搜索结果: 1-15 共查到“知识库 农学 NO”相关记录120条 . 查询时间(0.22 秒)
【目的】 研究一氧化氮 (NO) 对镉 (Cd) 胁迫下水稻苗期生理生化及氮代谢响应的调节作用，探讨通过清除NO提高水稻耐Cd能力的措施。 【方法】 以Cd高积累 (TN1) 和Cd低积累 (春江06) 品种为材料，进行了Cd胁迫 (40 μmol/L) 水培试验。以Cd胁迫营养液为对照，在对照基础上设置添加硝普钠 (Cd+SNP)、添加NO清除剂CPTIO (Cd+CPTIO)、添加...
Characteristics of annual greenhouse gas flux and NO release from alpine meadow and forest on the eastern Tibetan Plateau
Alpine ecosystem Meadow Forest Non-CO2 greenhouse gas Nitric oxide
2024/2/27
The importance of the world's largest plateau (i.e., the Tibetan Plateau) as a source/sink for atmospheric greenhouse gases (GHGs) still remains uncertain as field observations covering entire years a...
探究NO调控遮光胁迫下长春花体内生物碱积累的分子机制。方法 以长春花幼苗为材料,遮光胁迫下施加外源NO供体(SNP),7 d后采叶样,研究长春花幼苗叶片的生长形态变化,HPLC测定激素和生物碱的含量变化,荧光定量RT-PCR法分析关键基因的表达。
旨在比较牦牛和柴达木黄牛低氧通气反应（HVR）特征及颈动脉体（CB）中一氧化氮（NO）、一氧化氮合酶（NOS）含量。选择生活在海拔3 200 m临床健康的成年牦牛和柴达木黄牛进行13.9% O2低氧（模拟海拔6 000 m）通气反应；采用荧光定量PCR、酶联免疫吸附（ELISA）双抗体夹心法和免疫组织化学方法对海拔3 200 m牦牛、柴达木黄牛及模拟海拔6 000 m时CB中的NOS mRNA和蛋...
北京设施菜地N2O和NO排放特征及滴灌优化施肥的减排效果
设施菜地 滴灌施肥 优化施肥 N2O和NO排放
2019/8/7
【目的】量化设施菜地N2O、NO排放特征，分析其影响因素，以期为科学评估农田生态系统N2O、NO排放提供关键参数。【方法】以黄瓜品种‘金胚98’为供试材料，在北京房山区窦店乡的温室大棚内进行了田间试验，供试土壤类型为石灰性褐土，质地为壤土。试验共设4个处理：漫灌，不施氮肥 (CK)；漫灌，农民习惯施肥 (FP)；滴灌，农民习惯施肥 (FPD)；滴灌，优化施氮 (OPTD)。常规氮肥施用量为N 12...
为探究外源NO对盐胁迫下甜高粱种子萌发和幼苗生长的影响,以国能4号甜高粱为试验材料,采用不同浓度(0.05、0.1和0.2 mmol·L-1)硝普钠(SNP,NO供体)处理1.6%NaCl胁迫下的种子和幼苗,统计种子发芽数,测定幼苗叶片叶绿素、脯氨酸、可溶性糖、可溶性蛋白、丙二醛(MDA)含量及超氧化物歧化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)和抗坏血酸过氧化物酶(APX)活性等...
【目的】研究不同浓度NO气体对小白菜生物量、营养及抗氧化品质的影响，以期为大气NO污染的植物生态响应研究及农业生产提供理论依据。【方法】以小白菜为研究对象，采用密闭体系内土培的种植方式，研究浓度 (0、100、200和400 nL/L) 外源NO气施对小白菜生物量以及营养品质 (硝酸盐、可溶性糖和可溶性蛋白) 和抗氧化品质 (总酚、总黄酮和抗坏血酸) 的影响。【结果】1) 100、200和400 ...
探讨盐胁迫下黄瓜幼苗内源一氧化氮（NO）的生理生化调节机理及其调控途径，为揭示黄瓜的抗盐机理和生产应用提供参考。【方法】以黄瓜幼苗为研究对象，采用一氧化氮合成酶抑制剂（L-NAME，L-硝基精氨酸甲酯）、硝酸还原酶抑制剂（tungstate，钨酸钠）和一氧化氮清除剂（cPTIO，4-羧基苯-4,4,5,5-四甲基咪唑-1-氧-3-氧化物）处理盐胁迫下的黄瓜幼苗，研究处理对黄瓜幼苗叶片内源NO含量、...
【目的】本研究通过克隆小白菜光合暗反应中限制核酮糖-1, 5-二磷酸(RuBP)再生的关键酶景天庚酮糖-1,7-二磷酸酶(sedoheptulose-1, 7-bisphosphatase,SBPase)基因,分析铜胁迫及添加外源一氧化氮(NO)供体硝普钠(SNP)缓解铜胁迫时该基因的表达情况,并将其与对应处理下小白菜净光合速率(Pn)的变化情况结合在一起进行分析,以期为全面了解外源NO缓解铜胁迫...
Delayed Glyphosate Application for No-Till Fallow in the Driest Region of the Inland Pacific Northwest
Low precipitation zone plant competition soil water storage
2015/12/23
Farmers typically use three applications of glyphosate to control weeds in no-till fallow. Some are now
experimenting with an unconventional modification to this widely used approach. This modi...
Towards a No-Till No-Spray Future? Introduction to a Symposium on Nonchemical Weed Management for Reduced-Tillage Cropping Systems
No-Till No-Spray Future Symposium on Nonchemical Weed
2015/12/23
Reduced-tillage systems including no-tillage and stripillage have well-known benefits for conserving and improving
soils, protecting vulnerable crops from extreme weather
events, and reducing ...
Overcoming Weed Management Challenges in Cover Crop–Based Organic Rotational No-Till Soybean Production in the Eastern United States
Reduced-tillage organic
2015/12/23
Cover crop–based organic rotational no-till soybean production has attracted attention from farmers, researchers, and other
agricultural professionals because of the ability of this new system to enh...
A DdeI PCR-RFLP detecting a novel missense mutation of the POU1F1 gene showed no effects on growth traits in cattle
bovine POU1F1 gene PCR-RFLP growth traits
2015/6/5
In this study, a novel missense (NM_174579:c.1201C>T) mutation in exon 6 at the bovine POU1F1 locus is reported, which results in p.S284F, namely, Ser (TCT) > Phe (TTT) at position 284 of the mature p...
Biological potential and diffusion limitation of methane oxidation in no-till soils
methane oxidation in no-till soils Biological potential
2015/1/16
Long term no-till (NT) farming can improve the CH4 oxidation capacity of agricultural lands through creation of a favorable soil environment for methanotrophs and diffusive gas transport. However, lim...