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- This the first report of cytogenetic study of flag leaf position in common wheat ,Triticum aestivum L. 摘要 本文首次对小麦旗叶姿态进行了比较系统的细胞遗传学研究。
- The cultivars that had a high chl (a+b) value,low chl (a/b) value and relatively big Flag Leaf area could be selected in wheat breeding. 小麦育种上应选择生育后期叶绿素 (a +b)较高 ,叶绿素 (a/b)值低 ,且旗叶面积相对较大的品种。
- There were close correlation in the same SOD, POD, CAT, NR and GS activity, and MDA content between roots and flag leaf. 小麦生长发育后期根系与旗叶超氧化物歧化酶(SOD)、过氧化物酶(POD)和过氧化氢酶(CAT)的活性、丙二醛(MDA)的含量、氮素代谢特性是相互联系、密切相关的;
- Effect of irrigation on photosynthesis decline of winter wheat flag leaf during senescence was studied with field plot experiment. 利用田间小区试验研究了不同灌水对冬小麦旗叶光合功能衰退的影响。
- The effects of deep cultivation-root cutting on the senescence of flag leaf after anthesis and yield have been studied for dry land wheat production. 在旱地大田条件下研究了深耘断根对旱地高产小麦花后旗叶衰老及产量的影响。
- The role of overirrigation improving photosynthesis decline of flag leaf was mainly at the latter stage and had no role for yield increase. 过量灌水改善旗叶光合衰退的效果主要表现在后期,对产量提高的意义并不大。
- Plastic film mulching markedly increased biomass per a plant,flag leaf area,tillers per unit soil area,grains per ear and 1 000-grain weight. 覆膜显著增加单株生物量、旗叶面积、亩穗数、穗粒数和千粒重。
- Results indicated that the order of net photosynthetic rate of the flag leaf Was: Taishan No.1 (adaptability moderate) >Jinan No.13 (strong) >Changle No.5 (weak) . 结果表明,旗叶的光合速率顺序为: 泰山一号(中度耐肥)>济南13(高度耐肥)>昌乐5号(不耐肥)。
- The g enetic variance coefficients, broad sense-heritability and relative genetic adva nces of flag leaf inclination angles were high, and their selective effect was better. 结果表明:小麦旗叶倾角的遗传变异系数、广义遗传力和相对遗传进度较高,选择效果较好;
- Leaf rolling index (LAl) of flag leaf (from top) in 2 hybrids withhigher LRI reached 44%-47%, in 2 hybrids with medium LAl was l5%-l6%, in 2hybrids with low LAl was l0%-l l%. 下表面与上表面光合强度比在高叶片卷曲度组合中为1.;19-1
- The results showed that the SPAD values of different parents flag leaf existed considerable difference, the parent existed considerable difference at different growth stages too. 结果表明:不同亲本剑叶SPAD值存在着较大的差异,同一亲本在不同的发育时期SPAD值也存在着较大的差异。
- Soluble protein, DNA, and RNA contents in flag leaf of cultivar senescence at early stage rapidly reduced and the activities of protease and nuclease rapidly raised. 早衰型小麦品种旗叶可溶性蛋白质含量、DNA和RNA含量下降快 ,蛋白酶和核酸酶活性上升快 ;
- The result showed that the variant coefficient of PEPOEFL was 7.8%.The photosynthetic effect of photosynthetic organ except flag leaf was mutually oppositely related. 结果表明,非旗叶光合效应在不同材料间的变异系数为7.;8%25,并与千粒重之间存在显著负相关。
- The paraffin section of the flag leaf of wheat during its senescence was observed with SEM.The results showed: 1) during the senescence of wheat, the nuclear shape altered obviously. 对小麦旗叶衰老过程中的石蜡切片进行扫描电镜观察,结果表明,(1)旗叶衰老过程中,细胞核形态发生明显变化。
- Abstract: Using Improved serape-making method,the studies were made on the stomatal density of flag leaves of rice. 摘 要: 用改良刮制法研究了水稻剑叶的气孔密度。
- We found that from the flag leaves full-expanded to senescence anaphase, there were C4 pathway enzymes in flag leaves. 本实验亦证明三个水稻品种从剑叶全展开始直至衰老后期叶片中始终存在有C4途径的酶活。
- Correlation analysis revealed that flag leave angle increased grain yield by increasing spikelet fertility. 相关性分析表明,较小的剑叶角度可通过提高结实率进而显著增加产量。
- Chl content and NR activity of flag leaf had been kept relatively high from frowing to 18 days after anthesis in irrigation treatments (W1 and W2) and had higher transportion ratio of nitrogen. 在开花至花后18d内,灌水(W1、W2)各处理的旗叶叶绿素含量与硝酸还原酶活性始终维持在较高水平,且其氮素转运率明显高于不灌水处理(W0)。
- The most significant variance lay in the 1000-seed-weight, followed by flag leaf length and inflorescence shape and then by distance between flag leaf and inflorescence with least in inflorescence length, plant form, leaf width and seed length. 其中,种子千粒重变异最大;旗叶长度、花序形状次之;穗叶距、花药宽度、旗叶宽度等性状变异中等;而花序长度、株型、叶宽、种子长度变异最小。
- The absorption spectra of Chl was different between flag leaf and hull, the absorbance of the medium that contain Chl of hull was more strong than that of flag leaf in zone of short wavelength when the Chl concentration of medium was the same. 谷壳与旗叶相同叶绿素浓度提取液的光吸收光谱特性不同,在短波区谷壳叶绿素提取液的光吸 收明显比旗叶叶绿素的高;
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries