African violet (Saintpaulia ionantha H. Wendl.): classical breeding and progress in the application of biotechnological techniques

Adisorn C., 2004. Lesson operating cytogenetic in agriculture. Department of Horticulture, Chiang Mai University, Thailand.Search in Google Scholar

Afkhami-Sarvestani R., Serek M., Winkelmann T., 2012a. Interspecific crosses within the Streptocarpus subgenus Streptocarpella and intergeneric crosses between Streptocarpella and Saintpaulia ionantha genotypes. Sci. Hortic. 148: 215-222.10.1016/j.scienta.2012.10.006Search in Google Scholar

Afkhami-Sarvestani R., Serek M., Winkelmann T., 2012b. Protoplast isolation and culture from Streptocarpus, followed by fusion with Saintpaulia ionantha protoplasts. Eur. J. Hortic. Sci. 77: 249-260.Search in Google Scholar

Ahloowalia B.S., Maluszynski M., 2001. Induced mutations - a new paradigm in plant breeding. Euphytica 118: 167-173.10.1023/A:1004162323428Search in Google Scholar

Anonymous., 2002. Saintpaulia self-pollination. African Violet Mag. 55(6): 39.Search in Google Scholar

Arisumi T., 1967. Dominant gene for anthocyanin in the leaf-blades of African violets. J. Hered. 58: 259-261. Arisumi T., 1964. Interspecific hybridization in African violets. J. Hered. 55: 181-183.10.1093/oxfordjournals.jhered.a107606Search in Google Scholar

Arisumi T., Frazier L.C., 1968. Cytological and morphological evidence for the single-cell origin of vegetatively propagated shoots in thirteen species of Saintpaulia treated with colchicine. Proc. Am. Soc. Hortic. Sci. 93: 679-685.Search in Google Scholar

Baatvik S.T., 1993. The genus Saintpaulia (Gesneriaceae) 100 years: History, taxonomy, ecology, distribution and conservation. Fragm. Flor. Geobot. Suppl. 2: 97-112.Search in Google Scholar

Bhaskaran S., Smith R.H., Finer J.J., 1983. Ribulose bisphosphate carboxylase activity in anther-derived plants of Saintpaulia ionantha Wendl. Shag. Plant Physiol. 73: 639-642.10.1104/pp.73.3.639Search in Google Scholar

Bourgis F., Guyot R., Gherbi H., Tailliez E., Amabile I., Salse J., Lorieux M., Delseny M., Ghesquière A., 2008. Characterization of the major fragrance gene from an aromatic japonica rice and analysis of its diversity in Asian cultivated rice. Theor. Appl. Genet. 117: 353-68.10.1007/s00122-008-0780-9Search in Google Scholar

Broertjes C., 1974. Production of polyploids by the adventitious bud technique. In: Polyploid and Induced Mutations in Plant Breeding, International Atomic Energy Agency, Vienna, PL-503(6): 29-34. Search in Google Scholar

Broertjes C., 1972. Use in plant breeding of acute, chronic or fractionated doses of X-rays or fast neutrons as illustrated with leaves of Saintpaulia. In: Agriculture Research Report-776. Centre for Agricultural Publishing and Documentation, Pudoc, Wageningen: 74.Search in Google Scholar

Broertjes C., 1971. Dose-fractionation studies and radiation-induced protection phenomena in African violet. In: Survival of Food Crops and Livestock in the Event of a Nuclear War. D.W. Benson and A.H. Sparrow (eds), Proc. Symp. Brookhaven Natl. Lab. Upton, 1970, U.S. Atomic Energy Commission, Oak Ridge, Tennessee: 325-342.Search in Google Scholar

Broertjes C., 1968. Mutation breeding of vegetatively propagated crops. Proc. 5th Eucarpia Congress, Milan: 139-165.Search in Google Scholar

Broertjes C., van Harten A.M., 1988. Applied Mutation Breeding for Vegetatively Propagated Crops. Elsevier, Amsterdam: 345.Search in Google Scholar

Cadic A., Widehem C., 2001. Breeding goals for new ornamentals. Acta Hort. 552: 75-86.10.17660/ActaHortic.2001.552.7Search in Google Scholar

Caro S.E., Stampfle J.M., Greene M.J., Kotarski M.A., 2006. Using a chalcone synthase gene to infer phylogenies in the genus Saintpaulia. Bios 77: 72-76.10.1893/0005-3155(2006)77[72:UACSGT]2.0.CO;2Search in Google Scholar

Charlesworth D., Charlesworth B., 1987. Inbreeding depression and its evolutionary consequences. Ann. Rev. Ecol. Syst. 18: 237-268.10.1146/annurev.es.18.110187.001321Search in Google Scholar

Chen J., Henny R.J., 2009. Cultural guidelines for commercial production of African violets (Saintpaulia ionantha) ENH 1096. Environmental Horticulture Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida, USA: 1-4.10.32473/edis-ep360-2009Search in Google Scholar

Clayberg C.D., 1961. Hybridizing with the African violet species. African Violet Mag. 15: 105-107. Search in Google Scholar

Datta S.K., Teixeira da Silva J.A., 2006. Role of induced mutagenesis for development of new flower colour and type in ornamentals. In: Floriculture, Ornamental and Plant Biotechnology: Advances and Topical Issues (1st Edn.), Chapter 71, Volume I. J.A. Teixeira da Silva (ed.), Global Science Books, Ltd., Isleworth, UK: 640-645.Search in Google Scholar

Deguchi A., Ohno S., Tatsuzawa F., Dio M., Hosokawa M., 2016. Identification of the yellow pigments in Saintpaulia flowers. Hort. Res. 15: 123-128.10.2503/hrj.15.123Search in Google Scholar

Duncan R.R., 1997. Tissue culture-induced variation and crop improvement. In: Advances in Agronomy (Vol. 58). D.L. Sparks (ed.), Academic Press, London: 201-210. 10.1016/S0065-2113(08)60256-4Search in Google Scholar

Eastwood A., Bytebier B., Tye H., Tye A., Robertson A., Maunder M., 1998. The conservation status of Saintpaulia. Curtis’s Bot. Mag. 15: 49-62. 10.1111/1467-8748.00132Search in Google Scholar

Ehrlich H., 1956. Cytological studies in Saintpaulia Wendl. (Gesneriacea) [sic]. Ph.D. thesis. University of Minnesota, USA.Search in Google Scholar

Ehrlich H., 1958. Cytological studies in Saintpaulia Wendl. (Gesneriaceae). Am. J. Bot. 45: 177-182. 10.1002/j.1537-2197.1958.tb12206.xSearch in Google Scholar

Espino F.J., Vazquez A.M., 1981. Chromosome numbers of Saintpaulia ionantha plantlets regenerated from leaves cultured in vitro with caffeine and colchicine. Euphytica 30: 847-853.10.1007/BF00038814Search in Google Scholar

Farjadi-Shakib M., Mousavi A., Naderi R., 2012. Optimization of chromosomal preparation and cytological analysis of in vitro cultured African violet (Saintpaulia ionantha Wendl.). Acta Hort. 937: 917-922.10.17660/ActaHortic.2012.937.113Search in Google Scholar

Gaj M., Gaj M.D., 1996. The high frequency of variegated forms after in vitro mutagenesis in Saintpaulia ionantha Wendl. Acta Soc. Bot. Pol. 65: 339-343.10.5586/asbp.1996.052Search in Google Scholar

Geier T., 1983. Induction and selection of mutants in tissue cultures of Gesneriaceae. Acta Hort. 131: 329-338. 10.17660/ActaHortic.1983.131.39Search in Google Scholar

Ghorbanzade Z., Ahmadabadi M., 2015. Stable transformation of the Saintpaulia ionantha by particle bombardment. Iran J. Biotechnol. 13: 11-16.10.15171/ijb.1037Search in Google Scholar

Goidanich G., Garavini C., 1959. Mortalità di Saintpaulia jonantha [sic] per infestazione di Melodogyne arenaria Thamesii. Riv. Ortoflorofrutticoltura Ital. 23: 81-86.Search in Google Scholar

Griesbach R.J., 1998. Flavonoids in Saintpaulia ionantha expressing the fantasy mutation. Phytochemistry 48: 829-830. 10.1016/S0031-9422(97)00985-0Search in Google Scholar

Grunewaldt J., 1983. In vitro mutagenesis of Saintpaulia and Pelargonium cultivars. Acta Hort. 131: 339-344. 10.17660/ActaHortic.1983.131.40Search in Google Scholar

Harrison C.J., Möller M., Cronk Q.C.B., 1999. Evolution and development of floral diversity in Streptocarpus and Saintpaulia. Ann. Bot. 84: 49-60. 10.1006/anbo.1999.0887Search in Google Scholar

Huang J., Zhang K., Shen Y., Huang Z., Li M., Tang D., et al., 2009. Identification of a high frequency transposon induced by tissue culture, nDaiZ, a member of the hAT family in rice. Genomics 93: 274-281.10.1016/j.ygeno.2008.11.007Search in Google Scholar

Hunter R.S., 1948. Photoelectric color-difference meter. J. Optical Soc. Amer. 38: 661. Search in Google Scholar

Itis -Integrated Taxonomic Information System. Available online at https://www.itis.gov/; cited on 20 May 2017.Search in Google Scholar

Jain S.M., 1993a. Somaclonal variation in Begonia × elatior and Saintpaulia ionantha L. Sci. Hort. 54: 221-231. 10.1016/0304-4238(93)90090-DSearch in Google Scholar

Jain S.M., 1993b. Studies on somaclonal variation in ornamental plants. Acta Hort. 336: 365-372.10.17660/ActaHortic.1993.336.48Search in Google Scholar

Jain S.M., 1997a. Micropropagation of selected somaclones of Begonia and Saintpaulia. J. Biosci. 22: 585-592.10.1007/BF02703396Search in Google Scholar

Jain S.M., 1997b. Creation of variability by mutation and tissue culture for improving plants. Acta Hort. 447: 69-77.10.17660/ActaHortic.1997.447.6Search in Google Scholar

Jensson L.K., Barrett S.C.H., 2002. Solving the puzzle of mirror-image flowers. Nature 417: 707.10.1038/417707aSearch in Google Scholar

Jiao Y., Chen J., Jia H.Y., Zhang K., Yang K., 2014. Cloning of flavonoid-3’5’-hydroxylase gene in Saintpaulia ionantha and expression analysis of transgenic Nicotiana tabacum. J. Beijing Univ. Agric. 29: 11-13.Search in Google Scholar

Kaeppler S.M., Kaeppler H.F., Rhee Y., 2000. Epigenetic aspects of somaclonal variation in plants. Plant Mol. Biol. 43: 179-188.10.1023/A:1006423110134Search in Google Scholar

Kelly J.W., Lineberger R.D., 1981. Thermal neutron induced changes in Saintpaulia. Environ. Exp. Bot. 21: 95-102.10.1016/0098-8472(81)90014-9Search in Google Scholar

Kolehmainen J., Korpelainen H., Mutikainen P., 2010. Inbreeding and inbreeding depression in a threathened endemic plant, the African violet (Saintpaulia ionantha ssp. grotei), of the East Usambara Mountains, Tanzania. Afr. J. Ecol. 48: 576-587.10.1111/j.1365-2028.2009.01141.xSearch in Google Scholar

Kolehmainen J., Mutikainen P., 2006. Reproductive ecology of three endangered African violet (Saintpaulia H. Wendl.) species in the East Usambara Mountains, Tanzania. Afr. J. Ecol. 44: 219-227.10.1111/j.1365-2028.2006.00635.xSearch in Google Scholar

Kondo E., Nakayama M., Kameari N., Tanikawa N., Morita Y., Akita Y., Hase Y., Tanaka A., Ishizaka H., 2009. Red-purple flower due to delphinidin 3,5-diglucoside, a novel pigment for Cyclamen spp., generated by ion-beam irradiation. Plant Biotechnol. 26: 565-569.10.5511/plantbiotechnology.26.565Search in Google Scholar

Krishna H., Alizadeh M., Singh D., Singh U., Chauhan N., Eftekhari M., Sadh R.H., 2016. Somaclonal variations and their applications in horticultural crops improvement. 3 Biotech. 6(1): 54. 10.1007/s13205-016-0389-7Search in Google Scholar

Kushikawa S., Hoshino Y., Mii M., 2001. Agrobacteriummediated transformation of Saintpaulia ionantha Wendl. Plant Sci. 161: 953-960.10.1016/S0168-9452(01)00496-4Search in Google Scholar

Kushikawa S., Miyoshi K., Mii M., 2002. Pre-culture treatment enhances transient GUS gene expression in leaf segment of Saintpaulia ionantha Wendl. after inoculation with Agrobacterium tumefaciens. Plant Biotechnol. 19: 149-152.10.5511/plantbiotechnology.19.149Search in Google Scholar

Larkin P.J., Scowcroft W.R., 1981. Somaclonal variation - a novel source of variability from cell cultures for plant improvement. Theor. Appl. Genet. 60: 197-214.10.1007/BF0234254024276737Search in Google Scholar

Lindqvist C., Albert V.A., 1999. Phylogeny and conservation of African violets (Saintpaulia; Gesneriaceae): New findings based on nuclear ribosomal 5S non-transcribed spacer sequences. Kew Bull. 54: 363-377.10.2307/4115813Search in Google Scholar

Lindqvist C., Albert V.A., 2001. A high elevation ancestry for the Usambara Mountains and lowland populations of African violets (Saintpaulia, Gesneriaceae). Syst. Geogr. Plants 71: 37-44.10.2307/3668751Search in Google Scholar

Lineberger R.D., Druckenbrod M., 1985. Chimeral nature of the pinwheel flowering African violets (Saintpaulia, Gesneriaceae). Am. J. Bot. 72: 1204-1212.10.1002/j.1537-2197.1985.tb08373.xSearch in Google Scholar

Loureiro J., Rodriguez E., Doležel J., Santos C., 2007. Two new nuclear isolation buffers for plant DNA flow cytometry: a test with 37 species. Ann. Bot. 100(4): 875-888.10.1093/aob/mcm152274962317684025Search in Google Scholar

Matsuda S., Sato M., Ohno S., Yang S.J., Doi M., Hosokawa J., 2014. Cutting leaves and plant growth regulator application enhance somaclonal variation induced by transposition of VGs1 of Saintpaulia. J. Jpn. Soc. Hortic. Sci. 83: 308-316.10.2503/jjshs1.MI-009Search in Google Scholar

Mercuri A., De Benedetti L., Burchi G., Schiva T., 2000. Agrobacterium-mediated transformation of African violet. Plant Cell Tiss. Org. Cult. 60: 39-46.10.1023/A:1006457716959Search in Google Scholar

Möller M., Cronk Q.C.B., 1997. Phylogeny and disjunct distribution: evolution of Saintpaulia (Gesneriaceae). Proc. Royal Soc. London B: Biol. Sci. 264: 1827-1836.10.1098/rspb.1997.025216887489447739Search in Google Scholar

Nishihara M., Shimoda T., Nakatsuka T., Arimura G. 2013. Frontiers of torenia research: innovative ornamental traits and study of ecological interaction networks through genetic engineering. Plant Methods 9: 23.10.1186/1746-4811-9-23370148123803155Search in Google Scholar

Ohki S., Hashimoto Y., Ohno M., 2009. Preliminary report on Agrobacterium-mediated genetic transformation of Begonia rex and Saintpaulia spp. Acta Hort. 829: 345-348. 10.17660/ActaHortic.2009.829.54Search in Google Scholar

Ono E., Fukuchi-Mizutani M., Nakamura N., Fukui Y., Yonekura-Sakakibara K., Yamaguchi M., Nakayama T., Tanaka T., Kusumi T., Tanaka Y., 2006. Yellow flowers generated by expression of the aurone biosynthetic pathway. Proc. Nat. Acad. Sci. USA 103: 11075-11080.10.1073/pnas.0604246103154417516832053Search in Google Scholar

Paek K.Y., Hahn E.J., 1999. Variations in African violet ‘Crimson Frost’ micropropagated by homogenized leaf tissue culture. HortTechnology 9: 625-629. 10.21273/HORTTECH.9.4.625Search in Google Scholar

Pei R.J., Chen X.Q., Sun N., Zhang N.N., Liu Y., Liu F.H., 2012. Petal cell pH value determination and F3’5’H gene fragment cloning of Saintpaulia ionantha. J. Tianjin Agri. Univ. 19: 11-14. Search in Google Scholar

Ram M.S.N., Mohandas S., 2003. Transformation of African violet (Saintpaulia ionantha) with glucanase-chitinase genes using Agrobacterium tumefaciens. Acta Hort. 624: 471-478.10.17660/ActaHortic.2003.624.65Search in Google Scholar

Sahijram L., 2014. Modifying DNA methylation pattern in embryos for application in horticultural crop improvement. In: Horticulture for Inclusive Growth, Westville Publishing House, New Delhi: 504-521.Search in Google Scholar

Sahijram L., 2015. Somaclonal variation in micropropagated plants. In: Plant Biology and Biotechnology (Vol. II) Plant Genomics and Biotechnology. B. Bahadur, M.V. Rajam, L. 10.1007/978-81-322-2283-5_21Search in Google Scholar

Sahijram, K.V. Krishnamurthy (eds), Springer, Heidelberg, Germany: 407-416. Search in Google Scholar

Samanta M.K., Dey A., Gayen S., 2016. CRISP/Cas9: an advanced tool for editing plant genomes. Transgenic Res. 25: 561-573.10.1007/s11248-016-9953-527012546Search in Google Scholar

Sato M., Hosokawa M., Doi M. 2011a. Somaclonal variation is induced de novo via the tissue culture process: A study quantifying mutated cells in Saintapulia. PLoS ONE 6: e23541.10.1371/journal.pone.0023541315493721853148Search in Google Scholar

Sato M., Kawabe T., Hosokawa M., Tatsuzawa F., Doi M., 2011b. Tissue culture-induced flower-color changes in Saintpaulia caused by excision of the transposon inserted in the flavonoid 3’, 5’ hydroxylase (F3’5’H) promoter. Plant Cell Rep. 30: 929-939.10.1007/s00299-011-1016-z21293860Search in Google Scholar

Seneviratne K.A.C.N, Wijesundara D.S.A., 2003. New African violets (Saintpaulia ionantha H. Wendl.) induced by colchicine. Curr. Sci. 87: 138-140.Search in Google Scholar

Seneviratne K.A.C.N., Wijesundara D.S.A., 2007. First African violets (Saintpaulia ionantha H. Wendl.) with a changing colour pattern induced by mutation. Am. J. Plant Physiol. 2: 233-236.10.3923/ajpp.2007.233.236Search in Google Scholar

Shajiee K., Tehranifar A., Naderi R., Khalighi A., 2006. Somaclonal variation induced de novo leaf chimeric mutants during in vitro propagation of African violet (Saintpaulia ionantha Wendl.). Acta Hort. 725: 337-340.10.17660/ActaHortic.2006.725.42Search in Google Scholar

Skog L.E., Boggan J.K., 2010. World checklist of Gesneriaceae. Washington, DC: Dept. of Botany, Smithsonian Institution. Sparrow A.H., Sparrow R.C., Schairer L.A., 1960. The use of X-rays to induce somatic mutations in Saintpaulia. African Violet Mag. 13: 32-37.Search in Google Scholar

Stewart D., Graciet E., Wellmer F., 2016. Molecular and regulatory mechanisms controlling floral organ development. FEBS J. 283: 1823-1830. 10.1111/febs.1364026725470Search in Google Scholar

Sugiura T., 1936. Studies on the chromosome numbers in higher plants, with special reference to cytokinesis. Cytologia (Tokyo) 7: 544-595.10.1508/cytologia.7.544Search in Google Scholar

Sun Y.J., Chen X.Q., Sun N., Chen J., Zhang L., 2010. Karyotype analysis of Saintpaulia ionantha. J. Tianjin Agri. Univ. 17: 5-8.Search in Google Scholar

Tatsuzawa F., Hosokawa M., 2016. Flower colors and their anthocyanins in Saintpaulia cultivars (Gesneriaceae). Hort. J. 85: 63-69.10.2503/hortj.MI-084Search in Google Scholar

Tatsuzawa F., Hosokawa M., Saito N., Honda T., 2012. Three acylated anthocyanins and a flavone glycoside in violet-blue flowers of Saintpaulia ‘Thamires’. S. Afr. J. Bot. 79: 71-76.10.1016/j.sajb.2011.12.001Search in Google Scholar

Teixeira da Silva J.A., Bolibok H., Rakoczy-Trojanowska M., 2007. Molecular markers in micropropagation, tissue culture and in vitro plant research. Genes, Genomes Genomics 1(1): 66-72.Search in Google Scholar

Teixeira da Silva J.A., Dewir Y.H., Wicaksono A., Kher M.M., Kim H.H., Hosokawa M., Zeng S., 2016a. Morphogenesis and developmental biology of African violet (Saintpaulia ionantha H. Wendl). J. Plant Dev. 23: 15-25.Search in Google Scholar

Teixeira da Silva J.A., Dobránszki J., Cardoso J.C., Chandler S.F., Zeng S.J., 2016b. Review: Methods for genetic transformation in Dendrobium. Plant Cell Rep. 35: 483-504.10.1007/s00299-015-1917-326724929Search in Google Scholar

Teixeira da Silva J.A., Zeng S.J., Wicaksono A., Kher M.M., Kim H.-H., Hosokawa M., Dewir Y.S., 2017. In vitro propagation of African violet: a review. S. Afr. J. Bot. (in press) DOI: 10.1016/j.sajb.2017.05.01810.1016/j.sajb.2017.05.018Open DOISearch in Google Scholar

The Plant List, 2017. Saintpaulia. Available online at: http://www.theplantlist.org/tpl1.1/search?q=Saintpaulia; cited on 20 May 2017.Search in Google Scholar

Tsukamoto Y., Maekawa S., Yamamoto K., Sasaki M., 1982. Saintpaulia. Bunka Publishing, Tokyo, Japan. Search in Google Scholar

van Harten A.M., 2007. Mutation Breeding: Theory and Practical Applications. Cambridge University Press, Cambridge, UK: 368.Search in Google Scholar

van Schaik N.W., Newlands G., 1963. The problem of breeding a red African violet. S. Afr. J. Sci. 59: 55-58. Search in Google Scholar

Vazquez A.M., Davey M.R., Short K.C., 1977. Organogenesis in culture of Saintpaulia ionantha. Acta Hort. 78: 249-258.10.17660/ActaHortic.1977.78.32Search in Google Scholar

Vogel S., 1978. Evolutionary shifts from reward to deception in pollen flowers. In: The Pollination of Flowers by Insects. A. Richards (ed.), Linn. Soc. Sym. Ser., Academic Press, London: 89-96.Search in Google Scholar

Wang L., Gao Q., Wang Y.Z., Lin Q.B., 2006. Isolation and sequence analysis of two CYC-like genes, SiCYC1A and SiCYC1B, from zygomorphic and actinomorphic cultivars of Saintpaulia ionantha (Gesneriaceae). Acta Phytotax. Sin. 44: 353-361.10.1360/aps050071Search in Google Scholar

Warfield D., 1973. Induction of mutations in African violet (Saintpaulia ionantha Wendl.) by ethylmethanesulfonate. HortScience 8: 29.10.21273/HORTSCI.8.1.29aSearch in Google Scholar

Winkelmann T., Grunewaldt J., 1995. Analysis of protoplast-derived plants of Saintpaulia ionantha H Wendl. Plant Breeding 114: 346-350.10.1111/j.1439-0523.1995.tb01247.xSearch in Google Scholar

Wongpiyasatid A., Jompuk P., Chusreeaeom K., Taychasinpitak T., 2007a. Effects of chronic gamma irradiation on adventitious plantlet formation of Saintpaulia ionantha (African violet) detached leaves. Kasetsart J. Nat. Sci. 41: 414-419.Search in Google Scholar

Wongpiyasatid A., Thinnok T., Taychasinpitak T., Jompuk P., Chusreeaeom K., Lamseejan S., 2007b. Effects of acute gamma irradiation on adventitious plantlet regeneration and mutation from leaf cuttings of African violet (Saintpaulia ionantha). Kasetsart J. Nat. Sci. 41: 633-640.Search in Google Scholar

Yang S.J., Hosokawa M., Hayashi T., Yazawa S., 2003. Wounding enhances rapid-browning responsiveness of distal unwounded leaves to water stimulus in Ruellia macrantha. J. Jpn. Soc. Hort. Sci. 72: 286-291.10.2503/jjshs.72.286Search in Google Scholar

Yang S.J., Hosokawa M., Hayashi T., Yazawa S., 2002. Leaf browning induced at sites distant from wounds in Acanthaceae and Gesneriaceae plants. J. Jpn. Soc. Hort. Sci. 71: 535-537.10.2503/jjshs.71.535Search in Google Scholar

Yang S.J., Hosokawa M., Mizuta Y., Yun J.G., Mano J., Yazawa S., 2001. Antioxidant capacity is correlated with susceptibility to leaf spot caused by a rapid temperature drop in Saintpaulia (African violet). Sci. Hort. 88: 59-69.10.1016/S0304-4238(00)00235-1Search in Google Scholar

Yang S.J., Kitamura Y., Hosokawa M., Yazawa S., 2006. Low temperature sensitivity enhanced by local wounding in Saintpaulia. J. Jpn. Soc. Hortic. Sci. 75: 476-480.10.2503/jjshs.75.476Search in Google Scholar

Ye Z.Q., Li J.H., Wang G.D., 2014. Agrobacteriummediated genetic transformation of AtTIP5;1 gene into Saintpaulia ionantha. Acta Bot. Occident. Sin. 34: 2412-2417.Search in Google Scholar

Yu W., Yau Y.Y., Birchler J.A., 2016. Plant artificial chromsome technology and its potential application in genetic engineering. Plant Biotech. J. 14: 1175-1182.10.1111/pbi.12466Search in Google Scholar

Yun J.G., Hayashi T., Yazawa S., 1997. Diurnal changes in leaf spot sensitivity of Saintpaulia (African violet). Sci. Hortic. 70: 179-186. 10.1016/S0304-4238(97)00019-8Search in Google Scholar

Zhou L.B., Li W.J., Ma S., Dong X.C., Yu L.X., Li Q., Zhou G.M., Gao Q.X., 2006a. Effects of ion beam irradiation on adventitious shoot regeneration from in vitro leaf explants of Saintpaulia ionahta [sic]. Nucl Instr. Methods Phys. Res. Sect. B 244: 349-353.10.1016/j.nimb.2005.10.034Search in Google Scholar

Zhou L.B., Li W.J., Ma S., Dong X.C., Li Q., Gao Q.X., 2006b. Effects of X-ray and electron beam irradiation on adventitious bud regeneration from in vitro leaf explants of Saintpaulia ionahta [sic]. J. Radiat. Res. Radiat. Process 24: 53-58.Search in Google Scholar