<i>Hd1</i> Allele Types and Their Associations with Major Agronomic Traits in Korean Rice Cultivars

Optimizing flowering time in crop plants is critical for maximizing yield and quality under target environments. While there is a wide range of heading date variation in Korean rice cultivars, the underlying gene mechanisms are unclear. Here, we sequenced the protein coding regions of <i>Hd1&l...

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Autores principales:	Youngjun Mo, Chang-Min Lee, Hyang-Mi Park, Su-Kyung Ha, Mi-Jung Kim, Jieun Kwak, Hyun-Sook Lee, Jeong-Heui Lee, Ji-Ung Jeung
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	rice <i>Hd1</i> days to heading culm length amylose content protein content Botany QK1-989
Acceso en línea:	https://doaj.org/article/c86eded4253b432b8af0b20f9085d184
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id	oai:doaj.org-article:c86eded4253b432b8af0b20f9085d184
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spelling	oai:doaj.org-article:c86eded4253b432b8af0b20f9085d1842021-11-25T18:46:21Z<i>Hd1</i> Allele Types and Their Associations with Major Agronomic Traits in Korean Rice Cultivars10.3390/plants101124082223-7747https://doaj.org/article/c86eded4253b432b8af0b20f9085d1842021-11-01T00:00:00Zhttps://www.mdpi.com/2223-7747/10/11/2408https://doaj.org/toc/2223-7747Optimizing flowering time in crop plants is critical for maximizing yield and quality under target environments. While there is a wide range of heading date variation in Korean rice cultivars, the underlying gene mechanisms are unclear. Here, we sequenced the protein coding regions of <i>Hd1</i>, the major rice heading date gene, from 293 Korean rice cultivars and investigated the associations between <i>Hd1</i> allele types and major agronomic traits under four different environments. There were four functional <i>Hd1</i> and five nonfunctional <i>hd1</i> alleles distributed among the 293 Korean rice cultivars. The effects of the <i>Hd1</i> allele types were highly significant for days to heading in all four environments, explaining 51.4–65.8% of the phenotypic variation. On average, cultivars carrying nonfunctional <i>hd1</i> headed 13.7 days earlier than those carrying functional <i>Hd1</i>. While the <i>Hd1</i> allele types exhibited highly significant effects on culm length and protein content under all four environments, the differences between cultivars carrying <i>Hd1</i> and <i>hd1</i> were minimal. The effects of the <i>Hd1</i> allele types on amylose content were significant in only one of the four environments. Our results provide useful information for fine-tuning rice heading dates by utilizing different <i>Hd1</i> alleles in rice breeding programs.Youngjun MoChang-Min LeeHyang-Mi ParkSu-Kyung HaMi-Jung KimJieun KwakHyun-Sook LeeJeong-Heui LeeJi-Ung JeungMDPI AGarticlerice<i>Hd1</i>days to headingculm lengthamylose contentprotein contentBotanyQK1-989ENPlants, Vol 10, Iss 2408, p 2408 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	rice <i>Hd1</i> days to heading culm length amylose content protein content Botany QK1-989
spellingShingle	rice <i>Hd1</i> days to heading culm length amylose content protein content Botany QK1-989 Youngjun Mo Chang-Min Lee Hyang-Mi Park Su-Kyung Ha Mi-Jung Kim Jieun Kwak Hyun-Sook Lee Jeong-Heui Lee Ji-Ung Jeung <i>Hd1</i> Allele Types and Their Associations with Major Agronomic Traits in Korean Rice Cultivars
description	Optimizing flowering time in crop plants is critical for maximizing yield and quality under target environments. While there is a wide range of heading date variation in Korean rice cultivars, the underlying gene mechanisms are unclear. Here, we sequenced the protein coding regions of <i>Hd1</i>, the major rice heading date gene, from 293 Korean rice cultivars and investigated the associations between <i>Hd1</i> allele types and major agronomic traits under four different environments. There were four functional <i>Hd1</i> and five nonfunctional <i>hd1</i> alleles distributed among the 293 Korean rice cultivars. The effects of the <i>Hd1</i> allele types were highly significant for days to heading in all four environments, explaining 51.4–65.8% of the phenotypic variation. On average, cultivars carrying nonfunctional <i>hd1</i> headed 13.7 days earlier than those carrying functional <i>Hd1</i>. While the <i>Hd1</i> allele types exhibited highly significant effects on culm length and protein content under all four environments, the differences between cultivars carrying <i>Hd1</i> and <i>hd1</i> were minimal. The effects of the <i>Hd1</i> allele types on amylose content were significant in only one of the four environments. Our results provide useful information for fine-tuning rice heading dates by utilizing different <i>Hd1</i> alleles in rice breeding programs.
format	article
author	Youngjun Mo Chang-Min Lee Hyang-Mi Park Su-Kyung Ha Mi-Jung Kim Jieun Kwak Hyun-Sook Lee Jeong-Heui Lee Ji-Ung Jeung
author_facet	Youngjun Mo Chang-Min Lee Hyang-Mi Park Su-Kyung Ha Mi-Jung Kim Jieun Kwak Hyun-Sook Lee Jeong-Heui Lee Ji-Ung Jeung
author_sort	Youngjun Mo
title	<i>Hd1</i> Allele Types and Their Associations with Major Agronomic Traits in Korean Rice Cultivars
title_short	<i>Hd1</i> Allele Types and Their Associations with Major Agronomic Traits in Korean Rice Cultivars
title_full	<i>Hd1</i> Allele Types and Their Associations with Major Agronomic Traits in Korean Rice Cultivars
title_fullStr	<i>Hd1</i> Allele Types and Their Associations with Major Agronomic Traits in Korean Rice Cultivars
title_full_unstemmed	<i>Hd1</i> Allele Types and Their Associations with Major Agronomic Traits in Korean Rice Cultivars
title_sort	<i>hd1</i> allele types and their associations with major agronomic traits in korean rice cultivars
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/c86eded4253b432b8af0b20f9085d184
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<i>Hd1</i> Allele Types and Their Associations with Major Agronomic Traits in Korean Rice Cultivars

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