Hieracium subgen. Pilosella: Pollen viability in sexual, apomictic and sterile plants.

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F06%3A00017149" target="_blank" >RIV/00216224:14310/06:00017149 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Hieracium subgen. Pilosella: Pollen viability in sexual, apomictic and sterile plants.

Original language description

Pollen stainability of apomictic and sexual taxa and sterile hybrids in Hieracium subgen. Pilosella was tested. Pollen samples were obtained from sexual tetraploid Hieracium bauhini, apomictic pentaploid and hexaploid H. bauhini, sexual tetraploid H. densiflorum, apomictic pentaploid H. pilosellinum, sterile triploid H. pistoriense and sterile pentaploid H. brachiatum. Two different stains were used to compare pollen stainability: acetocarmine and Alexanders stain. The highest pollen stainability (93.7-98.4%) with low intrapopulation variability was found in tetraploid sexual Hieracium bauhini and H. densiflorum. Higher inter- and intrapopulation stainability variability was discovered among the apomictic plants. The lowest stainability was found in sterile triploid Hieracium pistoriense (33.6%) and pentaploid H. brachiatum (29.6%). This result together with the sympatric occurrence of both taxa with possible parental species and their intermediate morphology confirm the hybrid origin

Czech name

Pylová viabilita sexuálních, apomiktických a sterilních rostlin z podrodu Pilosella rodu Hieracium.

Czech description

Pollen stainability of apomictic and sexual taxa and sterile hybrids in Hieracium subgen. Pilosella was tested. Pollen samples were obtained from sexual tetraploid Hieracium bauhini, apomictic pentaploid and hexaploid H. bauhini, sexual tetraploid H. densiflorum, apomictic pentaploid H. pilosellinum, sterile triploid H. pistoriense and sterile pentaploid H. brachiatum. Two different stains were used to compare pollen stainability: acetocarmine and Alexanders stain. The highest pollen stainability (93.7-98.4%) with low intrapopulation variability was found in tetraploid sexual Hieracium bauhini and H. densiflorum. Higher inter- and intrapopulation stainability variability was discovered among the apomictic plants. The lowest stainability was found in sterile triploid Hieracium pistoriense (33.6%) and pentaploid H. brachiatum (29.6%). This result together with the sympatric occurrence of both taxa with possible parental species and their intermediate morphology confirm the hybrid origin

Type

D - Article in proceedings

CEP classification

EF - Botany

OECD FORD branch

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Project

<a href="/en/project/LC06073" target="_blank" >LC06073: Biodiversity Research Center</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2006

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

9th International Hieracium Workshop, Trenta (Julian Alps), Slovenia.

ISBN

961-6568-61-2

ISSN

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e-ISSN

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Number of pages

2

Pages from-to

31-32

Publisher name

Jovan Hadži Institute of Biology, Scientific Research

Place of publication

Ljubljana

Event location

Trenta (Julian Alps), Slovenia

Event date

Jan 1, 2006

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

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