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Author |
Krause, G.H.; Weis, E. |
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Title |
Chlorophyll Fluorescence and Photosynthesis: The Basics |
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Journal Article |
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Year |
1991 |
Publication |
Annual Review of Plant Physiology and Plant Molecular Biology |
Abbreviated Journal |
Annu. Rev. Plant. Physiol. Plant. Mol. Biol. |
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42 |
Issue |
1 |
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313-349 |
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Plants |
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1040-2519 |
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LoNNe @ kagoburian @ |
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654 |
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Author |
Buschmann, C.; Lichtenthaler, H.K. |
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Title |
Principles and characteristics of multi-colour fluorescence imaging of plants |
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Journal Article |
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Year |
1998 |
Publication |
Journal of Plant Physiology |
Abbreviated Journal |
Journal of Plant Physiology |
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Volume |
152 |
Issue |
2-3 |
Pages |
297-314 |
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Plants |
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ISSN |
0176-1617 |
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LoNNe @ kagoburian @ |
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652 |
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Author |
Taylor, G.; Davies, W.J. |
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Title |
The Control Of Leaf Growth Of Betula And Acer By Photoenvironment |
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Journal Article |
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Year |
1985 |
Publication |
New Phytologist |
Abbreviated Journal |
New Phytol |
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Volume |
101 |
Issue |
2 |
Pages |
259-268 |
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Keywords |
Plants |
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Leaf extension of one‐year‐old seedlings of silver birch (Betula pendula Roth.) and sycamore (Acer pseudoplatanus L.), was measured using linear variable transducers (LVDTs) interfaced to a microcomputer. Birch and sycamore seedlings exhibited contrasting patterns of leaf extension during a diurnal cycle with a 16 h photoperiod. Birch leaves grew more rapidly when illuminated; growth during the photoperiod was approximately doubled when compared with growth in the dark. Mean relative growth rates ±SE at ‘lights‐on + 3 h’ and ‘lights‐off + 5 h’ were 0.0136 ± 0.0016 and 0.0066 ± 0.0005 h−1 respectively. In direct contrast, growth of sycamore leaves was increased when leaves were darkened; mean relative growth rates + SE at ‘lights‐on+3 h’ and ‘lights‐off + 5 h’ were 0.0056 ± 0.0005 and 0.0094 ± 0.0008 h‐1 respectively.
When leaves of birch and sycamore were darkened, increased leaf turgor was measured in both species, but only in sycamore was this higher night‐time turgor associated with a higher rate of leaf growth.
Cell wall extensibility (WEX), an indication of the ability of cell walls to loosen and extend irreversibly, and cell surface pH were assessed in darkened and illuminated leaves of both species. An increase in WEX was measured when birch leaves were illuminated (P≤ 0.001) and this was accompanied by a decline in cell surface pH (P≤ 0.001). However, when leaves of sycamore were illuminated, WEX declined (P≤ 005) and cell surface pH increased (P≤ 0.001).
The ability of these species to survive beneath a woodland canopy is discussed in relation to the cellular factors controlling their leaf growth. |
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0028-646X |
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Call Number |
GFZ @ kyba @ |
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1992 |
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Author |
Tavhare, S.D.; Nishteswar, K.; Shukla, V.J. |
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Title |
Influence of lunar cycles on growth of Ashwagandha (Withania somnifera [L.] Dunal) |
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Journal Article |
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Year |
2015 |
Publication |
Ayu |
Abbreviated Journal |
Ayu |
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Volume |
36 |
Issue |
3 |
Pages |
258-264 |
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Keywords |
Plants; Moonlight |
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INTRODUCTION: Ayurvedic classics have advocated to collect the medicinal plants according to part used and seasons in order to get desired pharmacological action and therapeutic benefits. The logic behind this principle is being validated by recent researches. AIM: To analyze the influence of lunar cycles on growth of Ashwagandha in Shishira and Greeshma Ritu (winter and summer season). MATERIALS AND METHODS: Fourteen small crops of Ashwagandha of average size 10 cm were collected on October 7, 2013, from institute campus and then replantation was done at Charaka Herbal Garden, Gujarat Ayurved University, Jamnagar in an area of 60 cm x 60 cm (l x b). No fertilizers or pesticides were used. The plants were watered daily and plants were uprooted as per lunar cycles for analysis. Eight samples were collected and observed during Shishira and Greeshma season on Pournima (full moon) and Amavasya (new moon) days. The measurements were taken thrice and average values were taken into consideration for study purpose. The variations in morphological characteristics such as length, breadth, weight, and number of roots and twigs were studied through statistical procedure of principle component analysis, which makes interpretation of all possible related variables. RESULTS: Root weight (RW), pith diameter (PD) and internodal distance (ID) were found to be increased on full moon days as compared to new moon days. The maximum RW was observed during Greeshma Aashadha Pournima. CONCLUSION: The study has shown a definite influence of lunar cycles on the growth of the plant parts assessed by RW, PD, and ID that have found to be increased on full moon days as compared to new moon days. |
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Department of Pharmaceutical Chemistry Laboratory, Institute for Post Graduate Teaching and Research Ayurveda, Gujarat Ayurved University, Jamnagar, Gujarat, India |
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English |
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ISSN |
0974-8520 |
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Notes |
PMID:27313411; PMCID:PMC4895751 |
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Call Number |
LoNNe @ kyba @ |
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1559 |
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Author |
Moore, B. |
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Title |
The Relative Length of Day and Night |
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Journal Article |
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Year |
1920 |
Publication |
Ecology |
Abbreviated Journal |
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Volume |
1 |
Issue |
3 |
Pages |
234-237 |
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Plants |
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ISSN |
0012-9658 |
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Call Number |
GFZ @ kyba @ |
Serial |
2407 |
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