Broad‐few‐leaflets and outwardly curved wings: two new mutants of chickpea

Gaur, Pooran M.; Gour, V. K.

doi:10.1046/j.1439-0523.2003.00807.x

Cited by 24 publications

(12 citation statements)

References 8 publications

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“…Enhancement of both frequency and spectrum of induce morphological mutations towards desired plant characteristics in a sustainable manner is key in mutation breeding experiment for crop improvement. Although identified morphological mutants cannot always be a predicted one and may contain undesirable attributes due to random mutational process, therefore, some mutants, nevertheless, could be used as a source of valuable genes in cross breeding programmes for quantitative traits improvement [16], may be constructive in mapping studies [21] and in evolutionary studies on the crops [15]. The pleiotropic effects of mutated genes or chromosomal aberrations or gene mutations might be responsible for such mutants [22].…”

Section: Discussionmentioning

confidence: 99%

Induce Physical and Chemical Mutagenesis for Improvement of Yield Attributing Traits and their Correlation Analysis in Chickpea

Raina

Laskar

Khursheed

et al. 2017

ILNS

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In the current scenario of sky high population and widespread food insecurity, there is an urgent need for productivity improvement of major crops like pulses, one of the most climate friendly and accessible foods for the large poor population of the world. Chickpea is an important pulse crop, having high percentage of nutritional content and is widely used as food across the world. Induced mutagenesis has proved over time as a coherent tool for modern plant breeders to improve the productivity for combating the food insecurity and malnutrition across the globe. Dry and healthy seeds of Cicer arietinum L. var. C-235 were treated with individual and combination doses of gamma rays, sodium azide and hydrazine hydrate to raise the M1 generation. M2 seeds harvested from M1 plants were sown in the nest season.Bio-physiological study in M1 generation showed growth inhibition in the order viz. combination treatment>hydrazine hydrate>gamma rays>sodium azide. In M2 generation, comparative observations were recorded for morphological variation and quantitative traits to assess the genetic response of the chickpea variety C-235 toward the different concentrations of mutagens. Observations on isolated mutants in M2 generation revealed that 0.3% HZ + 0.02% SA was most mutagenic while 200 Gy, 0.03% SA and 0.2% HZ were highest in their individual treatment groups. In context to the frequency of morphological mutants studied in M2 generation, dwarf mutants were found to be highest followed by tall and branching pattern mutants. Highly significant correlation coefficient between yield and other traits showed that the selection for high yielding mutants can be done on the basis of these traits undoubtedly.

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Section: Discussionmentioning

confidence: 99%

Induce Physical and Chemical Mutagenesis for Improvement of Yield Attributing Traits and their Correlation Analysis in Chickpea

Raina

Laskar

Khursheed

et al. 2017

ILNS

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“…The phenotyping of the isolated mutants led to the classification of these mutants into different categories like plant size, growth habit, leaf, flower, pod and seed. Although economic value of most of the mutants in different morphological categories cannot be established but some mutants can be used as a source of many beneficial genes in cross breeding programmes or for the improvement of some quantitative traits [27], may be useful in mapping studies [28] and in determining the evolution of the crops [29]. The pleiotropic effects of mutated genes or chromosomal aberrations or gene mutations were considered as the root cause for the development of such morphological mutants [26,30].…”

Section: Morphological Mutation and Plant Phenotypingmentioning

confidence: 99%

Mutagenic Effectiveness and Efficiency of Gamma Rays and HZ with Phenotyping of Induced Mutations in Lentil Cultivars

Laskar

Khan

2017

ILNS

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Abstract. In mutation breeding, mutagenic effectiveness and efficiency are the base parameters to predict the mutagenic potency of any mutagen. Studies on mutagenic effectiveness and mutagenic efficiency of physical mutagen (gamma rays) and chemical mutagen (hydrazine hydrates; HZ) on two cultivars of lentil (Lens culinaris Medik.), viz. DPL 62 (macrosperma) and Pant L 406 (microsperma) have been reported. Dry and healthy seeds were treated with four doses of each gamma rays (100-400 Gy), HZ (0.1-0.4 %) and their combinations. Frequencies of the induced agro-morphological variations into different phenotypic categories were estimated in M 2 population that resulted into identification and isolation of wide range of mutants with altered phenotypes. Data on effectiveness and efficiency of various mutagenic treatments calculated on the basis of the frequency of chlorophyll mutations, which showed effectiveness and efficiency were higher at the moderate doses of gamma rays and HZ, while in case of combination treatments; lower doses were most effective and efficient with few inter-varietal exceptions. Phenotyping of the mutants revealed that growth habits was the most sensitive category to which most of the mutant belongs, followed by leaf and flower/pod/seed in both the cultivars studied. Overall, the screened and isolated mutants with economically important agronomic traits can be further propagated in the subsequent generation for development of elite lentil mutant cultivars.

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“…1). These mutants can be a source of many beneficial genes in cross breeding programmes or for some quantitative traits improvement , may be valuable for mapping studies (Gaur and Gour, 2003) and in evolutionary studies of the crops (Toker, 2009). Induced morphological variants considered to be either a result of pleiotropic effects of mutated genes or chromosomal aberrations or gene mutations (Gottschalk, 1987;Wani et al, 2011).…”

Section: Effect On Plant Morphologymentioning

confidence: 99%

Quantitative Analysis of Induced Phenotypic Diversity in Chickpea Using Physical and Chemical Mutagenesis

Laskar¹,

Khan²,

Khursheed³

et al. 2015

J. of Agronomy

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A B S T R A C TIn the present scenario of variable natural environment and sky-high population, sustainable boost in the agricultural productivity is the utmost priority. Induce mutagenesis generates noble genetic combination without affecting the overall genomic makeup of crop, thus, providing essential genetic variation for any crop improvement programme. The present study has been carried out to investigate the comparative mutagenicity of gamma rays and HZ on chickpea (Cicer arietinum L.) genotype (avrodhi) at M 2 generation developed from seeds of treated M 1 plants population. The assessment on phenotypic expression for the studied qualitative and quantitative traits showed considerable deviations in all the treatments and significant positive shift in 0.01 and 0.02% doses compared to control while 0.04% proved to be most mutagenic with highest significant negative deviation. A broad spectrum and frequency of macro mutations were induced affecting all plant parts and different morphological variants were screened and isolated on the basis of economic importance from the treated populations. Economically important mutations like branching pattern, stem structure, plant height, dwarf and bushy growth habit, foliage type, flowering behavior and maturity were identified and the frequency of the variants were found to be more in 0.03% doses. Explicitly, HZ doses provided greater deviations in both directions in the quantitative phenotypic characters studied while frequencies of distinct morphological mutants were more in gamma rays. The induced elite phenotypes (blue flowered, double flowered, pigmented leaf, bushy and early mutants), having strong correlation with agronomic traits, will definitely be helpful in selection of improved mutants in subsequent generations.

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Broad‐few‐leaflets and outwardly curved wings: two new mutants of chickpea

Cited by 24 publications

References 8 publications

Induce Physical and Chemical Mutagenesis for Improvement of Yield Attributing Traits and their Correlation Analysis in Chickpea

Induce Physical and Chemical Mutagenesis for Improvement of Yield Attributing Traits and their Correlation Analysis in Chickpea

Mutagenic Effectiveness and Efficiency of Gamma Rays and HZ with Phenotyping of Induced Mutations in Lentil Cultivars

Quantitative Analysis of Induced Phenotypic Diversity in Chickpea Using Physical and Chemical Mutagenesis

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