Effect of ethyl methanesulfonate on the fertility of barley

Sato, Mário Eidi; Gaul, H.

doi:10.1016/0033-7560(67)90028-2

Cited by 63 publications

(28 citation statements)

References 7 publications

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“…Most of the radiation induced sterility in M1 generation and further generations is probably haplontic according to Muntzing (1930). In contrast to this EMS-induced sterility appears to have diplontic nature, as was concluded in a study of Sato and Gaul (1967). The actual origin of EMS-induced sterility might be gene mutations or more probably "invisible deficiencies", the frequency of which may be relatively higher than after ionizing radiation.…”

Section: M Generationmentioning

confidence: 79%

Efficiency and Effectiveness of Gamma Rays and EMS in Rice

Rao¹

1977

CYTOLOGIA

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Section: M Generationmentioning

confidence: 79%

Efficiency and Effectiveness of Gamma Rays and EMS in Rice

Rao¹

1977

CYTOLOGIA

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“…The highest performance of 65mM observed for stem height and leaf area, as well as number of leaves, recorded best at 55mM were similar to the findings of Animasaun et al (2014) in Arachis hypogeal. This mutagenic reduction in seed germination could be due to delay or inhibition in physiological and biological processes necessary for seed germination which include; enzyme activity (Chrispeeds and Varner, 1976), hormonal imbalance (Ananthaswamy et al, 1971) and inhibition of mitotic process (Sato and Gaul, 1967). Azide ion plays an important role in inducing mutation by interacting with enzymes and DNA in the cell.…”

Section: Resultsmentioning

confidence: 99%

Genetic Variability on Tolerance of Maize (<i>Zea mays</i> L.) Genotypes Induced with Sodium Azide Mutagen

Olawuyi¹,

Okoli²

2017

mpb

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variability on tolerance of maize (Zea mays L.) genotypes induced with sodium azide mutagen, Molecular Plant Breeding, 8(3): 27-37 (doi: 10.5376/mpb.2017.08.0003) Abstract This study investigated the mutagenic variability of maize (Zea mays L.) genotypes induced with sodium azide (NaN3).The seeds of maize genotypes; TZE-WDTSTR C4, TZM 154, SAMMAZ 15, DTE-YSR BC3, EV99 QPM, DTSR COF2, TZM 146 and TZM 1441 were pre-soaked in distilled water for six hours before treated with 20ml of sodium azide at 35, 45, 55, and 65 mM for six hours. The untreated maize served as control. The seeds were sown on perforated polythene bags containing 7kg of soil with three replicates in a complete randomized design. The observations from seedling to maturity recorded albino, xantha and viridis mutant traits. The mitotic studies carried out on the root tips of the seedlings revealed chromosomal aberrations such as abnormal anaphase and metaphase and chromosomal deletion. There were variations among the genotypes for yield, morpho-agronomic traits and mutation tolerance. TZE-WDTSTR C4, TZM 154 and TZM 146 were early maturing genotypes. TZM 1441 and EV99 QPM were the most tolerant genotypes to mutagenic effect, while EV99 QPM performed best for percentage seed germination, ear aspect, husk cover and mutation tolerance. The mutation tolerance was positive and strongly correlated with agronomic and yield traits (days to first tasseling, tasseling length, plant stand, ear aspect, husk cover and number of cobs) compared to growth traits. The number of cobs produced is positive and strongly related with mutation tolerance at r = 0.77; p < 0.01, while the ear aspect is positive and strongly associated with husk cover, number of cobs and mutation tolerance at r = 0.86, 0.76 and 0.79 respectively. The first Principal Component Axis (Prin. 1) had the highest contribution to the variation of morphological, yield and mutation tolerance traits with proportion and Eigen value of 23.12% and 3.24 respectively, while Prin. 14 had the least contribution. Stem height, grain weight, shoot biomass and root biomass were closely related to mutation tolerance in Prin. 1 than other traits. Therefore, selection of the most tolerant genotypes to sodium azide (chemical mutagen) should be considered in breeding programmes.

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“…these effects together may hamper atP biosynthesis resulting in the decreased availability of atP, which may slow the germination rate and reduce the germination percentage. Various doses of treatment affected the survivability of seedlings in a dose dependent manner as shown in table 1. according to Sato andgaul (1967) andnatrajan andShivshankar (1965), the reduction in seedling survival can be attributed to cytogenetic damage and physiological disturbances caused by mutagen treatment. thus, the probable reason of the drop in seedling survivability may be the hindrance caused by the Sa and gamma rays on different metabolic pathways of the cells.…”

Section: Discussionmentioning

confidence: 99%

Efficiency and Effectiveness of Gamma Rays and Sodium Azide in <i>Sesbania cannabina</i> Poir.

Kumar

Srivastava

2013

CYTOLOGIA

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Summary Mutagenic effectiveness and efficiency is an important factor for the selection of a mutagen for a mutation breeding program. Mutagenic effectiveness is a measure of the frequency of mutations induced by a unit mutagen dose, while mutagenic efficiency is a measure of the proportion of mutations in relation to undesirable changes such as lethality, sterility, meiotic aberrations etc. The present study envisages the mutagenic effectiveness and efficiency of individual and combined treatments of chemical and physical mutagens i.e. sodium azide (individual), gamma rays (individual) and sodium azide+gamma ray (combined). For the individual treatment of sodium azide, the seeds of the Sesbania cannabina variety nD-1 were treated with 0.5% solution of sodium azide (Sa) for four different time durations, i.e. 3, 5, 7, and 9 h, and for the individual treatment of gamma rays, dry and healthy seeds were treated with 20, 40, 60, and 80 Kr doses of gamma rays. For the combined treatment, the seeds were exposed to four different doses of gamma rays (20, 40, 60, and 80 Kr) and after irradiation seeds were treated with 0.5% solution of sodium azide for 3 h. after treatment, seeds subjected to individual and combined treatment were sown in randomized block design to raise the M 1 generation and a study was conducted on germination percentage, survival percentage, pollen fertility percentage, and chromosomal aberrations at different doses of the individual and combined treatments.

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Effect of ethyl methanesulfonate on the fertility of barley

Cited by 63 publications

References 7 publications

Efficiency and Effectiveness of Gamma Rays and EMS in Rice

Efficiency and Effectiveness of Gamma Rays and EMS in Rice

Genetic Variability on Tolerance of Maize (<i>Zea mays</i> L.) Genotypes Induced with Sodium Azide Mutagen

Efficiency and Effectiveness of Gamma Rays and Sodium Azide in <i>Sesbania cannabina</i> Poir.

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