Potato Growth and Yield as Affected by Foliar Application with Naa Auxin and 6-Ba Cytokinin

Abstract

Two open field experiments were conducted during summer seasons of 2019 and 2020, in a private farm at Abou El-Matamer district, Behiera Governorate, Egypt. Certified imported potato seeds of 'Cara' cv. were used after splitting-up. Cut seedy explants (ca. 40 g) contain two eyes each were planted at 0.80 m wide and 0.20 m apart between hills, using four concentrations of synthetic NAA auxin (control, 25, 50, and 100 mg l -1 ) and four concentrations of the synthetic cytokinin BA (control, 25, 50, and 100 mg l -1 ) were foliar applied separately and in combinations. Control plants were sprayed with distilled water. The effects of both variables and their combinations were investigated on the vegetative growth-related characters, yield and its components, leaves and tubers chemical composition. The obtained results declare, in general, that foliar application treatments of auxin (NAA) and cytokinin as BA alone or in combination to potato plants gave, significantly, the highest average values of both yield and chemical content compare to untreated plants. The combination between 100 mg l -1 NAA plus 100 mg l -1 BA might be considered as an optimal treatment for the production of high yield and good quality of potato plants under the environmental conditions of Behiera Governorate and other similar regions.

Effect of 6-Benzyl Aminopurine Different Concentration on Potato (Solanum tuberosum L.) Minitubers in Net House and in Field

“…Walia et al, 2021 obtained consistent results in the potato variety Kufri Girdhari. Kazemiani et al (2012) discovered that 2 mg/l BAP into culture media increased the number of lateral shoots.Similar result was also observed with (Ahmed et al, 2021). For root length results was similar with Krish namurthy et al (2001) but in Polia nthes tuberosa L.…”

“…The minimum number of stolons and minitubers were recorded in control. This result was similar with Kumar and Wareing (1972) regarding stolons numbers, Ahmadi et al, (2018) and Ahmed et al, (2021) in case of minitubers nimber.…”

Agricultural Bioinputs Obtained by Solid-State Fermentation: From Production in Biorefineries to Sustainable Agriculture

“…Over the years, many studies have shown that auxin-regulated cell expansion plays an important role in plant development, specifically in primary root growth [164,165], lateral root development [166,167], organ development [168,169], tropism [170,171], apical dominance [172,173], etc. Because of their multifunctionality, auxins can be used in strategic plantations as plant growth promoters, and this approach has shown promising results in sugarcane [174], potato [175], and tomato plantations [176]. Auxins also help to obtain higher yields of good quality carrot seeds [177], improve the root morphology and growth of grafted cucumber seedlings [178], and can be used to alleviate abiotic stresses [179][180][181] The most well-known compound used to treat weeds using auxin-based products in plantations is 2,4-dichlorophenoxyacetic acid (2,4-D), which was discovered in the 1940s and has been used extensively for more than 70 years worldwide.…”