Simbiontski in fiziološki indikatorji soje, inokulirane sedem dni pred setvijo s sevom bakterije Bradyrhizobium japonicum

Nadiya VOROBEY, Kateryna KUKOL, Petro PUKHTAIEVYCH, Tetyana KOTS

Povzetek


Predstavljeni so rezultati raziskave inokulacije soje, sorte Almaz, s simbiontsko bakterijo Bradyrhizobium japonicum (Kirchner, 1896), Jordan; sevi 1982 B78, B157, D37, D87). Inokulacija semen soje je bila izvedena na dan setve (kontrola) in sedem dni pred setvijo (različna obravnavanja v poskusu). Ugotovljene so bile razlike med kontrolo in različnimi obravnavanji v tvorbi in delovanju simbiontskega aparata glede na čas inokulacije. Ugotovljeno je bilo, da je bilo število koreninskih nodulov pri kontrolnih rastlinah večje. Masa nodulov je na razvojni stopnji soje tretjega pravega lista presegala kontrolo pri rastlinah inokuliranih sedem dni pred setvijo za 1,5–2,0 krat , vezava zračnega dušika pa za 1,7–6,6 krat. Na razvojni stopnji začetka cvetenja sta se masa nodulov in jakost vezave N2 pri kontroli povečali, s čemer se je značilno zmanjšala razlika med kontrolo in obravnavanji. Opazen je bil tudi stimulacijski učinek inokulacije s sevi Bradyrhizobium japonicum na nadzemno biomaso soje zaradi povečane vezave dušika. Optimalne razmere za tvorbo in delovanje te rizobijske simbioze s sojo so se pojavile pri obeh načinih inokulacije. To nakazuje možnost učinkovite uporabe zgodnje inokulacije semen soje s pripravki aktivnih sevov bakterije Bradyrhizobium japonicum.


Ključne besede


rizobiji; Bradyrhizobium japonicum; bakterijski pripravki; predsetvena inokulacija; aktivnost vezave zračnega dušika; soja

Celotno besedilo:

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DOI: http://dx.doi.org/10.14720/aas.2022.118.2.1867

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Avtorske pravice (c) 2022 Nadiya VOROBEY, Kateryna KUKOL, Petro PUKHTAIEVYCH, Tetyana KOTS

 

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