scholarly journals Plant growth rates and seed size: a re-evaluation

Ecology ◽  
2012 ◽  
Vol 93 (6) ◽  
pp. 1283-1289 ◽  
Author(s):  
Lindsay A. Turnbull ◽  
Christopher D. Philipson ◽  
Drew W. Purves ◽  
Rebecca L. Atkinson ◽  
Jennifer Cunniff ◽  
...  
Keyword(s):  
Plant Growth ◽  
Seed Size ◽  
Growth Rates

scholarly journals Seed size and adventitious (nodal) roots as factors influencing the tolerance of wheat to waterlogging

2003 ◽  
Vol 54 (10) ◽  
pp. 969 ◽  
Author(s):  
D. K. Singh ◽  
V. Singh
Keyword(s):  
Plant Growth ◽  
Oxygen Concentration ◽  
Seed Size ◽  
Growth Rates ◽  
Plant Biomass ◽  
Seed Mass ◽  
Root Mass ◽  
Wheat Cultivars ◽  
Seedling Mortality ◽  
Nodal Roots

In a glasshouse study, two experiments were conducted to understand how inherent variability, such as the seed size or mass, and formation of adventitious nodal roots might influence the tolerance of various wheat and triticale cultivars at different growth stages to waterlogging. Waterlogging at germination resulted in 11% seedling mortality, but the waterlogged seedlings had a 19% increase in shoot mass per plant, with no difference in root mass compared with non-waterlogged seedlings. Waterlogging at the 3-leaf stage was deleterious to only a few cultivars. On average, larger seed resulted in greater plant growth for most of the cultivars, and seed mass was positively related to the plant biomass and adventitious nodal root mass under waterlogged conditions. A decreasing oxygen concentration with increasing duration of waterlogging and soil depth did not affect the plant growth and visual stress symptoms, chlorosis, until the oxygen concentration decreased to less than 10% in the bottom depths. The highest yielding triticale cultivar, Muir, and wheat cultivars Brookton and Frame had the greatest seed mass, plant biomass, and relative growth rates under waterlogged conditions, compared with the lowest yielding wheat cultivars, Amery, Silverstar, and More. However, the degree of 'waterlogging tolerance', expressed as the percent ratio of plant biomass or growth rates under waterlogged conditions relative to the non-waterlogged control conditions, appeared to be greatest for the low-yielding cultivars, indicating a 'cautious approach' when screening tolerant cultivars.

Seed size influences the promoting activity of rhizobia on plant growth, nodulation and N fixation in lima bean

2021 ◽  
Vol 51 (3) ◽  
Author(s):  
Claudyanne do Nascimento Costa ◽  
Jadson Emanuel Lopes Antunes ◽  
João Pedro Alves de Aquino ◽  
Ingrid Sthephanie da Costa Silva ◽  
Angela Celis de Almeida Lopes ◽  
...  
Keyword(s):  
Plant Growth ◽  
Seed Size ◽  
Reference Strain ◽  
Dry Weight ◽  
Lima Bean ◽  
N Fixation ◽  
Nodule Number ◽  
Root Dry Weight ◽  
Biological N Fixation

ABSTRACT: This study evaluated the activity of rhizobia isolates inoculated in large (18 mm) and small (11 mm) seeds on lima bean growth, nodulation and N fixation. Selected rhizobia isolates were compared with a reference strain CIAT899 and two controls without inoculation. Large seeds contributed for highest plant growth, nodulation and N fixation than small seeds. The isolates UFPI-59, UFPI-18 and UFPI-38 promoted the highest values of shoot and root dry weight, respectively. The isolates UFPI-32 promoted the highest values of nodule number, while UFPI-59 promoted the highest values of nodule dry weight. The isolates UFPI-38 and UFPI-59 promoted the highest accumulation of N. This study showed that seed size really influences lima bean growth, nodulation and BNF. Considering rhizobia isolates, UFPI-59, UFPI-38, and UFPI-18 contributed for plant growth, promoted better nodulation and effectiveness on biological N fixation.

scholarly journals All roads lead to growth: imaging-based and biochemical methods to measure plant growth

2019 ◽  
Vol 71 (1) ◽  
pp. 11-21 ◽  
Author(s):  
Justyna Jadwiga Olas ◽  
Franziska Fichtner ◽  
Federico Apelt
Keyword(s):  
Plant Growth ◽  
Growth Rates ◽  
Shoot Growth ◽  
Comprehensive Description ◽  
Vegetative Plant ◽  
Biochemical Methods

We provide a comprehensive description and comparison of the various imaging and non-imaging-based techniques used to measure vegetative plant shoot growth and suggest a terminology for growth rates.

Effects of Maturation Environment on Seed Size and Subsequent Plant Growth in Peas (Pisum sativum)

1983 ◽  
Vol 19 (4) ◽  
pp. 333-336 ◽  
Author(s):  
K. Kant ◽  
B. Sharma ◽  
M. C. Tyagi
Keyword(s):  
Pisum Sativum ◽  
Plant Growth ◽  
Plant Height ◽  
Seed Size ◽  
Environmental Conditions ◽  
Days To Flowering ◽  
Single Location

SUMMARYMaturation of peas in cool temperatures (mean 17.5°C) at Dalang Maidan, Lahaul (in the Himalayas) led to the development of larger seeds in comparison to those of the same varieties which had matured in warmer temperatures (mean 24.5°C) at Delhi, India. The larger seeds from Lahaul, when sown at Delhi, gave rise to taller plants which came into flower earlier compared with those from the seeds matured at Delhi. Significant location ′ variety interactions were recorded for germination and plant height. Inherent variation in days to flowering could have been a major factor in these interactions. These data are of direct importance to breeders using seeds developed at more than a single location if environmental conditions differ appreciably.

scholarly journals WATER VAPOR TRANSMISSION RATES OF CELGARD® D-304 MICROPOROUS, POLYPROPYLENE FILMS

HortScience ◽  
1992 ◽  
Vol 27 (11) ◽  
pp. 1175h-1176
Author(s):  
Laura Dellevigne ◽  
Peter Vergano ◽  
Lee Wiles ◽  
Andy Hale ◽  
Jeff Adelberg
Keyword(s):  
Water Vapor ◽  
Plant Growth ◽  
Growth Rates ◽  
Membrane Rafts ◽  
Polypropylene Film ◽  
Factors Affecting ◽  
Transmission Rates ◽  
Water Vapor Transmission ◽  
Micropropagated Plants ◽  
Growth Experiments

Commercially produced membrane rafts containing Celgard D-304 microporous, polypropylene film are used to support the growth of micropropagated plants in liquid media. This method is used because growth experiments using membranes resulted in plant growth rates equal to or greater than those grown on agar. Inconsistent results of plant growth on these rafts led to an interest in measuring the water vapor transmission rates (WVTR) of the membranes. A modified WVTR test (ASTM E96-80) was used on 15 raft samples. Results showed that the supplier's value of 49.2 g/m2 ·hr falls within the range of measured values of 39.2 to 54.8 g/m2·hr. Inconsistencies in growth of micropropagated plants may not be due to variability in the WVTR of the Celgard film. It is possible that the WVTR of the film is not the most important factor in facilitating liquid nutrient transport across the membrane. Other properties of the film need to be measured to determine factors affecting growth rates observed.

scholarly journals Pre-transplant Root Ball Condition Influences Growth of Plumbago During Establishment

2007 ◽  
Vol 17 (4) ◽  
pp. 486-490 ◽  
Author(s):  
Sudeep Vyapari ◽  
S.M. Scheiber ◽  
E.L. Thralls
Keyword(s):  
Plant Growth ◽  
Growth Rates ◽  
Dry Weight ◽  
Total Biomass ◽  
Biomass Growth ◽  
Root Dry Weight ◽  
Shoot Dry Weight ◽  
Canopy Size

Three root ball conditions—nonroot-bound (NRB), root-bound (RB), and root-bound sliced (RBS)—were evaluated for their effect on plant growth of plumbago (Plumbago auriculata) during establishment and postestablishment in the landscape. At transplant, NRB plants were smaller than other treatments. Canopy size, shoot dry weight, root dry weight, and total biomass growth rates were faster for NRB plants compared with RB or RBS. By 6 and 8 weeks after transplanting, respectively, biomass and canopy size were similar among treatments. Rootbound and RBS plants were similar indicating root ball slicing does not affect growth in the landscape.

Subalpine plants show short-term positive growth responses to experimental warming and fire

2009 ◽  
Vol 57 (6) ◽  
pp. 465 ◽  
Author(s):  
Frith C. Jarrad ◽  
Carl-Henrik Wahren ◽  
Richard J. Williams ◽  
Mark A. Burgman
Keyword(s):  
Plant Growth ◽  
Climate Warming ◽  
Growth Rates ◽  
Growth Forms ◽  
Growth Responses ◽  
Short Term ◽  
Widespread Species ◽  
Relative Growth ◽  
Relative Growth Rates ◽  
Positive Growth

Climate warming has the potential to directly affect plant growth rates by accelerating plant processes, and through intermediate affects associated with increased length of the growing season and changes to soil processes. Alpine and subalpine ecosystems may be particularly vulnerable to climate warming because species are adapted to a cold environment and have limited upslope refugia in Australia. In the present study, the vegetative growth of seven subalpine open-heath species was examined in response to 3 years of warming and a wildfire. The warming experiment was established in late 2003 on the Bogong High Plains, Australia, using the protocols of the International Tundra Experiment (ITEX). During the growing seasons (snow-free periods) in 2004/2005 and 2005/2006 leaves and stems were monitored on common or widespread species from each of the major vascular plant growth forms. Plants were monitored inside and outside passively warmed open-topped chambers, at sites that were burnt in early 2003 and sites that escaped fire. In the short-term, warming had significant positive relationships with relative growth rates of three species, including Celmisia pugioniformis (forb; P = 0.09), Carex breviculmis (graminoid; P = 0.004) and Asterolasia trymalioides (shrub; P = 0.02). Burning had significant positive effects (P < 0.05) on the relative growth rates of two of these species, C. pugioniformis and C. breviculmis, as well as for Plantago euryphylla, Poa hiemata and Pimelea alpina. For P. euryphylla and P. alpina, the interaction of warming and burning showed significant relationships with relative growth rates, a negative relationship in P. euryphylla (P = 0.03) and a positive relationship in P. alpina (P = 0.07). Year and season were also found to affect the relative growth rates of most species (P < 0.05). These findings agree with previous northern hemisphere ITEX and other warming experiment results; that is, warming has a positive effect on species’ growth responses. In the present study, it is likely that continued climate warming may result in positive growth responses in other subalpine species across growth forms. Our findings emphasise the value of examining multiple species in climate-change studies.

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