Results 61 to 70 of about 666 (162)

Cytomixis in pollen mother cells of Papaver dubium L.

open access: yesCYTOLOGIA, 1988
Cytomixis was recorded during microsporogenesis in Papaver dubium L., a member of the family Papaveraceae. The phenomenon was observed in all the stages of meiosis. Further, it was found that not only the frequency of cytomixis but the amount of chromatin transferred reduced with the advancement of meiosis. The pollen fertility was found to be affected
J. R. Bahl, B. R. Tyagi
openaire   +2 more sources

CYTOGENETIC STUDY OF GAMMA IRRADIATED LINES OF COTTON (GOSSYPIUM HIRSUTUM L.) [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2002
A cytogenetic study was performed on M4 generation of gamma irradiated lines of Shirpan cultivar of tetraploid cotton (Gossypium hirsutum L.). A significant difference was observed in cytogenetical characteristics such as the number and type of ...
doaj  

Meiotic behavior and its implications on the reproductive success of Arnebia euchroma (Royle ex Benth.) I.M.Johnst. (Boraginaceae), an important medicinal plant of Trans-Himalaya

open access: yesCaryologia
The present study reports the chromosome number, meiotic behavior and its relation with pollen fertility and seed set of Arnebia euchroma (Royle ex Benth.) I.M.Johnst. The species shows a chromosome count of 2n = 2x = 14.
Irfan Iqbal Sofi   +4 more
doaj   +1 more source

Cytological Analyses in ‘Niagara Branca’ Grape and in Its Somatic Mutant ‘Niagara Rosada’

open access: yesNotulae Botanicae Horti Agrobotanici Cluj-Napoca, 2014
An investigation in the microsporogenesis of two cultivars of grapes (Vitis L.), were carried out on ‘Niagara Branca’ and on its somatic mutant ‘Niagara Rosada’, aiming at ascertaining the normality of the microsporogenesis.
Neiva Izabel PIEROZZI   +1 more
doaj   +1 more source

Cytotaxonomy study of four populations of Astragalus anserinifolius Boiss. of section Malacothrix Bunge from Iran

open access: yesتاکسونومی و بیوسیستماتیک, 2013
In this research, meiotic chromosome number and the behavior of four populations of Astragalus anserinifolius Boiss. of Astragalus sect. Malacothrix were studied.
Massoud Ranjbar, Bahareh Mahmoudian
doaj  

Nonreduction via meiotic restitution and pollen heterogeneity may explain residual male fertility in triploid marine halophyte Limonium algarvense (Plumbaginaceae)

open access: yesCaryologia, 2019
The cosmopolitan halophylic genus Limonium (Plumbaginaceae) presents high cytogenetic interest because of the natural occurrence of diploid and polyploid variants.
Sofia I. R. Conceição   +2 more
doaj   +1 more source

Cytomixis in plants: causes, mechanisms and consequences

open access: yesRevista Brasileira de Biociências, 2011
A migração de organelas, produtos gênicos e material genético entre meiócitos por meio de conexões citoplasmáticas ou canais citomíticos é definida como citomixia. Esse fenômeno tem sido relatado em Leguminosae, Brassicaceae, Poaceae, Apocynaceae, Liliaceae, Rutaceae, entre outras famílias, sendo mais comumente observado entre células mãe dos grãos de ...
Pierre, Patrícia Maria Oliveira   +1 more
openaire   +1 more source

Meiotic behaviour and morpho-phenological variation in cut stock (Matthiola incana L.) flower

open access: yesFolia Horticulturae, 2017
Morpho-phenological and meiotic studies were performed in twelve cultivars of Matthiola incana. All of the cultivars were diploid (2n = 2x = 14) with basic chromosome number x = 7.
Irani Sepideh Famil, Arab Mostafa
doaj   +1 more source

Meiotic behavior of economically important plant species: the relationship between fertility and male sterility

open access: yesGenetics and Molecular Biology, 2000
Meiosis is an event of high evolutionary stability which culminates in a reduction of chromosome number. The normal and harmonious course of meiosis ensures gamete viability. The cytologic events of gametogenesis are controlled by a large number of genes
Maria Suely Pagliarini
doaj   +1 more source

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