Wyniki wyszukiwania

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Genetics of gametophytic apomixis - a historical sketch

100%

Nogler G. A.

Polish Botanical Studies

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1994

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tom 08

2

The kind of pollination and ability to parthenocarpy of pepino (Solanum muricatum Ait.)

84%

Kowalczyk K.

Folia Horticulturae

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2008

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tom 20

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nr 1

3

Intraindividual variability of endosperm in autonomously apomictic Chondrilla juncea L.

84%

Koscinska-Pajak M.

Acta Biologica Cracoviensia. Series Botanica

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1998

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tom 40

The data concerning endosperm type in Chondrilla juncea L. from Europe, Asia and Australia have been the subject of controversy. This study investigated the problem embryologically in an individual plant growing on an experimental field. Two endosperm types, nuclear and cellular, were observed to be present in inflorescences of the same plant. Both types of endosperm were formed after open pollination as well as after emasculation; however, cellular endosperm predominated slightly after open pollination. The development of endosperm preceded embryo development independently of endosperm type. Intraspecific variability of endosperm type in the investigated plant seems to be genetically conditioned, and it may be modified by external conditions.

4

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Crossing method for the further genetic improvement of Silybum marianum (L.) Gaertn

67%

Martinelli T.

Acta Scientiarum Polonorum. Hortorum Cultus

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2018

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tom 17

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nr 3

Silybum marianum (milk thistle) is among the top selling herbal products in the U.S., in Italy and in other countries. Despite its economic importance as an officinal and medicinal species, only few improved genotypes exist and the species is still marked by traits that are typical of non-domesticated plants. Based on this evidence, further genetic improvement is required for the complete exploitation of milk thistle as a crop species. The first step in order to allow further breeding programmes of the species is the setup of a reliable crossing protocol. The present paper, after a brief review of S. marianum flower anatomy, describes a crossing method for this plant. The correct phenological stage for emasculation is BBCH growth stage 54. If manual pollination is repeated two days after emasculation, a significant increase of F1 fruits can be obtained. By utilizing the proposed protocol, an average 70–90 florets per flower head are emasculated and percentage of success (F1 fruits harvested) usually ranges between 27 and 70%. The proposed crossing protocol will constitute an important tool in order to allow the further genetic improvement of this species.

Ograniczanie wyników

1 Acta Biologica Cracoviensia. Series Botanica

1 Acta Scientiarum Polonorum. Hortorum Cultus

1 Folia Horticulturae

1 Polish Botanical Studies

1 Koscinska-Pajak M.

1 Kowalczyk K.

1 Martinelli T.

1 Nogler G. A.

1 2018

1 2008

1 1998

1 1994

Genetics of gametophytic apomixis - a historical sketch

The kind of pollination and ability to parthenocarpy of pepino (Solanum muricatum Ait.)

Intraindividual variability of endosperm in autonomously apomictic Chondrilla juncea L.

Crossing method for the further genetic improvement of Silybum marianum (L.) Gaertn