to study allelic variation at genome-wide SSR loci. The geographical diverse origin of parents is reflected in genotypic variations in terms of polymorphism. Out of 1013 whole genome wide SSR markers screened, 294 were found to be polymorphic which resulted in 29.02% polymorphism between the two parents. The highest polymorphism was observed with chromosome 4 (40.96%) whereas the lowest polymorphism was observed in chromosome 9 (16%). Based on the outcomes of the present study, a set of genome-wide polymorphic SSRs will be selected for genotyping of mapping population, preparation of linkage map and QTL analysis for high grain zinc content, iron content, grain quality and yield traits.

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