Phenotypic diversity in mutagenized population of urdbean (Vigna mungo (L.) Hepper)

Goyal, Sonu; Wani, Mohammad Rafiq; Raina, Aamir; Laskar, Rafiul Amin; Khan, Samiullah

doi:10.1016/j.heliyon.2021.e06356

Cited by 30 publications

(11 citation statements)

References 18 publications

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“…Among the breeding strategies, mutation breeding is a coherent tool to increase genetic variability and has been successful in the development of thousands of new varieties in hundreds of crop species (6). Different mutagens have been used by the workers from time to time to accomplish the desired results, however, radiation-induced mutagenesis is mostly used for the improvement of different agro-economic traits (7)(8)(9)(10). Among the radiations, gamma rays are widely preferred physical mutagens that affect plant growth and development by altering the biochemical, physiological and morphological traits (11)(12)(13).…”

Section: Introductionmentioning

confidence: 99%

Effects of gamma radiations on morphological and physiological traits of finger millet (Eleusine coracana (L.) Gaertn.)

et al. 2021

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The present study was carried out to analyse the effect of gamma radiation on morpho-physiological parameters of seven days old M1 seedlings of Eleusine coracana (L.) Gaertn. (finger millet). The finger millet seeds were irradiated with different doses of viz., 100 Gy, 200 Gy, 300 Gy, 400 Gy, 500 Gy, 600 Gy, 700 Gy, 800 Gy, 900 Gy and 1000 Gy of gamma ray. Higher doses of gamma rays induced substantial reduction in mean performance of morphological and physiological traits. However, lower doses showed stimulatory effects on morphological and physiological traits. The results revealed a progressive decrease in chlorophyll fluorescence with increasing dose of gamma irradiation. Among all the mutagen doses used, 600 Gy gamma irradiated seeds showed enhanced mean performance of morphological and physiological traits in finger millet. Hence 600 Gy gamma rays may be employed in other crop species to improve the agro-economic traits

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Section: Introductionmentioning

confidence: 99%

Effects of gamma radiations on morphological and physiological traits of finger millet (Eleusine coracana (L.) Gaertn.)

et al. 2021

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“…The present study on finger millet revealed high heritability and genetic advance in all of the above-mentioned quantitative traits at 600 Gy of gamma rays in M2 generation. Several researchers also reported increase in genotypic coefficient of variation, genetic advance and heritability for quantitative traits in crops such as lentil (68), urdbean (69,70), Sorghum (71) and faba bean (72 -74). The present research demonstrates a wide range of variability for a variety of factors, as well as substantial genetic advancement and heritability for crucial yield qualities, which will be useful for effective selection.…”

Section: Effect Of Gamma Irradiation On Genetic Variabilitymentioning

confidence: 98%

Gamma ray induced positive alterations in morphogenetic and yield attributing traits of finger millet (Eleusine coracana (L.) Gaertn.) in M2 generation

Latha

Dhanarajan²,

Raina³

et al. 2022

Plant Sci. Today

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Induced mutagenesis by gamma rays plays a potent promising technology to be applied for crop improvement through breeding methods, especially in tiny florets possessing self- pollinated plants such as cereals. Finger millet (Eleusine coracana (L.) Gaertn.) which always ensured for valuable nutrients, as well as famine tolerant crop to supply food for global population throughout the year. The present study was performed to assess the spectrum and frequency of macro mutants induced by gamma radiations in M2 generation finger millet. The chlorophyll mutants viz., albina, xantha, chlorina and viridis and morphological mutants such as tall, dwarf, bushy, brittle stalk and broad leaf were recorded in different doses. Among the mutagen doses 600 Gy dose induced maximum increase in mean values and phenotypic and genotypic coefficients of variation for the plant height (cm), number of leaves per plant, leaf length (cm), number of tillers per plant, number of panicles per plant, panicle length, days to 50% flowering, and 1000 seeds weight. Except for panicle number/plant and 1000 seed weight, all traits showed high heritability in all doses. The results revealed a progressive decrease in mean values of quantitative traits with the increase in doses. The present study provides an idea about the optimum dose of gamma rays from a pool of doses that could be employed in future breeding programmes.

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“…The morphological mutants depicted in Table 6 and Table 7 were non-segregating in the subsequent generations. Several researchers have also reported non-segregating morphological mutants in advanced generations [ 78 , 79 , 80 , 81 , 82 , 83 , 84 , 85 , 86 , 87 ].…”

Section: Discussionmentioning

confidence: 99%

Comparative Mutagenic Effectiveness and Efficiency of Gamma Rays and Sodium Azide in Inducing Chlorophyll and Morphological Mutants of Cowpea

Raina

Laskar²,

Wani

et al. 2022

Plants

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Mutagenic effectiveness and efficiency are the most important factors determining the success of mutation breeding, a coherent tool for quickly enhancing genetic diversity in crops. However, conclusive evidence of using an effective and efficient dose of gamma (γ) rays and sodium azide (SA) for genetic improvement is scant. The present study assesses genetic diversity in M2 mutants of cowpea and evaluates mutagenic effectiveness and efficiency of the single and combination doses of γ rays and SA. In M0 generation, 7200 M1 seeds obtained by SA treatment (0.01—0.1%) and γ irradiation (100—1000 Gy) at a dose rate of 11.58 Gy/min were sown to raise M1 generation. A total of 57,620 M2 seeds were generated from the M1 generation of two varieties—Gomati VU-89 and Pusa-578, from which 47,650 seeds germinated. Moreover, plants (38,749) that survived were screened for chlorophyll and morphological mutations. Among the mutagens, SA followed by γ rays + SA and γ rays was most effective in inducing higher frequency and a broader spectrum of chlorophyll mutants. A wide range of morphological mutants affecting every growth stage was recorded with the highest frequency in 400 Gy γ rays + 0.04% SA treatment. These morphological mutants with desirable agronomic traits represent a valuable genetic resource for future breeding programs. This study revealed the potency of γ rays and SA in increasing genetic diversity and demonstrated the successful conduct of induced mutagenesis in the cowpea.

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Phenotypic diversity in mutagenized population of urdbean (Vigna mungo (L.) Hepper)

Cited by 30 publications

References 18 publications

Effects of gamma radiations on morphological and physiological traits of finger millet (Eleusine coracana (L.) Gaertn.)

Effects of gamma radiations on morphological and physiological traits of finger millet (Eleusine coracana (L.) Gaertn.)

Gamma ray induced positive alterations in morphogenetic and yield attributing traits of finger millet (Eleusine coracana (L.) Gaertn.) in M2 generation

Comparative Mutagenic Effectiveness and Efficiency of Gamma Rays and Sodium Azide in Inducing Chlorophyll and Morphological Mutants of Cowpea

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