scholarly journals Supplementary Blue and Red Radiation at Sunrise and Sunset Influences Growth of Ageratum, African Marigold, and Salvia Plants

2011 ◽  
Vol 30 (4) ◽  
pp. 382-389 ◽  
Author(s):  
Jeong-Wook Heo ◽  
Yong-Beom Lee ◽  
Hea-Son Bang ◽  
Seung-Gil Hong ◽  
Kee-Kyung Kang
Keyword(s):  
African Marigold ◽  
Red Radiation ◽  
Blue And Red Radiation

scholarly journals Effect of blue and red radiation on cycling stomata of bean.

1973 ◽  
Vol 21 (2) ◽  
pp. 117-123
Author(s):  
P.A.M. Hopmans
Keyword(s):  
Blue Light ◽  
Red Light ◽  
Guard Cells ◽  
Radiant Flux ◽  
Stomatal Behaviour ◽  
Blue Radiation ◽  
Quantum Flux ◽  
Permeability For Water ◽  
Red Radiation ◽  
Blue And Red Radiation

Differences in the effect of blue and red radiation of low radiant flux density on sustained stomatal cycling were studied in Phaseolus vulgaris cv. Vroege Wagenaar. Stomatal behaviour in a constant environment was observed indirectly by recording the differences between leaf and air temperature. In radiation with equal radiant flux densities of 1.75 W/m2 and with equal estimated absorbed quantum flux densities of 0.73 nE/cm2 s of both colours, cycling was more rapid and peak-to-trough differences were smaller in red than in blue radiation. Blue radiation from below caused more rapid cycling with larger peak-to-trough differences than radiation from above. In red radiation the direction of radiation had a much smaller influence on period and peak-to-trough difference. To explain these qualitatively different effects of both colours on cycling stomata, the hypothesis is proposed that blue light increases the osmotic pressure in the guard cells more effectively than red light. In blue light the permeability for water transport of the guard cell membranes is lower than in red light. (Abstract retrieved from CAB Abstracts by CABI’s permission)

BUNGA TAGETES ERECTA L

2020 ◽  
Author(s):  
Ronald Nersada Eryono Aulu
Keyword(s):  
Tagetes Erecta ◽  
Carl Linnaeus ◽  
African Marigold ◽  
Tagetes Erecta L

Sebagian besar tanaman herba dalam keluarga bunga matahari. Tanaman ini digambarkan sebagai genus oleh Carl Linnaeus pada tahun 1753. Genus berasal dari Amerika Utara dan Amerika Selatan. Diterjemahkan dalam bahasa Inggris disebut big Marigold, bahasa latin Tagetes Erecta L adalah genus tahunan dan abadi, Bunga tahi ayam sering disebut sebagai kenikir, randa kencana dan ades (Indonesia), tahi kotok (Sunda), amarello (Filipina), African Marigold, Astec Marigold, American Marigold, Big Marigold (Inggris).Tagetes Erecta L, termasuk ke dalam keluarga Compositae (Asteraceae) dan mempunyai 59 species.

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