Results 31 to 40 of about 144,774 (218)

Hybridization between wild and cultivated potato species in the Peruvian Andes and biosafety implications for deployment of GM potatoes [PDF]

open access: yes, 2008
The nature and extent of past and current hybridization between cultivated potato and wild relatives in nature is of interest to crop evolutionists, taxonomists, breeders and recently to molecular biologists because of the possibilities of inverse gene ...
Celis Gamboa, B.C.   +4 more
core   +4 more sources

GAMETAS NÃO REDUZIDOS NO MELHORAMENTO DE PLANTAS UNREDUCED GAMETES IN PLANT BREEDING

open access: yesCiência Rural, 2001
Nesta revisão são abordados o papel dos gametas não reduzidos (gametas 2n), ou seja, aqueles com o número somático de cromossomos, na origem dos poliplóides, e sua utilização no melhoramento genético de plantas.
Maria Teresa Schifino-Wittmann   +1 more
doaj   +1 more source

Searching for mechanisms behind meiotic abnormalities in Crotalaria spectabilis Roth

open access: yesCiência e Agrotecnologia, 2022
The identification of epigenetic marks associated with problems in the meiotic process can enlighten the mechanisms underlying the irregularities and the impacts in the genetic constitution of gametes.
Guilherme Tomaz Braz   +4 more
doaj   +1 more source

Fertilization fitness and offspring ploidy in 3x x 2x matings in potato. [PDF]

open access: yes, 2011
The main objective of the current research was to study the reproductive behaviour of artificial triploid potato hybrids between wild Solanum commersonii and the cultivated potato Solanum tuberosum.
AVERSANO, RICCARDO   +4 more
core   +1 more source

Problematic octaploid forms and a new chromosome number in the genus Achillea L., 2n = 126

open access: yesActa Societatis Botanicorum Poloniae, 2014
Among the offspring of a problematic form of Achillea sp., a 2n = 126 seedling which probably arose as the result of fusion of unreduced octo- and hexaploid gametes (72 + 54) was found along with seedlings having an octaploid chromosome number (2n = 72).
Janina Dąbrowska
doaj   +1 more source

Advances and Perspectives for Polyploidy Breeding in Orchids

open access: yesPlants, 2022
The orchid market is a dynamic horticultural business in which novelty and beauty command high prices. The two main interests are the development of flowers, from the miniature to the large and showy, and their fragrance.
Pablo Bolaños-Villegas, Fure-Chyi Chen
doaj   +1 more source

Genome composition of 'Elatior'-begonias hybrids analyzed by genomic in situ hybridisation [PDF]

open access: yes, 2010
Interspecific hybridization of various tuberous Begonia species hybrids with Begonia socotrana results in so-called 'Elatior'-begonias hybrids (B. x hiemalis Fotsch).
Laak, W.A.   +3 more
core   +2 more sources

Cold-induced male meiotic restitution in Arabidopsis thaliana is not mediated by GA-DELLA signaling [PDF]

open access: yes, 2018
Short periods of cold stress induce male meiotic restitution and diploid pollen formation in Arabidopsis thaliana by specifically interfering with male meiotic cytokinesis.
De Storme, Nico   +2 more
core   +2 more sources

Male Parent Identification of Triploid Rubber Trees (Hevea brasiliensis) and the Mechanism of 2n Gametes Formation

open access: yes, 2016
Eight triploids were screened among offspring of the rubber tree clone GT1 × different clones by flow cytometry and chromosome counting. Twenty-five simple sequence repeat (SSR) markers were screened to identify the origin of 2n gametes, to determine the
Peng-qiang Yao   +4 more
semanticscholar   +1 more source

Induction of 2n Male Gamete Formation and Creation of Sexual Polyploidy in Medicinal Dendrobium Based on Distant Hybridization

open access: yesGuangdong nongye kexue
【Objective】To create sexual polyploid resources of medicinal Dendrobium species via the 2n gamete pathway.【Method】Using D. officinale, D. aphyllum, and D. loddigesii as materials, we systematically observed the development of microspores in D. officinale
Renju LIU   +5 more
doaj   +1 more source

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