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Video: Dab tsi yog aster yellows hauv cov nroj tsuag?
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2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Aster daj yog ib tug mob, systemic cog kab mob tshwm sim los ntawm cov kab mob zoo li cov kab mob hu ua phytoplasma. Cov aster daj phytoplasma (AYP) cuam tshuam rau 300 hom tsiaj hauv 38 tsev neeg ntawm cov nplooj ntoo ntsuab nroj tsuag , feem ntau hauv aster tsev neeg, nrog rau cov qoob loo tseem ceeb xws li nplej thiab barley.
Ib yam nkaus, koj yuav kho tus aster daj li cas?
Tsis muaj kev kho mob yog muaj los cawm tsob ntoo uas kis nrog aster daj . Aster yellows yog kev tswj hwm zoo tshaj plaws los ntawm kev tshem cov nroj tsuag uas muaj kab mob tawm ntawm lub vaj kom txo qis kev sib kis. Kev tswj cov kab vector tsis yog feem ntau ua tau hauv vaj hauv tsev.
koj saib xyuas asters li cas? Asters nyiam kev nyab xeeb nrog lub caij ntuj sov, noo noo-tshwj xeeb tshaj yog txias hmo ntuj. Hauv cov huab cua sov, cog asters nyob rau thaj chaw uas zam kev tshav ntuj thaum nruab hnub. Xaiv qhov chaw uas muaj hnub ci ib nrab. Av yuav tsum moist tab sis zoo-drained, thiab loamy.
Xav txog qhov no, tus aster leafhopper tau kis tus aster daj li cas?
Aster daj feem ntau kis los ntawm leafhoppers . Thaum a nplooj ntoos pub rau ntawm tsob ntoo kis mob nrog aster yellows nws yuav " tau kis kab mob "nrog phytoplasma thiab tseem nyob tau kis kab mob thoob plaws nws lub neej. Phytoplasma cells sib npaug thiab ua rau kab mob ntawm kab ntawm cov qog qaub ncaug hauv ib mus rau peb lub lis piam.
Tus kab mob Phyllody yog dab tsi?
Phyllody yog qhov txawv txav ntawm floral qhov chaw rau hauv cov nplooj ntoo. Nws feem ntau tshwm sim los ntawm phytoplasma lossis kab mob kis, txawm hais tias nws kuj tseem yuav yog vim ib puag ncig ib puag ncig uas ua rau muaj qhov tsis txaus hauv cov tshuaj hormones cog.
Pom zoo:
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Lateral meristems yog cov faib cov hlwb hauv kev loj hlob theem ob, thiab tsim cov ntaub so ntswg thib ob. Secondary xylem yog ntoo tiag tiag ntawm tsob ntoo, thiab phloem theem ob muab kev thauj qab zib. Cov vascular cambium yog txheej tuab heev ntawm cov cell nruab nrab ntawm xylem thiab phloem
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Oxygen, rau cov nroj tsuag, yog qhov tseem ceeb vim tias nws ua rau cov txheej txheem ntawm kev ua pa zoo dua (hu ua aerobic respiration). Cov cell cog tau ua pa tas li. Thaum nplooj tau ci, cov nroj tsuag tsim lawv tus kheej cov pa
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Raws li rau txhua tus tsiaj, koj lub cev yog tsim los ntawm plaub hom ntaub so ntswg: epidermal, nqaij, paj hlwb, thiab cov ntaub so ntswg. Nroj tsuag, ib yam nkaus, yog tsim los ntawm cov ntaub so ntswg, tab sis tsis yog qhov xav tsis thoob, lawv txoj kev ua neej sib txawv heev los ntawm ntau hom ntaub so ntswg. Tag nrho peb hom kev cog qoob loo tau pom nyob hauv cov ntaub so ntswg feem ntau
Dab tsi yog vascularization hauv cov nroj tsuag?
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Vascularization hais txog txheej txheem ntawm kev tsim cov vascular cov ntaub so ntswg ntawm xylem thiab phloem. Lub meristem uas ua rau cov ntaub so ntswg vascular hu ua cambium. Thaum lub sij hawm thawj qhov kev loj hlob ntawm cov nroj tsuag, lub procambium tsim thawj zaug uas tom qab ntawd tsim cov xylem raws li phloem
Lub luag haujlwm ntawm phloem cov ntaub so ntswg nyob rau hauv cov nroj tsuag thauj system yog dab tsi?
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Phloem yog cov ntaub so ntswg ua lub luag haujlwm rau kev thauj cov suab thaj los ntawm cov ntaub so ntswg (ex. photosynthetic nplooj hlwb) mus rau hauv cov ntaub so ntswg (ex. non-photosynthetic cag hlwb los yog tsim paj). Lwm cov molecules xws li cov proteins thiab mRNAs kuj tau thauj thoob plaws hauv cov nroj tsuag ntawm phloem