caa a22 4500 445323825 CHVBK 20180317142713.0 cr unu---uuuuu 170323e20110401xx s 000 0 eng 10.1007/s10681-010-0300-2 doi (NATIONALLICENCE)springer-10.1007/s10681-010-0300-2 Quantitative trait loci associated with seed set under high temperature stress at the flowering stage in rice ( Oryza sativa L.) [Elektronische Daten] [Yinghui Xiao, Yi Pan, Lihua Luo, Guilian Zhang, Huabing Deng, Liangying Dai, Xionglun Liu, Wenbang Tang, Liyun Chen, Guo-Liang Wang] High temperature stress (HTS), an increasingly important problem in rice production, significantly reduces rice yield by reducing seed set percentage (SSP). Breeding rice varieties with tolerance to HTS at the flowering stage is therefore essential for maintaining rice production as the climate continues to warm. In this study, two quantitative trait loci (QTL) underlying tolerance to HTS were identified using the recombinant inbred lines (RILs) derived from a cross between the HTS-tolerant rice cultivar 996 and the sensitive cultivar 4628. SSP was used as the heat-tolerance indicator for the lines, which were subjected to HTS at the flowering stage in both field and growth chamber experiments. Two major QTL that affected SSP in both conditions were detected in the interval between RM5687 and RM471 on chromosome 4, and between RM6132 and RM6100 on chromosome 10. The QTL located on chromosome 4 explained 21.3% in field and 25.8% in growth chamber of the total phenotypic variation in SSP, and increased the SSP of plants subjected to HTS by 9.1% in field and by 9.3% in growth chamber. The second QTL located on chromosome 10 explained 11.5% in field and 11.6% in growth chamber of the total phenotypic variation in SSP, and increased the SSP of plants subjected to HTS by 7.2% in field and 7.0% in growth chamber. The positive additive effects of the two QTL were derived from the 996 alleles. The two major QTL identified in this study could be useful for further fine mapping and cloning of these genes and for molecular marker-aided breeding of heat-tolerant rice cultivars. Springer Science+Business Media B.V., 2010 Rice nationallicence Quantitative trait loci nationallicence Seed set nationallicence High temperature stress nationallicence Flowering nationallicence Xiao Yinghui Hunan Agricultural University, 410128, Changsha, China aut Pan Yi Hunan Agricultural University, 410128, Changsha, China aut Luo Lihua Hunan Agricultural University, 410128, Changsha, China aut Zhang Guilian Hunan Agricultural University, 410128, Changsha, China aut Deng Huabing Hunan Agricultural University, 410128, Changsha, China aut Dai Liangying Hunan Agricultural University, 410128, Changsha, China aut Liu Xionglun Hunan Agricultural University, 410128, Changsha, China aut Tang Wenbang Hunan Agricultural University, 410128, Changsha, China aut Chen Liyun Hunan Agricultural University, 410128, Changsha, China aut Wang Guo-Liang Hunan Agricultural University, 410128, Changsha, China aut Euphytica Springer Netherlands 178/3(2011-04-01), 331-338 0014-2336 178:3<331 2011 178 10681 https://doi.org/10.1007/s10681-010-0300-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10681-010-0300-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Xiao Yinghui Hunan Agricultural University, 410128, Changsha, China aut NATIONALLICENCE 700 1- Pan Yi Hunan Agricultural University, 410128, Changsha, China aut NATIONALLICENCE 700 1- Luo Lihua Hunan Agricultural University, 410128, Changsha, China aut NATIONALLICENCE 700 1- Zhang Guilian Hunan Agricultural University, 410128, Changsha, China aut NATIONALLICENCE 700 1- Deng Huabing Hunan Agricultural University, 410128, Changsha, China aut NATIONALLICENCE 700 1- Dai Liangying Hunan Agricultural University, 410128, Changsha, China aut NATIONALLICENCE 700 1- Liu Xionglun Hunan Agricultural University, 410128, Changsha, China aut NATIONALLICENCE 700 1- Tang Wenbang Hunan Agricultural University, 410128, Changsha, China aut NATIONALLICENCE 700 1- Chen Liyun Hunan Agricultural University, 410128, Changsha, China aut NATIONALLICENCE 700 1- Wang Guo-Liang Hunan Agricultural University, 410128, Changsha, China aut NATIONALLICENCE 773 0- Euphytica Springer Netherlands 178/3(2011-04-01), 331-338 0014-2336 178:3<331 2011 178 10681 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer