Search results for "Gametic"
showing 10 items of 29 documents
In vitro anther culture of several cultivars of Citrus sinensis and Citrus clementina.
2012
Coltura in vitro di microspore isolate per il miglioramento genetico di Olea europaea L.
2013
Gli aploidi (piante con un numero gametofitico di cromosomi nello sporofito: n invece di 2n) ed i doppio-aploidi (aploidi che hanno raddoppiato il numero di cromosomi spontaneamente o in maniera indotta) trovano numerose applicazioni nel miglioramento genetico vegetale, ed in particolare, nella mutagenesi, nella selezione in vitro, nella trasformazione, nell’utilizzo della variabilità gametoclonale ed anche nel sequenziamento del genoma e negli studi di genomica funzionale. Pertanto, essi costituiscono uno strumento biotecnologico particolarmente interessante nel miglioramento genetico delle piante. Ai fini dell’ottenimento dell’omozigosi nell’olivo, come in tutte le piante arboree, caratte…
Correlation of sequential floral development and male gametophyte development and preliminary results on anther culture in Opuntia ficus-indica.
2005
Study on isolated microspore culture in Citrus sinensis Osbeck cv. Moro, a blood orange cultivar].
2014
Citrus biotechnology
2020
Agricultural crops that can better withstand the changing climatic and pathogen landscape have been produced through natural selection throughout the millennia and, in recent years, through the process of human-assisted plant breeding and selection. However, a lack of genetic diversity in many commercially cultivated crops (due to monoculture) has made them more vulnerable to biotic and abiotic stresses (Esquinas-Alcazar, 2005; Keneni et al., 2012). Citrus, belonging to the Rutaceae family, is one of the most important commercial woody fruit crops in the tropical and subtropical areas of the world. The origin of citrus is traced back to parts of tropical and subtropical Southeast Asia (Wu e…
Utilizzo dell’embriogenesi gametica per il miglioramento genetico dei Citrus.
2013
Embryo production through isolated microspore culture in Citrus clementina Hort. ex Tan., cv. Monreal Rosso .
2013
Microspore-derived embryo recovery trough isolated microspore culture in Corylus avellana L.
2014
Genetic sex determination and sex-specific lifespan in tetrapods – evidence of a toxic Y effect
2020
ABSTRACTSex-specific lifespans are ubiquitous across the tree of life and exhibit broad taxonomic patterns that remain a puzzle, such as males living longer than females in birds and vice versa in mammals. The prevailing “unguarded-X” hypothesis (UXh) explains this by differential expression of recessive mutations in the X/Z chromosome of the heterogametic sex (e.g., females in birds and males in mammals), but has only received indirect support to date. An alternative hypothesis is that the accumulation of deleterious mutations and repetitive elements on the Y/W chromosome might lower the survival of the heterogametic sex (“toxic Y” hypothesis). Here, we report lower survival of the heterog…