Development of a Mutant Population of Micro-Tom Tomato Using Gamma-Irradiation

Chun, Jae-In; Kim, Heejin; Jo, Yeong Deuk; Kim, Jin-Baek; Kang, Jin‐Ho

doi:10.9787/pbb.2020.8.4.307

Cited by 8 publications

(6 citation statements)

References 40 publications

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“…Moreover, Kiong et al (2008) reported that the degree of chromosomal aberrations which are caused by irradiation dose determined the rate of germination and the survival rate. Furthermore, we found many phenotypic changes consistent with the findings of several researchers (Matsukura et al, 2007 andChun et al, 2020).…”

Section: Results and Discussion Screening For Salinity Tolerancesupporting

confidence: 93%

“…Furthermore, the mean value of yield component and fruit physical traits in the induced mutant differed from the untreated (control) cultivars. Similar findings were noted by Chun et al (2020). Thus, genetic variability that is induced by mutations can be used to develop new promising tomato lines having desirable and novel attributes.…”

Section: Evaluation Of M2 Mutants Under Salinity Stress Conditionssupporting

confidence: 71%

“…However, superiority in growth is due to stimulation with a low level of radiation that causes an increasing in hormonal signaling rate in plant cells (Wi et al, 2007). As our results, Chun et al (2020) found an increase in growth because of a low dose of mutagenic agent. In contrast, a high dose of radiation limits growth because it causes biological damage to the cell cycle and the entire genome.…”

Section: Evaluation Of M2 Mutants Under Salinity Stress Conditionssupporting

confidence: 70%

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Development of Some Salinity Tolerant Tomato Mutants Using Gamma-Irradiation

Abouzaid

Bashandy

Ahmed

2022

New Valley Journal of Agricultural Science

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Salinity stress is one abiotic stress that severely affects the crop yield. Tomato is one of the most important vegetable plants in the world which is also more sensitive to salinity stress. Therefore, this study's aim to create more salinity-tolerant tomato plants having desirable traits. Seeds of two commercial tomato cultivars (Super Strain B and Castle Rock) have been exposed to different doses of gamma rays (100, 200, 300 and 400 Gy), and the mutants were evaluated under salinity stress conditions during two successive generations (M0 and M1) in the field and one generation (M2) in greenhouse. Various abnormal phenotypic changes were observed in the M0 generation. Moreover, at both the M1 and M2 generations, all the evaluated traits significantly differed among the studied genotypes. Furthermore, some induced mutants, especially the C-10 mutant, had superiority over the origin cultivars in fruit yield production under saline conditions. Thus, these mutants could be used in breeding programs to generate more salinitytolerant lines.

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Section: Results and Discussion Screening For Salinity Tolerancesupporting

confidence: 93%

Section: Evaluation Of M2 Mutants Under Salinity Stress Conditionssupporting

confidence: 71%

Section: Evaluation Of M2 Mutants Under Salinity Stress Conditionssupporting

confidence: 70%

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Development of Some Salinity Tolerant Tomato Mutants Using Gamma-Irradiation

Abouzaid

Bashandy

Ahmed

2022

New Valley Journal of Agricultural Science

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“…For 'Micro-Tom', Matsukura et al [80] established a mutant population following subjection to acute gamma irradiation at a dose of 300 Gy, which reduced the germination rate by 30%. In our previous study conducted on acutely gammairradiated 'Micro-Tom', the survival rate significantly decrease from 300 Gy [46]. Thus, a dose of 300 Gy was considered as the shoulder dose that could help generate the highest number of mutants per sown M 1 seed [16].…”

Section: Discussionmentioning

confidence: 99%

“…In general, seeds are subjected to irradiation with acute gamma rays to facilitate the establishment of a mutant population [45,46]. To examine the feasibility of using chronically gamma-irradiated tomato plants in the establishment of a mutant population, 184 M 2 seeds (40 seeds from 0 Gy-50 Gy-, 100 Gy-, and 150 Gy-irradiated M 1 lines, and 24 seeds from 200 Gy-irradiated M 1 lines) were sown.…”

Section: Mutant Generation From Chronically Gamma-irradiated M 1 Plantsmentioning

confidence: 99%

Chronic Gamma Irradiation Changes Phenotype and Gene Expression Partially Transmitted to Next-Generation Tomato Seedlings

Kim

Chun

et al. 2021

Agronomy

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Compared to the studies on acute irradiation of seeds, fewer studies have reported on the chronic irradiation of seedlings, especially in fruit-bearing vegetables. We examined the effects of chronic gamma irradiation on tomato (Solanum lycopersicum ‘Micro-Tom’) seedlings exposed to gamma rays (50, 100, 150, and 200 Gy) for 4 weeks. As the total dose of gamma rays increased, leaf length, trichome density, and seed number were reduced in the irradiated seedlings (M1). Additionally, a change in fruit shape was observed. Chronic gamma irradiation reduced the expression of two trichome-related genes and affected the expression levels of 11 reactive oxygen species (ROS)-related genes. We examined the transmittance of these effects using M2 plants. The trichome density and fruit shape were similar between M2 and control plants; however, a reduction in leaf length and seed number was detected in M2 plants. Interestingly, changes in the expression of four ROS-related genes (ZAT10, Mn-SOD, POD3, and RBOH1) found in M1 were detected in M2 plants. Thus, the changes in phenotype and gene expression induced by chronic gamma irradiation were transmitted to the next generation. Additionally, we found novel mutants from M2 plants, suggesting that chronic gamma irradiation may be considered in tomato mutation breeding.

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