<abstract xmlns="http://www.w3.org/1999/xhtml">

<p><italic>Hippeastrum</italic> sp. is a popular cut flower and a popular potted plant, currently occupying the 11<sup>th</sup> position among cut flowers sold on the Dutch flower auctions. <italic>Hippeastrum</italic> × <italic>chmielii</italic> was bred by Henryk Chmiel at the Warsaw University of Life Sciences (WULS), Poland. The aim of this study was designed to test the ability of two clones of <italic>H</italic>. × <italic>chmielii</italic> to reproduce generatively by pollinating by three cultivars of <italic>Hippeastrum hybridum</italic> – ‘Gervase’, ‘Rio Negro’ and ‘Royal Velvet’. Pollen viability was tested by germination on the medium and by acetocarmine staining. The receptiveness of the stigmas and ovules of <italic>H</italic>. × <italic>chmielii</italic> and thus their ability to possibly accept compatible pollen were checked by staining with red alizarin. The viability of pollen grains of tested cultivars was estimated at 66.4–83.0% and their high ability to develop pollen tube was found. It was determined that the embryos of both <italic>H</italic>. × <italic>chmielii</italic> clones were fully receptive. A total of 72 crossings were performed in 6 combinations. Seeds collected about 1 month after pollination were germinated immediately after harvest either on moist tissue paper on Petri dishes or in jars with distilled water. After 28 days the percentage of germinated seeds ranged between 48.3% and 77.9%, for different crosses. In the case of seeds obtained from crossing <italic>H</italic>. × <italic>chmielii</italic> clone 18 × <italic>H. hybridum</italic> ‘Gervase’ a higher average percentage of germinated seeds was obtained in jars while no differences were noted between the germination methods in other cases.</p>
</abstract>

Hippeastrum sp. is a popular cut flower and a popular potted plant, currently occupying the 11th position among cut flowers sold on the Dutch flower auctions. Hippeastrum × chmielii was bred by Henryk Chmiel at the Warsaw University of Life Sciences (WULS), Poland. The aim of this study was designed to test the ability of two clones of H. × chmielii to reproduce generatively by pollinating by three cultivars of Hippeastrum hybridum – ‘Gervase’, ‘Rio Negro’ and ‘Royal Velvet’. Pollen viability was tested by germination on the medium and by acetocarmine staining. The receptiveness of the stigmas and ovules of H. × chmielii and thus their ability to possibly accept compatible pollen were checked by staining with red alizarin. The viability of pollen grains of tested cultivars was estimated at 66.4–83.0% and their high ability to develop pollen tube was found. It was determined that the embryos of both H. × chmielii clones were fully receptive. A total of 72 crossings were performed in 6 combinations. Seeds collected about 1 month after pollination were germinated immediately after harvest either on moist tissue paper on Petri dishes or in jars with distilled water. After 28 days the percentage of germinated seeds ranged between 48.3% and 77.9%, for different crosses. In the case of seeds obtained from crossing H. × chmielii clone 18 × H. hybridum ‘Gervase’ a higher average percentage of germinated seeds was obtained in jars while no differences were noted between the germination methods in other cases.

Evaluation of the possibility of obtaining viable seeds from the cross-breeding <italic>Hippeastrum</italic> × <italic>chmielii</italic> Chm. with selected cultivars of <italic>Hippeastrum hybridum</italic> Hort.

Section of Ornamental Plants, Institute of Horticultural Sciences

Folia Horticulturae

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Evaluation of the possibility of obtaining viable seeds from the cross-breeding  ×  Chm. with selected cultivars of  Hort.

Hippeastrum sp. is a popular cut flower and a popular potted plant, currently occupying the 11th position among cut flowers sold on the Dutch flower auctions....

Evaluation of the possibility of obtaining viable seeds from the cross-breeding Hippeastrum × chmielii Chm. with selected cultivars of Hippeastrum hybridum Hort.

Article Category: Original Article

Published Online: Jun 05, 2021

Page range: 185 - 194

Received: Nov 24, 2020

Accepted: Apr 19, 2021

DOI: https://doi.org/10.2478/fhort-2021-0014

Keywords
amaryllis, fertilisation, germination, pollen, pollen tube, stigma

© 2021 Przemysław Marciniak et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Evaluation of the possibility of obtaining viable seeds from the cross-breeding Hippeastrum × chmielii Chm. with selected cultivars of Hippeastrum hybridum Hort.

Article Category: Original Article

Published Online: Jun 05, 2021

Page range: 185 - 194

Received: Nov 24, 2020

Accepted: Apr 19, 2021

DOI: https://doi.org/10.2478/fhort-2021-0014

Keywordsamaryllis, fertilisation, germination, pollen, pollen tube, stigma

© 2021 Przemysław Marciniak et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
amaryllis, fertilisation, germination, pollen, pollen tube, stigma