Analysis of yield and water use of HD297 in Beijing were done based on the daily meteorology data from 1971 to 2000 by the ORYZA2000 model which has been evaluated, and the results show that the average potential yield of 30 years is 8573 kg/hm2, and the average rainfed yield of 30 years is 4083.6kg/hm~2. Average maximum water requirement for the whole growth season is 712.7mm, but the rainfall of growth season in different years varies largely and there is 50% years in which water shortage reaches as much as 30%.
以检验后ORYZA2000模型为基础，利用北京地区1971～2000年的逐日气候资料，分析北京地区旱稻产量与水分的关系，结果表明：北京地区旱稻产量潜力30年平均值为8573kg/hm~2，多年平均的雨养产量为4083.6kg/hm~2；生育期内的多年平均最大需水量为712.7mm，生育期内降水量年际变异较大，50%的年份水分亏缺率达到30%。
The process of sexual reproduction of Oryza rufipogon was investigated with light microscope and electron microscope in the present paper.
花药还处在造孢时期，花药壁层由4—5层细胞组成，而且被胞间连丝联结，其造孢细胞间存在胞间连丝和胞质通道。
S extract had an inhibition effect against Sphaerotheca fuligenea, The inhibition rate was 100% when extract concentration was 20mg/mL and the inhibition rate got to 67.66% even at the concentration of 2.5mg/mL. The extract of E. humifusa had different preventive effects against four strains of S. fuliginea from four districts in Shanghai. The preventive effects on the Qibao and Baoshan were better than those of Nanhui and Qingpu. The microorganism inhibition experiment by filter papers indicated that the extract of E. humifusa had higher inhibition effect against bacteria than on pathogenic fungus. Diameters of the zone of inhibition of salmonellas, Echerichia coli and Staphylococcus aureus were 15.77mm, 12.27mm and 10.53mm respectively. The extract of E. humifusa had a certain effect against Colletotrichum lagenarium, Botrytis cinerea, Rhizoctomia solan and Pyricularia oryza but no effect against Helminthosporium maydis and Gibberella zea. The 4 cation exchange resins and ethanol deposition were used to isolate the active fractions from supernate after alkali deposition.
提取液对黄瓜白粉病菌体外分生孢子萌发抑制实验表明地锦提取液对黄瓜白粉病菌分生孢子的萌发有很好的抑制作用，抑制率随着地锦提取液浓度的增大而增高，当浓度为20mg/mL时，抑制率达到100%，即使在浓度为2.5mg/mL时，抑制率也达到了67.66%；室内盆栽苗期预防性实验表明了地锦提取液对上海4个不同地区的黄瓜白粉病菌均具有不同程度的抑制效果，对七宝和宝山地区的菌株抑制效果优于南汇和青浦地区的菌株；用滤纸片法测定了地锦提取液的抑菌谱，实验结果表明地锦提取液对供试的4种植物病原真菌：黄瓜炭疽病菌、黄瓜灰霉病菌、水稻纹枯病菌和水稻稻瘟病菌均具有一定的抑制效果，而对玉米小斑病菌和小麦赤霉病菌没有抑制效果，对供试的3种人类致病细菌沙门氏菌、大肠杆菌和金黄色葡萄球菌均具有很好抑菌效果，抑菌圈直径分别为：15.77mm，12.27mm和10.53mm。
To enhance the functional analysis of genome sequence and positional cloning of genes of the wild species of rice, two large-insert plant transformation-competent BIBAC and TAC libraries were constructed for Oryza barthii, a wild ancestor of African cultivated rice.
第三，以本图谱叠连群中选出的637个克隆进行末端测序得到的652个克隆末端测序结果作为标记，使本图谱可以与现有的水稻序列图谱相比对和结合，构建更为完善的物理图谱、遗传图谱与序列图谱相结合的综合图谱。
Low vagility of seed and vegetative propagules of Oryza rufipogon limits population expansion.
普通野生稻种子和营养繁殖体的散布能力较弱，从而影响到该植物种群的增长。
We performed a diversity study of the MOC1 locus in Asian cultivated rice and its putative wild progenitors. Representative samples were chosen for both wild and cultivated rice, including 8 accessions of Oryza sativa ssp.
我们选择了一个可以代表水稻及其祖先野生稻多态性的群体展开对MOC1的研究，群体包括8份籼稻、7份粳稻、7份普通野生稻和6份一年生野生稻。
The crosses were made between four japonica rice (Oryza sativa L.) landraces Bodao, Tieganqing, Jiangnanwan and Queernuo from Taihu Lake region, which were highly resistant to the blast, and a susceptible japonica variety Suyunuo to produce F1 and F2 generations. The P1, P2, F1 and F2 generation from various combinations were inoculated separately with Japanese blast strain Hoku 1 and Chinese races ZE3 and ZG1 to study genetic patterns of resistance in the four landraces to the blast.
以太湖流域粳稻地方品种薄稻、铁杆青、江南晚和缺儿糯等广谱、高抗稻瘟病为材料，与高感稻瘟病品种苏御糯杂交，获得杂交F1、F2，分别接种日本稻瘟病鉴别菌系北1和中国稻瘟病菌生理小种ZE3、ZG1，根据P1、P2、F1和F2等不同世代植株的抗、感反应，分析地方品种对不同稻瘟病菌生理小种的抗性遗传机理。
The crosses were made between four japonica rice (Oryza sativa L.) landraces Bodao, Tieganqing, Jiangnanwan and Queernuo from Taihu Lake region, which were highly resistant to the blast, and a susceptible japonica variety Suyunuo to produce F1 and F2 generations. The P1, P2, F1 and F2 generation from various combinations were inoculated separately with Japanese blast strain Hoku 1 and Chinese races ZE3 and ZG1 to study genetic patterns of resis-tance in the four landraces to the blast.
以太湖流域粳稻地方品种薄稻、铁杆青、江南晚和缺儿糯等广谱、高抗稻瘟病为材料，与高感稻瘟病品种苏御糯杂交，获得杂交F1、F2 ，分别接种日本稻瘟病鉴别菌系北1和中国稻瘟病菌生理小种ZE3、ZG1，根据P1、P2、F1和F2等不同世代植株的抗、感反应，分析地方品种对不同稻瘟病菌生理小种的抗性遗传机理。
With the completion and initiation of Oryza sativa and Zea mays genome sequencing respectively, such functions will be more obvious.
随着水稻、玉米基因组序列的完成与启动，这方面的作用将更加显著。
The domination sites and catalytic active sites in PAL protein of Oryza sativa and Zea mays were also found in NoPAL...
NoPAL1编码的蛋白质序列包含与水稻、玉米PAL蛋白质相同的脱氨基位点和催化活性位点。
The characters of CCoAOMT protein such as the constitution of amino acid, Theoretical pI, alienation/proximity water area, secondary structure in Chinese fir were analyzed by a series of bioinformatics software, and then compared with Picea abies, Arabidopsis thaliana and Oryza sativa. The three-dimensional structure of it was constructed by homology modeling, then was analyzed and validated.
利用生物信息学方法分析了杉木CCoAOMT蛋白的氨基酸组成、等电点、疏水/亲水区、二级结构等蛋白质性质，并同欧洲云杉、拟南芥和水稻的蛋白进行了对比，并用生物信息学软件对其空间结构进行了模拟，同时对模建结果进行了结构质量的分析与检测。
These cells in conventional japonica root arrayed tightly and cell walls lignified to a great extent.
在旱作和淹水两种培养方式下，研究了5种基因型水稻Oryza sativa L。
The DNA damage caused by different concentration of Cu 2+, Cd 2+ or Hg 2+ was investigated in rice Oryza sativa cv.
作者中文名：葛才林；杨小勇；孙锦荷；王泽港；罗时石；马飞；龚峥
Photoperiod-sensitive genic male sterile ricc-Nongken 58S and wild type Nongken 58 Oryza sativa L.
从第二次枝梗原基分化期开始用长日照或短日照处理光敏感核不育水稻农垦58S和常规水稻农垦58。
MethodsThe Oryza sativa L. root was extracted with ethanol and the chemical constituents of the extract were isolated and purified on ion exchange chromatography and polymide column.
方法用乙醇提取，经离子交换和聚酰胺柱分离纯化。
The homologous comparison of the deduced amino acid sequence with other plant EPSP synthase proteins shows the identity to those of Fagus sylvatica, Oryza sativa Athaliana, phasedus vulgaris L respectively are 81%、81%、76%、74%.
同源比较该段序列所编码的氨基酸序列可以发现EPSP合成酶有较高的保守性，与欧洲山毛榉、水稻、拟南芥、菜豆的同源性分别为81%、81%、76%、74%。
The morphogenesis of floral organs in both srg mutant and wild-type rice Dular (Oryza sativa L.) was observed using the scanning electron microscope. The results showed that the floral primordia were differentiated under irregular pattern in srg mutant. After regular formation of lemma and palea primordia, the floral primordium of srg formed lodicule primordia inner to both lemma and palea, followed by the formation of stamens and carpel. Alternatively, floral primordia in srg were split to form two or more floral primordia. The number and position of stamens and carpels primordia were malformed.
利用扫描电子显微镜观察野生型水稻和裂颖水稻的颖花原基分化情况，结果发现，突变体水稻的幼穗在形成内、外稃原基后，有些颖花在形成浆片后并不是直接发育形成雄蕊原基，而是在外稃或内稃原基内侧又分化出浆片原基；有些颖花原基从中间缢裂，缢裂的颖花原基又分别形成类稃片的结构，颖花发育后期，6枚雄蕊发育畸形，并且观察到不同数目的雄蕊。
The five APETALA2-like genes in rice (Oryza sativa L.) display redundant but distinct expression patterns as demonstrated by RT-PCR and in situ hybridization.
原位杂交和RT-PCR结果表明水稻的5个APETALA2类基因在表达模式上既是冗余又是不同的。
The total content of Poaceae pollen in the rice field is 36％～88％, and the content of Oryza- type pollen is 30％～84％, averaging 57.41％.
研究结果表明，该区稻田耕土表层的禾本科花粉含量为36％～88％，其中水稻型花粉含量为30％～84％，平均含量为57.41％。
The homology analysis showed that these 5 fragments had very high homologies with the maize mRNA that hade been separated. S_ had 80% homology with cytochrome b5 gene of N. tabacum. SCT-TG had over 90% homology with α-tublin gene of Z. mays, Eleusine indica, Hordeum vulgare, Oryza sativa and Setaria viridis.
序列同源性分析表明：这 5 条片段都与已经分离的玉米 mRNA 有很高的同源性，S_与烟草细胞色素 b5基因有 80%的同源性、SCT-TG与玉米、牛筋草、大麦、狗尾草、水稻等的α-微管蛋白基因有 90%以上的同源性。