Results 61 to 70 of about 144,774 (218)

Parental heterozygosity and origin of 2n gametes in mandarin: Two key parameters for Citrus triploid breeding projects [PDF]

open access: yes, 2008
Citrus are the most important fruit crop in Spain and worldwide. Spain is the fifth producing country and the first in fresh fruit exportation. Seedlesness is a key characteristic for the fresh fruit market.
Cuenca, José   +2 more
core  

Leaf transcriptome differences between diploid and tetraploid bahiagrass

open access: yesThe Plant Genome, Volume 19, Issue 1, March 2026.
Abstract Polyploid individuals of the subtropical forage grass Paspalum notatum Flüggé (bahiagrass) exhibit distinct phenotypes, including apomixis, enhanced vigor, gigas effects, and increased stress tolerance. While apomixis‐based breeding programs supported by molecular tools have improved agronomic traits such as growth habit, forage dry matter ...
Maricel Podio   +5 more
wiley   +1 more source

Colchicine did not affect the viability of induced 2n pollen in Populus tomentosa

open access: yesSilva Fennica, 2019
Colchicine is widely used as a mutagen to induce production of diploid gametes in plants. However, whether colchicine affects induced pollen viability remains unclear.
Yan Liu   +4 more
doaj   +1 more source

Assessment of the Female Fertility of 26 Commercial Lantana camara Cultivars and Six Experimental Lines

open access: yesHortScience, 2020
Lantana camara is an important plant for the environmental horticultural industry, yet it can be invasive, cross-pollinating with native lantana and dispersing fruit (and seeds) to natural and agricultural lands. Identification and development of sterile
David M. Czarnecki II , Zhanao Deng
doaj   +1 more source

Mutations in AtPS1 (Arabidopsis thaliana parallel spindle 1) lead to the production of diploid pollen grains. [PDF]

open access: yesPLoS Genetics, 2008
Polyploidy has had a considerable impact on the evolution of many eukaryotes, especially angiosperms. Indeed, most--if not all-angiosperms have experienced at least one round of polyploidy during the course of their evolution, and many important crop ...
Isabelle d'Erfurth   +7 more
doaj   +1 more source

Hexavalents in spermatocytes of Robertsonian heterozygotes between Mus m. domesticus 2n 26 from the Vulcano and Lipari Islands (Aeolian Archipelago, Italy) [PDF]

open access: yes, 2018
The size and shape of the chromosomes, as well as the chromosomal domains that compose them, are determinants in the distribution and interaction between the bivalents within the nucleus of spermatocytes in prophase I of meiosis.
Eliana Ayarza   +6 more
core   +3 more sources

Chromosome stickiness during meiotic behavior analysis of Passiflora serrato-digitata L. (PassifloraCEAE) Aderência cromossômica durante a análise do comportamento meiótico de Passiflora serrato-digitata L (PassifloraCEAE)

open access: yesCiência Rural, 2011
Almost 90% of species of the genus Passiflora are native to the American continent, with high commercial value due to the fact that some species are used for human food while others have ornamental and medical qualities.
Paulo Roberto Peres Kiihl   +4 more
doaj  

B chromosome in Plantago lagopus Linnaeus, 1753 shows preferential transmission and accumulation through unusual processes

open access: yesComparative Cytogenetics, 2017
Plantago lagopus is a diploid (2n = 2x =12) weed belonging to family Plantaginaceae. We reported a novel B chromosome in this species composed of 5S and 45S ribosomal DNA and other repetitive elements. In the present work, presence of B chromosome(s) was
Manoj K. Dhar   +2 more
doaj   +3 more sources

Cytogenetic factors decreasing the fertility of pollen and cobs during clogging of tetraploid maize with triploid grains (Zea mays L.)

open access: yesТруды по прикладной ботанике, генетике и селекции, 2022
Background. Clogging of tetraploid maize crops with triploid grains leads to a decrease in grain yield and the destruction of the genome’s stability. Searching for the reasons of the tetraploid genome’s decomposition as well as solving the problem of ...
E. B. Khatefov   +2 more
doaj   +1 more source

2n Gamete formation in the genus Brachiaria (Poaceae: Paniceae). [PDF]

open access: yes, 2011
Microsporogenesis of several Brachiaria species of the Brazilian collection at Embrapa Beef Cattle has been analyzed in detail. This paper reports abnormal cytokinesis in three accessions of three different species (Brachiaria humidicola, 2n = 4x = 36 ...
BOLDRINI, K. R.   +5 more
core  

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