Gas exchange characteristics and dry matter accumulation of soybean treated with Nod factors

2007 ◽  
Vol 164 (10) ◽  
pp. 1391-1393 ◽  
Author(s):  
Juan Jose Almaraz ◽  
Xiaomin Zhou ◽  
Alfred Souleimanov ◽  
Donald Smith
Keyword(s):  
Gas Exchange ◽  
Dry Matter ◽  
Dry Matter Accumulation ◽  
Nod Factors ◽  
Gas Exchange Characteristics

scholarly journals Effect of biostimulants on dry matter accumulation and gas exchange in plantain plants (Musa AAB)

2019 ◽  
Vol 13 (2) ◽  
pp. 151-160
Author(s):  
Diana Mateus-Cagua ◽  
Gustavo Rodríguez-Yzquierdo
Keyword(s):  
Gas Exchange ◽  
Dry Matter ◽  
Photosynthetic Activity ◽  
Leaf Gas Exchange ◽  
Block Design ◽  
Dry Matter Accumulation ◽  
Vegetative Phase ◽  
Physiological Processes ◽  
Randomized Complete Block Design ◽  
Positive Effect

Biostimulants can potentially improve plant growth and development, modifying physiological processes. This study evaluated the effect of four biostimulants on the growth of ‘Hartón’ plantain plants and the leaf gas exchange during the vegetative phase. This experiment was developed on a plantain farm’s nursery in Fuente de Oro (Colombia) with a randomized complete block design with four replicates. The treatments were the biostimulants: Bactox WP®: Bacillus subtilis (Bs); Baliente®: Bacillus amyloliquefaciens (Ba); Tierra Diatomeas®: silicon dioxide (Si); Re-Leaf®: salicylic acid (SA) and the control (water). All products had a positive effect on the accumulation of total dry matter (DM) (between 58.4 and 21.9%) and on the photosynthetic activity (a maximum of 110 and 24.3% in first and second evaluation), as compared to the control, while no differences were found (P>0.05) for the foliar emission rate and chlorophyll content between the treatments. The plants treated with Bs had the greatest DM accumulation at the end of the study and a constant, high photosynthetic activity. All the while Bs, Ba and Si managed to stimulate greater early photosynthetic activity. According to the results, the use of these biostimulants during the vegetative phase had an effect on the physiological processes that enhance DM accumulation in plantain plants, which could be potentially useful for the transplanting stage and increase the reserves used during their establishment and development in the field.

Gas Exchange and Dry Matter Accumulation during Leaf Development

1985 ◽  
pp. 157-216 ◽  
Author(s):  
Ingrid Tichá ◽  
J. Čatský ◽  
Damuše Hodáňová ◽  
Jana Pospišilivá ◽  
M. Kaše ◽  
...  
Keyword(s):  
Gas Exchange ◽  
Leaf Development ◽  
Dry Matter ◽  
Dry Matter Accumulation

Leaf gas exchange, chloroplastic pigments and dry matter accumulation in castor bean (Ricinus communis L) seedlings subjected to salt stress conditions

2008 ◽  
Vol 27 (3) ◽  
pp. 385-392 ◽  
Author(s):  
Hugo Alves Pinheiro ◽  
José Vieira Silva ◽  
Laurício Endres ◽  
Vilma Marques Ferreira ◽  
Celene de Albuquerque Câmara ◽  
...  
Keyword(s):  
Salt Stress ◽  
Gas Exchange ◽  
Castor Bean ◽  
Dry Matter ◽  
Ricinus Communis ◽  
Leaf Gas Exchange ◽  
Stress Conditions ◽  
Dry Matter Accumulation ◽  
Ricinus Communis L ◽  
Chloroplastic Pigments

Population differences in water-use efficiency of well-watered and water-stressed western larch seedlings

1994 ◽  
Vol 24 (1) ◽  
pp. 92-99 ◽  
Author(s):  
Jianwei Zhang ◽  
John D. Marshall
Keyword(s):  
Gas Exchange ◽  
Water Use Efficiency ◽  
Water Use ◽  
Dry Matter ◽  
Genotypic Differences ◽  
Dry Matter Accumulation ◽  
Population Differences ◽  
Western Larch ◽  
Use Efficiency

Gas exchange, water-use efficiency (WUE), and carbon-isotope discrimination (Δ) were compared among 14 populations of western larch (Larixoccidentalis Nutt.), a deciduous conifer. Seedlings grown from seed collected across the natural distribution of the species were maintained under water-stressed and well-watered conditions. No differences in gas exchange or instantaneous water-use efficiency (WUEi) were detected among populations. However, population differences in Δ, a second measure of water-use efficiency, were observed. WUE measured as the rate of dry matter accumulation per cumulative water transpired (WUET) was different among populations at the P = 0.07 level. The three measures of WUE were intercorrelated and all were higher among water-stressed seedlings than among well-watered seedlings. Overall means were 4.30 ± 0.08 (± SE) and 3.61 ± 0.07 g dry matter accumulation per kg water transpired (WUET), 2.80 ± 0.09 and 2.02 ± 0.06 μmol CO2 uptake per μmol H2O transpired (WUEi), and Δ was 18.24 ± 0.08‰ and 20.26 ± 0.10‰ under the water-stressed and well-watered treatments, respectively. Population differences in the two integrated measurements, WUET and Δ, were significantly correlated with the altitude at which seed was collected. No interaction between genotype and watering treatment was observed, which means that despite pronounced shifts in WUE between watering treatments, population rankings remained unchanged. These results provide evidence of genotypic differences in long-term measures of WUE among native populations of western larch.

Micropropagated bananas are more susceptible to fusarium wilt than plants grown from conventional material

1998 ◽  
Vol 49 (7) ◽  
pp. 1133 ◽  
Author(s):  
A. W. Whiley ◽  
C. Searle ◽  
K. G. Pegg ◽  
M. K. Smith ◽  
P. W. Langdon ◽  
...  
Keyword(s):  
Gas Exchange ◽  
Fusarium Oxysporum ◽  
Fusarium Wilt ◽  
Dry Matter ◽  
Leaf Gas Exchange ◽  
Dry Matter Accumulation ◽  
Planting Material ◽  
Micropropagated Plants ◽  
Conventional Material ◽  
Race 4

The reaction of field-grown micropropagated bananas, Musa cv. Williams (AAA, Cavendish subgroup) and cv. Goldfinger (AAAB, FHIA-01), to subtropical race 4 Fusarium oxysporum f. sp. cubense (Foc) was compared with the reaction of plants grown from conventional planting material (sections of the rhizome, termed bits). Leaf gas exchange of plants was determined, and growth and dry matter accumulation were measured. Comparisons were made among these parameters from shortly after planting, throughout winter, and into spring when a high percentage of the plants started to show external symptoms of fusarium wilt. Micropropagated bananas were significantly more susceptible to race 4 Foc than plants derived from bits. This was irrespective of planting times, cultivars used, or whether the bits had first been established in containers in the glasshouse (as for micropropagated plants) or been planted directly in the field. This greater susceptibility does not appear to be a consequence of differences in maximum photoassimilation rates, greater photoassimilate demand, or lack of carbohydrate reserves once plants became established.

scholarly journals IS Annona emarginata CAPABLE OF ACCUMULATE ESSENTIAL HEAVY METALS WITHOUT DAMAGES IN THE METABOLISM?

2017 ◽  
Vol 39 (4) ◽  
Author(s):  
DANIEL BARON ◽  
AMANDA CRISTINA ESTEVES AMARO ◽  
ANA CLAUDIA MACEDO ◽  
CARMEN SÍLVIA FERNANDES BOARO ◽  
GISELA FERREIRA
Keyword(s):  
Heavy Metals ◽  
Ionic Strength ◽  
Gas Exchange ◽  
Vegetative Growth ◽  
Dry Matter ◽  
Ionic Concentration ◽  
Dry Matter Accumulation ◽  
Gas Exchanges ◽  
Positive Effects ◽  
Strength Variation

ABSTRACT This study aimed to evaluate if ionic strength variation causes differential accumulation of heavy metals in plants of Annona emarginata (Schltdl.) H. Rainer var. ‘terra-fria’, modifying gas exchange and dry matter production. The seedlings were cultivated under different ionic strengths of the ‘Hoagland and Arnon’s’ nutrient solution (75% I, 50% I and 25% I). At 180 days after the application of the treatments, the effects of the essential heavy metals on the physiological parameters and foliar ionic concentration were assessed. The leaf gas exchanges and vegetative growth were affected by the variation in the essential heavy metals, with positive effects on the plants that were treated with 75%I. The seedlings that were grown under 75% I presented higher concentrations of Zn (24.2mg kg-1). On the other hand Fe (453mg kg-1) e Mn (803.5mg kg-1) accumulated more under 25% I, but gas exchanges and vegetative growth were reduced, compared to 50%I and 75%I. We can conclude that the ionic strength variation alters gas exchange and the dry matter accumulation, causing differential accumulation of Fe, Mn and Zn in A. emarginata, occurring inverse relationship between increased ionic strength and Fe and Mn content, besides directly relationship to the Zn content.

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