Foliarno dodajanje silikata izboljšuje toleranco zelene, ki raste v razmerah vročinskega stresa

Fadl Abdelhamid HASHEM, Rasha M. EL-MORSHEDY, Tarek M. YOUNIS, Mohamed A. A. ABDRABBO

Povzetek


Dvig temperatrure je eden izmed največjih izzivov podnebnih sprememb, katerega učinki povečujejo jakost vročinskega stresa. V tej raziskavi je bil v zvezi s tem preučevan pridelek zelene (Apium graveolens var. rapeceum F1 hibrid) tekom pozne rastne sezone. Poskus je bil izveden v dveh zaporednih poletnih sezonah 2019 in 2020 na območju upravne enote Giza, Egipt. Poskus je bil izveden kot poskus z deljenkami, kjer so obravnavanja na glavnih ploskvah obsegale tri vrste nizke tunelske kritine in tri obravnavanja s škropljenjem s tremi ponovitvami na podploskvah. Rezultati so pokazali, da je uporaba bele mreže kot kritine dala največji prirast biomase in največji pridelek, čemur je sledila uporaba črne mreže. V prvi rastni sezoni so bili pridelki 951, 765, in 660 g/rastlino za belo, črno kritino in brez nje. V primerjavi s kontrolo je foliarno dodajanje 3 mM kalijevega silikata dalo največjo prirast biomase in največji pridelek. Glede na učinek foliarnega dodajanja kalijevega silikata (1,5 mM (S1), 3 mM (S2), in kontrola) na velikost pridelka so bile njegove vredenosti 892, 795, in 689 g/rastlino v prvi rastni sezoni. Najboljša kombinacija, ki je povzročila najboljšo rast in dala največji pridelek je bil nizek tunel pokrit z belo mrežo in s S2 foliarnim obravnavanjem.

Ključne besede


zelena; podnebne razmere; fizikalna zaščita; vegetativna rast; kemijska analiza

Celotno besedilo:

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DOI: http://dx.doi.org/10.14720/aas.2021.117.3.1865

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