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Effects of biostimulator and leaf fertilizers on Prunus mahaleb L. stockplants and their cuttings

100%

Szabo V., Nemeth Z., Sarvari A., Vegvari G., Hrotko K.

Acta Scientiarum Polonorum. Hortorum Cultus

2014

tom 13

nr 6

The effect of Kelpak® biostimulator, Wuxal® Ascofol and Pentakeep®-V leaf fertilizers were tested on Prunus mahaleb L. ‘Bogdány’ stockplants. Shoot production and characteristics, rooting and quality of their cuttings were evaluated. Biostimulator and fertilizers were sprayed four times on leaves before cuttings were taken. The number and fresh masses of the shoots, cutting weights, leaf chlorophyll indexes (SPAD) and indole3-acetic-acid (IAA) levels in shoot tip were measured on stockplants. Rooting rates, IAA--levels in the rooting zone of cuttings, fresh and dry masses of rooted cuttings, both weights of the root and shoot were measured. Based on these results Kelpak® pretreatment could be considered as the most effective in improving the productivity of Prunus mahaleb L. stockplants, leaf chlorophyll indexes and IAA-level in shoot tip of stockplant and in cutting base. The stockplant pretreatment by Kelpak® increased both the single shoot mass and consequently the fresh mass of prepared cuttings. While these pretreatments alone did not affect the rooting rate, the pretreatment of shoots by Kelpak® and Pentakeep®-V increased the dry mass production of cuttings during rooting. Kelpak® pretreatment affected the root dry mass positively, while Pentakeep®-V increased the shoot dry mass of rooted cuttings.

Salt-tolerant plant growth-promoting bacteria enhanced salinity tolerance of salt-tolerant alfalfa (Medicago sativa L.) cultivars at high salinity

86%

Ansari M., Shekari F., Mohammadi M. H., Juhos K., Vegvari G., Biro B.

Acta Physiologiae Plantarum

2019

tom 41

nr 12

Alfalfa (Medicago sativa L.) plant growth decreases when cultivated under salinity or irrigated with salty water. Inoculation with plant growth-promoting bacteria (PGPB) is a method for mitigating the harmful effects of salinity on plants growth. To investigate salt-tolerant PGPB with salt-tolerant and salt-sensitive alfalfa cultivar interactions under salinity, some physiological and agronomical aspects were investigated. The inoculated plants of alfalfa cultivars with Hartmannibacter. diazotrophicus and Pseudomonas sp. bacteria were compared with non-inoculated plants. Plants were grown in growth room and irrigated with tap water until 6–7 weeks, and then, salinity stress imposed by irrigating with tap water (control), 10 dS m⁻¹ and 20 dS m⁻¹ NaCl. Salinity reduced relative water content (RWC), membrane stability index (MSI), K⁺, photosynthesis rate (Pn) and stomatal conductance (gs), leaf number, height, and dry weight, and increased sodium in all cultivars. Inoculation of cultivars with both PGPB mitigated the negative effects of salinity on plants growth by increasing the root length and weight, nodule number, chlorophyll pigments, RWC, MSI, Pn, and gs. Chlorophyll pigments, plant height and leaf number, Na⁺, K⁺/Na⁺, and nodule number improved more pronounced through inoculating with Pseudomonas sp., whereas K⁺, carotenoids, and RWC improved more pronounced through H. diazotrophicus under salinity. The results showed inoculation with two bacteria improved growth performance in salt-tolerant and salt-sensitive cultivars under 10 dS m⁻¹, but at high salinity (20 dS m⁻¹), inoculation was successful only in salt-tolerant alfalfa cultivars.

Ograniczanie wyników

1 Acta Physiologiae Plantarum

1 Acta Scientiarum Polonorum. Hortorum Cultus

2 Vegvari G.

1 Ansari M.

1 Biro B.

1 Hrotko K.

1 Juhos K.

1 Mohammadi M. H.

1 Nemeth Z.

1 Sarvari A.

1 Shekari F.

1 Szabo V.

1 2019

1 2014

Wyniki wyszukiwania

Effects of biostimulator and leaf fertilizers on Prunus mahaleb L. stockplants and their cuttings

Salt-tolerant plant growth-promoting bacteria enhanced salinity tolerance of salt-tolerant alfalfa (Medicago sativa L.) cultivars at high salinity