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| 1 | Mapping of QTLs for Germination Characteristics under Non-stress and Drought Stress in Rice显示文摘Identification of genetic factors controlling traits associated with seed germination under drought stress conditions, leads to identification and development of drought tolerant varieties. Present study by using a population of F2:4 derived from a cross between a drought tolerant variety, Gharib(indica) and a drought sensitive variety, Sepidroud(indica), is to identify and compare QTLs associated with germination traits under drought stress and non-stress conditions. Through QTL analysis, using composite interval mapping, regarding traits such as germination rate(GR), germination percentage(GP), radicle length(RL), plumule length(PL), coleorhiza length(COL) and coleoptile length(CL), totally 13 QTLs were detected under pole drought stress(-8 MPa poly ethylene glycol 6000) and 9 QTLs under non-stress conditions. Of the QTLs identified under non-stress conditions, QTLs associated with COL(qCOL-5) and GR(qGR-1) explained 21.28% and 19.73% of the total phenotypic variations, respectively. Under drought stress conditions, QTLs associated with COL(qCOL-3) and PL(qPL-5) explained 18.34% and 18.22% of the total phenotypic variations, respectively. A few drought-tolerance-related QTLs identified in previous studies are near the QTLs detected in this study, and several QTLs in this study are novel alleles. The major QTLs like qGR-1, qGP-4, qRL-12 and qCL-4 identified in both conditions for traits GR, GP, RL and CL, respectively, should be considered as the important and stable trait-controlling QTLs in rice seed germination. Those major or minor QTLs could be used to significantly improve drought tolerance by marker-assisted selection in rice. | Zahra MARDANI Babak RABIEI Hossein SABOURI Atefeh SABOURI | 2013 | Rice science2013，20，6： | 1 |
| 2 | 陆稻的起源与适应性进化研究进展显示文摘陆稻是栽培稻最重要的生态型之一,在长期适应旱作农业生境的过程中,具有节水抗旱、养分高效、耐直播等诸多绿色性状,是“绿色超级稻”与“节水抗旱稻”研发中的重要种质资源。近年来,陆稻起源与其抗旱性为主的适应性进化的问题逐步受到重视,先后有许多学者采取不同方法、从不同角度研究了陆稻与水稻的适应性分化,并初步揭示了陆稻及其基因资源起源与进化的遗传机制,为科学利用陆稻绿色基因资源发展节水抗旱稻提供了理论依据。该文综述了近30年来陆稻抗旱性起源与进化的研究进展,阐述陆稻起源与进化中的各种观点,并对未来陆稻绿色遗传资源的研究和应用提出展望。 | 罗志 周衡陵 李静 李朝阳 王磊 罗利军 夏辉 | 2022 | 上海农业学报2022，38，4： | 1 |
| 3 | 水稻短胚芽鞘基因SCP1的图位克隆显示文摘水稻胚芽鞘在幼苗出土过程中发挥重要作用,其生长受到多种激素的调控。为了挖掘胚芽鞘生长的关键调控因子,对水稻突变体库进行筛选,获得了一系列胚芽鞘发育缺陷突变体。其中一个突变体(short coleoptile 1,scp1)的胚芽鞘明显短于野生型,且乙烯合成基因表达水平和乙烯释放量均低于野生型,其幼苗的耐盐性和耐旱性显著提高。成株期的scp1突变体表现出矮化、小粒的表型。通过图位克隆,将SCP1基因定位在5号染色体上32.01 kb区间,该区间有5个功能基因,通过扩增与测序发现OsRGA1基因在突变体中有大片段缺失,并且与已报道的osrga1等位突变体d1具有相似的胚芽鞘表型和农艺性状,说明scp1是osrga1的另一个等位突变体。相关研究结果加深了对OsRGA1基因功能的认识,为探究乙烯调控水稻生长发育及耐逆性的分子机理提供了研究材料。 | 王芳芳 李宇翔 梁宇航 黄荣峰 张玉琼 秦华 | 2020 | 中国农业科技导报2020，22，11： | 0 |
| 4 | 水稻抗旱性的遗传研究显示文摘干旱是影响水稻产量的主要非生物限制因素之一。本研究阐述了水稻抗旱性及相关性状的遗传,以及抗旱性育种,为抗旱水稻品种的选育提供理论依据。 | 刘金波 李建红 迟铭 徐波 孙志广 杨波 李健 刘艳 卢百关 王宝祥 徐大勇 | 2018 | 农业科技通讯2018，，11： | 0 |
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