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  1. Article: Effects of altitude and cytoplasm factors on genotype frequency of rice segregated populations at rf-1 locus

    Zhang yun, Yunnan Agricultural University, Kunming(China), Rice Research Institute / Tan Xuelin, Yunnan Agricultural University, Kunming(China), Rice Research Institute / Tan Yaling, Yunnan Agricultural University, Kunming(China), Rice Research Institute

    Molecular Plant Breeding

    May. 2010  , Issue (3)

    Abstract: 水稻的演化及水稻细胞质雄性不育育性恢复基因的种质分布与地理分布关系密切。Rf-1是水稻克隆唯一的育性恢复基因。为研究海拔和籼粳细胞质因素对水稻分离群体的Rf-1位点基因型频率的效应,本研究用两个云南高海拔地方粳稻品种与具籼稻细胞质和恢复基因的偏粳品系南34正反交,在4个海拔点种植F1与育性稳定的不育系测交获得测交群体,并自交产生F2群体;同时在室内将经17℃和14℃温度处理正处于开花期的F1稻穗与不育系授粉获得测交群体。然后对分离群体用位于Rf-1位点的PCR标记M45461进行基因型频率分析。结果显示： ...

    Abstract 水稻的演化及水稻细胞质雄性不育育性恢复基因的种质分布与地理分布关系密切。Rf-1是水稻克隆唯一的育性恢复基因。为研究海拔和籼粳细胞质因素对水稻分离群体的Rf-1位点基因型频率的效应,本研究用两个云南高海拔地方粳稻品种与具籼稻细胞质和恢复基因的偏粳品系南34正反交,在4个海拔点种植F1与育性稳定的不育系测交获得测交群体,并自交产生F2群体;同时在室内将经17℃和14℃温度处理正处于开花期的F1稻穗与不育系授粉获得测交群体。然后对分离群体用位于Rf-1位点的PCR标记M45461进行基因型频率分析。结果显示：在总的25分离群体中,有11个具有由南34提供籼稻细胞质,14具有由云南高海拔粳稻提供的粳稻细胞质;在所有分离群体中,14个发生遗传偏分离。在14个以粳稻细胞质为背景分离群体中仅有4个发生遗传偏分离,但在11个具有由南34提供的籼稻细胞质背景的分离群体中有10个发生遗传偏离,而且都偏向南34,偏向南34基因型的频率基本是随海拔的升高而增加。结果说明海拔、温度和细胞质背景均对分离群体Rf-1位点的基因型频率具有影响,而且达到显著或极显著水平;细胞质背景对雄配子在Rf-1位点的基因型具极大的选择效应。本研究可为探讨水稻恢复基因与水稻生态适应性的关系及恢复基因与水稻的分化关系提供理论参考。[著者文摘]
    Keywords RICE ; GENOTYPES ; CYTOPLASM ; RIZ ; GENOTYPE ; CYTOPLASME ; ARROZ ; GENOTIPOS ; CITOPLASMA ; http://www.fao.org/aos/agrovoc#c_6599 ; http://www.fao.org/aos/agrovoc#c_3225 ; http://www.fao.org/aos/agrovoc#c_2093
    Language zho
    Document type Article
    ISSN 1672-416X
    Database AGRIS - International Information System for the Agricultural Sciences and Technology

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  2. Article: Molecular marker-assisted selection of japonica rice restorer line for yinshui type CMS

    Wang Xianju, Yunnan Agricultural University, Kunming(China), Rice Research Institute / Tan Xuelin, Yunnan Agricultural University, Kunming(China), Rice Research Institute / Shao Guojun, Rice Research Institute of Liaoning Province, Shenyang(China)

    Molecular Plant Breeding

    Mar. 2010  , Issue (2)

    Abstract: 本文以广亲和材料晚轮422,野败型恢复系蜀恢527、密阳46、密阳42为亲本,在杂交组合的F2、F4中,采用分子标记RM10353、RM6100辅助选择,结合常规育种方法,选育印水型细胞质雄性不育粳稻恢复系。研究表明,经过分子标记检测,同时含有两个恢复基因的水稻植株,测配子一代的结实率明显提高、杂种优势显著。结果表明基于分子标记辅助选育印水型恢复系是可行的。[著者文摘] ...

    Abstract 本文以广亲和材料晚轮422,野败型恢复系蜀恢527、密阳46、密阳42为亲本,在杂交组合的F2、F4中,采用分子标记RM10353、RM6100辅助选择,结合常规育种方法,选育印水型细胞质雄性不育粳稻恢复系。研究表明,经过分子标记检测,同时含有两个恢复基因的水稻植株,测配子一代的结实率明显提高、杂种优势显著。结果表明基于分子标记辅助选育印水型恢复系是可行的。[著者文摘]
    Keywords RICE ; SELECTION ; GENETIC MARKERS ; RIZ ; SELECTION ; MARQUEUR GENETIQUE ; ARROZ ; SELECCION ; MARCADORES GENETICOS ; http://www.fao.org/aos/agrovoc#c_6599 ; http://www.fao.org/aos/agrovoc#c_6951 ; http://www.fao.org/aos/agrovoc#c_24030
    Language zho
    Document type Article
    ISSN 1672-416X
    Database AGRIS - International Information System for the Agricultural Sciences and Technology

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    Kategorien

    Order via subito

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  3. Article: Genetic segregation of PCR marker located within R f-1 Locus under cytoplasmic backgrounds donated by lndica and japonica rice

    Wang Shihua, Yunnan Agricultural University, Kunming(China), Rice Research Institute / Tan Yaling, Yunnan Agricultural University, Kunming(China), Rice Research Institute / Tan Xuelin, Yunnan Agricultural University, Kunming(China), Rice Research Institute

    Molecular Plant Breeding

    May.2009  , Issue (3)

    Abstract: 本文在籼、粳稻细胞质背景下研究了Rf-1位点上PCR标记M45461的遗传分离比例，结果显示M45461的遗传分离与提供雄配子的杂合体的细胞质背景有关。粳稻细胞质不影响M45461的遗传分离比例，而籼稻细胞质会导致M45461极显著偏向籼稻或具有籼稻遗传成分较重的亲本。在籼、粳稻细胞质背景下，杂合体的花粉育性分别为半不育和正常可育，而小穗育性均正常。说明M45461的偏分离与雄配子选择有关，而与雌配子关系不大。该结果还揭示粳稻细胞质可以与籼稻细胞核和谐共存，籼稻细胞质则与粳稻细胞核存在不谐和的遗传互作。 ... ...

    Abstract 本文在籼、粳稻细胞质背景下研究了Rf-1位点上PCR标记M45461的遗传分离比例，结果显示M45461的遗传分离与提供雄配子的杂合体的细胞质背景有关。粳稻细胞质不影响M45461的遗传分离比例，而籼稻细胞质会导致M45461极显著偏向籼稻或具有籼稻遗传成分较重的亲本。在籼、粳稻细胞质背景下，杂合体的花粉育性分别为半不育和正常可育，而小穗育性均正常。说明M45461的偏分离与雄配子选择有关，而与雌配子关系不大。该结果还揭示粳稻细胞质可以与籼稻细胞核和谐共存，籼稻细胞质则与粳稻细胞核存在不谐和的遗传互作。这一结论可以为籼粳分化的研究提供一些参考，也可为籼粳杂交父母本选择提供参考。[著者文摘]
    Keywords RICE ; CYTOPLASM ; PCR ; RIZ ; CYTOPLASME ; PCR ; ARROZ ; CITOPLASMA ; PCR ; http://www.fao.org/aos/agrovoc#c_6599 ; http://www.fao.org/aos/agrovoc#c_2093 ; http://www.fao.org/aos/agrovoc#c_34079
    Language zho
    Document type Article
    ISSN 1672-416X
    Database AGRIS - International Information System for the Agricultural Sciences and Technology

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    Kategorien

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  4. Article: Early hybrid testing in tropical maize: Are molecular markers useful for selecting the parental component

    Pongsai Chuanchai(Yunnan Agricultural University, Kunming (China). Faculty of Agriculture and Biotechnology) E-mail:chuanchaip@yahoo.com / Tan Xuelin(Yunnan Agricultural University, Kunming (China). Rice Research Institute) / Anek Silapapun(Bangkok Seed Industry, Bangkok (Thailand)) / Pradit Suthipong(Xiang Fan Chia Tai Agriculture Development, Chengdu (China)) / Luan Wei(Yunnan Agricultural University, Kunming (China). Rice Research Institute) / Messmer, Rainer(Universitaetstrasse 2, Zurich (Switzerland). Institute of Plant Sciences. ETH Zurich)

    Kasetsart Journal (Natural Sciences) (Thailand)

    Jan-Feb 2010  , Issue (1)

    Keywords Zea mays ; Maize ; Hybrids ; Genetic markers ; Selection ; Heterosis ; Combining ability ; Genetic distance ; Yields ; Tropical zones
    Language English
    Document type Article
    ISSN 0075-5192
    Database AGRIS - International Information System for the Agricultural Sciences and Technology

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