Actions of sodium hypochlorite and hydrogen peroxide on seed dormancy and germination of wild oats, <i>Avena fatua</i> L.

Hsiao, A. I.; Quick, W. A.

doi:10.1111/j.1365-3180.1984.tb00604.x

Cited by 40 publications

(28 citation statements)

References 19 publications

(9 reference statements)

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“…Seedling height and root length were 6.77 and 9.26 cm in a 3.75% NaOCl solution at 35°C temperature ( Table 5 and Figure 4). These indings were parallel to those of Hsiao and Hans [53], Hsiao and Quick [54], and Yildiz and Er [42] who reported that disinfectants at high concentrations and high temperatures afected seed germination and seedling growth negatively.…”

Section: Sodium Hypochlorite Solutionssupporting

confidence: 80%

Seed Dormancy

Yıldız¹,

Beyaz²,

Gürsoy³

et al. 2017

Advances in Seed Biology

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Dormancy is when there is a lack of germination in seeds or tubers even though the required conditions (temperature, humidity, oxygen, and light) are provided. Dormancy is based on hard seed coat impermeability or the lack of supply and activity of enzymes (internal dormancy) necessary for germination. Dormancy is an important factor limiting production in many ield crops. Several physical and chemical pretreatments are applied to the organic material (seeds/tubers) to overcome dormancy. Physical and physiological dormancy can be found together in some plants, and this makes it diicult to provide high-frequency, healthy seedling growth, since the formation of healthy seedlings from the organic material (seeds/tubers) sown is a prerequisite for plant production. This chapter will focus on the description of four diferent methods we have not seen reported elsewhere for overcoming dormancy.

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Section: Sodium Hypochlorite Solutionssupporting

confidence: 80%

Seed Dormancy

Yıldız¹,

Beyaz²,

Gürsoy³

et al. 2017

Advances in Seed Biology

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“…The NaOCl/H 2 O 2 treatment consistently induced the highest final percentage of germination of all the presowing seed treatments at 30 °C, and may have counteracted the effects of inhibitors in the pericarp that are responsible for thermosensitivity. In support of this hypothesis, Hsiao and Quick (1984) showed that NaOCl and H 2 O 2 break dormancy in wild oat (Avena fatua L.) seeds by modification of the seed coverings. In addition to counteracting chemical inhibitors, H 2 O 2 increases availability of oxygen to seeds at high temperatures by providing supplemental oxygen for respi- ration and metabolic activities.…”

Section: Resultsmentioning

confidence: 84%

Seed Enhancements to Improve Spinach Germination

Katzman¹,

Taylor²,

Langhans³

2001

HortSci

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Rapid, synchronized, and high percentage of germination is required for commercial spinach (Spinacia oleracea L.) production using hydroponic techniques. Seed treatments examined to improve seed germination were: 1) decoating; 2) leaching in water; and 3) soaking seeds for 4 hours in 0.5% NaOCl, leaching for 15 hours in water, and sowing in 0.3% H2O2 (this treatment will be referred to as NaOCl/H2O2). Germination studies were conducted on four cultivars at a constant 18 °C (optimal) or 30 °C (inhibitory). At 18 °C, germination rate (T50) was maximized by both hydration treatments, but uniformity of germination (Tsd) was greatest for decoated seeds; final germination was ≥89% for all treatments. At 30 °C, decoating resulted in greatest uniformity of germination. The NaOCl/H2O2 treatment resulted in highest germination (94%) at the high temperature, whereas decoating was least effective (69%). Reduced germination of decoated seeds was attributed to atypical germinants. Cultivars differed in response to the treatments at both temperatures. Component analysis of the NaOCl/H2O2 treatment was studied with two slow-to-germinate cultivars. Treatment with H2O2, with or without NaOCl, improved the rate, uniformity, and percentage of germination of seeds of both cultivars, but NaOCl alone did not. Pericarp removal or pericarp removal plus NaOCl/H2O2 treatments reduced variability in germination time and enhanced speed of germination at 30 °C, but decoating produced a higher percentage of atypical seedlings than did other treatments. Therefore, the NaOCl/H2O2 treatment is recommended for growers who are unable to maintain cool germination temperatures and/or cannot afford the costs associated with cooling. If growers can maintain a germination temperature of ≈18 °C, decoated seeds are preferable, based on the high uniformity of germination.

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“…H 2 O 2 is beneficial on seed germination in a number of diverse plant species (TeKrony and Hardin 1966;Chien and Lin 1974;Hsiao and Quick 1984;Snow 1985;McGrath et al 2000). Mechanisms for enhanced H 2 O 2 germination may include oxidation of germination inhibitors, oxidation of physical or other chemical restraints on germination and antibiosis to seedling pathogens (Heydecker et al 1971;Chien and Lin 1974;McGrath et al 2000).…”

Section: Discussionmentioning

confidence: 99%

Cultivar-specific seedling vigor and expression of a putative oxalate oxidase germin-like protein in sugar beet (Beta vulgaris L.)

Reyes

McGrath

2003

Theor Appl Genet

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For genetic screening and breeding purposes, an in vitro germination system that reflects relative field emergence potential was used to screen for germination-enhancing and stress-induced genes from germinating seedlings from two varieties of sugar beet. Three full-length germin-like protein (GLP) gene classes were recovered from stress-germinated seedlings of a superior emerging variety. GLP gene expression, oxalate oxidase protein activity, the H(2)O(2) content of stressed seedlings, but not catalase activity, were induced by stress germination conditions (e.g. excess water, NaCl, mannitol, or oxalate) in a good emerging hybrid and were not induced in a poor emerging variety. Only one of the three germin-like protein genes ( BvGer165) was differentially regulated, and was induced only in the good emerger. Hydrogen peroxide promoted germination and partially compensated solute-depressed germination percentages. Unlike other solute recovery by hydrogen peroxide regimes, recovery in oxalic acid plus H(2)O(2) was cultivar-independent. A block in oxalate metabolism is postulated to contribute to lower germination under stress in the lower emerging variety. Selection for stress-induced germin expression, or for down-stream targets, presents the first direct target to enable breeding for improved field emergence of sugar beet.

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Actions of sodium hypochlorite and hydrogen peroxide on seed dormancy and germination of wild oats, Avena fatua L.

Cited by 40 publications

References 19 publications

Seed Dormancy

Seed Dormancy

Seed Enhancements to Improve Spinach Germination

Cultivar-specific seedling vigor and expression of a putative oxalate oxidase germin-like protein in sugar beet (Beta vulgaris L.)

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