Intra‐specific pollen polymorphism inMimosa pigra(Mimosaceae)
نویسندگان
چکیده
منابع مشابه
Intraspecific polymorphism to interspecific divergence: genetics of pigmentation in Drosophila.
Genetic changes contributing to phenotypic differences within or between species have been identified for a handful of traits, but the relationship between alleles underlying intraspecific polymorphism and interspecific divergence is largely unknown. We found that noncoding changes in the tan gene, as well as changes linked to the ebony gene, contribute to pigmentation divergence between closel...
متن کاملThe number of competitors providing pollen on a stigma strongly influences intraspecific variation in number of pollen apertures
Variation in the number of pollen apertures has been widely described among and within angiosperm species. Apertures are weak points of the pollen wall where the pollen tube germinates. Pollen aperture heteromorphism (pollen grains with different numbers of apertures in a single individual) is common in flowering plants, whereas polymorphism (among-individual variation) is rare. Previous work o...
متن کاملPollen tube development in Petunia hybrida following compatible and incompatible intraspecific matings.
Pollen tubes formed following compatible and incompatible intraspecific matings in Petunia have been examined with light and electron microscopes. Compatible and incompatible tubes develop in an identical fashion on the stigma but, on entry into the top 1 mm of the stylar transmitting tissue changes occur both to the cytology of the tubes and their rates of growth. The early cytological changes...
متن کاملAmplified fragment length polymorphism used for inter- and intraspecific differentiation of screwworms (Diptera: Calliphoridae).
Morphologically, early immature stages of the economically important pest called screwworms, Cochliomyia hominivorax (Coquerel) (Diptera: Calliphoridae), and non-pest secondary screwworms, Cochliomyia macellaria (Fabricius) (Diptera: Calliphoridae), are nearly indistinguishable. Correct identification is crucial to the ongoing eradication and exclusion program protecting the United States, Mexi...
متن کاملIntraspecific mitochondrial DNA polymorphism within the emerging filamentous fungal pathogen Trichoderma longibrachiatum.
The genetic diversity of the emerging fungal pathogen Trichoderma longibrachiatum was examined at the level of mitochondrial DNA. The 17 investigated strains, comprising nine clinical and eight non-clinical isolates, exhibited seven and ten different mitochondrial DNA profiles by using the restriction enzymes BsuRI and Hin6I, respectively. The sizes of mitochondrial DNAs varied from 34.9 to 39....
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Grana
سال: 1997
ISSN: 0017-3134,1651-2049
DOI: 10.1080/00173139709362617