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Study on Mutagenic Effect of Cobalt-60 Irradiation on Potato 被引量:3
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作者 江芹 廖华俊 +3 位作者 董玲 宁志怨 石景 李卫文 《Agricultural Science & Technology》 CAS 2013年第4期602-605,共4页
[Objective] This study aimed to investigate the mutagenic effect of cobalt- 60 irradiation on potato. [Method] Potato tubers of Favorita and Zhongshu No.3 were irradiated with 5, 10, 20, 30, 50 and 70 Gy of cobalt-60 ... [Objective] This study aimed to investigate the mutagenic effect of cobalt- 60 irradiation on potato. [Method] Potato tubers of Favorita and Zhongshu No.3 were irradiated with 5, 10, 20, 30, 50 and 70 Gy of cobalt-60 γ-ray respectively, to explore the mutagenic effect of different doses of γ-ray heavy ion irradiation on potato. [Result] The results showed that the emergence rate, seedling rate, plant growth, yield and commodity of potato varied after irradiated with different doses of cobalt-60 γ-ray; 10Gy of cobalt-60 irradiation played a positive effect on the growth and development of potato, while high doses played a negative effect on the growth and development of potato. After cobalt-60 irradiation, the botanical traits of M1 gen- eration varied greatly, resulting in a number of beneficial mutation traits; some traits of M2 and M3 generations became stably inherited. [Conclusion] Cobalt-60 irradiation breeding is conducive to the variety improvement and germplasm innovation as an effective means of genetic improvement for potato. 展开更多
关键词 Cobalt-60 irradiation Potato tubers Mutagenic effect
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Study on Mutagenic Effect of Space Flight in Two-line Sterile Rice 被引量:1
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作者 杨震 彭选明 +2 位作者 彭伟正 庞爱军 庞伯良 《Agricultural Science & Technology》 CAS 2009年第4期105-107,174,共4页
Seeds of two-line sterile rice cultivars Zhu 1S and Lu 18S were carried into space by "Shijian 8" breeding recoverable satellite, then planted in ground. Mutagenic effects from space induction were compared with tho... Seeds of two-line sterile rice cultivars Zhu 1S and Lu 18S were carried into space by "Shijian 8" breeding recoverable satellite, then planted in ground. Mutagenic effects from space induction were compared with those from y-irradiation and complex processing of space induction and y-irradiation. The results showed that agronomic effect was stimulated in Mo progenies of the two-line sterile rice varieties treated by space flight, and their radiosensitivities to the irradiation of space flight performed non-sensitive. The order of mutation frequency was determined to be SP + γ 〉 γ 〉 SP in M2 generation. And a series of mutated elites(individuals) were screened. Physiological indices of mutants screened like the activity of protective enzymes were measured to explore the physiological and biochemical basis of biological effect in space environment to two-line sterile rice. The results of this study show that space mutation breeding is an effective novel mean for breeding. 展开更多
关键词 Space flight y-irradiation Complex process Two-line sterile variety Mutagenic effects
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Mutagenic Effect of ^(60)Co γ-rays Irradiation on Turf Characteristics of Buchloe dactyloides (Nutt.) Engelm. 被引量:1
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作者 庞帝琼 李健 +2 位作者 张蕴薇 于晓丹 杨富裕 《Agricultural Science & Technology》 CAS 2012年第6期1247-1250,1269,共5页
[Objective] This study aimed to investigate the mutagenic effect of 60 Co γ-rays irradiation on turf characteristics of Buchloe dactyloides (Nutt.) Engelm. [Method] Buffalo grass were irradiated with 60 Co γ-rays ... [Objective] This study aimed to investigate the mutagenic effect of 60 Co γ-rays irradiation on turf characteristics of Buchloe dactyloides (Nutt.) Engelm. [Method] Buffalo grass were irradiated with 60 Co γ-rays at five different radiation intensities (1 200, 1 400, 1 600, 1 800, 2 000 Gy) to determine the related turf characteristics and analyze the mutagenic effect of 60 Co γ-rays at different radiation intensities on buffalo grass. [Result] Germination rates of buffalo grass irradiated by different radiation intensities of 60 Co γ-rays varied inconsistently, and the root length and bud length were shorter than the control; compared with the control, the height of irradiated seedlings was significantly reduced, and the number of tillers, plant height, leaf length and leaf blade width were smaller than the control; however, the stolon length, stolon diameter and number of stolon nods had no significant difference compared with the control. [Conclusion] This study laid foundation for determining the appropriate radiation intensity of 60 Co γ-rays and selecting useful mutants of buffalo grass. 展开更多
关键词 Buffalo grass 60 Co γ-rays Turf characteristics Mutagenic effect
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A Comparative Study on Mutagenic Effects of Space Flight and Irradiation of γ-rays on Rice 被引量:10
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作者 WEI Li-jun XU Jian-long +5 位作者 WANG Jun-min YANG Qian LUO Rong-ting ZHANG Ming-xian BAO Gen- liang SUN Ye-qing 《Agricultural Sciences in China》 CAS CSCD 2006年第11期812-819,共8页
The experiment was conducted to study the mutagenic effects of space environment on seedling growth in M1 generation and plant height and heading date in M2 generation in rice. Two types of lines of growth promotion ... The experiment was conducted to study the mutagenic effects of space environment on seedling growth in M1 generation and plant height and heading date in M2 generation in rice. Two types of lines of growth promotion (GP) and growth suppression (GS) were selected from the recombinant inbred lines (RILs) derived from a cross between a sensitive japonica Lemont and a nonsensitive indica Teqing to compare the mutation frequency and mutagenic efficiency for plant height and heading date in the M2 generation. Space environment resulted in 34.9% higher seedling height (SH) in the GP group than in the control, and 39.1% lower in the GS group than in the control, and there was no difference in seed fertility (SF) between the two groups. In M2, mutants of plant height and heading date can be induced by space treatment in both the two groups with lower mutation frequency and mutagenic efficiency in the GP group than in the GS group. There were no significant differences in the physiological damages in M1 between the two groups after γ-rays irradiation treatment. Mutation frequency and mutagenic efficiency of heading date in M2 were higher in the GS group than in the GP group, and the opposite was true for mutagenic efficiency of plant height although the mutation frequency varied between the two groups. The mutation frequencies of plant height and heading date induced by space environment were obviously lower than those by γ-rays irradiation, but the mutagenic efficiency was the opposite for most of the traits. For the GP and GS of seedlings induced by space environment, the GS had higher mutation frequency and mutagenic efficiency for plant height and heading date than the GP in M2. 展开更多
关键词 RICE space environment-induced mutation mutagenic effect physiological damage mutation breeding
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Mutagenic Effects of BM302:GO112 Induced by Low-Energy Ion Beam Implantation
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作者 赵世光 汤明礼 +4 位作者 王军 王陶 王顺昌 吴跃进 余增亮 《Plasma Science and Technology》 SCIE EI CAS CSCD 2007年第4期508-512,共5页
Mutant strains of GO112 and BM302 with a high 2-keto-L-gulonic acid (2KLG) transformation rate induced by ion beam implantation were separately and combinatorially compared with the original strains GO29 and BM80 to... Mutant strains of GO112 and BM302 with a high 2-keto-L-gulonic acid (2KLG) transformation rate induced by ion beam implantation were separately and combinatorially compared with the original strains GO29 and BM80 to study the mutagenic effects of ion beam implantation. Both the sole GOl12 and mixed BM302:GOl12 demonstrated improved SNDH activity and 2KLG yield compared to the original strains. The mutant combinations of BM302:GOl12 showed a longer stationary phase and higher biomass than BM80:GO29. The mutant BM302 exhibited a stronger capacity to maintain a stable pH environment at mixed fermentation with Gluconobacter oxydans (G. oxydans) for 2KLG transformation and facilitated the growth of G. oxydans compared with the original strain BM80. The promotive capacity to L-sorbosone dehydrogenase (L-SNDH) from the supernate of BM302 was 1.6-fold higher than that of BM80. Genes encoded SNDH in GO29 and GOl12 were amplified and sequenced, and mutations including three transitions (CG →TA, CG →TA, GC → AT) and one transversion (AT→ TA) were confirmed from GO29 to GOl12. The corresponding amino acid was changed as Leu →Phe, Arg → Gln and Asn → Lys. 展开更多
关键词 mutagenic effects of ion beam implantation BM302:GO112 physiological variation L-sorbosone dehydrogenase MUTATION
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Effect of Diallyl Trisulfide on Induction of UDS by Mutagenic Drugs in Primary Rat Hepatocytes
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作者 DENGDa-Jun KerstlnMUELLER 《Biomedical and Environmental Sciences》 SCIE CAS CSCD 1994年第1期85-90,共6页
Mosl of anticancer drugs are mutagenic. A possible exeeption is diallyl .trisulfide(DAT ), a component of garlic. It is an antimutagenic anticunccr chemical although it ismainly uscd as antibiotic. Its modifying eff... Mosl of anticancer drugs are mutagenic. A possible exeeption is diallyl .trisulfide(DAT ), a component of garlic. It is an antimutagenic anticunccr chemical although it ismainly uscd as antibiotic. Its modifying effeci on induction of UDS by mutagenicmitomycin C (MMC), cyclophosphamide (CP) and cis-diamine dichloroplatin (DDP) was invcstigiltcd with the UDS assay in the primary cultures of Wistar rat hepatocytes (hpc)using the autoradiographic technique. Resultsshowed that 1.0-4.0 nmol/ml of DAT didnot inducc UDS and that MMC, CP and DDP resulted in a significant induction ofdosc-dependent UDS. DAT enhanced induction of UDS by these drugs. A dose-effectrclationship was observed betwecn dose of DAT and enhancement of induction of UDS.Howcvcr, thc mcchanism of the enhancement is not clear. 展开更多
关键词 effect of Diallyl Trisulfide on Induction of UDS by Mutagenic Drugs in Primary Rat Hepatocytes UDS
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Study on mutagenic effects of rice seeds irradiated by CO_2 laser
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作者 LUO Rongting ZHANG Mingxing Inst for Application of Atomic Energy,Zhejiang Acad of Agri Sci,Hangzhou 310021,China 《Chinese Rice Research Newsletter》 1998年第1期6-7,共2页
Seeds of japonica rice (cv. Zhenuo 2) at twodifferent physiological states (dry seeds withwater content 13% and wet seeds soaked inthe water for 36 h) were irradiated by COlaser in four different power-densities. Thes... Seeds of japonica rice (cv. Zhenuo 2) at twodifferent physiological states (dry seeds withwater content 13% and wet seeds soaked inthe water for 36 h) were irradiated by COlaser in four different power-densities. Theseeds irradiated by 200GY ofCo γ rays andno radiated seeds were used as the controls.Results showed that the biological effects 展开更多
关键词 Study on mutagenic effects of rice seeds irradiated by CO2 laser CO
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