Effect of gamma irradiation on germination, growth, and biochemical parameters of Terminalia arjuna Roxb

Akshatha,; Chandrashekar, K. R.; Somashekarappa, H.M.; Souframanien, J.

doi:10.4103/0972-0464.121826

Cited by 58 publications

(22 citation statements)

References 3 publications

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“…There were three ways of that reasons : 1) DNA is required for and is previously synthesized sequently to auxin formation, and gamma rays block occuring nucleic acid formation; 2) primary gamma rays block is in auxin synthesis, the auxin required for DNA formation; and 3) effect of gamma rays is on an undefined entity in reaction previous to and essential for both DNA and auxin synthesis [37]. The biological effect of gamma rays is also mainly due to the formation of free radicals by water hydrolisis, and results in modulation of antioxidative system, and accumulation of phenolic compounds and chlorophyll pigments [38]. However, these radicals can damage or modify important components of plant cell and affect differentially the biochemistry, physiology, anatomy, and morphology of plants [39].…”

Section: Results and Discusionsmentioning

confidence: 99%

Mutagenic effects of gamma rays on soybean (Glycine max L.) germination and seedlings

Kusmiyati

Sutarno

Sas

et al. 2018

IOP Conf. Ser.: Earth Environ. Sci.

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Abstract. Narrow genetic diversity is a main problem restricting the progress of soybean breeding. One way to improve genetic diversity of plant is through mutation. The purpose of this study was to investigate effect of different dose of gamma rays as induced mutagen on physiological, morphological, and anatomical markers during seed germination and seedling growth of soybean. Seeds of soybean cultivars Dering-1 were irradiated with 11 doses of gamma rays (0, 5, 10, 20, 40, 80, 160, 320, 640, 1280, and 2560 Gy [Gray]. The research design was arranged in a completely randomized block design in three replicates. Results showed that soybean seed exposed at high doses (640, 1280, and 2560 Gy) did not survive more than 20 days, the doses were then removed from anatomical evaluation. Higher doses of gamma rays siginificantly reduced germination percentage at the first count and final count, coefficient of germination velocity, germination rate index, germination index, seedling height and seedling root length, and significantly increased mean germination time, first day of germination, last day of germination, and time spread of germination. However, the effects of gamma rays were varies for density, width, and length of stomata. The LD 50 obtained based on survival percentage was 314.78 Gy. It can be concluded that very low and low doses of gamma rays (5-320 Gy) might be used to study the improvement of soybean diversity.

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Section: Results and Discusionsmentioning

confidence: 99%

Mutagenic effects of gamma rays on soybean (Glycine max L.) germination and seedlings

Kusmiyati

Sutarno

Sas

et al. 2018

IOP Conf. Ser.: Earth Environ. Sci.

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“…This effect, with reference to seed germination, has been observed in many species, more recently in Pterocarpus santalinus [14] and Terminalia arjuna [15]. Radiation may be more stimulatory for wet rather than dry seeds [16].…”

Section: Seed Germinationmentioning

confidence: 97%

Response of Datura innoxia Linn. to Gamma Rays and Its Impact on Plant Growth and Productivity

Aref

Khan

Sahli

et al. 2015

Proc. Natl. Acad. Sci., India, Sect. B Biol. Sci.

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Dry scarified seeds of Datura innoxia Linn. were gamma-irradiated with 5, 10, 20, 40, 60 and 80 Gy radiation, using a cobalt-60 source at the rate of 0.623 Gy min -1 at room temperature, and germinated on MS-medium in a growth chamber under controlled conditions. Exposure to low dose(s) of radiation (5 Gy) caused stimulatory effect on seed germination. Analysis of 90-dayold seedlings revealed that growth rate of root and shoot, net photosynthetic rate (P N ), stomatal conductance (gs) and the chlorophyll and carotenoid contents increased with 5 Gy radiations. Higher doses proved inhibitory for all the above parameters; the decline observed was positively correlated with increase in intensity of gamma radiation. Intercellular CO 2 (Ci), on the other hand, showed an opposite trend, being lower with 5 Gy than in the control, but significantly higher with increased radiation doses. Hyoscyamine, a tropane alkaloid, exhibited only irregular and non-significant variation in its content, with no perceptible change in structure, in the treated material, indicating that gamma-irradiation caused no significant alteration in the quantity or quality of the compound.

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“…The primary damage induced by ionizing radiation is modified in the enzymatic repair processes (Alikamanoglu et al, 2007). Lower doses of γ-irradiation (0-200 Gy) might facilitate better germination, growth and development when all the barriers are overcome, including dormancy in Terminalia arjuna (Roxb), Akshatha et al (2013). Gamma irradiation at the levels of 30 or 60 Gy affected the stem diameter.…”

Section: Discussionmentioning

confidence: 99%

Influence of pre-sowing treatments by gamma rays on growth, yield and some chemical constituents of <em>Sesamum indicum</em> L.

Hussein¹,

Hamideldin²

2016

Grasas y Aceites

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SUMMARY:The present work aims to improve the quantity and quality of seeds and/or seed oil by using low doses of radiation. Sesame seeds were exposed to γ-rays at levels of 30, 60 and 90 Gy. The results show that 30, 60 and 90 Gy doses activated most of growth and yield parameters significantly (weight of plant, number of capsules, weight of capsules/plant and weight of seeds/plant), with 60 Gy being the best dose. With regard to the total oil percentage in the produced crops, few changes have been observed, which did not reach the level of significance. The amount of unsaturated fatty acid (18:1, omega 9) was increase by 10.5% at a 30 Gy dose followed by 60 Gy (1.1%). The total of amino acid content showed that 30 Gy dose recorded the highest value (350.4 mg·g ). The values of phosphorus, potassium magnesium and iron which represent the major minerals in sesame seeds were increased in the irradiated samples.KEYWORDS: Amino acids; Fatty acid; γ-rays; Minerals; Oil content; Sesame RESUMEN: Influencia de tratamientos con rayos gamma en la presiembra sobre el crecimiento, rendimiento y algunos componentes químicos de Sesamum indicum L. El presente trabajo tiene como objetivo mejorar la cantidad y la calidad de las semillas y/o aceite de semillas mediante el uso de dosis bajas de radiación. Las semillas de sésamo se expusieron a rayos γ-a niveles de 30, 60 y 90 Gy. Los resultados mostraron que las dosis de 30, 60 y 90 Gy activan significativamente la mayor parte de los parámetros de crecimiento y rendimiento (peso de la planta, número de cápsulas, peso de cápsulas/planta y el peso de semillas/planta), siendo 60 Gy la mejor dosis. Con respecto al porcentaje total de aceite producido en los cultivos, se han observado pequeños cambios, pero no se alcanzó el nivel de significación. La cantidad de ácido graso insaturado (18: 1, omega 9) fue 10,5% que aumentó con dosis de 30 Gy seguido de 60 Gy (1,1%). El contenido total de aminoácidos mostró que dosis de 30 Gy registró el valor más alto (350,4 mg·g ). Los valores de fósforo, magnesio, potasio y hierro, que son los principales minerales en las semillas de sésamo incrementaron en las muestras irradiadas.

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Effect of gamma irradiation on germination, growth, and biochemical parameters of Terminalia arjuna Roxb

Cited by 58 publications

References 3 publications

Mutagenic effects of gamma rays on soybean (Glycine max L.) germination and seedlings

Mutagenic effects of gamma rays on soybean (Glycine max L.) germination and seedlings

Response of Datura innoxia Linn. to Gamma Rays and Its Impact on Plant Growth and Productivity

Influence of pre-sowing treatments by gamma rays on growth, yield and some chemical constituents of <em>Sesamum indicum</em> L.

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