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1多年生黑麦草、雀麦根系形态和生长对土壤干旱的适应性显示文摘为了研究牧草根系对干旱环境的适应性,选择多年生黑麦草(Lolium perenne)和雀麦(Bromus valdivianus)进行盆栽试验,给予80%~85%有效水(PAW)充分供水和20%~25%PAW极端干旱两种水分模式,通过对两种牧草的根系外形、干物质积累和根系形态学分析,探求两牧草在极干旱胁迫下的有效生产策略。研究表明,两种牧草的根尖外形略有不同。雀麦根毛长而密,分生区细胞致密,伸长区较长;多年生黑麦草根毛稀疏,伸长区短。20%~25%PAW极干旱胁迫使黑麦草根系粗细不匀,出现畸形;而雀麦根系未见明显受害。两种牧草生物量在茎叶和根的积累无显著的种间差异和水分处理间的组间差异。雀麦和多年生黑麦草单株根系的总长度、根面积、根平均直径、根尖数和分叉数存在极显著差异。多年生黑麦草根量显著高于雀麦(至少P≤0.01),根长和面积是雀麦的1.5倍左右,根尖数和分叉数是雀麦的2倍以上。雀麦根系末端侧根分枝密度高,短且粗;多年生黑麦草侧根细而长。干旱胁迫显著减少了两种牧草的总根长度,促进了雀麦根的径向生长。总之,雀麦根毛区较多年生黑麦草发达,多年生黑麦草根量显著多于雀麦。黑麦草主要以根数量(量)取胜,采取广泛吸水的适应策略;雀麦以根毛发达,侧根分枝密度高(质)为主,采用确保有效吸水的适应策略。张咏梅 胡海英 白小明 Matthew Cory García-Favre Javier Ordóñez Iván P 2022中国生态农业学报(中英文)2022,30,11:3
2Physical structure,optical resonance,and surface-enhanced raman scattering of silver-island films on suspended polymer latex particles显示文摘SCHUELER P A IVES J T DELACROIX F 1993Anal Chem1993,65,8:1
3The use of a series of ketamine infusions in two patients with treatment-resistant depression显示文摘Messer M Haller IV Larson P 2010J Neu-ropsychiatry Clin Neurosci2010,22,:1
4In vitro anti-Helicobacter pylori activity of the probiotic strain Bacillus显示文摘Pinchuk IV Bressollier P Verneuil B 2001Antimicrob Agents Chemother2001,45,11:1
5Preliminary results from a study of the effect of soil pH on organic matter decay 显示文摘van Bergen P E Organic geochemical studies of soils from the roth amsted classical experiments IV 1998Org Geochem1998,29,57:1
6Co- leomegiUa maculata ( Coleoptera: coccinellidae) preda- tion on pea aphids promoted by proximity to dandelions 显示文摘HARMON J P IVES A R LOSEY J E 2000Oecologia2000,125,:1
7Piazza:mediation and integration infrastructure for semantic web data显示文摘Zachary G Ives Halevy A Y Mork P 2004Journal of Web Semantics2004,1,2:1
8Genome, transcriptome, and secretome analysis of wood decay fungus Postia placenta supports unique mechanisms of lignocellulose conversion 显示文摘Martinez D Challacombe J Morgenstern 1 Hibbett D Schmoll M Kubicek CP Ferreira P Ruiz-Duenas FJ Martinez AT Kersten P Hammel KE Wymelenberg AV Gaskell J Lindquist E Sabat G BonDurant SS Larrondo LF Canessa P Vicuna R Yadav J Doddapaneni H Subramanian V Pisabarro AG Lavin JL Oguiza JA Master E Henrissat B Coutinho PM Harris P Magnuson JK Baker SE Bruno K Kenealy W Hoegger PJ Kties U Ramaiya P kucas S Salamov A Shapiro H Tu H Chee CL Misra M Xie G Teter S Yaver D James T Mokrejs M Pospisek M Grigoriev IV Brettin T Rokhsar D Berka R Cullen D 2009PNAS2009,106,6:1
9Compression of complex-valued SAR images显示文摘Eichel P Ives R W 1999IEEE Trans Image Processing1999,8,:1
10Should we monitor vitamin B<sub>12</sub> and folate levels in Crohn’s disease patients?显示文摘Fernando Bermejo Alicia Algaba Ivá n Guerra Marí a Chaparro Gema De-La-Poza Paz Valer Belé n Piqueras Andrea Bermejo Javier Garcí a-Alonso Marí a-José rez Javier P Gisbert 2013Scandinavian Journal of Gastroenterology2013,,11:1
11Microvaseular Reconstruction of the Mandible in Irradiated Patients显示文摘Torroni A Gennaro P Aboh IV 2007J Craniofac Surg2007,18,6:1
12Spark-anodic oxide coatings formed on Al and Ti alloys in tungstate-containing phosphate- vanadate baths显示文摘RUDNEV V S LUKIYANCHUK IV BOGUTA DL KON'SHIN V V RUDNEV A S GORDIENKO P S 2002Protection of Metals2002,38,2:1
13Risk of acute coronary events and serum concentration of asymmetrical dimethylarginine显示文摘Valkonen VP P(a)iv(a)H Salonen JT 2001Lancet2001,358,9299:1
14Increased expression of p50NF-kappaB and constitutive activation of NF-kappaB transcription factors during mouse skin carcinogenesis显示文摘Budunova IV Perez P Vaden VR 1999Oncogene1999,18,52:1
15Chemotherapy compared with biochemotherapy for the treatment of metastatic melanoma: a meta analysis of 18 trials involving 2,621 patients 显示文摘Ives NJ Stowe RL Lorigan P 2007J Clin Oncol2007,25,34:1
16Final results of phase ]]I trial in regionally advanced unreseetable non-small cell lung cancer: Radiation Therapy Oneology Group, Eastern Cooperative Oneology Group, and Southwest Oneology Group显示文摘Sanse W Kolesar P Taylor S IV 2000Chest2000,117,:1
17mda-7/IL-24 : multifunctional cancer-specific apoptosis-inducing eytokine显示文摘Gupta P Su ZZ Lebedeva IV 2006Pharmacol Ther2006,111,3:1
18Oxidize low density lipoprotein in patients with transplants associated coronary artery disease显示文摘 Stassen JM Cleemputt IV 1998Arterioscler Thromb Vasc Biol1998,18,:1
19Morbidity and mortality in rural community-dwelling elderly with low total serum cholesterol显示文摘 BONINO P TRAVEN N D 1993J Gerontol1993,48,3:1
20Hydatid disease:radiologic and pathologic features and complications显示文摘Ivàn P Antonio S Arrazola J 2000Radiographics2000,20,:1
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