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Dagang Wang Lei Zhang Jiekun Li Guoyu Hu Qian Wu Haiyan Jiang Zhiping Huang 《Plant Breeding》2016,135(3):342-348
Over the past decade, M‐type cytoplasmic male sterility (CMS) line W931A and a variety of restorer lines have been exploited for the release of hybrid seeds in soybean (Glycine max). However, the identities of restorer genes in the nuclei of soybean restorer lines are still unclear. In this study, we analysed the inheritance pattern of restorer locus Rf‐m from restorer line WR016 and constructed a high‐resolution map of this locus. Results showed that Rf‐m in WR016 is a monogenic dominant gene located within a 162.4‐kb region on chromosome 16, which is flanked on each side by new developed simple sequence repeat (SSR) markers GmSSR1602 and GmSSR1610 at a distance of 0.11 and 0.25 cM, respectively. Nineteen open reading frames (ORFs) were predicted in this region. Of these, seven genes arranged in tandem on chromosome 16 encode pentatricopeptide repeat (PPR) proteins, which is similar to other reported restorer loci in plants. These results lay a solid foundation for map‐based cloning of the Rf‐m gene and will be helpful for marker‐assisted selection of elite CMS restorer lines. 相似文献
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Laura Vanesa Gómez Ros José M. Espiñeira Federico Pomar Fuencisla Merino Juan Cuello Alfonso Ros Barceló 《Journal of Wood Science》2007,53(4):314-319
Lignins are cell wall phenolic heteropolymers that result from the oxidative coupling of three monolignols bearing p-coumaryl (H), coniferyl (G), and sinapyl (S) units, in a reaction mediated by peroxidases. Here, we report the existence
of a relationship between the Σβ-O-4/ΣO-4 end monomer ratio of the linear lignin fraction, released through the specific cleavage of the alkyl ether linkages by
thioacidolysis, and the G/S ratio of lignins, when this was estimated in differentially evolved vascular land plants. Most
importantly, in the case of angiosperms, Gnetales, and lycopods, the Σβ-O-4/ΣO-4 end monomer ratio was apparently predictable from the proportions at which the G and S units were mixed. In the case of
G lignins (present in basal gymnosperms and ferns), the Σβ-O-4/ΣO-4 end monomer ratio decayed exponentially to increase the O-4-linked dihydroconiferyl alcohol (DHCA) content. The results obtained suggest that the Σβ-O-4/ΣO-4 end monomer ratio of the linear lignin fraction depends intimately on the lignin monomer composition, and, therefore, on
the chemical nature of the radicals derived from three monolignols (coniferyl, dihydroconiferyl, and sinapyl alcohols), whose
gain have been finely tuned during land plant evolution. 相似文献
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烟草野火病药剂防治研究 总被引:9,自引:4,他引:5
经过二年的室内药剂筛选、田间小区试验和生产基点试验,选出了药效优于链霉素和DT的药剂细菌清931,平均防效在77.5%-92.99%,为烟草野火病的防治提供了一种新药剂。 相似文献
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番茄新品种扬粉931的选育 总被引:1,自引:0,他引:1
扬粉 931的母本是由美国品种OregonSpring和从北京引进的早霞杂交后代经多代单株选择出的优良株系 88 6 5 9 4,父本是从美国引进的PGY90 91多代自交后代与江苏的矮黄粉杂交后定向选育的优良株系 88 1 1 1 2 1。该一代杂种适于保护地早熟栽培 ,抗TMV ,中抗CMV。植株为有限生长类型 ,低温下单性结实 ,果实粉红色 ,可溶性固形物 4 .5%以上 ,品质优良。早熟高产 ,每6 6 7m2 产量 4 0 0 0kg左右 ,已在江苏地区推广种植 2 0 0hm2 。 相似文献
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