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Non-escaping frost tolerant QTL linked genetic loci at reproductive stage in six wheat DH populations

The Crop Journal 2022年第1期10卷 147-165页

作者： Jingjuan Zhang md Shahidul Islam Yun Zhao Masood Anwar Zaid Alhabbar Maoyun She Rongchang Yang Angela Juhasz Guixiang Tang Jiansheng Chen Hang Liu Yanjie Jiang Shengnan Zhai Xin Hu Junkang Rong Yingquan Zhang Yebo Qin Qier Liu Zitong Yu Yujuan Zhang Sadegh Balotf Mirza Dowla Sonia Afrin Nandita Roy md resad mallik md Atik Us Saieed Shanjida Rahman Nigarin Sultana Sarah Al-Sheikh Ahmed Chris Florides Kefei Chen Darshan Sharma Nathan Height Ben Biddulph Meiqin Lu Jorge EMayer Wujun Ma Australian-China Joint Centre for Wheat Improvement Western Australian State Agriculture Biotechnology CentreFood Futures InstituteMurdoch UniversitySouth StreetMurdochWA 6150Australia College of Agriculture&Food Zhejiang Agriculture&Forestry UniversityLin’an 311314ZhejiangChina SAGI West Faculty of Science and EngineeringCurtin UniversityBentleyWA 6102Australia Department of Primary Industries and Regional Development Western Australia3 Baron-Hay CourtSouth PerthWA 6151Australia Australian Grain Technologies 12656 Newell HighwayLocked Bag 1100NarrabriNSW 2390Australia Ag RD&IP Consult P/L NerangQLD 4211Australia

Reproductive stage frost poses a major constraint for wheat production in countries such as ***,little progress has been made in identifying key genes to overcome the *** the present study,a severe frost event hit two large-scale field trials consisting of six doubled haploid(DH)wheat populations at reproductive stage(young microspore stage)in Western Australia,leading to the identification of 30 robust frost QTL on 17 *** major 18 QTL with the phenotype variation over 9.5%were located on 13 chromosomes including 2 A,2 B,2 D,3 A,4 A,4 B,4 D,5 A,5 D,6 D,7 A,7 B and7 *** frost QTL were closely linked to the QTL of anthesis,maturity,Zadok stages as well as linked to anthesis related *** of those,six QTL were repetitively detected on the homologous regions on 2 B,4 B,4 D,5 A,5 D,7 A in more than two *** showed that the frost damage is associated with alleles of Vrn-A1 a,Vrn-D1 a,Rht-B1 b,Rht-D1 b,and the high copy number of ***,anthesis QTL and anthesis related genes of Vrn-B1 a and Ta FT3-1 B on chromosomes 5 B and 1 B did not lead to frost damage,indicating that these early-flowering phenotype related genes are compatible with frost tolerance and thus can be utilised in *** results also indicate that wild-type alleles Rht-B1 a and Rht-D1 a can be used when breeding for frost-tolerant varieties without delaying flowering time.

关键词： Anthesis-related genes Wheat DH populations Reproductive stage Non-escaping frost tolerance QTL

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