Results 41 to 50 of about 144,774 (218)
G3: Genes, Genomes, Genetics, 2017 Wild Helianthus species are a valuable genetic resource for the improvement of cultivated sunflower. We report the discovery and characterization of a unique high frequency production of triploids when cultivated sunflower was pollinated by specific ...
Zhao Liu +6 more
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Plants, 2023 Historically, crosses between Medicago sativa (alfalfa) and M. arborea with alfalfa as the seed parent failed, as did crosses using M. arborea as the seed parent. Thus, a reproductive barrier kept the two species isolated until early in this century. The
Edwin Bingham, John Irwin
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The origin of polyploids via 2n gametes in Vaccinium section Cyanococcus [PDF]
Euphytica, 1991 The production of 2n pollen (pollen with the sporophytic chromosome number) was evaluated in 4x and 6x taxa of Vaccinium section Cyanococcus. Mean frequencies of 2n pollen producers were 17.1% and 8.3% in natural 4x and 6x populations, respectively. The frequency of 2n pollen producers in the 4x species ranged from 8.6% (V.
Ortiz, Rodomiro +3 more
openaire +2 more sources
Ciência Rural, 2012 The Alchornea triplinervia specie belongs to the Euphorbiaceae family, one of the main families of the Brazilian flora. In order to contribute to a better understanding of the specie, a counting of chromosome number and the microsporogenesis analysis of ...
Sara Mataroli de Godoy +3 more
doaj +1 more source
CENH3-GFP: a visual marker for gametophytic and somatic ploidy determination in Arabidopsis thaliana [PDF]
, 2016 Background: The in vivo determination of the cell-specific chromosome number provides a valuable tool in several aspects of plant research. However, current techniques to determine the endosystemic ploidy level do not allow non-destructive, cell-specific
Angenon, Geert +4 more
core +5 more sources
Polyploidy breaks speciation barriers in Australian burrowing frogs Neobatrachus [PDF]
, 2020 Polyploidy has played an important role in evolution across the tree of life but it is still unclear how polyploid lineages may persist after their initial formation.
Booker, William +11 more
core +4 more sources
Differences in the genetic structure of citrus triploid hybrids recovered from 2x X 2x and 4x X 2x sexual hybridizations [PDF]
, 2015 Citrus triploid hybrids can be recovered by 2x X 2x hybridisations as a consequence of the formation of 2n gametes or by interploid hybridisation. Most of the 4x parents used in our program are doubled-diploid (DD), also known as autotetraploid.
Aleza, Pablo +4 more
core
Wheat breeding approaches for designing wheat to thrive in a warmer world
PLANTS, PEOPLE, PLANET, EarlyView.Wheat is a vital food crop, accounting for approximately 20% of daily calories and protein consumed worldwide. However, modern‐day wheat is under pressure from global change. The improvement rate of wheat yields is not keeping up with the demand of our growing population. Furthermore, abiotic and biotic stressors are becoming more prevalent. This paper
Jake Hill, Surbhi Grewal, Stella Edwards
wiley +1 more source
Andrology, EarlyView.ABSTRACT Background Infertility is a pressing global health concern, affecting one in six couples worldwide. The failure rate for assisted reproductive technologies (ART) cycles remains at approximately 78%, with limited improvements often attributed to a lack of technological innovation.
Mehran Dabiri +3 more
wiley +1 more source
The strong competitive role of 2n pollen in several polyploidy hybridizations in Rosa hybrida
BMC Plant Biology, 2019 Background 2n pollen play a strong competitive role in hybridization and breeding of multiploids in Rosa hybrida. The ploidy inheritable characteristic of ‘Orange Fire’ × ‘Old Blush’ were analyzed.
Shu-min Gao +4 more
doaj +1 more source