Environmental and maternal factors affecting on oriental mustard (Sisymbrium orientale L.) and musk weed (Myagrum perfoliatum L.) seed germination

Karimmojeny, Hassan; Rezvani, Mohammad; Zaefarian, Faezeh; Nikneshan, Pejman

doi:10.1007/s40415-014-0058-1

Cited by 8 publications

(5 citation statements)

References 27 publications

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“…Previous research also has shown that the fruits of Brassicaceae do not open easily and that this delays germination after the physiological dormancy is broken, as the fruit walls can prevent germination via mechanical restriction or chemical inhibition (Mekenian & Willemsen 1975;Cheam 1986;Mamut et al 2014). Increasing the germination of M. perfoliatum seeds by removing the siliques also has been reported by Karimmojeny et al (2014). Removing the siliques of turnipweed, which has a similar fruit morphology to that of M. perfoliatum, was very effective in breaking its seed dormancy (Cousens et al 1994;Chauhan et al 2006b;Ohadi et al 2011).…”

Section: Discussionmentioning

confidence: 82%

“…The germination of the naked seeds of M. perfoliatum was stimulated by GA 3 (Table 1). An increase in seed germination by GA 3 was demonstrated in M. perfoliatum by Karimmojeny et al (2014), who also found that the seed germination of M. perfoliatum was increased by the enhancement of GA 3 concentrations at ≤20 p.p.m., while higher concentrations of GA 3 had inhibitory effects on germination. Seed germination reduction by GA 3 has been reported by Golmohammadzadeh et al (2004) Therefore, the response of the M. perfoliatum seeds to GA 3 is likely to be related to the presence of physiological dormancy in the seeds of this species.…”

Section: Discussionmentioning

confidence: 85%

“…However, little is known about how these factors influence the germination of M. perfoliatum. Karimmojeny et al (2014) have studied the effect of fruit wall removal, GA 3 , after-ripening and temperature on the germination of M. perfoliatum. They found that removing the fruit wall was the most effective way to increase the germination rate of M. perfoliatum.…”

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confidence: 99%

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Factors affecting the seed germination and seedling emergence of muskweed (Myagrum perfoliatum)

Honarmand

Nosratti

Nazari

et al. 2016

Weed Biology and Management

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Myagrum perfoliatum is a noxious broad‐leaved weed in western Iranian farming systems. A better understanding of the timing of seedling emergence would facilitate the development of better control strategies for this weed. Therefore, the objective of this study was to examine the effects of different factors on muskweed seed germination. Only 2.8% of the seeds of this species, which are encapsulated in siliques, germinated by, while the seeds that had been removed from the siliques had a 50% germination rate. The immersion of muskweed fruits in concentrated sulfuric acid for 110 min was the best treatment for promoting germination. Gibberellic acid stimulated the germination of the naked seeds by 29.1%, potassium nitrate (40 mmol L‐1) increased the germination rate to 71%, while higher concentrations of potassium nitrate inhibited germination. The optimum germination temperature for the naked seeds was 20/10°C (day/night) and light was not required for germination. No seedling emerged when the seeds were buried 6 cm deep. The seeds were sensitive to both osmotic and salinity stress, but they germinated to 46–49% over a pH range of 4–10. The results of this study revealed that the seeds of M . perfoliatum have physiological dormancy and that it is slowly broken via after‐ripening. However, the fruit wall can prevent germination after physiological dormancy is broken. Thus, this species has the potential to form a persistent seed bank because of the presence of the fruit wall.

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Section: Discussionmentioning

confidence: 82%

Section: Discussionmentioning

confidence: 85%

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Factors affecting the seed germination and seedling emergence of muskweed (Myagrum perfoliatum)

Honarmand

Nosratti

Nazari

et al. 2016

Weed Biology and Management

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“…Karimmojeny et al (2014) showed a stimulatory effect of alternating temperature on seed germination of oriental mustard (Sisymbrium orientale). Temperature regulates seed germination by affecting enzymatic activity and several other metabolic processes (Chaturvedi et al 2014).…”

Section: Discussionmentioning

confidence: 99%

Effect of some environmental factors on seed germination of Eryngium caeruleum M. Bieb. populations

Rezvani

Zaefarian

2017

Acta Bot. Bras.

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Th e eff ects of alternating and constant temperatures and light regimes, osmotic and salt stress and pH were tested on seed germination in four populations of Eryngium caeruleum. Laboratory experiments revealed that the four populations exhibited diff erent responses to alternating temperature and light conditions. Alternating temperature and photoperiod had a greater positive eff ect on seed germination compared to complete darkness. Th e optimal constant temperature within 10 ºC to 15 ºC for seed germination of each population was determined in a light/ dark photoperiod. Seed germination severely decreased under water stress and was completely inhibited at -0.8 MPa osmotic potential. Saline stress sharply decreased germination percentage. Germination was restricted by pH lower and higher than 5 and 8, respectively. Th e information obtained from this study helps to fi ll the gap of knowledge about seed germination requirements of E. caeruleum and enhance our understanding of this species distribution and its potential to develop in stressful and/or new habitats.

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“…at lower temperatures (10 to 20°C) compared to higher temperature. Germination of Oriental mustard ( Sisymbrium orientale L.) was significantly higher at 25/15°C compared to low temperatures (15/5 or 20/10°C) [ 28 ]. Germination of naked seeds was greater than the seed in intact silique.…”

Section: Discussionmentioning

confidence: 99%

Germination ecology of turnip weed (Rapistrum rugosum (L.) All.) in the northern regions of Australia

2018

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In Australia, turnip weed has been rapidly emerging as one of the major weeds in conservation agricultural systems. Germination and emergence of turnip weed were examined for two populations collected from Gatton and St George regions of Australia; two locations with high and low rainfall, respectively. The seeds of turnip weed germinated at all the tested temperatures, but germination was the lowest at 15/5°C, intermediate at 20/10°C and highest at 25/15°C and 30/20°C. The results indicated a high adaptability of turnip weed to warm environmental conditions, although it is a major problem in the winter season. Germination was higher in dark than light/dark regimes except at 30/20°C. Three was a concomitant reduction in germination as the osmotic potential values decreased from 0 to -1.0 MPa. There was 2 and 4% germination at -0.8 MPa for Gatton and St George populations, respectively, and no germination occurred at an osmotic potential of -1.0 MPa. There was a reduction in germination when the sodium chloride (NaCl) concentration was increased from 0 to 150 mM, and no germination was observed at 200 and 250 mM of NaCl. Turnip weed germinated over a broad range of pH (4 to 10). Seedling emergence was higher at 1 cm depth compared to 0.5 cm or at the soil surface. There was 28 and 33% emergence at the surface for the Gatton and St George populations, respectively, compared to 48 and 56% emergence from 1 cm depth for the Gatton and St George populations, respectively and no emergence was observed from 6 cm depth. The results indicated that tillage leading to shallow burial would promote the emergence of turnip weed; on the contrary, tillage that could bury seeds deep into the soil profile might minimise the emergence. Under ideal conditions and lack of integrated weed management programmes, this weed will emerge, set seeds and enrich the soil seed bank and thereby continue to be a problem in the northern grain region of Australia.

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Environmental and maternal factors affecting on oriental mustard (Sisymbrium orientale L.) and musk weed (Myagrum perfoliatum L.) seed germination

Cited by 8 publications

References 27 publications

Factors affecting the seed germination and seedling emergence of muskweed (Myagrum perfoliatum)

Factors affecting the seed germination and seedling emergence of muskweed (Myagrum perfoliatum)

Effect of some environmental factors on seed germination of Eryngium caeruleum M. Bieb. populations

Germination ecology of turnip weed (Rapistrum rugosum (L.) All.) in the northern regions of Australia

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