John A. Zwar

1.1k total citations
18 papers, 849 citations indexed

About

John A. Zwar is a scholar working on Plant Science, Molecular Biology and Biotechnology. According to data from OpenAlex, John A. Zwar has authored 18 papers receiving a total of 849 indexed citations (citations by other indexed papers that have themselves been cited), including 14 papers in Plant Science, 12 papers in Molecular Biology and 6 papers in Biotechnology. Recurrent topics in John A. Zwar's work include Plant tissue culture and regeneration (9 papers), Enzyme Production and Characterization (5 papers) and Plant Stress Responses and Tolerance (3 papers). John A. Zwar is often cited by papers focused on Plant tissue culture and regeneration (9 papers), Enzyme Production and Characterization (5 papers) and Plant Stress Responses and Tolerance (3 papers). John A. Zwar collaborates with scholars based in Australia, India and United Kingdom. John A. Zwar's co-authors include John V. Jacobsen, Thomas J. Higgins, Michael I. Bruce, Peter M. Chandler, Andrew D. Hanson, N. P. Kefford, Adam S. Inglis, Richard Hooley, Rosalind Brown and W. Bottomley and has published in prestigious journals such as Nature, Proceedings of the National Academy of Sciences and PLANT PHYSIOLOGY.

In The Last Decade

John A. Zwar

18 papers receiving 764 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
John A. Zwar Australia	13	696	401	231	64	55	18	849
G. W. Schaeffer United States	18	846 1.2×	776 1.9×	108 0.5×	38 0.6×	40 0.7×	57	968
Albert R. Carlier Belgium	19	464 0.7×	512 1.3×	151 0.7×	63 1.0×	44 0.8×	47	866
H. Hartings Italy	17	953 1.4×	638 1.6×	121 0.5×	45 0.7×	35 0.6×	43	1.2k
Marguerite Kopp France	8	680 1.0×	235 0.6×	85 0.4×	37 0.6×	28 0.5×	12	786
Steven H. Doares United States	6	795 1.1×	337 0.8×	46 0.2×	31 0.5×	60 1.1×	7	963
Georges Boudart France	13	876 1.3×	545 1.4×	89 0.4×	39 0.6×	87 1.6×	14	1.1k
Yves Chupeau France	21	951 1.4×	962 2.4×	225 1.0×	15 0.2×	47 0.9×	42	1.2k
Bernhard Schlesier Germany	14	367 0.5×	349 0.9×	140 0.6×	46 0.7×	153 2.8×	34	649
Marc C. Van Montagu Belgium	9	489 0.7×	487 1.2×	218 0.9×	39 0.6×	15 0.3×	14	706
Charles N. Hankins United States	13	193 0.3×	253 0.6×	88 0.4×	37 0.6×	49 0.9×	15	386

Countries citing papers authored by John A. Zwar

Since Specialization

Citations

This map shows the geographic impact of John A. Zwar's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by John A. Zwar with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites John A. Zwar more than expected).

Fields of papers citing papers by John A. Zwar

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by John A. Zwar. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by John A. Zwar. The network helps show where John A. Zwar may publish in the future.

Co-authorship network of co-authors of John A. Zwar

This figure shows the co-authorship network connecting the top 25 collaborators of John A. Zwar. A scholar is included among the top collaborators of John A. Zwar based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with John A. Zwar. John A. Zwar is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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18 of 18 papers shown

Zwar, John A. & Peter M. Chandler. (1995). ?-Amylase production and leaf protein synthesis in a gibberellin-responsive dwarf mutant of ?Himalaya? barley (Hordeum vulgare L.). Planta. 197(1). 30 indexed citations

Zwar, John A. & Richard Hooley. (1986). Hormonal Regulation of α-Amylase Gene Transcription in Wild Oat (Avena fatua L.) Aleurone Protoplasts. PLANT PHYSIOLOGY. 80(2). 459–463. 48 indexed citations

Jacobsen, John V., John A. Zwar, & Peter M. Chandler. (1985). Gibberellic-acid-responsive protoplasts from mature aleurone of Himalaya barley. Planta. 163(3). 430–438. 56 indexed citations

Chandler, Peter M., John A. Zwar, John V. Jacobsen, Thomas J. Higgins, & Adam S. Inglis. (1984). The effects of gibberellic acid and abscisic acid on ?-amylase mRNA levels in barley aleurone layers studies using an ?-amylase cDNA clone. Plant Molecular Biology. 3(6). 407–418. 134 indexed citations

Hanson, Andrew D., John V. Jacobsen, & John A. Zwar. (1984). Regulated Expression of Three Alcohol Dehydrogenase Genes in Barley Aleurone Layers. PLANT PHYSIOLOGY. 75(3). 573–581. 101 indexed citations

Higgins, Thomas J., John V. Jacobsen, & John A. Zwar. (1982). Gibberellic acid and abscisic acid modulate protein synthesis and mRNA levels in barley aleurone layers. Plant Molecular Biology. 1(3). 191–215. 92 indexed citations

Higgins, Thomas J., John A. Zwar, & John V. Jacobsen. (1976). Gibberellic acid enhances the level of translatable mRNA for α-amylase in barley aleurone layers. Nature. 260(5547). 166–169. 138 indexed citations

Jacobsen, John V. & John A. Zwar. (1974). Gibberellic Acid Causes Increased Synthesis of RNA Which Contains Poly(A) in Barley Aleurone Tissue. Proceedings of the National Academy of Sciences. 71(8). 3290–3293. 36 indexed citations

Zwar, John A.. (1973). Effects of Cytokinins on the Nucleic Acids of Tobacco Pith. Journal of Experimental Botany. 24(4). 701–710. 12 indexed citations

10.

Kefford, N. P., Michael I. Bruce, & John A. Zwar. (1973). Retardation of leaf senescence by urea cytokinins in Raphanus sativus. Phytochemistry. 12(5). 995–1003. 9 indexed citations

11.

Zwar, John A., et al.. (1973). Methylation patterns of ribonucleic acids from chloroplasts and cytoplasm of fenugreek (Trigonella foenumgraecum L.) cotyledons. Biochimica et Biophysica Acta (BBA) - Nucleic Acids and Protein Synthesis. 299(4). 564–567. 3 indexed citations

12.

Zwar, John A. & John V. Jacobsen. (1972). A Correlation between a Ribonucleic Acid Fraction Selectively Labeled in the Presence of Gibberellic Acid and Amylase Synthesis in Barley Aleurone Layers. PLANT PHYSIOLOGY. 49(6). 1000–1006. 22 indexed citations

13.

Zwar, John A. & Rosalind Brown. (1968). Distribution of Labelled Plant Growth Regulators within Cells. Nature. 220(5166). 500–501. 9 indexed citations

14.

Kefford, N. P., Michael I. Bruce, & John A. Zwar. (1966). Cytokinin activities of phenylurea derivatives ? Bud growth. Planta. 68(3). 292–296. 12 indexed citations

15.

Bruce, Michael I. & John A. Zwar. (1966). Cytokinin activity of some substituted ureas and thioureas. Proceedings of the Royal Society of London. Series B, Biological sciences. 165(999). 245–265. 73 indexed citations

16.

Kefford, N. P., John A. Zwar, & Michael I. Bruce. (1965). Enhancement of lettuce seed germination by some urea derivatives. Planta. 67(1). 103–106. 7 indexed citations

17.

Bruce, Michael I., John A. Zwar, & N. P. Kefford. (1965). Chemical structure and plant kinin activity— the activity of urea and thiourea derivatives. Life Sciences. 4(4). 461–466. 57 indexed citations

18.

Zwar, John A., N. P. Kefford, W. Bottomley, & Michael I. Bruce. (1963). A Comparison of Plant Cell Division Inducers from Coconut Milk and Apple Fruitlets. Nature. 200(4907). 679–680. 10 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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