IMPACT OF PHYSICAL MUTAGENS ON THE MALE GAMETOPHYTE OF THE TEA PLANT FOR ITS FURTHER USE IN HYBRIDIZATION

Davit Baratashvili (), Nino Lomtatidze (), Guguli Dumbadze (), Neli Khalvashi () and Nino Kedelidze ()
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Davit Baratashvili: Batumi Shota Rustaveli State University, Faculty of Natural Sciences and Health Care,Department of Biology, Adjara
Nino Lomtatidze: Batumi Shota Rustaveli State University, Faculty of Natural Sciences and Health Care,Department of Biology, Adjara
Guguli Dumbadze: Batumi Shota Rustaveli State University, Faculty of Natural Sciences and Health Care,Department of Biology, Adjara
Neli Khalvashi: Batumi Shota Rustaveli State University, Institute of Phytopathology and Biodiversiry, Department of Biodiversity Monitoring and Conservation, Adjara
Nino Kedelidze: Batumi Shota Rustaveli State University, Adjara, Georgia, Faculty of Natural Sciences and Health Care,Department of Biology; Institute of Phytopathology and Biodiversiry, Department of Biodiversity Monitoring and Conservation, Adjara

CBU International Conference Proceedings, 2019, vol. 7, issue 0, 880-883

Abstract: The migration of the radioisotopes - P32 and S35 from the soil to the tea plant (flowers) was studied. It is shown that their accumulation intensity in pollen sacs increases in proportion to the dose and reaches its maximum in the P32 variant after using a 8.0 MBq / ml dose. The migration intensity was the lowest in the 2.0 MBq / ml variant (0.14-0.223 MBq / 100 mg). It is estimated that P32 and S35 have significantly affected the vitality of tea plant pollens through the anomalies of their development. After using 2.0 and 4.0 MBq / ml doses, the vitality of the pollen is reduced in proportion to the dose and the development anomalies increase. Particulalry, the viability of pollen decrease compared to the control group, but the frequency and range of development anomalies increases. These include the slow development of the plant or the acceleration of the development of the primary nucleus, polyspermia, undeveloped pollen tube, etc. The use of processed P32 and S35 tea pollens in hybridization significantly increases the frequency of new formations and results in variability in the domination of signs. Among the new formations include the induction of haploids and triploids. Classification-JEL:

Keywords: radioisotope; hybridization; domination; anomaly; gametophyte (search for similar items in EconPapers)
Date: 2019
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Persistent link: https://EconPapers.repec.org/RePEc:aad:iseicj:v:7:y:2019:i:0:p:880-883

DOI: 10.12955/cbup.v7.1469

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