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Callus Induction and Regeneration from Anther Cultures of Indonesian Indica Black Rice Cultivar

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Abstract

The assembly of superior varieties and collection of rice germplasm involves the process of selecting and storing elders that have superior genotypic properties and phenotypes. The anther culture techniques on indica black rice cultivar have a high difficulty factor to get plants, because of the low regeneration ability at the plant formation phase from the anther callus. This study aimed to investigate the influence of the cold-pretreatment time on anther, the combination of plant growth regulators (PGR’s) concentrations, and putrescine concentrations in media for the increase callus induction and plant regeneration of indica black rice. The optimization of the cold pre-treatment time was important to obtain the high-frequency callus induction, which showed that anther at the 4°C for 8 days formed the high callus induction (20%). To accelerate the callus induction, the application of 20 µM putrescine in the MS medium could produce more friable embryogenic callus for 24 days with 27% of callus formation. Generally, the optimal medium for the high frequency of callus induction contained 2 mgL−1 NAA+0.5 mgL−1 Kinetin+20 µM putrescine. Especially indica black rice cultivars, the best media to get a high plant regeneration frequency were N6 media containing the combination of 2 mgL−1 IAA and 2,5 mgL−1 Kinetin. The total callus regenerated to plantlet about 12.5%. The study of the callus induction and in-vitro plant regeneration medium for indica black rice were still important to develop to get the best result for other cultivars.

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Acknowledgements

This research was supported by the Ministry of Research, Technology and Higher Education of the Republic of Indonesia, Directorate General Strengthening Research and Development, Directorate of Research and Community Service, Magister Thesis Research Grant Num: 061/SP2H/LT/DRPM/2019. Great thank to Plant Molecular Breeding (PMB) laboratory, Kyungpook National University for the supporting facilities in this research.

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Correspondence to Kyung-Min Kim or Tri Handoyo.

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The Ministry of Research, Technology and Higher Education of the Republic of Indonesia, Directorate General Strengthening Research and Development, Directorate of Research and Community Service, Magister Thesis Research Grant Num: 061/SP2H/LT/DRPM/2019.

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All datasets and software used to support the conclusions of this article are available and can be accessed through correspondents.

Author’s contributions statement

A. Maharani: performed cultivation, callus induction, and data analysis.

W.I.D. Fanata: second supervisor and contributed to the dicussion.

F.N. Laeli: performed the plant regeneration and data analysis.

K.M. Kim: supported facilities during research in his laboratory and contributed to the discussion, kkm@knu.ac.kr.

T. Handoyo: performed experiments, contributed to the discussion, corresponding author and supervising professor of A. Maharani and F.N. Laeli, trihandoyo.faperta@unej.ac.id

Competing interests

The authors declare that they have no competing interests.

Novelty statement

Indonesia is one of the countries that have a lot of germplasm and produces rice in the most worldwide. Especially, black rice still has great potential for the development of antioxidant-rich rice new varieties that have high economic value on the world market. Indica black rice is a recalcitrant seed type, it was very difficult to callus induction and plant regeneration. However, the successfully of anther culture technique depend on some factors, including anther cold pre-treatment, plant growth regulators and polyamine. the Anther culture technique is an alternative to the development of new black rice varieties to obtain plants with high homozygosity thread. This study aimed to investigate the influence of the cold-pretreatment time on anther, the combination of plant growth regulators (PGR’s) concentrations, and putrescine concentrations in media for the increase callus induction and plant regeneration of indica black rice.

Abbreviations

PGR’s, Plant Growth Regulators; Put, Putrescine; Kin, Kinetin; NAA, Naphtalene Acetic Acid, IAA, Indole Acetic Acid; HB, Hitam Bantul; dap, days after planting

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Maharani, A., Fanata, W.I.D., Laeli, F.N. et al. Callus Induction and Regeneration from Anther Cultures of Indonesian Indica Black Rice Cultivar. J. Crop Sci. Biotechnol. 23, 21–28 (2020). https://doi.org/10.1007/s12892-019-0322-0

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  • DOI: https://doi.org/10.1007/s12892-019-0322-0

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