Genetical and morphological characterization of cold tolerance at fertilization stage in rice

Cold temperature during the reproductive phase leads to seed sterility, which reduces yield and decreases the grain quality of rice. The fertilization stage, ranging from pollen maturation to the completion of fertilization, is sensitive to unsuitable temperature. Improving cold tolerance at the fer...

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Main Authors:	Shinada, Hiroshi, Iwata, Natsuko, Sato, Takashi, Fujino, Kenji
Format:	Online
Language:	English
Published:	Japanese Society of Breeding 2013
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3688381/

id	pubmed-3688381
recordtype	oai_dc
spelling	pubmed-36883812013-07-12 Genetical and morphological characterization of cold tolerance at fertilization stage in rice Shinada, Hiroshi Iwata, Natsuko Sato, Takashi Fujino, Kenji Research Papers Cold temperature during the reproductive phase leads to seed sterility, which reduces yield and decreases the grain quality of rice. The fertilization stage, ranging from pollen maturation to the completion of fertilization, is sensitive to unsuitable temperature. Improving cold tolerance at the fertilization stage (CTF) is an important objective of rice breeding program in cold temperature areas. In this study, we characterized fertilization behavior under cold temperature to define the phenotype of CTF and identified quantitative trait loci (QTLs) for CTF. A wide variation in CTF levels has been identified among local cultivars in Hokkaido, which is one of the most northern regions for rice cultivation in the world. Clear varietal differences in pollen germination, and pollen tube elongation due to cold temperature have been observed. These differences may confer a degree of CTF among this population. We conducted QTL analysis for CTF using 120 backcrossed inbred lines derived from a cross between Eikei88223 (vigorous CTF) and Suisei (very weak CTF). Three QTLs for CTF were identified. A clear effect by QTL, qCTF7, for increasing the level of CTF was validated using advanced progeny. These results will facilitate marker-assist selection for desirable QTLs for CTF in rice breeding program. Japanese Society of Breeding 2013-06-01 2013-06 /pmc/articles/PMC3688381/ /pubmed/23853514 http://dx.doi.org/10.1270/jsbbs.63.197 Text en Copyright © 2013 by JAPANESE SOCIETY OF BREEDING http://creativecommons.org/licenses/by-nc-nd/3.0 This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Shinada, Hiroshi Iwata, Natsuko Sato, Takashi Fujino, Kenji
spellingShingle	Shinada, Hiroshi Iwata, Natsuko Sato, Takashi Fujino, Kenji Genetical and morphological characterization of cold tolerance at fertilization stage in rice
author_facet	Shinada, Hiroshi Iwata, Natsuko Sato, Takashi Fujino, Kenji
author_sort	Shinada, Hiroshi
title	Genetical and morphological characterization of cold tolerance at fertilization stage in rice
title_short	Genetical and morphological characterization of cold tolerance at fertilization stage in rice
title_full	Genetical and morphological characterization of cold tolerance at fertilization stage in rice
title_fullStr	Genetical and morphological characterization of cold tolerance at fertilization stage in rice
title_full_unstemmed	Genetical and morphological characterization of cold tolerance at fertilization stage in rice
title_sort	genetical and morphological characterization of cold tolerance at fertilization stage in rice
description	Cold temperature during the reproductive phase leads to seed sterility, which reduces yield and decreases the grain quality of rice. The fertilization stage, ranging from pollen maturation to the completion of fertilization, is sensitive to unsuitable temperature. Improving cold tolerance at the fertilization stage (CTF) is an important objective of rice breeding program in cold temperature areas. In this study, we characterized fertilization behavior under cold temperature to define the phenotype of CTF and identified quantitative trait loci (QTLs) for CTF. A wide variation in CTF levels has been identified among local cultivars in Hokkaido, which is one of the most northern regions for rice cultivation in the world. Clear varietal differences in pollen germination, and pollen tube elongation due to cold temperature have been observed. These differences may confer a degree of CTF among this population. We conducted QTL analysis for CTF using 120 backcrossed inbred lines derived from a cross between Eikei88223 (vigorous CTF) and Suisei (very weak CTF). Three QTLs for CTF were identified. A clear effect by QTL, qCTF7, for increasing the level of CTF was validated using advanced progeny. These results will facilitate marker-assist selection for desirable QTLs for CTF in rice breeding program.
publisher	Japanese Society of Breeding
publishDate	2013
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3688381/
_version_	1611988190293393408

Genetical and morphological characterization of cold tolerance at fertilization stage in rice

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