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| 1 | Dissection of heterosis for yield and related traits using populations derived from introgression lines in rice显示文摘Despite the great success achieved by the exploitation of heterosis in rice,the genetic basis of heterosis is still not well understood.We adopted an advanced-backcross breeding strategy to dissect the genetic basis of heterosis for yield and eight related traits.Four testcross(TC) populations with 228 testcross F1 combinations were developed by crossing57 introgression lines with four types of widely used male sterile lines using a North Carolina II mating design.Analysis of variance indicated that the effects of testcross F1 combinations and their parents were significant or highly significant for most of the traits in both years,and all interaction effects with year were significant for most of the traits.Positive midparent heterosis(HMP) was observed for most traits in the four TC populations in the two years.The relative HMPlevels for most traits varied from highly negative to highly positive.Sixty-two dominant-effect QTL were identified for HMPof the nine traits in the four TC populations in the two years.Of these,22 QTL were also identified for the performance of testcross F1.Most dominant-effect QTL could individually explain more than 10% of the phenotypic variation.Four QTL clusters were observed including the region surrounding the RM9–RM297 region on chromosome 1,the RM110–RM279–RM8–RM5699–RM452 region on chromosome 2,the RM5463 locus on chromosome 6 and the RM1146–RM147 region on chromosome 10.The identified QTL for heterosis provide valuable information for dissecting the genetic basis of heterosis. | Chao Xiang Hongjun Zhang Hui Wang Shaobo Wei Binying Fu Jiafa Xia Zefu Li Yongming Gao Guoyou Ye | 2016 | The Crop Journal2016，4，6： | 3 |
| 2 | Simultaneous improvement and genetic dissection of grain yield and its related traits in a backbone parent of hybrid rice ( Oryza sativa L.) using selective introgression显示文摘 | Hongjun Zhang Hui Wang Yiliang Qian Jiafa Xia Zefu Li Yingyao Shi Linghua Zhu Jauhar Ali Yongming Gao Zhikang Li | 2013 | Molecular Breeding2013，，1： | 1 |
| 3 | Prevalence of pneumoconiosis in Hubei,China from 2008 to 2013 显示文摘 | Xia Ying Liu Jiafa Shi Yingming | 2014 | International journal of environmental research and public health2014，11，9： | 1 |
| 4 | Genetic variation in ZmSO contributes to ABA response and drought tolerance in maize seedlings显示文摘Water scarcity impairs maize growth and yield.Identification and deployment of superior droughttolerance alleles is desirable for the genetic improvement of stress tolerance in maize.Our previous study revealed that maize sulfite oxidase(SO) catalyzes the oxidation of sulfite to sulfate and may be involved in drought response.But it was unclear whether the natural variation in Zm SO is directly associated with the drought resistance of maize.In the present study,we showed that Zm SO was associated with drought tolerance in maize seedlings,using gene association analysis and a transgene approach.A 14-bp insertion variation,containing two ABA-responsive elements,in the promoter region of Zm SO conferred ABAinducible expression,leading to increased drought tolerance.Genetic selection of this favorable allele increased drought tolerance.This study has identified elite alleles associated with sulfur metabolism for improving maize drought resistance. | Zongliang Xia Fangfang Liu Meiping Wang Jiafa Chen Zijian Zhou Jianyu Wu | 2023 | The Crop Journal2023，11，4： | 0 |
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