Polinização controlada em Araucaria angustifolia
نویسندگان
چکیده
منابع مشابه
Leaf anatomy of Araucaria angustifolia (Bertol.) Kuntze (Araucariaceae)
(Leaf anatomy of Araucaria angustifolia (Bertol.) Kuntze (Araucariaceae)). Immature and mature leaves of juvenile and adult plants of Araucaria angustifolia (Araucariaceae) were observed with the objective of updating the morphoanatomical data of the leaves of this species, which were restricted to basic descriptions in previous studies. The observations, made in optical allowed to establish an...
متن کاملPatterns of genetic diversity in southern and southeastern Araucaria angustifolia (Bert.) O. Kuntze relict populations
Habitat fragmentation and a decrease in population size may lead to a loss in population genetic diversity. For the first time, the reduction in genetic diversity in the northernmost limit of natural occurence (southeastern Brazil) of Araucaria angustifolia in comparison with populations in the main area of the species continuous natural distribution (southern Brazil), was tested. The 673 AFLPs...
متن کاملGenetic diversity and divergence applied to Enviromental services for Araucaria angustifolia (Brazil)
Humans derive many utilitarian benefits from the environmental services of biotas and ecosystems.Yet ecosystem, species and genetic levels is increasingly lost from agricultural landscapes mainly due to maximisation of production [1,2]. The genetic variability is a result of several forces including mutation, recombination and gene flow. Allele frequencies are altered by natural selection and b...
متن کاملCloning and expression of embryogenesis-regulating genes in Araucaria angustifolia (Bert.) O. Kuntze (Brazilian Pine)
Angiosperm and gymnosperm plants evolved from a common ancestor about 300 million years ago. Apart from morphological and structural differences in embryogenesis and seed origin, a set of embryogenesis-regulating genes and the molecular mechanisms involved in embryo development seem to have been conserved alike in both taxa. Few studies have covered molecular aspects of embryogenesis in the Bra...
متن کاملMating system of monoecious Araucaria angustifolia (Bert.) O. Kuntze, a predominately dioecious conifer species
Background Araucaria angustifolia (Bert.) O. Kuntze is a mainly dioecious species that reproduces through outcrossing. However, some monoecious trees have been identified and they may reproduce through self-fertilization. The objective of this study was to confirm the expected relatedness of self-sibs of hand self-pollinated monoecious seed trees, and to investigate the mating system of open-po...
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ژورنال
عنوان ژورنال: CERNE
سال: 2012
ISSN: 0104-7760
DOI: 10.1590/s0104-77602012000200009