Induced Mutations in Maize

Bird, Robert M.; Neuffer, M. G.

doi:10.1002/9781118061022.ch5

Cited by 14 publications

(5 citation statements)

References 91 publications

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“…The increased mean germination percent due to various colchicines concentrations revealed the effects of the mutagen in the germination process. The number of germinating seeds decreases with the increase in the concentration of colchicines, which is in agreement with the findings of Ulmalkar et al (1998) who reported high germination percentages in Capsicum annum due to Sodium Azide treatment but is in contrast to the work of Bird and Neuffer (1988) who reported reduction in the germinating rates in plants treated with mutagen. The mean increase in plants heights at maturity of the two sesame varieties induced by colchicines was due to the alteration of their genome integrated by environmental signals as reported by Uno et al (2001); probably by increasing the rates of cellular division and expansion at their meristematic regions.…”

Section: Discussionsupporting

confidence: 91%

Effect of Colchicine Induced Mutagenesis on Growth and Yield of Sesame (Sesamum indicum L.)

Salisu¹,

Adamu²,

Dangora³

2011

Bayero J. Pure App. Sci.

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Chemical mutagenesis through the use of colchicine on the seeds of two varieties of sesame (Sesamum indicum L. Var. Ex-Sudan and E-8) with the aim of inducing variability that could be exploited in the genetic improvement of its growth and yield was carried out. The sesame seeds were treated with colchicines at four different concentrations (0.1mM, 0.5mM, 1.0mM, 2.0mM and control) for two mutant generations (M 1 and M 2). Highly significant variation (P≤0.01) was observed in such quantitative traits like the germination percents, height at maturity, number of leaves produced per plant, internodes length, leaf area, number of pods/plant, number of seeds/pod and 1000 seeds weight which decreased with increase in colchicines concentrations. Besides these, a segment of chlorophyll deficient mutants such as: Chlorina, Xantha, Striata, Virescents and Lustescents were found among the mutant generations, with their frequency decreasing with increase in colchicines concentrations. Lower concentrations of colchicines were recommended for inducing genetic variability in sesame (Sesamum indicum L.) to improve the yield of such economic plant.

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Section: Discussionsupporting

confidence: 91%

Effect of Colchicine Induced Mutagenesis on Growth and Yield of Sesame (Sesamum indicum L.)

Salisu¹,

Adamu²,

Dangora³

2011

Bayero J. Pure App. Sci.

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“…This finding is in contrast to the work of Bird and Neuffer (1988) who reported reduction in the germinating rates in plants treated with mutagens. However, increased survival rates and plants heights at both seedlings and matured stage among the colchicine induced mutants of fonio with decrease in concentrations revealed the ability of the mutagen to induce cellular growth especially at the meristematic tissues.…”

Section: Discussioncontrasting

confidence: 99%

Colchicine-induced mutagenesis for improved growth and yield of fonio (Digitaria exilis [Kippist] Stapf.)

Salisu¹,

Adamu²,

Adelanwa³

et al. 2018

Bayero J. Pure App. Sci.

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The effect of colchicine on some growth and yield parameters of fonio (Digitaria exilis) was studied. Seeds of five accessions of fonio (Dinat, Jakah, Jiw 1, Jiw 2 and Nkpowas) were treated with five different colchicine concentrations (0.1mM, 0.5 mM, 1.0 mM, 2.0 mM and soaking with the aim of inducing variability that could be exploited in the improvement of the crop. The treated seeds were sown in a plot in a Completely Randomized Design with three replications in a factorial arrangement. The result obtained revealed highly significant difference (P effects of different concentrations of colchicine on the growth and yield components of fonio. The result showed that colchicine produced taller mutants (79 that are larger in cross sectional area (11.35 number with high number of spikes that are longer and bear high number of seeds/spikes. Similarly the 1000 mutants' seeds weight is higher than concentration dependent, decrease with increase in concentrations. Lower colchicine concentration (0.1 mM) and accession Jiw 1 having highest responses to colchicines treatment was recommended for breeding programs in fonio.

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“…Induced mutagenesis Manipulation of genetic diversity in maize can be achieved through various approaches such as hybridization with sexually compatible wild relatives (Mangelsdorf 1961), treatment with physical and chemical mutagens (Bird and Neuffer 1987), transposable elements (May et al 2003;Neuffer et al 2009), transgenesis (Wang et al 2003a, b) and genome editing (Gao 2018) (Table 2). All these approaches can cause gene mutations and rearrangements.…”

Section: Manipulation Of Genetic Diversity: Mutagenesis Transformatio...mentioning

confidence: 99%

“…Induction of mutations in maize with chemical mutagens, for example, EMS and various N-nitroso compounds has also been carried out for a while (Amano and Smith 1965;Bird and Neuffer 1987;Williams 2016). EMS is more effective than non-ionizing and ionizing radiation (Neuffer and Fiscor 1963;Neuffer et al 2009).…”

Section: Manipulation Of Genetic Diversity: Mutagenesis Transformatio...mentioning

confidence: 99%

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Technological advances in maize breeding: past, present and future

Andorf¹,

et al. 2019

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Maize has for many decades been both one of the most important crops worldwide and one of the primary genetic model organisms. More recently, maize breeding has been impacted by rapid technological advances in sequencing and genotyping technology, transformation including genome editing, doubled haploid technology, parallelled by progress in data sciences and the development of novel breeding approaches utilizing genomic information. Herein, we report on past, current and future developments relevant for maize breeding with regard to (1) genome analysis, (2) germplasm diversity characterization and utilization, (3) manipulation of genetic diversity by transformation and genome editing, (4) inbred line development and hybrid seed production, (5) understanding and prediction of hybrid performance, (6) breeding methodology and (7) synthesis of opportunities and challenges for future maize breeding.

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Induced Mutations in Maize

Cited by 14 publications

References 91 publications

Effect of Colchicine Induced Mutagenesis on Growth and Yield of Sesame (<i>Sesamum indicum</i> L.)

Effect of Colchicine Induced Mutagenesis on Growth and Yield of Sesame (<i>Sesamum indicum</i> L.)

Colchicine-induced mutagenesis for improved growth and yield of fonio (<i>Digitaria exilis</i> [Kippist] Stapf.)

Technological advances in maize breeding: past, present and future

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