Results 111 to 120 of about 2,997 (195)

Pistil transcriptome analysis to disclose genes and gene products related to aposporous apomixis in Hypericum perforatum L. [PDF]

, 2017
Unlike sexual reproduction, apomixis encompasses a number of reproductive strategies,which permit maternal genome inheritance without genetic recombination and syngamy.
Altschmied, Lothar, Avesani, Linda, Barcaccia, Gianni, Galla, Giulio, Rizzo, Paride, Sharbel, Timothy F., Zenoni, Sara   +6 more
core   +2 more sources

Colchicine induced manifestation of abnormal male meiosis and 2n pollen in Trachyspermum ammi (L.) Sprague (Apiaceae)

Caryologia, 2021
Unreduced gametes are the key source for the natural polyploidization in plants, but process of its formation is very low in nature. Meiotic mutants are second source for the formation of 2n pollen.
harshita dwivedi
doaj  

Plant speciation through chromosome instability and ploidy change: Cellular mechanisms, molecular factors and evolutionary relevance

Current Plant Biology, 2014
Plant speciation and diversification strongly rely on structural changes in the nuclear genome, both at the whole ploidy and individual chromosome level.
Nico De Storme, Annaliese Mason
doaj   +1 more source

The Reproductive Biology of Limonium sinuatum and L. perezii—A Perspective for Future Breeding

Horticulturae
This review examines the reproductive biology of Limonium, mainly L. sinuatum and L. perezii, and explores the breeding strategies employed for these species.
Juana Cordoba-Sanchez, Ahmad Syahrian Siregar, Keith Funnell, Nick Roskruge, Ed Morgan   +4 more
doaj   +1 more source

Chromosome inheritance and reproductive barriers in backcrosses between two hybridizing Viviparus snail species [PDF]

, 2017
Hybridization must be followed by repeated backcrossing of the subsequent hybrid generations to the parental species for gene exchange between species to occur.
Martin, Oliver Y., Ribi, Georg, Sbilordo, Sonja H.   +2 more
core  

Differences in ploidy levels of interploidal crosses progenies between diploids and tetraploid somatic hybrids in citrus : S02P19 [PDF]

, 2012
One of the main objectives of citrus breeders is to obtain sterile mandarins that produce seedless fruits. Triploids are a response to these criteria. A way for triploid creation is sexual crosses between diploids and tetraploids.
Froelicher, Yann, Kamiri, Mourad, Ollitrault, Patrick, Poullet, T., Srairi, Ikbal   +4 more
core  

Induction of Unreduced Gamete in Phalaenopsis by N_2O Treatments [PDF]

Journal of the Faculty of Agriculture, Kyushu University, 2013
Prapassorn Wongprichachan, Kuang-Liang Huang, Yi-Mei Chou, Shan-Te Hsu, Tzu-Yu Liu, Hiroshi Okubo   +5 more
openaire   +1 more source

Clonal reproduction by seed of a cultivated hybrid plant: a new perspective for small-scale rice growers

Comptes Rendus Biologies
Transferring an asexual mode of reproduction by seeds (apomixis) to cultivated plants would enable clonal reproduction of heterozygous genotypes such as F1 hybrids with hybrid vigor (heterosis), facilitating their access and multiplication by small-scale
Vernet, Aurore, Meynard, Donaldo, Guiderdoni, Emmanuel   +2 more
doaj   +1 more source

Meiocyte size is a determining factor for unreduced gamete formation in Arabidopsis thaliana

, 2023
Polyploidy, the presence of more than two sets of chromosomes within a cell, is a widespread phenomenon in plants. The main route to polyploidy is considered through the production of unreduced gametes that are formed as a consequence of meiotic defects.
Yi, Jun, Kradolfer, David, Brownfield, Lynette, Ma, Yingrui, Piskorz, Ewa, Köhler, Claudia, Kohler, Claudia, Jiang, Hua   +7 more
openaire   +1 more source

Postglacial colonization and parallel evolution of metal tolerance in the polyploid Cerastium alpinum [PDF]

, 2005
The Fennoscandian flora is characterized by a high frequency of polyploids, probably because they were more successful than diploid plants in colonizing after the last Ice Age.
Nyberg Berglund, Anna-Britt
core