The Effect of Sodium Hypochlorite, Gibberellic Acid and Light on Seed Dormancy and Germination of Stinkweed and Wild Mustard

Hsiao, A. I.

doi:10.4141/cjps80-091

Cited by 19 publications

(15 citation statements)

References 14 publications

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“…These studies indicated that germination increased with increasing lengths of exposure of weed seeds to NaOCl, but up to certain limits. The immersion of weeds seeds in NaOCl made the seeds more sensitive to the exogenous GA 3 application, light, or both 23 . Treatment of NaOCl released seed dormancy of Avena fatua L. possibly by modifying the properties of the hull and seed coat membranes, or by increasing the permeability of the seed to oxygen 22 .…”

Section: Introductionmentioning

confidence: 99%

Evaluation of dormancy breaking methods for enhanced germination in four biotypes of Brassica tournefortii

Mahajan

Mutti

Jha

et al. 2018

Sci Rep

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Brassica tournefortii is an important broadleaf weed of the winter season in the northern grain region of Australia. Knowledge of germination ecology of this weed would help in implementing effective weed control programs. A series of experiments were conducted to study the germination and dormancy behavior of four biotypes of B. tournefortii seeds, biotypes A (collected from barley crop), B (barley fence lines), C (chickpea crop), and D (chickpea fence lines), collected from the St George region of Queensland. The aim of this research was to determine the effectiveness of various methods on the seed dormancy release of B. tournefortii. Water, potassium nitrate and a soil extract did not release dormancy in B. tournefortii seeds (biotype A) at 20/10 °C in the light/dark regime. Cold stratification (5 °C) also did not improve germination. However, gibberellic acid (GA3; 100–300 mg kg−1) stimulated germination (>88%). Germination also improved when seeds were immersed in sodium hypochlorite (NaOCl; 42 g L−1) for 10 minutes and the effect was more pronounced under the complete dark environment (89% germination at a day/night temperature of 20/10 °C). The NaOCl treatment makes seeds more porous and decreases sensitivity to light. Another experiment in light/dark conducted at 25/15 °C with two biotypes (A and D) showed that, without NaOCl treatment, biotype A was more sensitive to light (29% germination) as compared to biotype D (92% germination). Our results suggest that dormancy in B. tournefortii seeds can be broken by the combination of NaOCl (10 min) and a dark environment. A day/night temperature of 25/15 °C was found best for optimum germination (>87%) for all the biotypes (A-D) when incubated in dark after treating with NaOCl. This research indicated a high degree of variability in germination responses for various biotypes of B. tournefortii seeds to various sets of conditions, which may be due to metabolic changes in response to maternal environments or genetically controlled mechanisms. Information gained from this study will be important in developing a better understanding of the dormancy behavior of B. tournefortii seeds in response to tillage systems or maternal environments that could influence the weed seed bank in the soil and therefore help in designing suitable weed management programs.

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Section: Introductionmentioning

confidence: 99%

Evaluation of dormancy breaking methods for enhanced germination in four biotypes of Brassica tournefortii

Mahajan

Mutti

Jha

et al. 2018

Sci Rep

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“…In all cases, germination at 20/10°C was significantly lower than at 30/10°C. Hsiao (1980) described the effect of sodium hypochlorite (NaOCl), gibberellic acid (GA 3 ) and light on seed dormancy and germination of seeds of T. arvense originating from Saskatchewan. Light treatment alone was capable of inducing 100% germination, whereas GA 3 alone (26%) was similar to the control (24%).…”

Section: Reproductionmentioning

confidence: 99%

The biology of Canadian weeds. 9. Thlaspi arvense L. (updated)

Warwick¹,

Francis²,

Susko³

2002

Can. J. Plant Sci.

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. An updated review of biological information is provided for Thlaspi arvense. Native to Eurasia, the species is naturalized and widely spread in temperate regions of the northern hemisphere, including all of Canada's provinces and territories, and has recently spread to temperate regions in the southern hemisphere. It is an annual pioneer of disturbed soils and is an important weed of grain, oilseed, and forage crops in Canada, particularly in the prairies. High levels of erucic acid and glucosinolates can contaminate canola. When present in hay or other fodder, its seeds or leaves can be toxic to animals, as well as contaminate milk and meat with unpleasant flavors. It can serve as a host for insect, nematode, fungal and viral pests of canola and mustard crops. A persistent seed bank, high fecundity, and the growth habit of a hardy winter annual with early-(EF) and lateflowering (LF) strains, all contribute to its ability to compete with crops. Effective herbicides include the sulfonylureas, chlorsulfuron and ethametsulphuron, MCPA, tribenuronmethyl, phenocyacetic acid, flurtamone, 2,4-D, 2,4-D + dicamba, and 2,4-D + picloram. A resistant biotype to Group 2 herbicides, which inhibit acetolactate synthase (ALS), has been found at two to five sites in Alberta in 2001. The potential of T. arvense as an industrial oilseed crop is being investigated.

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“…The use of sodium hypochlorite (NaOCl) in seed dormancy and germination work has been reviewed by Hsiao (1979a,b;1980) and Hsiao er al. (1919Hsiao er al.…”

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confidence: 99%

Application of the Sodium Hypochlorite Seed Viability Test to Wild Oat Populations With Different Dormancy Characteristics

Hsiao¹,

Hanes²

1981

Can. J. Plant Sci.

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The Effect of Sodium Hypochlorite, Gibberellic Acid and Light on Seed Dormancy and Germination of Stinkweed and Wild Mustard

Cited by 19 publications

References 14 publications

Evaluation of dormancy breaking methods for enhanced germination in four biotypes of Brassica tournefortii

Evaluation of dormancy breaking methods for enhanced germination in four biotypes of Brassica tournefortii

The biology of Canadian weeds. 9. Thlaspi arvense L. (updated)

Application of the Sodium Hypochlorite Seed Viability Test to Wild Oat Populations With Different Dormancy Characteristics

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