Dioecious nroj tsuag: nta thiab nthuav qhov tseeb

Cov txheej txheem:

Dioecious nroj tsuag: nta thiab nthuav qhov tseeb
Dioecious nroj tsuag: nta thiab nthuav qhov tseeb
Anonim

Cov nroj tsuag uas muaj cov neeg sawv cev sib txawv ntawm poj niam txiv neej - txiv neej thiab poj niam - yog cov nroj tsuag dioecious. Piv txwv ntawm cov nroj tsuag xws li nettle, poplar, mulberry ntoo (mulberry), asparagus, spinach, willow, hemp, pistachio, podocarpus thiab lwm yam. Tab sis qhov no tsis yog ib daim ntawv teev tag nrho.

cov nroj tsuag dioecious
cov nroj tsuag dioecious

Thiab txhua cov nroj tsuag dioecious muaj paj, tab sis qee qhov yuav muaj "txiv neej" paj thiab lwm tus yuav muaj "poj niam" paj. Xws li cov neeg sawv cev ntawm flora yog tus cwj pwm los ntawm kev sib tw-pollination. Monoecious thiab dioecious nroj tsuag txawv nyob rau hauv uas yav tas los muaj "txiv neej" thiab "poj niam" paj ntawm tib tsob nroj.

Pollination of dioecious nroj tsuag

Dioecious nroj tsuag nyob rau hauv cov nqe lus ntawm evolutionary txoj kev loj hlob yog suav hais tias zoo tshaj plaws. Lawv tsis muaj peev xwm ua rau lawv tus kheej pollination, thiab qhov xwm txheej no ua rau muaj zog ntawm hom.

Rau qee tsob ntoo txiv ntoo, ob leeg poj niam txiv neej yog qhov tseem ceeb. Nyob rau hauv tus txheej txheem ntawm fertilization thiab zus tau tej cov noob thiab txiv hmab txiv ntoo, paj ntoos ntawm stamens txiv neej paj yog coj los ntawm stigmas ntawm poj niam sawv daws yuav. Tsuas yog nyob rau hauv rooj plaub no, koj tuaj yeem tau txais cov txiv hmab txiv ntoo. Tab sis qhov no tsis txhais hais tias rau txhua "poj niam" cog koj yuav tsum muaj ib tsob ntoo.opposite sex.

Ib tug txiv neej yuav ua hauj lwm kom pollinate ntau yam poj niam nroj tsuag. Kwv yees tus nqi sib txawv nyob ntawm seb hom nroj tsuag. Piv txwv li, kom fertilize tag nrho cov hav zoov ntawm hnub xibtes, tsuas yog ob peb tsob ntoo "txiv neej" cog. Ib tug txiv neej hnub xibtes tsob ntoo yog txaus kom pollinate 40-50 xibtes ntawm opposite pw ua niam txiv. Feem ntau, ib ceg ntawm tus txiv neej tsob ntoo yog grafted rau poj niam ntoo kom ntseeg tau tias pollination tiav.

Kev sib txawv ntawm cov neeg sawv cev ntawm cov poj niam sib txawv ntawm tib hom

Feem ntau nws yog qhov pib nyuaj los txiav txim siab seb lub tsev twg yog cov nroj tsuag. Tab sis nws tsis yog qhov tsis paub tseeb thaum lub sijhawm los txog rau thawj zaug sau - cov txiv hmab txiv ntoo yuav nyob ntawm tus poj niam. Nyob rau tib lub sijhawm, qhov sib txawv ntawm cov qauv ntawm cov txiv neej thiab poj niam paj yog pom tau. Cov txiv neej paj muaj me me los yog tsis muaj stigma, thaum poj niam paj yuav tsis muaj stamens. Cov stamens nyob rau hauv cov poj niam paj tsim yuav luag tsis muaj paj ntoos, thaum lub stamens ntawm txiv neej paj yog abundantly dotted nrog paj ntoos.

Kev siv tswv yim ntawm kev paub txog cov nroj tsuag dioecious

Rau lub hom phiaj siv tau, nws yog ib qho tseem ceeb tsis yog tsuas yog paub tias cov nroj tsuag twg yog dioecious, tab sis kuj yuav tsum paub qhov txawv ntawm cov poj niam txiv neej ntawm tib hom. Piv txwv li, yog tias muaj tsob ntoo mulberry ntawm qhov chaw uas tsis txi txiv, ces feem ntau nws yog txiv neej ntoo. Thiab nyob rau hauv thiaj li yuav txaus siab rau cua thiab noj qab haus huv berries, koj yuav tsum tau cog ob peb rau nws - ib tug poj niam ntoo. Los yog tsawg kawg graft ib ceg ntawm tus poj niam tsob ntoo. Thiab vice versa: graft ib tug txiv neej ceg rau hauv ib tug poj niam tsob ntoo.

cov nroj tsuag dioeciouspiv txwv
cov nroj tsuag dioeciouspiv txwv

Tam sim no, yog tias koj yuav tsum tau yuav tsob ntoo mulberry rau ib qho chaw ntawm tus kheej nkaus xwb rau kev kho kom zoo nkauj, yog li koj tsis tas yuav tshem tawm cov txiv hmab txiv ntoo overripe uas tau poob rau hauv av, nws yog qhov zoo dua los xaiv txiv neej tsob ntoo - nws muaj ib tug zoo nkauj lush crown, tab sis nws yuav tsis txi txiv.

dab tsi nroj tsuag yog dioecious
dab tsi nroj tsuag yog dioecious

Dioecious nroj tsuag, tshwj xeeb tshaj yog lawv cov txiv neej, tsim cov paj ntoos loj heev. Qhov xwm txheej no muaj cov lus piav qhia yooj yim thiab muaj txiaj ntsig: tus poj niam tsob ntoo yuav tsis nyob ze, yog li yuav tsum muaj ntau cov paj ntoos kom nws ncav cuag nws lub hom phiaj. Txiv neej ntoo tsim cov paj ntoos ntau dua, cov khoom muaj lub teeb heev thiab zoo li "mus ncig" ntawm huab cua tam sim no yooj yim.

Figs yog tsob nroj tshwj xeeb dioecious

Figs, tseem hu ua figs lossis figs, yog ib qho ntawm cov neeg sawv cev xav paub tshaj plaws ntawm dioecious. Nws suav hais tias yog tsob ntoo hlob tshaj plaws. Tseem muaj ib tug hais txog tsob txiv fuabtais hauv phau Vajlugkub.

monoecious thiab dioecious nroj tsuag
monoecious thiab dioecious nroj tsuag

tsob txiv ntoo tsis muaj paj zoo nkauj - txiv duaj paj me me thiab tsis pom kev. Tab sis qhov tsis zoo no yog ntau tshaj li kev them nyiaj los ntawm cov kua txiv hmab txiv ntoo thiab zib ntab-tasting txiv hmab txiv ntoo. Muaj tseeb tiag, tsuas yog poj niam cov nroj tsuag dais txiv hmab txiv ntoo. Yog li ntawd, ib tsob txiv ntoo uas loj hlob los ntawm cov noob yuav tig mus ua, raws li cov neeg hais tias, ib lub paj khoob, uas yog, txiv neej tsob ntoo. Tab sis yog tsis muaj nws, yuav tsis muaj txiv hmab txiv ntoo ntawm poj niam ib yam nkaus.

Pollination of figs is a very interesting topic for a သီးခြား kawm. Qhov tseeb yog tias fig pajpollinated tsuas yog los ntawm blastophage wasps. Ib tug wingless txiv neej Wasp tos ib tug poj niam nyob rau hauv ib tug txiv neej paj. Ib tug fertilized blastophage poj niam sau paj paj los ntawm txiv neej paj ntawm nws lub cev, tawm ntawm nws, thiab hloov paj ntoos mus rau poj niam paj hauv kev tshawb nrhiav cov txiv neej tshiab inflorescences.

Ntiaj teb qhov tseeb

Cov kws tshawb fawb tau pom tias cov nroj tsuag dioecious ua rau muaj kev phom sij loj rau kev noj qab haus huv ntawm tus neeg uas muaj kev fab tshuaj. Ntawm lawv, allergenic nroj tsuag muaj ntau dua. Thiab cov ntawm lawv uas tau txais lub koob npe nrov ntawm cov muaj zog tshaj allergens kuj dioecious. Tab sis thaum xaiv cov nroj tsuag rau kev tsim kho kom zoo nkauj, koj tsis tuaj yeem tsis lees txais cov nroj tsuag dioecious, koj tsuas yog xav tau kev nyiam rau cov nroj tsuag poj niam - lawv tsis tsim cov paj ntoo ntau npaum li txiv neej cov nroj tsuag, uas txhais tau hais tias lawv tsis tshua muaj txiaj ntsig rau tib neeg.

Raws li qee yam tsis zoo, cov nroj tsuag dioecious, xws li hemp, tuaj yeem ua monoecious. Hauv qhov no, txiv neej thiab poj niam paj yuav nthuav tawm ntawm tib tsob ntoo.

Nyob rau hauv ancient sij hawm, kev paub txog dab tsi dioecious nroj tsuag yog dav siv. Piv txwv ntawm qhov no tuaj yeem pom txawm nyob rau hauv keeb kwm ntawm kev sib cav tub rog. Piv txwv li, thaum lub sij hawm raids nyob rau txawv teb chaws thaj chaw, cov tub rog rhuav tshem cov txiv neej nyob rau hauv lub hnub groves - qhov no yooj yim npaum li cas tshaj txiav tag nrho cov cog, tab sis nws lav tsis tau sau thiab yuav ua rau muaj kev puas tsuaj loj nyiaj txiag rau lub xeev.

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