查询词典 alfalfas

The results showed: 1 Alfalfas grown for different lengths of time had considerable influence on photosynthetic characteristics of which the most important was stomatal conductance followed by transpiration rate and the chlorophyll relative content. 2 Diurnal variation in Pn and Tr had two peaks, and an obvious midday depression. 3 The net photosynthetic rate was significantly positively correlated with photosynthetic radiation, stomatal conductance, the relative chlorophyll content, and transpiration rate. The net photosynthetic rate was significantly negatively correlated with intercellular CO2 concentration.

结果表明，1生长年限对苜蓿光合特性有较大的影响，对气孔导度的影响最大，其次是蒸腾速率和叶绿素相对含量。2苜蓿叶片净光合速率、蒸腾速率日变化均呈现&双峰&曲线，有明显的光合&午休&现象。3净光合速率与光合有效辐射、气孔导度、叶绿素相对含量呈极显著正相关，与蒸腾速率呈显著正相关，与田间CO2浓度呈极显著负相关。

The chromosome genomes of Deqin wild alfalfa variety (Medicago sativa L.), scattered alfalfa variety (AC-3) in Yunnan province and 8 foreign introduced cultivated alfalfas were classified and compared by karyotypic analysis.

以云南野生种紫花苜蓿、逸散种紫花苜蓿(AC-3)和8个国外引进栽培种紫花苜蓿为材料，采用核型分析方法对供试材料的染色体组进行了分类和比较。

Makes the decency coal, the pearlite and the vermiculite carries on between the root nodulebacteria and the alfalfa variety match as the matrix, alfalfas nitrogen fixation effect and thegrowing trend is higher than other two kind of matrix, the decency coal may first take the highlyeffective strain screens matrix.

以风化煤为基质进行根瘤菌与苜蓿品种之间的亲和性的匹配试验中，苜蓿的固氮效果和长势均高于珍珠岩和蛭石这两种基质。因此，风化煤可优先作为高效菌株筛选的基质。

Quenching of chlorophyll fluorescence decreased and Non-photochemical Quenching of chlorophyll fluorescence increased for both alfalfas under drought stress. Generally speaking, qP decreased less and qN increased more in the high drought-resistance alfalfa than in the low drought-resistance alfalfa, suggesting that when under drought stress, the electron transport activity and photosynthetic apparatus was damaged less in the alfalfa with high drought-resistance than in the alfalfa with low drought- resistance.

PSⅡ光化学淬灭系数、非光化学淬灭系数的变化表现为干旱胁迫下两种紫花苜蓿qP值降低、qN值升高，总体上抗旱性强的紫花苜蓿qP降低的幅度低且qN升高幅度大，表明抗旱性强的紫花苜蓿PSⅡ反应中心电子传递活性受到的影响小，光合机构的损伤程度低。

Nine different aphid-resistant alfalfas and four cross bred F1 were used in this experiment to investigate better dosage in SSR technique system and to seek the best combination among factors.At last,the best SSR technique system was established. The Taq DNA polymerase was 0.2μL(5U/μL),the 10×Buffer(Mg2+Plus)was 2.5μL , the dNTP Mixture was 2μL ( 2.5mmol/L), the primer was 1.5μL (10μmol/L),the template DNA was 1μL,the ddH2O was 16.3μL ,and the whole system was 25μL.

以九个不同抗蚜级别的苜蓿品种及四个杂交F1代为试材，摸索SSR反应体系中各个影响因素的浓度和用量，确定适合苜蓿抗蚜虫基因定位的SSR反应体系：其中Taq DNA聚合酶0.2μL(5U/μL)，10×Buffer(Mg2+Plus) 2.5μL，dNTP Mixture 2μL (各2.5mM)，引物各1.5μL (10μM)，模板DNA1μL，ddH2O 16.3μL补足25μL。

The result provide a basic foundation to produce transgenic alfalfas that are resistant against salt stress by introducing Na+/H+ antiporter gene from synechocystis species pcc 6803.Key words gene engineering Medicago sativa L. hypocotyls callus tissue culture

本试验结果为下一步将来自蓝藻的Na+/H+ an-tiporter基因转入苜蓿，获得转基因耐盐苜蓿奠定了基础。

Guinea-pig ; Alfalfas ; Sheep straw ; Rice straw

豚鼠；苜蓿；羊草；稻草

They experience feelings deeply and intensely, and their emotions are often mercurial.

他们的感情深刻而强烈，情绪善变。

Surrounded with or as if with a rampart.

用城墙围绕的用城墙围绕的或类似于为城墙围绕的