{"id":"https://openalex.org/W2045054976","doi":"https://doi.org/10.1111/j.1744-7348.2009.00320.x","title":"Seed germination ecology of Portulaca oleracea L.: an important weed of rice and upland crops","display_name":"Seed germination ecology of Portulaca oleracea L.: an important weed of rice and upland crops","publication_year":2009,"publication_date":"2009-03-02","ids":{"openalex":"https://openalex.org/W2045054976","doi":"https://doi.org/10.1111/j.1744-7348.2009.00320.x","mag":"2045054976"},"language":"en","primary_location":{"id":"doi:10.1111/j.1744-7348.2009.00320.x","doi":"https://doi.org/10.1111/j.1744-7348.2009.00320.x","is_oa":false,"landing_page_url":"https://doi.org/10.1111/j.1744-7348.2009.00320.x","pdf_url":null,"source":{"id":"https://openalex.org/S71879176","display_name":"Annals of Applied Biology","issn_l":"0003-4746","issn":["0003-4746","1744-7348"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-c","jufo-1","norway-1","poland-100","russia-white-list-1"],"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Annals of Applied Biology","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5077353489","display_name":"Bhagirath Singh Chauhan","orcid":"https://orcid.org/0000-0003-1540-4668","observed_orcids":["https://orcid.org/0000-0003-1540-4668"]},"institutions":[{"id":"https://openalex.org/I162210093","display_name":"International Rice Research Institute","ror":"https://ror.org/0593p4448","country_code":"PH","type":"nonprofit","lineage":["https://openalex.org/I1286583668","https://openalex.org/I162210093"]}],"countries":["PH"],"is_corresponding":true,"raw_author_name":"B.S. Chauhan","raw_affiliation_strings":["Crop and Environmental Sciences Division, International Rice Research Institute, Los Ban\u0303os, Philippines","Crop and Environmental Sciences Division, International Rice Research Institute, Los Ba\u00f1os, Philippines"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Crop and Environmental Sciences Division, International Rice Research Institute, Los Ban\u0303os, Philippines","institution_ids":["https://openalex.org/I162210093"]},{"raw_affiliation_string":"Crop and Environmental Sciences Division, International Rice Research Institute, Los Ba\u00f1os, Philippines","institution_ids":["https://openalex.org/I162210093"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5027643529","display_name":"David Edward Johnson","orcid":"https://orcid.org/0000-0003-4695-606X","observed_orcids":["https://orcid.org/0000-0003-4695-606X"]},"institutions":[{"id":"https://openalex.org/I162210093","display_name":"International Rice Research Institute","ror":"https://ror.org/0593p4448","country_code":"PH","type":"nonprofit","lineage":["https://openalex.org/I1286583668","https://openalex.org/I162210093"]}],"countries":["PH"],"is_corresponding":false,"raw_author_name":"D.E. Johnson","raw_affiliation_strings":["Crop and Environmental Sciences Division, International Rice Research Institute, Los Ban\u0303os, Philippines","Crop and Environmental Sciences Division, International Rice Research Institute, Los Ba\u00f1os, Philippines"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Crop and Environmental Sciences Division, International Rice Research Institute, Los Ban\u0303os, Philippines","institution_ids":["https://openalex.org/I162210093"]},{"raw_affiliation_string":"Crop and Environmental Sciences Division, International Rice Research Institute, Los Ba\u00f1os, Philippines","institution_ids":["https://openalex.org/I162210093"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5077353489"],"corresponding_institution_ids":["https://openalex.org/I162210093"],"apc_list":{"value":3570,"currency":"USD","value_usd":3570},"apc_paid":null,"fwci":4.4819,"has_fulltext":false,"cited_by_count":64,"citation_normalized_percentile":{"value":0.93742917,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":93,"max":99},"biblio":{"volume":"155","issue":"1","first_page":"61","last_page":"69"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11098","display_name":"Seed Germination and Physiology","score":0.5170999765396118,"subfield":{"id":"https://openalex.org/subfields/1110","display_name":"Plant Science"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},"topics":[{"id":"https://openalex.org/T11098","display_name":"Seed Germination and Physiology","score":0.5170999765396118,"subfield":{"id":"https://openalex.org/subfields/1110","display_name":"Plant Science"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T10774","display_name":"Weed Control and Herbicide Applications","score":0.45579999685287476,"subfield":{"id":"https://openalex.org/subfields/1110","display_name":"Plant Science"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T12058","display_name":"Allelopathy and phytotoxic interactions","score":0.016899999231100082,"subfield":{"id":"https://openalex.org/subfields/1110","display_name":"Plant Science"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/purslane","display_name":"Portulaca oleracea","score":1.0},{"id":"https://openalex.org/keywords/seed-germination","display_name":"seed germination","score":0.7860000133514404},{"id":"https://openalex.org/keywords/seedling-emergence","display_name":"seedling emergence","score":0.9980000257492065},{"id":"https://openalex.org/keywords/weed-ecology","display_name":"weed ecology","score":0.7979999780654907},{"id":"https://openalex.org/keywords/light-dark-regime","display_name":"light/dark regime","score":0.7070000171661377},{"id":"https://openalex.org/keywords/temperature-effects-on-germination","display_name":"temperature effects on germination","score":0.8130000233650208},{"id":"https://openalex.org/keywords/salt-stress","display_name":"salt stress","score":0.7599999904632568},{"id":"https://openalex.org/keywords/osmotic-potential","display_name":"osmotic potential","score":0.9079999923706055},{"id":"https://openalex.org/keywords/soil-ph","display_name":"soil pH","score":0.8029999732971191},{"id":"https://openalex.org/keywords/seed-burial-depth","display_name":"seed burial depth","score":0.9679999947547913},{"id":"https://openalex.org/keywords/rice-residue","display_name":"rice residue","score":0.8529999852180481},{"id":"https://openalex.org/keywords/no-tillage","display_name":"no-tillage","score":0.8339999914169312},{"id":"https://openalex.org/keywords/reduced-tillage","display_name":"reduced tillage","score":0.9660000205039978},{"id":"https://openalex.org/keywords/weed-control","display_name":"weed control","score":0.6430000066757202},{"id":"https://openalex.org/keywords/c4-weeds","display_name":"C4 weeds","score":0.6970000267028809}],"concepts":[{"id":"https://openalex.org/C100701293","wikidata":"https://www.wikidata.org/wiki/Q193838","display_name":"Germination","level":2,"score":0.9208992719650269},{"id":"https://openalex.org/C2780383148","wikidata":"https://www.wikidata.org/wiki/Q159554","display_name":"Portulaca","level":2,"score":0.9017923474311829},{"id":"https://openalex.org/C2776096895","wikidata":"https://www.wikidata.org/wiki/Q1385709","display_name":"Seedling","level":2,"score":0.8563970327377319},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.8256467580795288},{"id":"https://openalex.org/C2775891814","wikidata":"https://www.wikidata.org/wiki/Q101879","display_name":"Weed","level":2,"score":0.6781548261642456},{"id":"https://openalex.org/C6557445","wikidata":"https://www.wikidata.org/wiki/Q173113","display_name":"Agronomy","level":1,"score":0.6094111204147339},{"id":"https://openalex.org/C16397148","wikidata":"https://www.wikidata.org/wiki/Q878333","display_name":"Tillage","level":2,"score":0.4513378441333771},{"id":"https://openalex.org/C144027150","wikidata":"https://www.wikidata.org/wiki/Q48803","display_name":"Horticulture","level":1,"score":0.3927002251148224}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1111/j.1744-7348.2009.00320.x","doi":"https://doi.org/10.1111/j.1744-7348.2009.00320.x","is_oa":false,"landing_page_url":"https://doi.org/10.1111/j.1744-7348.2009.00320.x","pdf_url":null,"source":{"id":"https://openalex.org/S71879176","display_name":"Annals of Applied Biology","issn_l":"0003-4746","issn":["0003-4746","1744-7348"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-c","jufo-1","norway-1","poland-100","russia-white-list-1"],"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Annals of Applied Biology","raw_type":"journal-article"},{"id":"pmh:oai:cgspace.cgiar.org:10568/166153","doi":null,"is_oa":false,"landing_page_url":"https://hdl.handle.net/10568/166153","pdf_url":null,"source":{"id":"https://openalex.org/S4306402055","display_name":"CGSPace A Repository of Agricultural Research Outputs (Consultative Group for International Agricultural Research)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1286583668","host_organization_name":"CGIAR","host_organization_lineage":["https://openalex.org/I1286583668"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Chauhan, B.S.; Johnson, D.E. 2009. Seed germination ecology of Portulaca oleracea L.: an important weed of rice and upland crops. Annals of Applied Biology, Volume 155 no. 1 p. 61-69","raw_type":"Journal Article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/2","display_name":"Zero hunger","score":0.875},{"id":"https://metadata.un.org/sdg/15","display_name":"Life on land","score":0.4390000104904175}],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":35,"referenced_works":["https://openalex.org/W591016831","https://openalex.org/W1485721794","https://openalex.org/W1541965230","https://openalex.org/W1551830326","https://openalex.org/W1964249538","https://openalex.org/W1964479264","https://openalex.org/W1979143529","https://openalex.org/W1980032494","https://openalex.org/W1981653471","https://openalex.org/W1992997775","https://openalex.org/W2011661612","https://openalex.org/W2028836169","https://openalex.org/W2029522139","https://openalex.org/W2033899770","https://openalex.org/W2037480881","https://openalex.org/W2047224820","https://openalex.org/W2056149745","https://openalex.org/W2079332747","https://openalex.org/W2090175645","https://openalex.org/W2091332538","https://openalex.org/W2107265366","https://openalex.org/W2133989761","https://openalex.org/W2156085609","https://openalex.org/W2172523456","https://openalex.org/W2172625657","https://openalex.org/W2272897489","https://openalex.org/W2279742145","https://openalex.org/W2296505510","https://openalex.org/W2486380187","https://openalex.org/W2512495284","https://openalex.org/W2572567838","https://openalex.org/W2946180402","https://openalex.org/W2947643617","https://openalex.org/W4229500477","https://openalex.org/W4285719527"],"related_works":["https://openalex.org/W3159782799","https://openalex.org/W2378848935","https://openalex.org/W2628055596","https://openalex.org/W2976404240","https://openalex.org/W1980032494","https://openalex.org/W2054734223","https://openalex.org/W2120415692","https://openalex.org/W2107906189","https://openalex.org/W2187053942","https://openalex.org/W2883866357"],"abstract_inverted_index":{"Abstract":[0],"Portulaca":[1],"oleracea,":[2],"a":[3,10,207,221,236],"C4":[4],"species,":[5],"is":[6],"reported":[7],"to":[8,30,105,125,174,181,183,218,234,248],"be":[9,235],"serious":[11],"weed":[12,238],"in":[13,16,22,50,148,239],"45":[14],"crops":[15],"81":[17],"countries.":[18],"Experiments":[19],"were":[20,165],"conducted":[21],"the":[23,25,28,32,47,51,60,71,112,128,137,154,169,175,188,229,240,244],"laboratory,":[24,48],"screenhouse":[26],"and":[27,40,55,65,80,87,161,214,243],"field":[29],"determine":[31],"influence":[33],"of":[34,43,93,108,111,156,171,192,210,216,228],"environmental":[35],"factors":[36,230],"on":[37,136],"seed":[38,145,212],"germination":[39,49,75,110,130],"seedling":[41,162,190],"emergence":[42,141,160,191],"P.":[44,193,232],"oleracea.":[45],"In":[46,70,91,127,187],"dark":[52],"was":[53,56,76,115,131,195],"low":[54,211],"not":[57,116],"influenced":[58,117],"by":[59,118,168],"tested":[61],"temperatures":[62],"(35/25\u00b0C,":[63],"30/20\u00b0C":[64,84],"25/15\u00b0C":[66,79],"alternating":[67],"day/night":[68],"temperatures).":[69],"light/dark":[72],"regime,":[73],"however,":[74],"lower":[77],"at":[78,83,178],"35/25\u00b0C":[81],"than":[82,202],"(70%,":[85],"75%":[86],"81%":[88],"germination,":[89],"respectively).":[90],"conditions":[92],"106":[94],"mM":[95],"sodium":[96],"chloride":[97],"or":[98],"\u22120.34":[99],"MPa":[100],"osmotic":[101],"potential,":[102],"seeds":[103,134,217],"germinated":[104],"only":[106],"50%":[107],"maximum":[109],"control.":[113],"Germination":[114],"buffered":[119],"pH":[120],"solutions":[121],"ranging":[122],"from":[123,153],"5":[124],"9.":[126],"screenhouse,":[129],"greatest":[132],"for":[133],"placed":[135],"soil":[138,176],"surface,":[139],"but":[140],"declined":[142],"with":[143,220],"increasing":[144],"burial":[146,213],"depth":[147,155],"soil;":[149],"no":[150],"seedlings":[151],"emerged":[152],"2":[157],"cm.":[158],"Seedling":[159],"dry":[163],"matter":[164],"markedly":[166],"reduced":[167],"addition":[170],"rice":[172],"residue":[173],"surface":[177],"rates":[179],"equivalent":[180],"4":[182],"6":[184],"t":[185],"ha\u22121.":[186],"field,":[189],"oleracea":[194,233],"greater":[196],"under":[197,203],"zero":[198],"till":[199],"(ZT)":[200],"(17\u201320%)":[201],"minimum":[204],"tillage":[205],"(6\u201310%),":[206],"likely":[208],"reflection":[209],"exposure":[215],"light":[219],"ZT":[222],"system.":[223],"This":[224],"study":[225],"identifies":[226],"some":[227],"enabling":[231],"widespread":[237],"humid":[241],"tropics,":[242],"information":[245],"could":[246],"contribute":[247],"improved":[249],"control":[250],"strategies.":[251]},"counts_by_year":[{"year":2026,"cited_by_count":2},{"year":2025,"cited_by_count":8},{"year":2024,"cited_by_count":4},{"year":2023,"cited_by_count":5},{"year":2022,"cited_by_count":2},{"year":2021,"cited_by_count":4},{"year":2020,"cited_by_count":3},{"year":2019,"cited_by_count":6},{"year":2018,"cited_by_count":3},{"year":2017,"cited_by_count":5},{"year":2016,"cited_by_count":2},{"year":2015,"cited_by_count":4},{"year":2014,"cited_by_count":3},{"year":2013,"cited_by_count":2},{"year":2012,"cited_by_count":4}],"updated_date":"2026-11-08T12:12:28.789561","created_date":"2016-06-24T00:00:00"}
