Modulation of some quantitative and qualitative characteristics in rice (Oryza sativa L.) and mung (Phaseolus mungo L.) by ionizing radiation

Maity, Jyoti Prakash; Mishra, D.; Chakraborty, Anindita; Saha, Archana Joshi; Santra, S. C.; Chanda, Sontosh Chandra

doi:10.1016/j.radphyschem.2004.08.005

Cited by 61 publications

(35 citation statements)

References 13 publications

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“…Among the dwarf mutants, 165-110-1, generated from 110 Gy is particularly interesting since it produced threefold more inflorescences with 13% increase in raceme number per inflorescences. Enhanced panicle length and number in rice (Oryza sativa L.) (Maity et al, 2005), and nearly eightfold more inflorescences in St. Augustinegrass were reported (Li et al, 2010) among the mutants. Wu et al (2006) reported that inflorescence prolificacy had 51% positive correlation on seed yield, indicating that selection for increased inflorescence prolificacy would be one of the best indirect selection traits for improvement of seed yield in bermudagrass.…”

Section: Discussionmentioning

confidence: 99%

Gamma-ray Irradiation Induces Useful Morphological Variation in Bermudagrass

Mutlu

Djapo

Özmen

et al. 2015

Not Bot Hort Agrobot Cluj

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Bermudagrass, Cynodon dactylon (L.) Pers. is a widely used warm-season turfgrass species in warmer regions of the world. Gamma (ɣ) irradiation has been used to generate useful variations in turfgrass breeding for various morphological traits. The objective of the present study was to measure and determine variations in morphology and turfgrass characteristics of a native drought resistant bermudagrass germplasm irradiated with 70, 90 or 110 Gy using a 60 Co source. The stolons containing a single node were irradiated and immediately planted for regeneration in a greenhouse at the Akdeniz University, Antalya, Turkey. Selected mutants regenerated from the irradiated stolons were clonally propagated and transplanted into plastic pots for further observations of turfgrass characteristics. Survival rates of stolons exposed to 70, 90 and 110 Gy were 76%, 43% and 17% respectively, 6 weeks after treatment. Dosages of 85 and 57 Gy were determined as LD50 and LD20 for the cuttings, respectively. The linear reduction of survival rate with increasing gamma-rays was highly correlated (r 2 =0.99). A total of four mutant lines (0.3 % of the irradiated plants) showed a distinct dwarfed growth habit. Three of these lines were originated from 70 Gy and one from 110 Gy. These mutant lines exhibited more dwarf growth habit, higher shoot density, finer leaf texture than parental genotype. Mutant lines developed in this study can be used for the development of improved bermudagrass cultivars for landscaping and sports turf.

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Section: Discussionmentioning

confidence: 99%

Gamma-ray Irradiation Induces Useful Morphological Variation in Bermudagrass

Mutlu

Djapo

Özmen

et al. 2015

Not Bot Hort Agrobot Cluj

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“…g-irradiation of seed has been found to exert pronounced effects on plant growth. The exposure to g-irradiations can have stimulatory effects on specific morphological parameters and can increase the yield of plants in terms of growth (e.g., taller plants), reproductive success (e.g., formed seeds) and ability to withstand water shortage (Dishlers and Rashals 1977;Zaka et al 2002;Maity et al 2005;Yu et al 2007;Melki and Dahmani 2009). A more detailed description of morphological abnormalities were documented by Gunckel (1957) and Sparrow (1966).…”

Section: Plant Growth and Developmentmentioning

confidence: 99%

Effect of gamma radiation on morphological, biochemical, and physiological aspects of plants and plant products

2012

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Research on the basic interaction of radiation with biological systems has contributed to human society through various applications in medicine, agriculture, pharmaceuticals and in other technological developments. In the agricultural sciences and food technology sectors, recent research has elucidated the new potential application of radiation for microbial decontamination due to the inhibitory effect of radiation on microbial infestation. The last few decades have witnessed a large number of pertinent works regarding the utilization of radiation with special interest in γ-rays for evolution of superior varieties of agricultural crops of economic importance. In this review, general information will be presented about radiation, such as plant specificity, dose response, beneficial effects, and lethality. A comparison of different studies has clarified how the effects observed after exposure were deeply influenced by several factors, some related to plant characteristics (e.g., species, cultivar, stage of development, tissue architecture, and genome organization) and some related to radiation features (e.g., quality, dose, duration of exposure). There are many beneficial uses of radiation that offer few risks when properly employed. In this review, we report the main results from studies on the effect of γ-irradiations on plants, focusing on metabolic alterations, modifications of growth and development, and changes in biochemical pathways especially physiological behaviour.

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“…The effect of ionising radiation on plants has been extensively investigated in the past, with different goals: (i) to select cultivars with improved yields in breeding programmes (Maity et al 2005;Yu 2005); (ii) to assess the consequence of radioactive contamination of the environment in radioecology studies (Aleksakhin et al 2006);and (iii) to understand the effect of space factors on plant growth (De Micco et al 2011a). In this last context, plants have an important role in Bioregenerative Life Support Systems (BLSS) to sustain human life in space during long-duration exploratory-class manned missions, not only as producers of fresh food, but also in regeneration of resources in the spacecraft.…”

Section: Introductionmentioning

confidence: 99%

Growth alteration and leaf biochemical responses in Phaseolus vulgaris exposed to different doses of ionising radiation

2013

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Ionising radiation may have different effects on plant metabolism, growth and reproduction, depending on radiation dose, plant species, developmental stage and physiological traits. In this study, exposure of dwarf bean plants to different doses of X-rays (0.3, 10, 50, 100 Gy) was investigated with a multidisciplinary approach consisting of morphological, ecophysiological and biochemical analysis. Both mature and young leaves still growing during the X-rays exposure were compared with non-irradiated control leaves. In particular, leaf expansion, leaf anatomy and functional traits, as well as photosynthetic pigment content and Rubisco expression were analysed. Moreover, the activity of poly(ADP-ribose) polymerase (PARP) was also measured as an indicator of radiation-induced DNA damage. Our data showed that leaf growth is affected by high levels of radiation and demonstrate that mature leaves are more radio-resistant than young leaves, which experience severe dose-dependent changes in leaf functional traits. In particular, young leaves exhibited a reduction of area and an increase in specific mass and dry matter content, as well as a decline in Rubisco activity. Moreover, they showed elevated PARP activity and an increase in phenolic compounds in wall cells if compared with mature leaves. Both of these strategies have been interpreted as a way to help developing leaves withstand irradiation.

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Modulation of some quantitative and qualitative characteristics in rice (Oryza sativa L.) and mung (Phaseolus mungo L.) by ionizing radiation

Cited by 61 publications

References 13 publications

Gamma-ray Irradiation Induces Useful Morphological Variation in Bermudagrass

Gamma-ray Irradiation Induces Useful Morphological Variation in Bermudagrass

Effect of gamma radiation on morphological, biochemical, and physiological aspects of plants and plant products

Growth alteration and leaf biochemical responses in Phaseolus vulgaris exposed to different doses of ionising radiation

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