Izboljševanje sposobnosti moških staršev z giberilinsko kislino za pospeševanje navskrižnega križanja citoplazmatsko moško sterilnih linij riža

Hassan HAMAD, Elsayed GEWAILY, Adel GHONEIM, Mohamed SHEHAB, Neama EL-KHOLLY

Povzetek


Preučevan je bil učinek dodajanja giberilinske kisline (GA3) kot obravnavanja pred cvetenjem na moškega starša ‘Giza 178’ (R) in vpliv razmerja med moškimi (R) in ženskimi rastlinami (A) (2R:10A, 2R:12A, 2R:14A in 2R:16A) za dve citoplazmatsko moško sterilni liniji (CMS), ‘IR69625’ in ‘G46’, na pridelek semena hibridnega riža. Raziskava je potrdila razlike v lastnostih navzkrižnega križanja in pridelku zrnja dveh CMS linij (IR69625A in G46A) pri uporabi štirih koncentracij GA3, uporabljenih dvakrat, pri 15-20 % in 35-40 % latenju. CMS linije so bile na podploskvah, razmerje med moškimi (R) in ženskimi (A) rastlinami pa na njihovih podploskvah (2R:10A, 2R:12A, 2R:14A in 2R:16A). Rezultati so pokazali, da so se trajanje odpiranja cvetov (min), kot odprtega cveta (0), odstotek podaljšanih filamentov (%), dolžina filamentov (mm), dolžina prašnic (mm), višina rastlin (cm) in število poganjkov na sadilno mesto pri moškem staršu ‘Giza 178’ značilno povečali pri uporabi 300 g GA3 ha-1.


Ključne besede


pridelovanje hibridnega riža; citoplazmatsko sterilne moške linije; giberilinska kislina (GA3); razmerje moških in ženskih rastlin; latenje

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Literatura


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DOI: http://dx.doi.org/10.14720/aas.2021.117.3.2114

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