Tsire-tsire
From Wikipedia, the free encyclopedia
A cikin ilimin shuke-shuke, iri shine shuka da kuma ajiyar abinci wanda aka rufe a cikin wani kariya na waje wanda ake kira gashin iri (testa). Gabaɗaya, kalmar "tsuntsu" tana nufin duk abin da za a iya shuka, wanda zai iya haɗawa da iri da husk ko tuber. Tsuntsaye sune samfurin kwai mai nunawa, bayan an yi amfani da kwayar halitta ta hanyar pollen" id="mwGQ" rel="mw:WikiLink" title="Pollen">maniyyi daga pollen, ta samar da zygote. Kwayar halitta a cikin iri tana tasowa daga zygote kuma tana girma a cikin uwar shuka zuwa wani girman kafin a dakatar da girma.
Samun iri shine ma'anar tsarin haifuwa a cikin tsire-tsire (spermatophytes). Sauran tsire-tsire kamar hanta-linkid="26" href="./Fern" id="mwHw" rel="mw:WikiLink" title="Fern">ferns, mosses da liverworts, ba su da tsaba kuma suna amfani da hanyoyin da ke dogara da ruwa don yada kansu. Tsire-tsire na tsaba yanzu sun mamaye wuraren halitta a ƙasa, daga gandun daji zuwa wuraren ciyawa a yanayin zafi da sanyi.
A cikin tsire-tsire masu fure, ovary ya girma cikin 'Ya'yan itace wanda ke dauke da iri kuma yana aiki don yada shi. Yawancin gine-gine da ake kira "tsuntsaye" a zahiri 'ya'yan itace ne masu bushe. Ana sayar da tsaba na sunflower a wasu lokuta don kasuwanci yayin da har yanzu an rufe shi a cikin bango mai wuya na 'ya'yan itace, wanda dole ne a raba shi a buɗe don isa ga tsaba. Ƙungiyoyin shuke-shuke daban-daban suna da wasu gyare-gyare, abin da ake kira 'Ya'yan itace na dutse (kamar peach) suna da nau'in' ya'yan itacen da aka haɗu da kuma kewaye da ainihin iri. Nuts sune 'ya'yan itace guda ɗaya, 'ya'ya mai wuya na wasu tsire-tsire tare da iri mara kyau, kamar ƙwaya ko hazelnut.