2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Apomixis hauv Citrus hu ua polyembryony vim ntau lub embryos somatic tau tsim ib txhij nrog zygote embryo hauv cov noob [78].
Vim li cas qee cov noob citrus hu ua polyembryonic lawv tsim li cas?
Qee cov noob citrus hu ua Polyembryonic vim lawv muaj ntau tshaj ib embryos. Qhov tshwm sim no hu ua polyembryony. Hauv citrus ib lub embryo loj hlob ib txwm los ntawm kev sib deev thiab lwm yam embryos ntxiv yog tsim los ntawm cov hlwb ntawm nucellus lossis integument apomictically.
Yuav ua li cas yog cov txiv hmab txiv ntoo polyembryonic?
Ntawm horticultural qoob loo, citrus, txiv nkhaus taw, jamun, rose apple, almond, txiv duaj, dos, thiab lwm yam yog polyembryonic nyob rau hauv xwm. Txawm li cas los xij, citrus yog pawg tseem ceeb tshaj plaws uas nthuav tawm cov yam ntxwv no. Tsuas yog Citrus grandis (pummelo), C. latifolia (Tahiti txiv qaub) thiab Citrus medica (Citron) tag nrho lwm hom yog polyembryonic.
Puas citrus yog polyembryony?
Ntau lub citrus cultivars muaj qhov polyembryony tus cwj pwm uas tsim muaj ntau lub nucellar embryos nrog rau ib qho zygotic embryo hauv ib tus neeg cov noob los ntawm sporophytic apomixis. Qhov tshwj xeeb botanical zoo no cuam tshuam kev yug me nyuam citrus los ntawm kev sib txuas caj ces thiab cuam tshuam rau kev yug me nyuam thiab tus nqi.
Cov noob polyembryonic tsim li cas?
Polyembryony yog qhov tshwm sim ntawm ob lossis ntau duaembryos tsim los ntawm ib lub qe fertilized. Vim lub embryos tshwm sim los ntawm tib lub qe, cov embryos zoo tib yam rau ib leeg, tab sis muaj ntau yam ntawm cov niam txiv. … Polyembryony tshwm sim tsis tu ncua nyob rau hauv ntau hom vertebrates, invertebrates, thiab nroj tsuag.
Pom zoo:
Pob noob noob noob noob nom noob tswv los?
Cov noob noob hnav tuaj yeem tshwm sim hauv Asia lossis East Africa, thiab cov neeg Iyiv thaum ub tau paub tias tau siv cov noob hauv av ua hmoov nplej. Cov noob tau siv los ntawm Suav tsawg kawg yog 5,000 xyoo dhau los, thiab ntau pua xyoo lawv tau hlawv cov roj los ua cov tshuaj tsw qab rau cov ntawv suav zoo tshaj plaws.
Ntawm txoj kev kawm ntawm noob caj noob ces?
Genetics yog kev tshawb fawb txog cov noob thiab noob caj noob ces-ntawm qhov zoo lossis qhov zoo li cas tau dhau los ntawm niam txiv mus rau cov xeeb ntxwv vim qhov hloov pauv hauv DNA ib ntus. … Txhua yam ntawm cov kab mob caj ces, nrog rau nws cov noob caj noob ces thiab lwm yam khoom uas tswj cov kev ua ntawm cov noob, yog nws cov genome.
Vim li cas qee cov kws tshawb fawb tau sib cav tias venus ntawm willendorf yuav tsum tau hloov lub npe 'poj niam' ntawm willendorf?
Txawm li cas los xij, cov kws tshawb fawb keeb kwm niaj hnub no tau ua thawj coj kev sib tw los hloov lub npe tus pej thuam 'Tus Poj Niam ntawm Willendorf', tsis yog 'Venus of Willendorf', vim qhov laj thawj tom qab lub npe menyuam yaus yog ib tus neeg nyiam sib deev.
Puas muaj cov ntawv tshaj tawm ntawm cov noob caj noob ces?
Muaj cov ntawv hauv Chivkeeb koj tuaj yeem tswj tautab sis koj tsis tso cai caij lawv. Koj puas tuaj yeem siv daim ntawv tshaj tawm ntawm Chiv Keeb 2? Qhov no sleek, hi-tek exo-cov armor yuav tsum tiv thaiv koj nyob rau hauv ntau yam xwm txheej uas ua rau tuag taus - thiab qhov zoo tshaj plaws, ntawm Chiv Keeb Tshooj 2, cov khaub ncaws no muaj qhov txwv tsis pub dav hlau dav hlau tsis tas yuav tsum muaj Element - thiab Cov ntawv tshaj tawm kuj tau txais kev txhawb siab
Vim li cas cov noob yuav tsum tau muab tshem tawm ntawm cov paj rwb?
Teb: Thaum paj rwb bolls tau sau, cov noob raug tshem tawm ntawm fiber ntau los ntawm txoj kev ginning. … Cov noob raug muab tshem tawm vim ob qho laj thawj: Koj tsis tuaj yeem tig paj rwb rau hauv cov xov paj yog tias tseem muaj cov noob tseem nyob hauv paj rwb.
