Tetraploid Festuca apennina is prone to produce triploid hybrid progeny when crossed with diploid Festuca pratensis

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389030%3A_____%2F18%3A00502562" target="_blank" >RIV/61389030:_____/18:00502562 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1007/978-3-319-89578-9_6" target="_blank" >http://dx.doi.org/10.1007/978-3-319-89578-9_6</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/978-3-319-89578-9_6" target="_blank" >10.1007/978-3-319-89578-9_6</a>

Result language

angličtina

Original language name

Tetraploid Festuca apennina is prone to produce triploid hybrid progeny when crossed with diploid Festuca pratensis

Original language description

Festuca apennina De Not. is a species growing at altitudes of 1100 to 2000 m a.s.l. in different regions of Europe. To test cross fertility of different cytotypes of F. apennina, pairwise crosses were made with tetraploid and triploid F. apennina, as well as diploid and colchicine-induced tetraploid Festuca pratensis Huds. Tetraploid F. apennina appeared to be quite cross-fertile with diploid F. pratensis and produced triploid progeny in both cross directions. When F. apennina plants were pollinated with diploid F. pratensis, they yielded even more seed per inflorescence than those pollinated with another F. apennina plant. About 25% of the progeny of this cross were triploids, the remaining 75% were tetraploid, presumably resulting from self-pollination. Much less seeds were obtained on diploid F. pratensis pollinated with F. apennina, but the progeny consisted of as much (52%) triploid hybrids as of diploid selfs (48%). Seeds harvested on F. apennina giving rise to triploid progeny appeared to have no cold requirement for germination, as opposed to tetraploid progeny from self-pollination or crosses among F. apennina. Colchicine-induced tetraploids and diploids of F. pratensis were much less cross-fertile. Few viable seeds were obtained, with a great majority (91%) resulting from self-pollination, with only 9% triploid hybrids. The surprisingly high cross fertility of tetraploid F. apennina with diploid F. pratensis, the apparent absence of a triploid block in their progeny, and the fact that seeds of F. apennina giving rise to triploid progeny have no cold requirement, probably contribute to the frequent occurrence of triploid forms at the low end of F. apennina altitudinal distribution.

Czech name

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Czech description

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Type

C - Chapter in a specialist book

CEP classification

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OECD FORD branch

10603 - Genetics and heredity (medical genetics to be 3)

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

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

Book/collection name

Breeding Grasses and Protein Crops in the Era of Genomics

ISBN

978-3-319-89577-2

Number of pages of the result

6

Pages from-to

33-38

Number of pages of the book

267

Publisher name

Springer

Place of publication

Cham

UT code for WoS chapter

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