Sentence examples for reproduction barriers from inspiring English sources

This first report on R-gene isolation from the Zingiber secondary gene pool is pivotal in designing strategies for engineering resistance in ginger, which is otherwise not amenable to conventional improvement programs owing to sexual reproduction barriers.

The advantages of gene engineering technologies compared with traditional hybridization are (1) hybridization impoverishes the whole genomes of the two parents, and (2) hybridization enables transgenosis only from closely related plants that have no reproduction barriers.

Effective pollen movement and spatial proximity of different species of eucalypts, which has limited reproduction barriers provides sufficient information for distances required for buffer zone in seed orchards and to maintain genetic integrity of breeding populations in exotic and natural locations.

In addition, the parental exclusion probability values are adequate for progeny analysis and paternity tests for further identification of reproduction barriers and identification of hybridization between species of all American and West African Rhizophora species.

However, the redefinition of these varieties as the four Aureobasidium species (see above) implies that the lack of the recombination between the varieties might be simply a consequence of interspecific reproduction barriers and not a sign of asexuality.

Although members of different CBC clades apparently always fall into different Z clades, which are isolated by reproduction barriers such as inability of gamete fusion or other pre-zygotic isolation mechanisms, it is still possible that the members of the same CBC clade are unable to mate, and thus fall into two or more Z clades [ 15, 27].

These authors suggested that the genes in these spots called 'speciation islands' are responsible for the premating reproduction barrier [ 21, 22] and the ecological adaptation of the forms to specific environments.

This abrupt change in genes involved in reproduction could potentially lead to reproductive barriers and thus play an important role in speciation.

In this way, floral metal accumulation may act as a reproductive barrier that favours reproduction between plants growing in similar soil environments, selecting against species that have serpentine and non-serpentine populations in close proximity to each other.

Alleles that grant some evolutionary advantage (reproduction and survival) may overcome almost any reproductive barrier, and may eventually become fixed in all exposed gene pools (Piálek and Barton 1997; Morjan and Rieseberg 2004).

Although there is no reproductive barrier between SP and SLC [ 13], the Andes mountains impose strong physical and ecological barriers for cross reproduction among these species.