The dominance model for heterosis explains culm length genetics in a hybrid sorghum variety

Abstract Heterosis helps increase the biomass of many crops; however, while models for its mechanisms have been proposed, it is not yet fully understood. Here, we use a QTL analysis of the progeny of a high-biomass sorghum F1 hybrid to examine heterosis. Five QTLs were identified for culm length and...

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Autores principales:	Shumpei Hashimoto, Tatsuro Wake, Haruki Nakamura, Masaki Minamiyama, Satoko Araki-Nakamura, Kozue Ohmae-Shinohara, Eriko Koketsu, Shinnosuke Okamura, Kotaro Miura, Hideo Kawaguchi, Shigemitsu Kasuga, Takashi Sazuka
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/d41840ee33ef444381ca8df5bf781a57
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spelling	oai:doaj.org-article:d41840ee33ef444381ca8df5bf781a572021-12-02T13:34:58ZThe dominance model for heterosis explains culm length genetics in a hybrid sorghum variety10.1038/s41598-021-84020-32045-2322https://doaj.org/article/d41840ee33ef444381ca8df5bf781a572021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-84020-3https://doaj.org/toc/2045-2322Abstract Heterosis helps increase the biomass of many crops; however, while models for its mechanisms have been proposed, it is not yet fully understood. Here, we use a QTL analysis of the progeny of a high-biomass sorghum F1 hybrid to examine heterosis. Five QTLs were identified for culm length and were explained using the dominance model. Five resultant homozygous dominant alleles were used to develop pyramided lines, which produced biomasses like the original F1 line. Cloning of one of the uncharacterised genes (Dw7a) revealed that it encoded a MYB transcription factor, that was not yet proactively used in modern breeding, suggesting that combining classic dw1or dw3, and new (dw7a) genes is an important breeding strategy. In conclusion, heterosis is explained in this situation by the dominance model and a combination of genes that balance the shortness and early flowering of the parents, to produce F1 seed yields.Shumpei HashimotoTatsuro WakeHaruki NakamuraMasaki MinamiyamaSatoko Araki-NakamuraKozue Ohmae-ShinoharaEriko KoketsuShinnosuke OkamuraKotaro MiuraHideo KawaguchiShigemitsu KasugaTakashi SazukaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Shumpei Hashimoto Tatsuro Wake Haruki Nakamura Masaki Minamiyama Satoko Araki-Nakamura Kozue Ohmae-Shinohara Eriko Koketsu Shinnosuke Okamura Kotaro Miura Hideo Kawaguchi Shigemitsu Kasuga Takashi Sazuka The dominance model for heterosis explains culm length genetics in a hybrid sorghum variety
description	Abstract Heterosis helps increase the biomass of many crops; however, while models for its mechanisms have been proposed, it is not yet fully understood. Here, we use a QTL analysis of the progeny of a high-biomass sorghum F1 hybrid to examine heterosis. Five QTLs were identified for culm length and were explained using the dominance model. Five resultant homozygous dominant alleles were used to develop pyramided lines, which produced biomasses like the original F1 line. Cloning of one of the uncharacterised genes (Dw7a) revealed that it encoded a MYB transcription factor, that was not yet proactively used in modern breeding, suggesting that combining classic dw1or dw3, and new (dw7a) genes is an important breeding strategy. In conclusion, heterosis is explained in this situation by the dominance model and a combination of genes that balance the shortness and early flowering of the parents, to produce F1 seed yields.
format	article
author	Shumpei Hashimoto Tatsuro Wake Haruki Nakamura Masaki Minamiyama Satoko Araki-Nakamura Kozue Ohmae-Shinohara Eriko Koketsu Shinnosuke Okamura Kotaro Miura Hideo Kawaguchi Shigemitsu Kasuga Takashi Sazuka
author_facet	Shumpei Hashimoto Tatsuro Wake Haruki Nakamura Masaki Minamiyama Satoko Araki-Nakamura Kozue Ohmae-Shinohara Eriko Koketsu Shinnosuke Okamura Kotaro Miura Hideo Kawaguchi Shigemitsu Kasuga Takashi Sazuka
author_sort	Shumpei Hashimoto
title	The dominance model for heterosis explains culm length genetics in a hybrid sorghum variety
title_short	The dominance model for heterosis explains culm length genetics in a hybrid sorghum variety
title_full	The dominance model for heterosis explains culm length genetics in a hybrid sorghum variety
title_fullStr	The dominance model for heterosis explains culm length genetics in a hybrid sorghum variety
title_full_unstemmed	The dominance model for heterosis explains culm length genetics in a hybrid sorghum variety
title_sort	dominance model for heterosis explains culm length genetics in a hybrid sorghum variety
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/d41840ee33ef444381ca8df5bf781a57
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The dominance model for heterosis explains culm length genetics in a hybrid sorghum variety

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