scholarly journals Plant Movement. Submergence-Induced Petiole Elongation inRumex palustris Depends on Hyponastic Growth

2003 ◽  
Vol 132 (1) ◽  
pp. 282-291 ◽  
Author(s):  
Marjolein C.H. Cox ◽  
Frank F. Millenaar ◽  
Yvonne E.M. de Jong van Berkel ◽  
Anton J.M. Peeters ◽  
Laurentius A.C.J. Voesenek
Keyword(s):  
Petiole Elongation ◽  
Plant Movement ◽  
Hyponastic Growth

scholarly journals A kinetic analysis of hyponastic growth and petiole elongation upon ethylene exposure in Rumex palustris

2010 ◽  
Vol 106 (3) ◽  
pp. 429-435 ◽  
Author(s):  
Zohreh Heydarian ◽  
Rashmi Sasidharan ◽  
Marjolein C. H. Cox ◽  
Ronald Pierik ◽  
Laurentius A. C. J. Voesenek ◽  
...  
Keyword(s):  
Kinetic Analysis ◽  
Petiole Elongation ◽  
Hyponastic Growth

Arabidopsis SMAX1 overaccumulation suppresses rosette shoot branching and promotes leaf and petiole elongation

2021 ◽  
Vol 553 ◽  
pp. 44-50
Author(s):  
Xiujuan Zheng ◽  
Xianfeng Yang ◽  
Zheng Chen ◽  
Wenjia Xie ◽  
Xinwu Yue ◽  
...  
Keyword(s):  
Shoot Branching ◽  
Petiole Elongation

Plant Movement and Seed Dispersal of Russian Thistle (Salsola iberica)

Weed Science ◽  
1995 ◽  
Vol 43 (1) ◽  
pp. 63-69 ◽  
Author(s):  
George P. Stallings ◽  
Donald C. Thill ◽  
Carol A. Mallory-Smith ◽  
Lawrence W. Lass
Keyword(s):  
Seed Dispersal ◽  
Individual Plant ◽  
Positioning Systems ◽  
Average Percentage ◽  
Seed Loss ◽  
Adjacent Site ◽  
Wheat Stubble ◽  
Plant Movement ◽  
Eastern Washington ◽  
Salsola Iberica

Russian thistle plant movement and seed dispersal were studied in 1991 and 1992 by placing Russian thistle plants in the center of wheat fields in eastern Washington. Three adjacent site treatments, with 24 plants on each site, were used each year; wheat stubble, summerfallow planted to winter wheat, and a “stationary” site. Plants in the “stationary” site were anchored to the ground to prevent tumbling. Plants in the stubble and summerfallow sites were allowed to tumble naturally. Individual plant movement was monitored and recorded weekly by satellite global positioning systems technology. Average estimated seed number per plant at the beginning of the experiment was 57,400 in 1991 and 66,000 in 1992. The direction plants moved correlated highly with wind direction. Some plants moved a maximum distance of 4069 m in 6 wks, while other plants moved only 60 m because of variable winds and being compressed by snow or frozen into wheat stubble. Average percentage seed loss in 1991 and 1992 for stationary plants was 15 and 26%, and for tumbling plants was 48 and 66%, respectively.

scholarly journals Morphological Response of Soybean (Glycine max (L.) Merr.) Cultivars to Light Intensity and Red to Far-Red Ratio

Agronomy ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 428 ◽  
Author(s):  
Tina Hitz ◽  
Jens Hartung ◽  
Simone Graeff-Hönninger ◽  
Sebastian Munz
Keyword(s):  
Cropping Systems ◽  
Light Emitting Diode ◽  
Red Light ◽  
Photosynthetic Photon Flux Density ◽  
Photon Flux ◽  
Photon Flux Density ◽  
Shade Avoidance ◽  
Internode Elongation ◽  
Morphological Response ◽  
Petiole Elongation

In soybean production, the shade avoidance response can affect yield negatively in both mono- and inter-cropping systems due to increased heterogeneity of the crop and lodging. This is mainly regulated by photoreceptors responding to the ratio between red and far-red light (R:FR) and photosynthetic photon flux density (PPFD). In this study, three soybean cultivars were grown under different R:FR and PPFD in a light emitting diode (LED) climate chamber to disentangle the effect of each on morphology and dry matter. Results showed that plant organs were influenced differently and indicated an interaction with the increase in assimilates at high PPFD. Internode elongation was mainly influenced by low PPFD with an additive effect from low R:FR, whereas petiole elongation responded strongly under low R:FR. Hence, petiole elongation can be seen as the main response to the threat of shade (high PPFD and low R:FR) and both petiole and internode elongation as a response to true shade (low PPFD and low R:FR). Interactions between cultivar and light treatment were found for internode length and diameter and leaf mass ratio, which may be unique properties for specific cropping systems.

Competition between two varieites of subterranean clover (Trifolium subterraneum L.) as related to the proportions of seed sown

1961 ◽  
Vol 12 (5) ◽  
pp. 810 ◽  
Author(s):  
JN Black
Keyword(s):  
Vegetative Growth ◽  
Subterranean Clover ◽  
Trifolium Subterraneum ◽  
Light Energy ◽  
Sampling Occasion ◽  
Large Seed ◽  
Light Intensities ◽  
Petiole Elongation

The Yarloop and Tallaroolr varieties of subterranean clover (Trifolium subterraneum L.) xvere grown in swards in six mixtures, varying from 100% Yarloop/0%, Tallarook to 0% Yarloop/100% Tallarook, to find out whether the suppression of Tallarook by Yarloop consequent upon the greater petiole elongation of yarloop would still occur when only a few Yarloop plants were present. The swards were grown in large seed boxes and were sampled on four occasions during vegetative growth. Leaf areas for each 2 cm layer of the swards were determined separately for the two strains, and light intensities at each layer were measured at each sampling occasion. It was shown that Yarloop plants suppressed Tallarook in all mixtures. The relative amounts of light energy available to the two strains in the mixed swards left no doubt that the suppression of Tallarook was the result of shading by the taller-growing Yarloop plants.

The significance of petiole length, leaf area, and light interception in competition between strains of subterrranean clover (Trifolium subterraneum L.) grown in swards

1960 ◽  
Vol 11 (3) ◽  
pp. 277 ◽  
Author(s):  
JN Black
Keyword(s):  
Leaf Area ◽  
Leaf Development ◽  
Plant Competition ◽  
Subterranean Clover ◽  
Trifolium Subterraneum ◽  
Sampling Period ◽  
Dry Weight ◽  
Petiole Length ◽  
Petiole Elongation ◽  
Light Profiles

Three strains of subterranean clover differing in leaf development were grown in pure swards and in all combinations in mixtures. The strain Yarloop has relatively few large leaves held on long petioles; Tallarook has many small leaves and short petioles; Bacchus Marsh is intermediate in all these respects. The swards were grown in boxes and were sampled on four occasions during the period of vegetative growth. Leaf area in each 2 cm layer of the sward was determined separately, and for both strains in the mixed swards, and measurements of the light intensity reaching each layer were obtained. Root weights were determined for all swards and separately for each component of the mixed swards. Examination of the dry weights showed that the growth of the strain having the lesser petiole elongation was suppressed. In the extreme instance Tallarook was so suppressed when grown with Yarloop that in the final inter-sampling period it grew completely in the dark, and lost about half its dry weight. Bacchus Marsh also suppressed Tallarook, but to a lesser extent, while Bacchus Marsh was itself suppressed in competition with Yarloop. The amount of light energy intercepted by the two components of the mixed swards was calculated from the leaf area and light profiles, and confirmed the importance of the spatial distribution of leaves in plant competition. It was concluded that, in the absence of defoliation, the success of a strain under competition was associated with its potential petiole elongation.

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