Gamma Radiation Effects Seed Germination, Plant Growth and Yield Attributing Characters of Fennel (Foeniculum vulgare Mill.)

Verma, Arvind; Sharma, Sitaram; Kakani, R. K.; Meena, R. D.; Choudhary, Sharda

doi:10.20546/ijcmas.2017.605.274

Cited by 23 publications

(19 citation statements)

References 17 publications

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“…Gamma radiation impacts the germination potential and also the quality of germinated seedling. These results were similar with the others researches who reported that increasing dose irradiation decreased the seed germination and seedling growth (Verma et al, 2017;Tshilenge-Lukanda et al, 2013). The reduction of seed germination and plants survival had been explained by the inhibition of physiological and biological process for seed germination and plant survival.…”

Section: Effect Of γ-Radiation On Cowpea Germination and Seedling Sursupporting

confidence: 92%

Assessment of radio-sensitivity for three cowpea genotypes to gamma irradiation

Gnankambary¹,

Batieno²,

Sawadogo³

et al. 2019

Int. J. Genet. Mol. Biol.

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Cowpea (Vigna unguiculata [L.] Walp) is an important food legume. However, production is limited by various biotic and abiotic constraints in sub-Saharan Africa and reduced genetic variability hinders crop improvement efforts. Gamma ray irradiation has been used as a mutagen to create variability but optimal dose determination is a prerequisite to maximize the recovery of mutant plants. In this study, three genotypes (KVx396-4-5-2D, Tiligré and Moussa local) from Burkina Faso were treated with four gamma irradiation doses (150, 200, 250 and 300 Gy) using a labelled cobalt source (60CO) and evaluated for seed germination and seedling survival. Results showed that germination and survival rates were severely decreased at treatments greater than 150 Gy and no germination was observed at the 300 Gy dose. The optimum dose (LD 50%) varied for the genotypes and ranged from 129 to 163 GY. Seed characteristic and quality were factors contributing to this variation.

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Section: Effect Of γ-Radiation On Cowpea Germination and Seedling Sursupporting

confidence: 92%

Assessment of radio-sensitivity for three cowpea genotypes to gamma irradiation

Gnankambary¹,

Batieno²,

Sawadogo³

et al. 2019

Int. J. Genet. Mol. Biol.

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“…Gamma rays significantly affected the number of days required for flowering. The results revealed that the maturity of fennel crop delayed by application of gamma rays (Verma et al, 2017). Similar results were also observed in ashwagandha (Bharathi et al, 2013).…”

Section: Morphological Analysissupporting

confidence: 82%

“…Diminutive efforts have been made to improve fennel crop through genetic manipulation. Since, induced mutagenesis can be a better way to improvement of the variability in most of spice crops including fennel also (Verma et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Mutagenic potential of Gamma rays on Somatic cell division and morphological parameters in Foeniculum vulgare Mill.

Mishra

Kumar

2021

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Mutagenesis involving ionizing radiation has been widely used for alteration in genetic constituents to increase the variability at gene level in a very small fraction of time. But, attempts to induce genetic variability in fennel for agronomically important trait are very limited. Narrow genetic base is the main hindrance in handling the conventional breeding in Fennel . Thus, main idea of this study is to generate genetic variability in Ajmer fennel-2 variety of Foeniculum vulgare Mill. by using the most potent physical mutagen i.e. gamma rays. The seeds were exposed to different doses of gamma rays viz. 5, 10, 15, 20 and 25Kr, respectively, along with control to analyze the effect of gamma rays on meristematic root tips. Germination and survival percentage were significantly affected in response to ionizing potential of gamma rays and a dose dependent decline was observed in both the parameters. Plant height, shoots, root length and days of flowering were also affected by gamma rays and a considerable increment was achieved at lowest dose with respect to control. As the dose of gamma ray increases, the rate of Active Mitotic Index declines. The irradiated seeds show numerous chromosomal variations such as; scattering, stickiness, bridge formation etc which are computed in the form of Total Abnormality Percentage.

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“…Results revealed that seed germination, seedling height and survival rate decreased substantially with increased gamma radiation doses. These results were similar to those of other workers who reported that increasing the irradiation dose decreased the seed germination and seedling growth (Tshilenge-Lukanda et al 2013;Verma et al 2017;Karidiatou et al 2019). However, according to Kodym et al (2012), sensitivity to a mutagen depends on the type of material and varies from one species to another.…”

Section: Discussionsupporting

confidence: 91%

Radiosensitivity of two varieties of watermelon (Citrullus lanatus) to different doses of gamma irradiation

et al. 2020

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Watermelon (Citrullus lanatus) is one of the most popular fruits in Cameroon and the world at large. However, the extreme sensitivity of watermelon to parasites and climatic vagaries makes its cultivation demanding of chemical inputs that can have negative impacts on human health and the environment. In Cameroon, there is a slow improvement of fruit yield in watermelon breeding due to the lack of natural heritable genetic variation, which is a prerequisite for genetic improvement of crops. Such variation can be created through either random or targeted processes on genotypes with appropriate doses of radiation. Genetic improvement by induced mutagenesis appears today alongside hybridization as an alternative method of creating new plant varieties. However, the success of this approach is determined by the application of an appropriate and ideal dose of mutagen. The objective of this study was to evaluate the radiosensitivity of the two most cultivated watermelon varieties in Cameroon to gamma radiation from 60 Co in order to determine an optimal dose or lethal dose 50 (LD50) for the induction of the genetic variability necessary for genetic improvement. Seeds of the Kaolack and Crimson sweet watermelon varieties were irradiated with five doses of gamma radiation (100, 200, 300, 400 and 600 Gy) in the laboratory of the International Atomic Energy Agency in Seibersdorf, Austria. These seeds were cultivated in a greenhouse following an utterly randomized device with three repetitions, and parameters such as the germination rate, the survival rate and the shoot length of plants were evaluated. High rates of 90% and 75% germination were obtained, respectively, for the control treatments of Kaolack and Crimson sweet, while the lowest rates were 35% at 600 Gy for Kaolack and 30% at 400 Gy for Crimson sweet. The highest survival rate of plants (96.66%) was obtained with the control seeds of the Kaolack. This variety had the lowest survival rate (45.6%) at 600 Gy dose. Statistical analysis of data obtained helped to estimate the ideal LD50 doses based on growth reduction of seedlings' heights after gamma-ray treatment. Using a linear regression model based on parameters like plant size, the LD50 doses for Kaolack and Crimson sweet were calculated at 225.40 Gy and 221.56 Gy, respectively, and predicted between 200 and 250 Gy. These results show that the two varieties evaluated were radiosensitive as clearly expressed in the parameters evaluated, where the values decreased with the increase in the irradiation dose. The LD50 doses from this study could be safely applied as reference doses for large-scale gamma irradiation of watermelon genotypes to create desirable agronomic traits in the mutation breeding efforts.

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Gamma Radiation Effects Seed Germination, Plant Growth and Yield Attributing Characters of Fennel (Foeniculum vulgare Mill.)

Cited by 23 publications

References 17 publications

Assessment of radio-sensitivity for three cowpea genotypes to gamma irradiation

Assessment of radio-sensitivity for three cowpea genotypes to gamma irradiation

Mutagenic potential of Gamma rays on Somatic cell division and morphological parameters in Foeniculum vulgare Mill.

Radiosensitivity of two varieties of watermelon (Citrullus lanatus) to different doses of gamma irradiation

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