Biometric analysis of frequencies of spontaneous tumors in inbred lines of radish

Analysis of frequencies of tumors on radish roots in 34 radish lines over 8 - 16 years of growing (successive generators of inbreeding) was conducted. It was shown that in lines originated from the varieties Virovskii belyi (15 lines), Saxa (13 lines), and Ledyanaya sosul'ka (6 lines), frequenc...

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Published inGenetika (Russian Federation) Vol. 31; no. 9
Main Authors Narbut, S.I, Vojlokov, A.V, Rakhman, M.I, Maksimenko, O.E, Glotov, N.V
Format Publication
LanguageRussian
Published 1995
Subjects
ANALISIS ESTADISTICO
ANALYSE STATISTIQUE
ENDOGAMIA
INBREEDING
RACINE
RAICES
RAPHANUS SATIVUS
TRASTORNOS GENETICOS
TROUBLE GENETIQUE
VARIACION GENETICA
VARIATION GENETIQUE
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Summary:Analysis of frequencies of tumors on radish roots in 34 radish lines over 8 - 16 years of growing (successive generators of inbreeding) was conducted. It was shown that in lines originated from the varieties Virovskii belyi (15 lines), Saxa (13 lines), and Ledyanaya sosul'ka (6 lines), frequencies of spontaneous tumors form a continuous series randing from 1 to 100 %. All plants of the four lines VL-350, SL-337/24, SL-337/76, and SL-337/77 formed tumors every year. The remaining 30 lines vary in frequencies of tumor formation. A pedigree analysis evidenced that this variation was connected to growing conditions (year) rather than to segregation for the corresponding genes. A two-way analysis of variance (line and year), conducted over six years showed that differences between lines account for 83.0 % of total variability. Only 2.9 % of variation is related to growing conditions in different years. A bootstrap analysis demonstrated that in 29 lined with varying frequencies of tumors, a true confidence interval is higher on average by a factor of 1.48 for all lines than a binomial confidence interval. A median of tumor frequencies is 19.9 % for 15 lines of the variety Virovskii belyi, 19.6 % for 13 of the variety Saxa, and 4.8 % for 6 lines of the variety Ledyanaya sosul'ka, and the differences between lines of Virovsliii belyi and Ledyanaya sosul'ka are statistically significant and correlate with the differences in frequencies of spontaneous tumors typical for these varieties. The genetic basis of tumor formation in radish is discussed by comparing the results obtained with similar data on manifestation of morphological deviations (phenodeviations) in animal inbred lines
Bibliography:9608406
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