&lt;b&gt;Light regime and temperature on seed germination in &lt;i&gt;Salvia hispanica&lt;/i&gt; L.

Paiva, Emanoela Pereira de; Torres, Salvador Barros; Sá, Francisco Vaniés da Silva; Nogueira, Narjara Walessa; Freitas, Rômulo Magno Oliveira de; Leite, Moadir de Sousa

doi:10.4025/actasciagron.v38i4.30544

Cited by 23 publications

(19 citation statements)

References 14 publications

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“…There was no difference for root length among seeds subjected to the presence and/or absence of light. Different results were found by Paiva et al (2016): Salvia hispanica seeds showed greater seedling growth and dry matter accumulation in the presence of light.…”

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confidence: 85%

Germination of Stigmaphyllon blanchetii Seeds in Different Temperatures and Luminosity

et al. 2019

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The objective of the present work was to study the influence of temperature and light on germination of seeds of Stigmaphyllon blanchetii, popularly known as rat tail. The first stage of the research evaluated the effect of three constant temperatures (20 oC, 25 oC and 30 oC) and an alternating temperature (20-30 oC). In the second stage, for simulation of different types of light, four conditions of luminosity (white, red, far red and absence of light) were used. The temperatures that provided the best germination and development for S. blanchetii are the constant (30 oC) and the alternating (20-30 oC) ones. The seeds germinated both in the presence and absence of light, but there was greater germination and seedling development in the absence of light; thus they were classified as preferential negative photoblastic seeds.

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confidence: 85%

Germination of Stigmaphyllon blanchetii Seeds in Different Temperatures and Luminosity

et al. 2019

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“…Elastic grass (Eragrostis tenuifolia) showed 76 and 32% seed germination under light and dark conditions, respectively (Bittencourt et al, 2016). Salvia hispanica seed germinated equally in light and darkness (Paiva et al, 2016).…”

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confidence: 99%

Germination Ecology of Lathyrus aphaca, a Problematic Weed of Wheat Crop under Semi-Arid Conditions of Pakistan

et al. 2019

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Lathyrus aphaca is an aggressive dicotyledonous weed. The effect of different agroecological components/factors on the germination ecology of this weed was explored under a glasshouse and laboratory condition in 2014. The germination response of L. aphaca was lower at high temperature while maximum seed germination was found at 15/12 oC (day/night). Light significantly stimulated L. aphaca germination; nevertheless, substantial germination occurred under dark conditions. More than 86-90% of L. aphaca seeds germinated at pH level of 6.2-7.5. A significant quantity of seed germinated at 250 mM NaCl. There was no germination at -1 MPa. When the temperature was lower than 20/15 oC (day/night) initiation time of germination and germination index (GI) decreased but time to 50% germination (T50) and mean germination time (MGT) increased. Darkness resulted in increased time to start germination, T50, MGT and decreased GI in L. aphaca when compared with the 10 and 12 h photoperiods. The pH of 6 and above 7 enhanced germination time, T50, MGT but decreased GI. Salt stress above 100 mM increased time to germination, T50, MGT but reduced GI. Osmotic potential above -0.4 MPa increased initial germination time, T50 and MGT as well as decreased germination index (GI) of L. aphaca. Increased seed depth in soil lowered germination percentage and GI but enhanced initial germination time, T50, MGT. It was concluded that L. aphaca can grow over a wide range of agroecological/environmental conditions. These results may aid the development of agronomic tools and strategies for weed management in arable crops for yield enhancement.

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“…Seed sensitivity to luminosity is quite variable depending on the species. Some seeds (positive and negative photoblasts) are positively or negatively influenced by luminosity, whilst others are not influenced at all (neutral photoblasts) (GUEDES; ALVES, 2011;CARVALHO;NAKAGAWA, 2012;POSSENTI et al, 2016;PAIVA et al, 2016). The initial success of a crop is dependent on the use of high-quality seeds.…”

Section: Introductionmentioning

confidence: 99%

Effects of Temperature, Substrate and Luminosity Conditions on Chia Seed Germination

et al. 2019

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The aim of the present study was to evaluate the effects of temperature, substrate, and luminosity on chia seeds in order to determine adequate conditions for a germination test. The experiment consisted of a completely randomized design, in a 4 × 5 × 2 factorial scheme (four substrates × five temperatures × two luminosity conditions), with four replications. The following variables were analyzed: first germination count, germination, germination speed index, and mean germination time. Germination was best at 15, 20, 25, and 30 °C for the on-paper, paper roll, and sand substrates. However, in the presence of luminosity and at 25 °C, the on-paper substrate had the highest mean. For all substrates, the lowest germination was achieved at 35 °C, proving that high temperatures reduce chia seed germination. Germination speed index was highest at 25 and 30 °C for on-paper, paper roll, and sand substrates, in both the presence and absence of luminosity. Chia seeds are considered to be neutral photoblasts. Germination tests should be performed with the on-paper substrate, at 25 °C, and with a duration of seven days. The first count should be carried out four days after establishment of the test.

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<b>Light regime and temperature on seed germination in <i>Salvia hispanica</i> L.

Cited by 23 publications

References 14 publications

Germination of Stigmaphyllon blanchetii Seeds in Different Temperatures and Luminosity

Germination of Stigmaphyllon blanchetii Seeds in Different Temperatures and Luminosity

Germination Ecology of Lathyrus aphaca, a Problematic Weed of Wheat Crop under Semi-Arid Conditions of Pakistan

Effects of Temperature, Substrate and Luminosity Conditions on Chia Seed Germination

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