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中国科学（C辑） 1998年第6期28卷 536-541页

作者：罗利军梅捍卫赵新华钟代彬王一平余新桥应存山 ZhikangLi A.H.Paterson DaolongWang r.tabien L.Zhu J.W.Stansel TexasA&MUniversity 中国水稻研究所杭州310006

利用 3个致病性不同的水稻白叶枯病菌小种 ,对由Lemont/特青培育的 31 5个F10 重组自交系群体进行抗性基因 (QTL)rFLP分析 .共发现 1个主基因、1 0个QTL及 9对互作位点与白叶枯病菌抗性有关 .其中 ,主基因Xa4定位于第 1 1染色体上 .Xa4... 详细信息

利用 3个致病性不同的水稻白叶枯病菌小种 ,对由Lemont/特青培育的 31 5个F10 重组自交系群体进行抗性基因 (QTL)rFLP分析 .共发现 1个主基因、1 0个QTL及 9对互作位点与白叶枯病菌抗性有关 .其中 ,主基因Xa4定位于第 1 1染色体上 .Xa4对Cr4和CX0 8表现显性主基因遗传 ,但对Cr6则表现为一个主要的加性QTL的作用 .主基因小种专化性明显大于QTL .QTL之间以及QTL与主基因之间效应累加 ,共同提供抗病性的强度和稳定性 .在感病亲本中 ,亦存在抗性QTL .因此 ,来源不同的中抗材料可能是水平抗性的良好基因源 .研究还表明 ,所定位的QTL与其他研究发现的抗不同病原菌的基因 (QTL)处于相近的染色体位置 ,意味着它们可能是同一抗性基因族的成员 .

关键词：白叶枯病小种专化性水稻基因定位抗性基因

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Parental Selection in rice Cultivar Improvement

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rice science 2013年第1期20卷 45-51页

作者： Stanley Omar P B.SAMONTE rodante E.tabien Lloyd T.WILSON rice Experiment Station California Cooperative Rice Research FoundationInc.BiggsCA 95917USA Texas A&M AgriLife research and Extension Center BeaumontTexas 77713USA

The evaluation of rice （Oryza safiva L.） cultivars assists breeders in identifying useful trait relationships and in selecting parents as donors of specific traits. This study was conducted to compare long-grain rice cultivars using genotype x trait （GT） biplot analysis and determine potential donors of traits related to grain yield and quality. Seventeen cultivars in the 2005 and 2006 Uniform regional rice Nursery in Beaumont, Texas, USA were analyzed for 20 traits using GT biplot analysis. The GT biplots showed the diversity among cultivars with regards to yield-related traits. Cultivars recommended as donor parents were： Trenasse, Spring, Presidio, and Cocodrie for high grain yield and head rice rate Trenasse and Presidio for semi-dwarfness; Banks for tall plant height; Wells for high flag leaf area, panicle weight, and number and mass of filled grains per panicle; Hidalgo for high tiller density; Francis for high number of spikelets per panicle; Spring and Trenasse for short flowering duration; Cheniere for more days to heading and maturity and Spring for less days; and Spring and Hidalgo for high grain weiqht. Breeders can use these cultivars with specific traits to increase qrain yield and quality.

关键词： diversity genotype × trait biplot analysis grain yield grain quality parental selection rice

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Evaluation and Selection of High Biomass rice (<i>Oryza sativa L.</i>) for Drought Tolerance

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American Journal of Plant Sciences 2015年第12期6卷 1962-1972页

作者： Aditi Kondhia rodante Escleto tabien Amir Ibrahim Texas A&M AgriLife research and Extension Texas A&M University Beaumont USA

Biomass production is important in increasing yield not only for food but also for bio-fuel production that depends on high dry matter. Due to climate change, occurrence of drought may be prevalent and this affects both grain and biomass yields in crops including rice. The objectives of this study were to determine the performance of selected high biomass breeding rice lines to different levels of drought and use several drought tolerance indices to identify best genotypes that could be grown in unfavorable water stressed areas. A rainfed and flooded trial was conducted to evaluate 20 selected breeding lines for biomass production and ten entries from the same set were grown in the greenhouse at three different field capacities (FC, 50%, 75%, 100%). Most of the genotypes performed well under non-stressed conditions (flooded and 100% FC) but some genotypes performed well in water stressed condition. The plants had lower plant height, tiller plant-1, and total biomass at maturity under rainfed conditions and their flowering was delayed compared to flooded conditions. In the greenhouse, water stress slowed the rate of increase in height, and produced lower shoot and root weight, percent dry matter (% DM) and total biomass. However, drought enhanced the rate of tiller production. Two genotypes were found to more tolerant to drought stress and could be used for cultivation under water stress condition to get optimum biomass yields. These genotypes can be identified using drought tolerance indices, particularly stress tolerance index (STI), geometric mean productivity (GMP), mean productivity (MP) and harmonic mean (HArM), as these have a similar ability to separate drought sensitive and tolerant genotypes. Genetic and molecular analyses, and detailed characterization of these genotypes will help understand their inheritance pattern and the number of genes controlling the traits and determine specific leaves and root traits important in developing high biomass rice.

关键词： High Biomass rice Water Stress Selection Indices

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rFLP mapping and race specificity of bacterial blight resistance genes (QTLs) in rice

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Science China(Life Sciences) 1998年第5期41卷 542-547页

作者：罗利军梅捍卫赵新华钟代彬王一平余新桥应存山 Z.K.Li A.H.Paterson D.L.Wang r.E.tabien L.Zhu J.W.Stansel China National rice research Institute Hangzhou China

By using a set of 315 recombinant inbred lines (rILs) from the cross Lemont (japonica)×Teqing (indica) and a complete linkage map with 186 well distributed rFLP markers and 3 morphological markers, a major gene (Xa4) and 10 QTLs and 9 pairs of epistasis loci conferring horizontal resistance to three strains of \%Xanthomonas oryza\% pv \%oryza (Xoo)\% were mapped. The Teqing allele at Xa4 on chromosome 11 acts as a dominant resistant gene against pathogen race Cr4 and CX08, but as an additive QTL with a significantly (47%) reduced effect \{against the\} virulent strain, Cr6. The major gene Xa4 exhibited stronger degree of race specificity. Most QTLs showed consistent levels of resistance against all three \%Xoo\% strains. The results suggest that a high level durable resistance to \%Xoo\% may be achieved by cumulative effects of multiple QTL.

关键词： bacterial blight rFLP QTL race specificity.

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