caa a22 4500 44532323X CHVBK 20180317142711.0 cr unu---uuuuu 170323e20110501xx s 000 0 eng 10.1007/s10681-011-0377-2 doi (NATIONALLICENCE)springer-10.1007/s10681-011-0377-2 Improving cooking and eating quality of Xieyou57, an elite indica hybrid rice, by marker-assisted selection of the Wx locus [Elektronische Daten] [Dahu Ni, Shilu Zhang, Sheng Chen, Yong Xu, Li Li, Hao Li, Zongyang Wang, Xiuling Cai, Zefu Li, Jianbo Yang] Xieyou 57, an elite hybrid rice with high grain yield and broad eco-adaptability, is widely planted in China. Its cooking and eating quality, however, is unsatisfactory due to high-amylose content (AC). In this research, a molecular marker-assisted selection method was used to breed for low-amylose content through the modification of the Wx genes in both parents of Xieyou 57. The quality of the parent and hybrid lines were then compared before and after modification. Amylose content of GT-type hybrids derived from crosses of Xieqingzao A(GG)×057(TT) or Xieqingzao A(TT)×057(GG), was reduced to about 19% from about 26% in the original hybrid Xieqingzao A(GG)×057(GG). Wide variation in amylose contents, however, was observed in these GT-type hybrids. With further improvements in both parental lines, the TT type hybrid of Xieqingzao A(TT)×057(TT) contained even lower amylose (12.5%) with good uniformity and exhibited much better cooking and eating quality than the original hybrid of Xieqingzao A(GG)×057(GG). Meanwhile, yield potential was also improved by increasing panicle size and grain number of the male sterile line. These results demonstrated the success in significantly improving the cooking and eating quality of hybrid rice while maintaining the good agronomical attributes of the parent lines by using molecular marker-assisted breeding in combination with conventional agronomical selection. The Author(s), 2011 Hybrid rice nationallicence Quality nationallicence Amylose content nationallicence Marker-assisted selection nationallicence Granule-bound starch synthase nationallicence Rapid viscosity analysis nationallicence Ni Dahu Institute of Plasma Physics, Chinese Academy of Sciences, 230031, Hefei, China aut Zhang Shilu Key Laboratory of Rice Genetics Breeding of Anhui Province/Rice Research Institute, Anhui Academy of Agricultural Sciences, 230031, Hefei, China aut Chen Sheng Key Laboratory of Rice Genetics Breeding of Anhui Province/Rice Research Institute, Anhui Academy of Agricultural Sciences, 230031, Hefei, China aut Xu Yong Key Laboratory of Rice Genetics Breeding of Anhui Province/Rice Research Institute, Anhui Academy of Agricultural Sciences, 230031, Hefei, China aut Li Li Key Laboratory of Rice Genetics Breeding of Anhui Province/Rice Research Institute, Anhui Academy of Agricultural Sciences, 230031, Hefei, China aut Li Hao Institute of Plasma Physics, Chinese Academy of Sciences, 230031, Hefei, China aut Wang Zongyang Institute of Plant Physiology and Ecology Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 200032, Shanghai, China aut Cai Xiuling Institute of Plant Physiology and Ecology Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 200032, Shanghai, China aut Li Zefu Key Laboratory of Rice Genetics Breeding of Anhui Province/Rice Research Institute, Anhui Academy of Agricultural Sciences, 230031, Hefei, China aut Yang Jianbo Key Laboratory of Rice Genetics Breeding of Anhui Province/Rice Research Institute, Anhui Academy of Agricultural Sciences, 230031, Hefei, China aut Euphytica Springer Netherlands 179/2(2011-05-01), 355-362 0014-2336 179:2<355 2011 179 10681 https://doi.org/10.1007/s10681-011-0377-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10681-011-0377-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ni Dahu Institute of Plasma Physics, Chinese Academy of Sciences, 230031, Hefei, China aut NATIONALLICENCE 700 1- Zhang Shilu Key Laboratory of Rice Genetics Breeding of Anhui Province/Rice Research Institute, Anhui Academy of Agricultural Sciences, 230031, Hefei, China aut NATIONALLICENCE 700 1- Chen Sheng Key Laboratory of Rice Genetics Breeding of Anhui Province/Rice Research Institute, Anhui Academy of Agricultural Sciences, 230031, Hefei, China aut NATIONALLICENCE 700 1- Xu Yong Key Laboratory of Rice Genetics Breeding of Anhui Province/Rice Research Institute, Anhui Academy of Agricultural Sciences, 230031, Hefei, China aut NATIONALLICENCE 700 1- Li Li Key Laboratory of Rice Genetics Breeding of Anhui Province/Rice Research Institute, Anhui Academy of Agricultural Sciences, 230031, Hefei, China aut NATIONALLICENCE 700 1- Li Hao Institute of Plasma Physics, Chinese Academy of Sciences, 230031, Hefei, China aut NATIONALLICENCE 700 1- Wang Zongyang Institute of Plant Physiology and Ecology Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 200032, Shanghai, China aut NATIONALLICENCE 700 1- Cai Xiuling Institute of Plant Physiology and Ecology Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 200032, Shanghai, China aut NATIONALLICENCE 700 1- Li Zefu Key Laboratory of Rice Genetics Breeding of Anhui Province/Rice Research Institute, Anhui Academy of Agricultural Sciences, 230031, Hefei, China aut NATIONALLICENCE 700 1- Yang Jianbo Key Laboratory of Rice Genetics Breeding of Anhui Province/Rice Research Institute, Anhui Academy of Agricultural Sciences, 230031, Hefei, China aut NATIONALLICENCE 773 0- Euphytica Springer Netherlands 179/2(2011-05-01), 355-362 0014-2336 179:2<355 2011 179 10681 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer