The effect of light quality on seed germination, seedling growth and selected biochemical properties of Stevia rebaudiana Bertoni

2016 ◽  
Vol 211 ◽  
pp. 295-304 ◽  
Author(s):  
Magdalena Simlat ◽  
Patrycja Ślęzak ◽  
Maria Moś ◽  
Marzena Warchoł ◽  
Edyta Skrzypek ◽  
...  
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Light Quality ◽  
Stevia Rebaudiana ◽  
Biochemical Properties ◽  
Stevia Rebaudiana Bertoni ◽  
Effect Of Light

The Effect of Light Quality on Growth and Development of In Vitro Plantlet of Stevia rebaudiana Bertoni

Sugar Tech ◽  
2016 ◽  
Vol 19 (3) ◽  
pp. 331-336 ◽  
Author(s):  
Marco A. Ramírez-Mosqueda ◽  
Lourdes G. Iglesias-Andreu ◽  
José R. Bautista-Aguilar
Keyword(s):  
Growth And Development ◽  
Light Quality ◽  
Stevia Rebaudiana ◽  
Stevia Rebaudiana Bertoni ◽  
Effect Of Light

scholarly journals Effect of light quality on Tabebuia rosea seed germination

2014 ◽  
Vol 20 (2) ◽  
pp. 191
Author(s):  
Sofía Basto ◽  
Claudia Ramírez
Keyword(s):  
Seed Germination ◽  
Light Quality ◽  
Germination Rate ◽  
Germination Capacity ◽  
Germination Speed ◽  
Tabebuia Rosea ◽  
Germination Value ◽  
Positive Effect ◽  
Effect Of Light ◽  
Peak Value

Tabebuia rosea germination capacity and rate have been examined under light and dark conditions. However, seeds responses to light quality, in particular to short and mid-wavelengths, are not well known. We hypothesized that short wavelengths would have a positive effect on rosea germination. The effects of short, mid and long-wavelengths on germination capacity, rate (germination rate index, germination rate R50, a devised index of germination rate R50´ and peak value), mean daily germination and germination value were evaluated. Light quality had little effect on germination capacity; it was reduced only in darkness. Seeds under short and mid-wavelengths germinated faster (germination rate) than under any other light treatments. We concluded that althoughlt T. rosea seeds respond to all light quality treatments, the short and mid-wavelengths are the cue for increasing germination speed. For synchronizing germination, short and mid-wavelengths transmitted by red cellophane paper can be used as a pre-germinative treatment for restoration and silvicultural purposes.

scholarly journals Effects of Light Quality on Seed Germination and Seedling Growth of Cattleya Orchids in vitro.

1999 ◽  
Vol 68 (6) ◽  
pp. 1132-1138 ◽  
Author(s):  
Obaidul M. Islam ◽  
Shuichiro Matsui ◽  
Syoichi Ichihashi
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Light Quality

scholarly journals Light quality and dormancy overcoming in seed germination of Echium plantagineum L. (Boraginaceae)

2020 ◽  
Author(s):  
R. Roso ◽  
U. R. Nunes ◽  
C. A. Müller ◽  
J. T. Paranhos ◽  
S. J. Lopes ◽  
...  
Keyword(s):  
Seed Germination ◽  
Relative Frequency ◽  
Significant Interaction ◽  
Light Quality ◽  
Red Light ◽  
Potassium Nitrate ◽  
Light Filter ◽  
Weed Species ◽  
Light Filters ◽  
Effect Of Light

Abstract Light is considered a factor that influences the seed germination of many weed species, and it can signal whether the environmental conditions are favorable or are not favorable for germination. We aimed to study if there is an influence of light quality and dormancy overcoming in seed germination of Echium plantagineum L. We carried out a 2 x 6 factorial experiment, with and without dormancy overcoming with potassium nitrate followed by immersion in gibberellic acid; six light qualities, obtained through the light filters: blue, green, red, far-red, white light and absence of light. The evaluations performed were germination speed index (GSI), average germination time (AGT), germination at the four and 14 days after seeding (DAS), accumulated germination and relative frequency of germination. We observed significant interaction among the light qualities and seed dormancy overcoming or not for the studied variables. There was no significant effect of light qualities, in the evaluated variables, when performing dormancy overcoming, presenting germination above 90% in all the light qualities. However, without dormancy overcoming, we observed greater GSI, germination at four and 14 DAS for the red light filter with 5, 4, 29 and 45%, respectively. When the seeds were submitted to the absence of light, and without dormancy overcoming, there was only 7% of germination at 14 DAS. The seeds of E. plantagineum presented greater germination under incidence of red light, without dormancy overcoming, being classified as preferably positively photoblastics, provided that the dormancy is not overcome.

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