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Genotype dependent radiosensitivity of autotetraploids in Trigonella foenum-graecum L

Abstract

Different diploids of Trigonella foenum-graecum L. and their corresponding autotetraploids were seedtreated with 40 krad of ..gamma..-rays, and parameters such as germination, survival, growth reduction, pollen fertility, pod setting, etc. were recorded. A stimulation of seed germination due to the irradiation could be observed. Contrary to the general rule that polyploids are more radioresistant than their corresponding diploids, one 4x strain was completely killed while the 2x version survived comparatively well. Apparently gene reduplication is not the overall protective mechanism as was once earlier believed. The importance of genotypic influence on radiosensitivity was demonstrated at both the 2x and 4x level. The limitation of interphase chromosome volume and degree of ploidy in predicting radiosensitivity is discussed.
Publication Date:
Jan 01, 1980
Product Type:
Journal Article
Reference Number:
EDB-82-060511
Resource Relation:
Journal Name: Theor. Appl. Genet.; (Germany, Federal Republic of); Journal Volume: 58:5
Subject:
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; DIPLOIDY; RADIOSENSITIVITY EFFECTS; FERTILITY; BIOLOGICAL RADIATION EFFECTS; GERMINATION; PLANT GROWTH; POLYPLOIDY; GAMMA RADIATION; GENOTYPE; IRRADIATION; MUTANTS; PLANTS; POLLEN; SEEDS; STIMULATION; SURVIVAL CURVES; BIOLOGICAL EFFECTS; ELECTROMAGNETIC RADIATION; GAMETES; GERM CELLS; GROWTH; IONIZING RADIATIONS; PLOIDY; RADIATION EFFECTS; RADIATIONS; 560141* - Radiation Effects on Plants- Basic Studies- (-1987)
OSTI ID:
5677093
Country of Origin:
Germany
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: THAGA
Submitting Site:
DE
Size:
Pages: 237-239
Announcement Date:
Jan 01, 1982

Citation Formats

Raghuvanshi, S S, and Singh, A K. Genotype dependent radiosensitivity of autotetraploids in Trigonella foenum-graecum L. Germany: N. p., 1980. Web.
Raghuvanshi, S S, & Singh, A K. Genotype dependent radiosensitivity of autotetraploids in Trigonella foenum-graecum L. Germany.
Raghuvanshi, S S, and Singh, A K. 1980. "Genotype dependent radiosensitivity of autotetraploids in Trigonella foenum-graecum L." Germany.
@misc{etde_5677093,
title = {Genotype dependent radiosensitivity of autotetraploids in Trigonella foenum-graecum L}
author = {Raghuvanshi, S S, and Singh, A K}
abstractNote = {Different diploids of Trigonella foenum-graecum L. and their corresponding autotetraploids were seedtreated with 40 krad of ..gamma..-rays, and parameters such as germination, survival, growth reduction, pollen fertility, pod setting, etc. were recorded. A stimulation of seed germination due to the irradiation could be observed. Contrary to the general rule that polyploids are more radioresistant than their corresponding diploids, one 4x strain was completely killed while the 2x version survived comparatively well. Apparently gene reduplication is not the overall protective mechanism as was once earlier believed. The importance of genotypic influence on radiosensitivity was demonstrated at both the 2x and 4x level. The limitation of interphase chromosome volume and degree of ploidy in predicting radiosensitivity is discussed.}
journal = []
volume = {58:5}
journal type = {AC}
place = {Germany}
year = {1980}
month = {Jan}
}