QTL for sensitivity of seedling height to exogenous GA3 and their effects on adult plant height in common wheat

N. Zhang; R.Q. Pan; J.J. Liu; X.L. Zhang; Q.N. Su; F. Cui; C.H. Zhao; L.Q. Song; J. Ji; J.M. Li

doi:10.1556/0806.46.2018.021

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Cereal Research Communications

Volume/Issue:: Volume 46: Issue 3

QTL for sensitivity of seedling height to exogenous GA₃ and their effects on adult plant height in common wheat

Authors:

N. Zhang

N. Zhang Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang 050022, China

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R.Q. Pan

R.Q. Pan Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang 050022, China
University of Chinese Academy of Sciences, Beijing 10049, China

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J.J. Liu

J.J. Liu Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang 050022, China
University of Chinese Academy of Sciences, Beijing 10049, China

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X.L. Zhang

X.L. Zhang Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang 050022, China
University of Chinese Academy of Sciences, Beijing 10049, China

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Q.N. Su

Q.N. Su Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang 050022, China
University of Chinese Academy of Sciences, Beijing 10049, China

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F. Cui

F. Cui College of Agriculture, Ludong University, Yan’tai, 264025, China

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C.H. Zhao

C.H. Zhao College of Agriculture, Ludong University, Yan’tai, 264025, China

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L.Q. Song

L.Q. Song Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang 050022, China

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J. Ji

J. Ji Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang 050022, China

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J.M. Li

J.M. Li Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang 050022, China

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Pages:: 412–423

Online Publication Date:: Sep 2018

Publication Date:: 01 Sep 2018

Article Category:: Research Article

DOI:: https://doi.org/10.1556/0806.46.2018.021

Keywords:: quantitative trait loci (QTL); gibberellin sensitivity; coleoptile; plant height; common wheat

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Plants with deficiency in Gibberellins (GAs) biosynthesis pathway are sensitive to exogenous GA₃, while those with deficiency in GAs signaling pathway are insensitive to exogenous GA₃. Thus, exogenous GA₃ test is often used to verify whether the reduced height (Rht) gene is involved in GAs biosynthesis or signaling pathway. In the present study, we identified the genetic factors responsive to exogenous GA₃ at the seedling stage of common wheat and analyzed the response of the plant height related quantitative trait loci (QTL) to GA₃ to understand the GAs pathways the Rht participated in. Recombinant inbred lines derived from a cross between KN9204 and J411 with different response to exogenous GA3 were used to screen QTL for the sensitivity of coleoptile length (SCL) and the sensitivity of seedling plant height (SSPH) to exogenous GA₃. Two additive QTL and two pairs of epistatic QTL for SCL were identified, meanwhile, two additive QTL and three pairs of epistatic QTL for SSPH were detected. For the adult plant height (PH) investigated in two environments, six additive QTL were identified. Three QTL qScl-4B, qSsph-4B and qPh-4B were mapped in one cluster near the functional marker Rht-B1b. When PH were conditional on SSPH, the absolute additive effect value of qPh-4B and qPh-6B were reduced, suggesting that the Rhts in both two QTL were insensitive to exogenous GA₃, while the additive effect values of qPh-2B, qPh-3A, qPh-3D and qPh-5A were not significantly changed, indicating that the Rhts in these QTL were sensitive to exogenous GA₃, or they were not expressed at the seedling stage.

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Cereal Research Communications A Quarterly of the Cereal Research Non-Profit Ltd. Company

Print ISSN:: 0133-3720

Online ISSN:: 1788-9170

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Cereal Research Communications
Language	English
Size	A4
Year of Foundation	1973
Volumes per Year	1
Issues per Year	4
Founder	Akadémiai Kiadó
Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245
Publisher	Akadémiai Kiadó Springer Nature Switzerland AG
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	0133-3720 (Print)
ISSN	1788-9170 (Online)