2014
DOI: 10.1590/0102-33062014abb3337
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Abstract: Shepherd's purse (Capsella bursa-pastoris) is a problematic weed in citrus orchards and crop fields in northern Iran. In a series of laboratory and greenhouse experiments, we evaluated the effects that treatment with gibberellic acid (GA 3 ) and potassium nitrate (KNO 3 ), as well as environmental factors, including temperature, the duration of pre-chilling (wet and dry), drought stress, salt stress, pH, and sowing depth, have on seed dormancy breaking and germination in C. bursa-pastoris. Treatment with GA 3 … Show more

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Cited by 21 publications
(14 citation statements)
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“…Germination of the study populations reduced with increasing osmotic stress at all temperatures. The negative impact of osmotic stress on germination was previously reported by Rezvani & Zaefarian (2016) in hoary cress, and Rezvani et al (2014) in shepherd's purse. Soil water potential is one of the factors that regulate seed water uptake.…”
Section: Discussionsupporting
confidence: 58%
See 1 more Smart Citation
“…Germination of the study populations reduced with increasing osmotic stress at all temperatures. The negative impact of osmotic stress on germination was previously reported by Rezvani & Zaefarian (2016) in hoary cress, and Rezvani et al (2014) in shepherd's purse. Soil water potential is one of the factors that regulate seed water uptake.…”
Section: Discussionsupporting
confidence: 58%
“…Differences in seed germination imposed by light/dark and completedarkness regimes have been previously reported by Rezvani & Zaefarian (2016) in hoary cress (Cardaria draba) and Rezvani et al (2014) in shepherd's purse (Capsella bursapastoris).…”
Section: Discussionmentioning
confidence: 59%
“…Germination was 57.8% when osmotic potential was -0.2 MPa, but enhancement of osmotic stress from -0.2 MPa up to -0.8 MPa markedly reduced germination, and then seed germination reached zero at a range of -1 to -1.2 MPa osmotic potential ( Figure 6). A negative effect of osmotic stress on seed germination was reported in different plants including shepherd's purse (Capsella bursapastoris) (Rezvani et al, 2014), black nightshade (Rezvani and Fani Yazdi, 2013) and sheep sorrel (Rumex acetosella) (Fani Yazdi et al, 2013). In the north of Iran, greater bur-parsley seed germination occurs from mid November.…”
Section: Osmotic Stressmentioning
confidence: 99%
“…Sowing depth is critical for germination, and seedling emergence decreased with sowing depth. The rates of C. bursa-pastoris germination and seedling emergence were highest for seeds on the soil surface [38].…”
Section: Seed Dormancy In Response To Stresses and Herbicidesmentioning
confidence: 92%
“…Some chemical compounds or secondary metabolites are also known as allelochemicals such as phenolics, unsaturated lactones, short-chain fatty acids, coumarins, and many others have been reported as germination inhibitors present in seeds of many weed species [38,39]. To enhance germination, leaching and oxidative destruction of these chemicals within the seed are necessary for dormancy termination.…”
Section: Physiology Of Dormancy In Weed Seedsmentioning
confidence: 99%