Development of Apomictic 56-Chromosomal Maize- Tripsacum Hybrids: A Potential Breakthrough in Heterosis Fixation.

Autor:	Sokolov VA; Laboratory of Plant Cytology and Apomixis, Institute of Molecular and Cell Biology, Siberian Branch of the Russian Academy of Sciences, Academician Lavrentyev Avenue, 8/2, 630090 Novosibirsk, Russia., Panikhin PA; Laboratory of Plant Cytology and Apomixis, Institute of Molecular and Cell Biology, Siberian Branch of the Russian Academy of Sciences, Academician Lavrentyev Avenue, 8/2, 630090 Novosibirsk, Russia.; Laboratory of Food Plants Introduction, Central Siberian Botanical Garden, Siberian Branch of the Russian Academy of Sciences, Zolotodolinskaya Street, 101, 630090 Novosibirsk, Russia., Plotnikov KO; Sector of Molecular Genetic Principles of Regeneration, Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Akademika Lavrentieva Avenue, 10, 630090 Novosibirsk, Russia., Chepurnov GY; Laboratory of Agricultural Plant Biotechnology, Siberian Research Institute of Plant Growing and Breeding, C-200 Avenue, 5/1, 630501 Krasnoobsk, Russia., Blinov AG; Laboratory of Plant Cytology and Apomixis, Institute of Molecular and Cell Biology, Siberian Branch of the Russian Academy of Sciences, Academician Lavrentyev Avenue, 8/2, 630090 Novosibirsk, Russia.; Sector of Molecular Genetic Principles of Regeneration, Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Akademika Lavrentieva Avenue, 10, 630090 Novosibirsk, Russia.
Jazyk:	angličtina
Zdroj:	Plants (Basel, Switzerland) [Plants (Basel)] 2024 Aug 01; Vol. 13 (15). Date of Electronic Publication: 2024 Aug 01.
DOI:	10.3390/plants13152138
Abstrakt:	Maize ( Zea mays L.) is one of the most demanded grain crops in the world. Currently, production has exceeded one billion tons and is increasing by 3-5% annually. Such growth is due to the genetic potential of the crop and the use of heterosis F1 hybrids in production. However, the need to produce first-generation seed annually poses significant challenges and is an economically costly technology. A solution to this problem may be the transfer of the asexual (apomictic) mode of reproduction to maize from its wild relative, eastern gamagrass ( Tripsacum dactyloides L.). In this work, we report the production of 56-chromosome apomictic hybrids of maize ( Zea mays L.) with eastern gamagrass ( T. dactyloides L.) with restored anther fertility. The mode of reproduction of the plant was confirmed by counting chromosomes and sequencing the nuclear gene ( Pox3 ) and chloroplast tRNA-Leu ( trnL ) gene. These apomictic hybrids had karyotypes of 2n = 56 = [(10Zm(573MB) + 36Td) + 10Zm(611CB)] and 2n = 56 = [(10Zm(611CB) + 36Td) + 10Zm(611CB)]. The resulting hybrids can be widely used as a fodder crop.
Databáze:	MEDLINE
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