ploidy modifications, polyploidy/aneuploidymaize, Ac–Dc of transposable elementsSummary This chapter contains sections titled: Purpose and expected outcomes Classifying plants Rules of classification of plants Operational classification systems Types of variation among plants Origins of genetic variability ...
Symbiotic relationships occur between and among microorganisms, plants, and animals. The organisms involved gain shelter, nutrients, or protection from predators by interacting with one another. An example of a symbiotic relationship is the mutually beneficial interaction between a clownfish and an ...
Hybridization is a major creative force in evolution, especially in plants [1], but also of importance in animals [2–4]. Hybridization frequently leads to polyploidy, because the combination of two different genomes often disrupts meiosis and, hence, results in unreduced, diploid gametes [5, ...
The creation of a new species is something that, in animals, can take hundreds or thousands of generations as small changes build up over time. In plants, the creation of a new species can be virtually instantaneous as plants are generally better able to develop polyploidy than are animals....
The present study was conducted to polyploidy possibility induction of two Iranian endemic mint (Mentha mozaffarianii) ecotypes. For this purpose, three experiments were done. The first experiment was factorial, based on completely randomized design with three factors and three replications that rhizo...
The population study included 31 independent marama samples, with 24 collected from wild plants across various locations in Namibia: 3 from Tsjaka (S22 75.039 E19 20.712), 1 from Okamatapati (S20 40.233 E18 21.59), 8 from Aminuis (S23 38.000 E19 22.00), 4 from Osire (S21 02.031 E17 ...
Products like carotenoids, superoxide dismutases, and hydroperoxides and the gene duplication process via polyploidy work as the photoprotection devices. The genome composition of the organisms with a reduction in the number of bipyrimidine sequences also provides protection against exposure. ...
A new concept of cell totipotency is formulated, as expressed in plant cells when, by means of a meiotic-like process, they acquire a gametic condition. 展开 关键词: TOTIPOTENCY MITOSIS MEIOSIS CELL CYCLE SOMATIC EMBRYOGENESIS PLANT REGENERATION POLYPLOIDY SOMACLONAL VARIATION ...
Besides, the ploidy level among Opuntia spp. cause several problems in the analysis of codominant markers. The polyploidy level in Opuntia canrange from triploid (2n=3x=33) to octoploid (2n=8x=88). The ploidy level of Opuntia spp. depends on the population's origin. Opuntia spp. ...
POLYPLOIDYSOMACLONAL VARIATIONTotipotency is an unique property of plant cells. It is the capacity to repeat, starting from a single somatic cell, the developmental pathway normally followed by a fertilized egg in the ovary. This remarkable capacity, until now a puzzling phenomenon, is fully ...