{"id":69368,"date":"2026-11-09T23:00:01","date_gmt":"2026-11-09T23:00:01","guid":{"rendered":"https:\/\/cp.snarskis.lt\/index.php\/2026\/11\/09\/kodel-ziema-ant-medziu-lieka-sausi-lapai-botanikai-aiskina-marcescencijos-reiskini\/"},"modified":"2026-11-09T23:00:01","modified_gmt":"2026-11-09T23:00:01","slug":"kodel-ziema-ant-medziu-lieka-sausi-lapai-botanikai-aiskina-marcescencijos-reiskini","status":"publish","type":"post","link":"https:\/\/cp.snarskis.lt\/index.php\/2026\/11\/09\/kodel-ziema-ant-medziu-lieka-sausi-lapai-botanikai-aiskina-marcescencijos-reiskini\/","title":{"rendered":"Kod\u0117l \u017eiem\u0105 ant med\u017ei\u0173 lieka sausi lapai? Botanikai ai\u0161kina marcescencijos rei\u0161kin\u012f"},"content":{"rendered":"

Dauguma med\u017ei\u0173 ruden\u012f numeta lapus, kad \u017eiem\u0105 taupyt\u0173 energij\u0105 ir vanden\u012f bei apsisaugot\u0173 nuo \u0161al\u010dio. Ta\u010diau kartais ant \u0161ak\u0173 iki pat pavasario galima pamatyti kaban\u010dius sausus, jau nunykusius lapus.<\/p>\n

\u0160is rei\u0161kinys vadinamas marcescencija. Jis pasirei\u0161kia tada, kai nud\u017ei\u016bv\u0119 lapai nenukrenta ruden\u012f, o ant \u0161ak\u0173 i\u0161lieka per vis\u0105 \u017eiem\u0105 ir galiausiai nukrenta tik pavasar\u012f.<\/p>\n

\u012eprastai prie\u0161 lapams nukrentant medis \u201eatsiima\u201c i\u0161 j\u0173 dal\u012f verting\u0173 med\u017eiag\u0173 ir chlorofil\u0105, sukaupia jas kamiene ir \u0161aknyse. Lap\u0173 atsikratymas svarbus ir d\u0117l to, kad didelis lap\u0173 plotas sulaikyt\u0173 snieg\u0105 bei led\u0105, o \u0161akos gal\u0117t\u0173 l\u016b\u017eti nuo svorio.<\/p>\n

Dar viena prie\u017eastis \u2013 vandens balansas: \u017eiem\u0105, kai dirva \u012f\u0161\u0105la, med\u017eiai beveik negali pasisavinti vandens, o lapai skatint\u0173 garavim\u0105. Visgi kai kuri\u0173 r\u016b\u0161i\u0173 ar atskir\u0173 med\u017ei\u0173 lap\u0173 kritimas v\u0117luoja \u2013 ir b\u016btent tada matome marcescencij\u0105.<\/p>\n

Kas vyksta medyje ruden\u012f ir pavasar\u012f?<\/h2>\n

Lap\u0173 kritimas yra valdomas hormon\u0173. Kai kurioms r\u016b\u0161ims ruden\u012f suma\u017e\u0117j\u0119s auksin\u0173 kiekis ne visada i\u0161kart \u201epaleid\u017eia\u201c lap\u0105 nuo \u0161akel\u0117s \u2013 vadinamoji atskyrimo zona gali nesusiformuoti taip greitai, kaip \u012fprastai.<\/p>\n

Pavasar\u012f, kai medis v\u0117l pradeda aktyviai cirkuliuoti sultimis ir skleistis nauji pumpurai, situacija pasikei\u010dia. Tuomet audiniai ties lapko\u010dio pagrindu galutinai nunyksta arba senus lapus tiesiog i\u0161stumia nauji prieaugiai.<\/p>\n

Kod\u0117l sausi lapai gali b\u016bti naudingi?<\/h2>\n

Marcescencija da\u017eniau pastebima ant jaun\u0173, \u017eemesni\u0173 med\u017ei\u0173. Viena ai\u0161kinam\u0173 prie\u017eas\u010di\u0173 \u2013 apsauga nuo \u017eol\u0117d\u017ei\u0173: sausi lapai yra kieti, menkai maistingi, tod\u0117l ma\u017eiau vilioja gyv\u016bnus, o kartu gali pad\u0117ti apsaugoti pumpurus ir \u016bglius nuo nugrau\u017eimo.<\/p>\n

Manoma, kad kaban\u010di\u0173 lap\u0173 \u201e\u0161ydas\u201c taip pat gali veikti kaip savoti\u0161ka izoliacija, pridengianti \u017eieminius pumpurus. Galiausiai pavasar\u012f nukrit\u0119 lapai tampa paklote \u2013 organine med\u017eiaga, kuri augimo sezono prad\u017eioje gali b\u016bti naudinga dirvo\u017eemiui.<\/p>\n

Kuri\u0173 r\u016b\u0161i\u0173 med\u017eiams tai b\u016bdingiausia?<\/h2>\n

Marcescencija pasitaiko ne vienai med\u017ei\u0173 r\u016b\u0161iai, ta\u010diau ypa\u010d da\u017enai minima \u0105\u017euol\u0173, buk\u0173 ir skrobl\u0173 grup\u0117. Tokiais atvejais sausus lapus ant \u0161ak\u0173 da\u017eniau pamatysite ant jaun\u0173 medeli\u0173 nei ant dideli\u0173, brand\u017ei\u0173 med\u017ei\u0173.<\/p>\n

Nors botanikai \u0161\u012f rei\u0161kin\u012f tyrin\u0117ja toliau, iki \u0161iol ai\u0161ku viena: ant med\u017ei\u0173 per \u017eiem\u0105 u\u017esilik\u0119 sausi lapai \u2013 ne \u201eklaida\u201c, o gamtoje pasitaikanti prisitaikymo forma, kuri skirtingoms r\u016b\u0161ims gali tur\u0117ti skirting\u0105 prasm\u0119.<\/p>\n","protected":false},"excerpt":{"rendered":"

Kai kurie med\u017eiai \u017eiem\u0105 lap\u0173 nenusikrato iki pavasario \u2013 \u0161is marcescencijos rei\u0161kinys siejamas su hormonais ir apsauga nuo \u017eol\u0117d\u017ei\u0173.<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[47885],"tags":[8096,20041,48286,54724,54725,15092,48285],"miestas":[],"class_list":["post-69368","post","type-post","status-publish","format-standard","hentry","category-gyvenimo-budas","tag-azuolai","tag-botanika","tag-bukai","tag-lapu-kritimas","tag-marcescencija","tag-medziai","tag-skroblai"],"acf":[],"_links":{"self":[{"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/posts\/69368","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/comments?post=69368"}],"version-history":[{"count":0,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/posts\/69368\/revisions"}],"wp:attachment":[{"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/media?parent=69368"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/categories?post=69368"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/tags?post=69368"},{"taxonomy":"miestas","embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/miestas?post=69368"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}