Biologiya

Gul gufta navdai kutohu shakldigarkardaro menomand, ki baroi afzoishi tukhmi khizmat mekunad. Odatan poyai asosi yo pakhlui bo gul ba itmom merasad. Har gul az mugjagul inkishof meyobad. Qismi poya- gii gul agar gulpoya va gulbandro darbar girad, kosabarg, gulbarg, gardbarg va tukhmdon az barghoi shakldigarkarda ba vujud omadaand. Ba …

Rastanihoe mavjudand, ki guli onho yaktoi (toqa) dar nugi nav- dayu poya yo dar bari bargho inkishof meyoband. Onho rastanihoi toqguland. Gulhoi digar rastaniho boshand dar tudagulho gun omadaand. Tudagul (khushagul) majmui gulhoest, ki bo tartibu qoidai muay- yan ba hamdigar nazdik yo dar bari yakdigar joy girifta, ba on …

Baroi faoliyati mutadili hayotiash rastani bo reshaash ob va moddahoi gayriorganikiro jabbida megirad. Sipas, in moddaho tufayli boftaho va bandchahoi guzaronanda ba tamomi uzvhoi rastani pahn meshavand. Baroi donistani on ki harakati ob va moddahoi madani dar rastani chi tavr surat megirad, 2-3 ruz pesh navdai navrasi yagon darakhtro ba …

Baze rastanihoi bisyorsolai alafi guyo “anborhoi” makhsusi zerizamini dorand. Dar fasli tiramoh uzvhoi ruizaminii in rastaniho az sabzish boz monda, khushk meshavand. Resha va navdai shakldigarkardai onho dar zeri khok boqi memonad. Onho bo sababi vazifahoi nav paydo kardanashon ba uzvhoi ruizaminii muqarrari monand nestand. Mahz dar chunin navdahoi shakldigarkarda …

Afzoishi pushidatukhmon yo rastanikhoi guldor bo rohi jinsi va nashvi amali megardad. Afzoishi nashvii rastanihoi guldor dar tabiat vase pahngar- dida buda, khususan odamon onro baroi afzoish dodani ziroathoi kishovarzi va rastanihoi oroishi purmahsul istifoda mebarand. Ba in maqsad chunin uzvhoi nashvi — resha, poya va bargro vase is- tifoda …

Bisyor rastaniho dar tabiat bo resha va barg afzoish meyoband. Dar kishovarzi ham onhoro bo qalamchai resha va barg ziyod mekunand. Hususan, tamashki bogi, nastaran (khuch), baze navhoi seb va ras- tanihoi oroishiro az qalamcharesha ziyod mekunand. Qalamcharesha juzi reshaest, ki 15-25 sm darozi dorad. Bo vositai qalamcharesha faqat on …

Qadkashii poya, shokharoni: Poya juzi tarkibii navda meboshad. Vay ba bolo qad afrokhta, barghoro ba ravshani mebarorad. Ba tufayli poya resha bo bargu mugjai rastaniho aloqai zich paydo mekupad. Dar poya metavonad moddahoi gizoi zakhira shavand. Poyai rastaniho alafi va chubi meshavad. Poyaho az rui khususiyathoi biologiashon gunogun buda, onhoro …

Juzhoi burishi kundalangi yagon shokhcha, gula yo kundai darakhtero, ki ba nazdiki buridaand, az nazar meguzaronem. Dar sathi juzi burish yo arrashudai gula se qabat farq karda meshavad. Qabati berunii siyohtobu nisbatan tunukro pustlokh meguyand. Vay az boftahoi gunogune, ki qabatqabat joygirand, iborat ast. Qabati sakhte, ki az hama serbar …

Ba tufayli boavj taqsim shudani hujayrahoi kambiy tanai (poyai) buttavu darakhton va poyai giyohhoi bisyorsola gafs meshavad. Buluthoi “kukhansolu” azimjussae malumand, ki davrodavri tanai onho ba 10 m merasad. YO in ki kundai yak evkalipti pir chunon gafs bud, ki dar rui on maydonchai raqs sokhta shudaast. Poya dar ruzhoi …

Dar ravishi ba omilhoi muhiti beruna mutobiqshavii rastaniho, dar baze holatho, tagyiryobii shakli bargi rastaniho mushohida karda meshavad. In barghoi shakldigarkarda vazifahoi digarro niz ijro mekunand, ki on ba barghoi asosi khos nest. Masalan, baze barghoi zirk (zilol) ba khor tabdil yoftaand. Onho nazar ba barghoi muqarrari obro kam bukhor …