Cytogenetical Studies on Ecological Races of &lt;i&gt;Mecardonia dianthera&lt;/i&gt; (SW) Pennel

Kaul, M. L. H.

doi:10.1508/cytologia.40.97

Cited by 2 publications

(3 citation statements)

References 6 publications

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“…Whereas, among the varieties maximum diameter of main stem (0.66 cm) was recorded in variety Shinaton V3 and minimum (0.53 cm) in Raja Pandharpuri V1 as against control (0.79 cm). The results obtained are in conformity with the findings of Verma et al (2018) [12,20] , Kaul (1975) [9] when treated with colchicine. And in EMS treated plant population Hridhya and Remesh (2016) [7] , Prabhukumar et al (2015) [15] found similar result.…”

Section: Resultssupporting

confidence: 92%

“…The decrease in plant height after exposure of the rooted cuttings to the colchicine and EMS has been due to disturbances of auxin synthesis and chromosomal aberrations. It was agreed with the results of Gupta and Gill (1985) [5] in Chrysanthemum coronarium when treated with colchicine and Vaidya et al (2016) [9] and Kapadiya et al (2014) [8] also have similar opinion when treated with EMS in chrysanthemum. There was significant decreased in number of branches plant -1 over control T10 (19.63) in chemical mutagen maximum branches plant -1 (17.61) was recorded at 0.01% EMS (T4) which was at par with T1 (17.11), T5 (16.16) and minimum (11.46) branches plant -1 were observed in 0.03% colchicine T3.…”

Section: Resultssupporting

confidence: 90%

“…The results obtained in present investigation are in conformity with the findings of Verma et al (2018) [12,20] observed that plant spread have been reduced with the colchicine treatment in Chrysanthemum carinatum. Kaul (1975) [9] also have same opinion. Similarly in EMS plant spread reduced at treated plants in Dendranthema grandiflora Tzvelev, reported by Padmadevi and Janaharlal (2011) [14] .…”

Section: Resultsmentioning

confidence: 59%

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Effect of chemical mutagens on growth and flowering of chrysanthemum varieties in VM1 generation

Gn¹,

Yadlod²,

Ak³

et al. 2020

Int. J. Chem. Stud.

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A field experiment was carried out at Department of Horticulture, Vasantrao Naik Marathwada Krishi Vidyapeeth Parbhani. (Maharashtra) during kharif season of the year 2017-2018. The experiment was laid out in Factorial Randomised Block Design with thirty treatment combinations. The treatments comprised of two factors i.e. factor A and factor B. Factor A consist of 3 varieties (V1-Raja Pandharpuri,V2-Brown and V3-Shinaton) and factor B consist of 10 levels of chemical mutagen (colchicine T1 -0.01%, T2 -0.02%, T3 -0.03%, T4 -Ethylmethanesulphonate (EMS) 0.01%, T5 -0.05%, T6 -0.1%, T7 -0.5%, T8 -1.0%, T9 -1.5%,T10 -Control) in Chrysanthemum. The different treatments to rooted cuttings of chrysanthemum varieties with colchcine and EMS had significantly influenced the vegetative and flowering characters and also create the variability. Significant reduction occurs in both colchicine and EMS treated seedlings of chrysanthemum varieties in terms of plant height, branches plant -1 , plant spread, Diameter of main stem and Number of leaves plant -1 Whereas leaf area and Petiole length was increased due to the colchicines and decreased due to EMS treated population of chrysanthemum varieties over control. The higher dose of colchicine and EMS delayed the flower bud initiation, flower opening and 50% flowering.

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Section: Resultssupporting

confidence: 92%

Section: Resultssupporting

confidence: 90%

Section: Resultsmentioning

confidence: 59%

See 1 more Smart Citation

Effect of chemical mutagens on growth and flowering of chrysanthemum varieties in VM1 generation

Gn¹,

Yadlod²,

Ak³

et al. 2020

Int. J. Chem. Stud.

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Polyploidy and habitat differentiation in Dactylis glomerata L. from Galicia (Spain)

Lumaret¹,

Guillerm²,

Delay³

et al. 1987

Oecologia

164

138

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The microdistribution of diploid and tetraploid plants of Dactylis glomerata L. was examined and related to their immediate environment in several sites in central Galicia, where morphologically indistinguishable individuals of both ploidies grow in sympatry. The two related cytotypes differed in habitat preference. Diploids were mainly confined to the low-density forest-floor habitat in woodlands of mostly ancient origin, whereas tetraploids were widespread in varied habitats but clearly predominant in open areas, particularly in disturbed anthropic sites. The in situ comparison of plant performance showed that where plants of each ploidy were more common they produced more tillers, panicles and seeds. This habitat preference closely reflected differences in life-history characteristics. The tetraploids had an early and short flowering time almost always completed before the aestival drought, whereas the diploids began to flower several weeks later and flowered throughout the drought. Comparisons along artificial gradients of soil water availability and light transmittance indicated that the cytotypes had distinct physiological requirements which probably originated in metabolic and more general genetic differentiation and could be directly attributable to ploidy. Habitat differentiation increases the species' colonizing ability. It also amplifies divergence in reproductive strategy between diploids and tetraploids, which reduces ineffective crossing between cytotypes and thereby permits them to coexist in sympatry. The effect of hybridization at the polyploid level on the differentiation between cytotypes was assessed from the recent introduction of a foreign tetraploid entity into the study area. Hybridization between the two distinct tetraploids was found to increase habitat differentiation between the diploids and the tetraploids, but the major part of this differentiation is probably attributable to ploidy itself.

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Cytogenetical Studies on Ecological Races of <i>Mecardonia dianthera</i> (SW) Pennel

Cited by 2 publications

References 6 publications

Effect of chemical mutagens on growth and flowering of chrysanthemum varieties in VM1 generation

Effect of chemical mutagens on growth and flowering of chrysanthemum varieties in VM1 generation

Polyploidy and habitat differentiation in Dactylis glomerata L. from Galicia (Spain)

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