Nyob rau hauv cov qoob loo cog qoob loo xaiv siv nyob rau hauv?

Cov txheej txheem:

Nyob rau hauv cov qoob loo cog qoob loo xaiv siv nyob rau hauv?
Nyob rau hauv cov qoob loo cog qoob loo xaiv siv nyob rau hauv?

Video: Nyob rau hauv cov qoob loo cog qoob loo xaiv siv nyob rau hauv?

Video: Nyob rau hauv cov qoob loo cog qoob loo xaiv siv nyob rau hauv?
Video: Tshuaj theem vim li cas thiaj tau nqi ?/ Siv kho mob dab tsi?/paris polyphylla use for? 2024, Hlis ntuj nqeg
Anonim

Clonal xaiv yog txoj kev xaiv ntawm kev ntshaw clones los ntawm cov pejxeem sib xyaw ntawm cov qoob loo vegetatively propagated. Nws yog ib txoj hauv kev txhim kho cov qoob loo vegetatively propagated xws li qab zib, txiv tsawb, qos yaj ywm, citrus, txiv nkhaus taw, thiab lwm yam.

Clonal qoob loo yog dab tsi?

Ib lub clone yog pab pawg ntawm cov nroj tsuag uas tsim los ntawm ib leeg los ntawm kev yug menyuam. Yog li cov qoob loo propagated asexually muaj coob tus clones, thiab lawv feem ntau hu ua clonal qoob loo. Txhua tus tswv cuab ntawm clone muaj tib lub genotype raws li niam txiv cog. Raws li qhov tshwm sim, lawv zoo ib yam nrog ib leeg hauv genotype.

Yuav ua li cas txawv cov txheej txheem ua haujlwm rau kev txhim kho cov qoob loo clonal?

Dhau li ntawm kev xaiv clonal, interspecific hybridization thiab mutation yug me nyuamkuj yog siv rau kev txhim kho cov qoob loo asexually propagated. Cov txheej txheem no tau ua tiav zoo siv hauv qab zib thiab qos yaj ywm. Interspecific hybridization tau siv dav hauv kev yug me nyuam ntawm cov suab thaj.

Puas yog txoj kev xaiv siv rau kev cog qoob loo hauv cov nroj tsuag?

Clonal xaiv yog pom nyob rau hauv cov nroj tsuag uas yog propagated asexually. Cov txheej txheem hu ua clonal xaiv, vim hais tias cov hom tsim los ntawm vegetative propagation yog genetically zoo tib yam nrog niam txiv.

Kev xaiv clonal thiab hybridization yog dab tsi?

Clonal qoob loo feem ntau yog txhim kho los ntawm hla ob lossis ntau dua qhov xav tau clones, ua raws los ntawm kev xaiv hauv F1 progeny thiab hauv cov tiam tom ntej clonal. Thaum F1 tau tsim, txoj kev yug me nyuam yog qhov tseem ceeb tib yam li kev xaiv clonal.

Pom zoo: