Abstract:
In Western Siberia, intense flowering of Fragaria vesca occurs in the first ten days of June and fruiting takes place from the end of June till early July. During our expeditions investigating natural Fragaria vesca L. populations of Western Siberia in 2002–2013, we registered cases of reflowering, or repeated flowering in August-October. The paper concerns the genetic control of re-flowering in natural populations of Fragaria vesca. The study was conducted with accessions collected in the expeditions and seedlings grown from seeds taken in August-October from natural populations of woodland strawberry reflowering. Genetic analysis of seedlings obtained by self-pollination of collected accessions was also made. It involved 1486 seedlings from plants with seasonal fruiting (representing 32 Western Siberian populations) and 856 seedlings from 10 populations showing reflowering and refruiting. Genetic analysis of reflowering Fragaria vesca plants growing in natural conditions showed that they were usually homozygous for the dominant allele of seasonal fruiting. Reflowering in Fragaria vesca in Western Siberia is considered to be a provisional response of the genotype to certain growth conditions specific for a particular vegetation season. The only woodland strawberry population in the foothills of Kuznetsk Alatau displayed plants heterozygous for fruiting habit. Segregation in the progeny of self-fertilized plants from this population evidences monogenic control of day neutrality with a recessive type of inheritance. Its nature is similar to that in Alpine Fragaria vesca populations.
About The Author:
S. O. Baturin. Institute of Cytology and Genetics SB RAS, Novosibirsk, Russia, Russian Federation
References:
1. Vedernikova O.P., Dubrovnaya S.A. Ontogenez zemlyaniki lesnoĭ. Ontogeneticheskiĭ atlas lekarstvennykh rasteniĭ (Pod red. L.A. Zhukovoĭ). Ĭoshkar-Ola, 1997;196-202.
2. Zaĭtsev G.N. Metodika biometricheskikh raschetov. Matematicheskaya statistika v eksperimental’noĭ botanike. M.: Nauka, 1973.
3. Zhmylev P.Yu., Karpukhina E.A., Zhmyleva A.P. Vtorichnoe tsvetenie: induktsiya i narusheniya razvitiya. Zhurn. obshch. biologii. 2009;70(3):262-272.
4. Lozina-Lozinskaya A.S. Obzor vidov roda Fragaria. Izv. GBS SSSR. 1926;25:1:47-86.
5. Smagin V.N., Il’inskaya S.A., Nazimova D.I., Novosel’tseva I.F., Cherednikova Yu.S. Tipy lesov Yuzhnoĭ Sibiri. Novosibirsk: Nauka, 1980.
6. Sukhareva N.B. Sibirskie i dal’nevostochnye zemlyaniki. Apomiksis i ego znachenie dlya evolyutsii i selektsii. Novosibirsk: Nauka, 1976;165-175.
7. Fadeeva T.S. Genetika zemlyaniki. L., 1975.
8. Yuzepchuk S.V. Podsemeĭstvo Rosoidaceae. Flora SSSR. M.; L.: Izd-vo AN SSSR, 1941;58-69.
9. Ausín I., Alonso-Blanco C., Martinez-Zapater M. Environmental regulation of flowering. Int. J. Dev. Biol. 2005;49:689-705. DOI: 10.1387/ijdb.052022ia
10. Brown T., Wareing P.E. The genetical control of the everbearing habit and three other characters in varieties of Fragaria vesca. Euphytica. 1965;14:97-112.
11. Darrow G.M. The Strawberry History, Breeding and Physiology. N.Y.: Hort. Rinehart and Winston, 1966.
12. Dennis E.S., Peacock W.J. Epigenetic regulation of flowering. Curr. Opin. Plant Biol. 2007;10:520-527. DOI: 10.1016/j.pbi.2007.06.009
13. Hytönen T. Regulation of Strawberry Growth and Development. Acad. Dissertation. Helsinki: Helsinki Univ. Print, 2009.
14. Rantanen M., Kurokura T., Mouhu K., Pinho P., Tetri E., Halonen L., Palonen P., Elomaa P., Hytönen T. Light quality regulates flowering in FvFT1/FvTFL1 dependent manner in the woodland strawberry Fragaria vesca. Frontiers in Plant Sci. 2014;5:271. Available at:http://journal.frontiersin.org/Journal/10.3389/fpls.2014.00271/pdf. DOI: 10.3389/fpls.2014.00271
15. Richardson C.W. A preliminary note on the genetics of Fragaria. J. Genet. 1914;3:171-177.
16. Sønsteby A., Heide O.M. Long-day rather than autonomous control of flowering in the diploid everbearing strawberry Fragaria vesca ssp. semperflorens. J. Hort. Sci. Biotech. 2008;83:360-366.
17. Staudt G. The species of Fragaria, their taxonomy and geographical distribution. Inter. Strawberry Symp. Acta Hort. 1989;1(265): 23-33.
