Distribution patterns of segetal weeds of cereal crops in Tajikistan

2015
journal article
article
dc.abstract.enUsing the literature data and field research conducted in 2009-2013 the distribution patterns, habitat conditions, phytogeographical characterisation and endangerment of weeds occurring in cereal crops in Tajikistan were analysed. We found out that Tajik weed flora of cereal crops counts 686 taxa. The most species rich families include Asteraceae, Poaceae and Fabaceae. The highest number of cereal weeds were noted in large river valleys of Syr-Daria, Amu-Daria and their tributaries in south-western and northern Tajikistan. This subregions have the warmest climate conditions and extensive arable lands. The greatest weed species richness was observed in submontane and montane elevations between approx. 700 and 1,900 m a.s.l. Cereal weeds occur frequently outside segetal communities in Tajikistan. They were noted usually in screes, wastelands, xerothermophilous grasslands, river gravel beds and in steppes habitats. The assessment of threat status reveals that ca. 33% of total cereal weed flora in Tajikistan are disappearing or occur very rarely. According to the chorological data we find that in the cereals of Tajikistan, 35 endemic and 14 subendemic species occur. The most numerous chorological elements of threatened weed flora of Tajikistan are Irano-Turanian (55%), pluriregional (16%), cosmopolitan (14,5%), Mediterranean (9%) and Eurosiberian (5%) species. Further research is suggested to explore the distribution patterns of all weed species in Tajikistan as it should be useful for economy and effectiveness of crop production as well as conservation of most valuable species.pl
dc.affiliationWydział Biologii i Nauk o Ziemi : Instytut Botanikipl
dc.contributor.authorNowak, Arkadiuszpl
dc.contributor.authorNowak, Sylwiapl
dc.contributor.authorNobis, Marcin - 130984 pl
dc.contributor.authorNobis, Agnieszka - 130983 pl
dc.date.accession2015.10.05pl
dc.date.accessioned2016-01-12T08:48:25Z
dc.date.available2016-01-12T08:48:25Z
dc.date.issued2015pl
dc.date.openaccess0
dc.description.accesstimew momencie opublikowania
dc.description.number4pl
dc.description.physical1415-1422pl
dc.description.versionostateczna wersja wydawcy
dc.description.volume47pl
dc.identifier.eissn2070-3368pl
dc.identifier.issn0556-3321pl
dc.identifier.urihttp://ruj.uj.edu.pl/xmlui/handle/item/19232
dc.identifier.weblinkhttp://www.pakbs.org/pjbot/PDFs/47(4)/27.pdfpl
dc.languageengpl
dc.language.containerengpl
dc.rightsDodaję tylko opis bibliograficzny*
dc.rights.licenceOTHER
dc.rights.uri*
dc.share.typeotwarte czasopismo
dc.subject.enchorologypl
dc.subject.enagroecosystemspl
dc.subject.enbiodiversitypl
dc.subject.enMiddle Asiapl
dc.subject.enaltitudinal amplitudepl
dc.subtypeArticlepl
dc.titleDistribution patterns of segetal weeds of cereal crops in Tajikistanpl
dc.title.journalPakistan Journal of Botanypl
dc.typeJournalArticlepl
dspace.entity.typePublication
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