Seibi Oka

1.7k total citations · 1 hit paper
45 papers, 1.4k citations indexed

About

Seibi Oka is a scholar working on Plant Science, Molecular Biology and Genetics. According to data from OpenAlex, Seibi Oka has authored 45 papers receiving a total of 1.4k indexed citations (citations by other indexed papers that have themselves been cited), including 36 papers in Plant Science, 24 papers in Molecular Biology and 9 papers in Genetics. Recurrent topics in Seibi Oka's work include Plant tissue culture and regeneration (23 papers), Wheat and Barley Genetics and Pathology (9 papers) and Genetic Mapping and Diversity in Plants and Animals (9 papers). Seibi Oka is often cited by papers focused on Plant tissue culture and regeneration (23 papers), Wheat and Barley Genetics and Pathology (9 papers) and Genetic Mapping and Diversity in Plants and Animals (9 papers). Seibi Oka collaborates with scholars based in Japan, China and United States. Seibi Oka's co-authors include Takao Komatsuda, Kazuko Ono, Haruko Onodera, Naho Hara, Seiichi Toki, Hiroshi Tanaka, Akemi Tagiri, Fumio Takaiwa, Katsuo Ohyama and Fumio Taguchi-‍Shiobara and has published in prestigious journals such as The Plant Journal, Theoretical and Applied Genetics and Annals of Botany.

In The Last Decade

Seibi Oka

42 papers receiving 1.2k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Early infection of scutellum tissue with Agrobacterium allows high‐speed transformation of rice

2006 637 citations Seibi Oka et al. profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Seibi Oka Japan	17	1.2k	921	207	114	55	45	1.4k
Maureen M. M. Fitch United States	16	1.1k 0.9×	822 0.9×	129 0.6×	240 2.1×	31 0.6×	44	1.3k
Joël Piquemal France	9	768 0.6×	897 1.0×	150 0.7×	193 1.7×	34 0.6×	9	1.3k
R. Ramamoorthy Singapore	16	912 0.7×	694 0.8×	105 0.5×	64 0.6×	26 0.5×	26	1.1k
Muneo Yamazaki Japan	16	1.2k 1.0×	656 0.7×	78 0.4×	30 0.3×	43 0.8×	22	1.3k
Nobukazu Namiki Japan	17	1.3k 1.0×	780 0.8×	353 1.7×	34 0.3×	74 1.3×	21	1.5k
Zongxiu Sun China	18	1.7k 1.4×	918 1.0×	343 1.7×	32 0.3×	35 0.6×	27	1.8k
Yutaka Tabei Japan	15	591 0.5×	523 0.6×	87 0.4×	137 1.2×	24 0.4×	56	744
Alan L. Kriz United States	16	647 0.5×	458 0.5×	85 0.4×	120 1.1×	16 0.3×	26	854
Renate Horn Germany	20	1.2k 1.0×	846 0.9×	191 0.9×	42 0.4×	44 0.8×	56	1.5k
Swatismita Ray India	8	1.5k 1.2×	1.1k 1.1×	241 1.2×	30 0.3×	23 0.4×	8	1.7k

Countries citing papers authored by Seibi Oka

Since Specialization

Citations

This map shows the geographic impact of Seibi Oka'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 Seibi Oka with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Seibi Oka more than expected).

Fields of papers citing papers by Seibi Oka

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Seibi Oka. 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 Seibi Oka. The network helps show where Seibi Oka may publish in the future.

Co-authorship network of co-authors of Seibi Oka

This figure shows the co-authorship network connecting the top 25 collaborators of Seibi Oka. A scholar is included among the top collaborators of Seibi Oka 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 Seibi Oka. Seibi Oka is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Taguchi-‍Shiobara, Fumio, Toshio Yamamoto, Masahiro Yano, & Seibi Oka. (2006). Mapping QTLs that control the performance of rice tissue culture and evaluation of derived near-isogenic lines. Theoretical and Applied Genetics. 112(5). 968–976. 31 indexed citations

Tanno, Ken-ichi, Fumio Takaiwa, Seibi Oka, & Takao Komatsuda. (2004). A Nucleotide Sequence Linked to the Vrs1 Locus for Studies of Differentiation in Cultivated Barley (Hovdeum Vulgare L.). Hereditas. 130(1). 77–82. 15 indexed citations

Oka, Seibi, et al.. (2000). Induction of hairy roots from hypocotyls of mulberry (Morus indica L.) by Japanese wild strains of Agrobacterium rhizogenes. Nihon sanshigaku zasshi. 69(1). 13–19. 12 indexed citations

Oka, Seibi, et al.. (1999). Sustained expression of dwarf symptoms in mulberry shoots grown in vitro and their disappearance through the culture of multiple bud bodies. Nihon sanshigaku zasshi. 68(4). 339–344. 1 indexed citations

Komatsuda, Takao, Wenbin Li, Fumio Takaiwa, & Seibi Oka. (1999). High resolution map around the <i>vrs1</i> locus controlling two- and six-rowed spike in barley, <i>Hordeum vulgare</i>. Genome. 42(2). 248–253. 7 indexed citations

Oka, Seibi & Takao Niino. (1997). Long Term Storage of Pear (Pyrus spp.) Shoot Cultures In Vitro by Minimal Growth Method. Japan Agricultural Research Quarterly JARQ. 31(1). 1–7. 5 indexed citations

Komatsuda, Takao, Shinji Kawasaki, Ikuo Nakamura, et al.. (1997). Identification of random amplified polymorphic DNA (RAPD) markers linked to the v locus in barley, Hordeum vulgare L.. Theoretical and Applied Genetics. 95(4). 637–642. 8 indexed citations

Satō, Hiroshi, et al.. (1994). The Effect of 4-PU on Protoplast Culture of Peppermint(Mentha piperita L.). Plant tissue culture letters. 11(2). 134–138. 4 indexed citations

Satō, Hiroshi, et al.. (1993). Plant regeneration from protoplasts of peppermint (Mentha piperita L.). Plant Cell Reports. 12(10). 546–50. 12 indexed citations

10.

Komatsuda, Takao, et al.. (1993). Genetic mapping of a quantitative trait locus (QTL) that enhances the shoot differentiation rate in Hordeum vulgare L.. Theoretical and Applied Genetics. 86(6). 713–720. 53 indexed citations

11.

Oka, Seibi, et al.. (1992). Morphological characters of regenerated mulberry trees from preserved winter buds in liquid nitrogen. Nihon sanshigaku zasshi. 61(5). 463–465. 1 indexed citations

12.

Oka, Seibi, et al.. (1991). Survival and Shoot Formation in Vitro of Pear Winter Buds Cryopreserved in Liquid Nitrogen. HortScience. 26(1). 65–66. 16 indexed citations

13.

Niino, Takao & Seibi Oka. (1990). Plant regeneration from in vitro-grown mulberry shoot tips frozen in liquid nitrogen. Nihon sanshigaku zasshi. 59(2). 111–117. 1 indexed citations

14.

Oka, Seibi, et al.. (1982). SHOOT FORMATION IN EUCALYPTUS GLOBULUS HYPOCOTYL EXPLANTS. 1 indexed citations

15.

Oka, Seibi & Katsuo Ohyama. (1981). In vitro initiation of adventitious buds and its modification by high concentration of benzyladenine in leaf tissues of mulberry (Morus alba). Canadian Journal of Botany. 59(1). 68–74. 39 indexed citations

16.

Ohyama, Katsuo & Seibi Oka. (1980). Bud and root formation in hypocotyl segments of <italic>Broussonetia kazinoki</italic> Sieb. in vitro. Plant and Cell Physiology.

17.

Oka, Seibi & Katsuo Ohyama. (1976). A study on the medium for the subculture of mulberry callus. Nihon sanshigaku zasshi. 45(5). 385–391. 1 indexed citations

18.

Ohyama, Katsuo & Seibi Oka. (1976). Regeneration of whole plants from isolated shoot tips of mulberry trree. Nihon sanshigaku zasshi. 45(2). 115–120. 4 indexed citations

19.

Ohyama, Katsuo & Seibi Oka. (1975). Effect of abscisic acid and gibberellic acid on bud break in mulberry Plants. Nihon sanshigaku zasshi. 44(4). 321–326. 2 indexed citations

20.

Oka, Seibi & Katsuo Ohyama. (1974). Studies on in vitro culture of excised buds in mulberry tree. Nihon sanshigaku zasshi. 43(1). 230–235. 1 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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