scholarly journals Some Effects of Temperature on Carbohydrate Utilization and Plant Growth

1966 ◽  
Vol 19 (4) ◽  
pp. 711 ◽  
Author(s):  
RL Burt
Keyword(s):  
Plant Growth ◽  
Photosynthetic Rate ◽  
Crop Plants ◽  
Net Assimilation Rate ◽  
Assimilation Rate ◽  
Carbohydrate Utilization ◽  
Present Evidence ◽  
Effects Of Temperature ◽  
Net Assimilation

Present evidence suggests that, in a wide variety of crop plants, growth and net assimilation rate may be determined by the ability of the plant to utilize or store the products of photosynthesis rather than by the capacity of the assimilatory surface to produce them (Humphries 1963; Humphries and Thorne 1964; Thorne and Evans 1964; Burt 1964). Humphries (1963) further suggests that temperature, by varying the ability of the plant to utilize the assimilate, may partly govern the photosynthetic rate of the plant.

scholarly journals Analysis of Plant Growth and Yield in Varieties of Tomato (Solanum lycopersicum L.) Grafted onto Different Eggplant Rootstocks

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Evy Latifah ◽  
Amik Krismawati ◽  
Mohammad Saeri ◽  
Zainal Arifin ◽  
Bas Warsiati ◽  
...  
Keyword(s):  
Growth Rate ◽  
Plant Growth ◽  
Leaf Area ◽  
Relative Growth Rate ◽  
Net Assimilation Rate ◽  
Growth And Yield ◽  
Assimilation Rate ◽  
Relative Growth ◽  
Tomato Plants ◽  
Net Assimilation

This study aimed to examine plant growth of tomato grafted onto different eggplant rootstocks. We applied a randomized block design comprising twelve treatments with three replicates. Three varieties of tomato—Cervo, Karina, and Timoty—and three rootstocks—Gelatik, EG203 line, and Solanum torvum—were selected for this study. Nongrafted tomato plants of the same varieties were used as controls. The variables recorded were the number of branches, the diameter of scions and rootstocks, root length, and root dry weight at 4, 6, 8, and 10 weeks after planting (WAT) and relative growth rate, specific leaf area, and net assimilation rate at 4, 8, and 12 WAT. Grafted tomato plants demonstrated better growth than controls. There was a significant relationship between yield, plant growth parameters, and photosynthetic organs, expressed by higher production, greater scion diameter, longer roots, and increased relative growth rate, leaf area ratio, and net assimilation rate of grafted plants, compared to the controls.

scholarly journals Impact of water deficit stress on biomass production of different gladiolus cultivars under rainfed condition

2015 ◽  
pp. 10-13
Author(s):  
Ranjan Das, Kaushik Bhagawati, Alpana Boro, Tulika Medhi
Keyword(s):  
Plant Growth ◽  
Leaf Area ◽  
Water Deficit ◽  
Biomass Production ◽  
Crop Production ◽  
Net Assimilation Rate ◽  
Water Deficit Stress ◽  
Assimilation Rate ◽  
Leaf Area Duration ◽  
Net Assimilation

Among the environmental stresses, water deficit stress was recognized to be one of the most adverse factors for plant growth and productivity. The study aimed to comparatively evaluate impact of water deficit stress on biomass of seven cultivars of gladiolus in terms of leaf area duration and net assimilation rate under rainfed conditions in northeastern region of India. Also, productions in terms of marketable spikes were compared. The parameters were measured using standard procedures. Comparatively higher leaf area duration (116 days) and net assimilation rate were found in cultivars Aarti (116 days and1.62 gcm-2day-1x10-3 respectively) and Suchitra (98.0 days and 1.10 gcm-2day-1x10-3) which account for their higher biomass production with larger spike size with good numbers of flowers. The highest marketable spikes (71111.11 spikes ha-1) was found in cultivar Aarti followed by Suchitra (68148.14 spikes ha-1) which might be due to its comparatively higher biomass production and less deviation, during stress condition, from normal characteristics. The tolerant cultivars are those that can adapt to the change without much change in their normal growth. And the responses of those species are commercially acceptable that promote adaptation without compromising much with the plant growth and crop production.

scholarly journals Functional growth analysis of diploid potato cultivars (Solanum phureja Juz. et Buk.)

2020 ◽  
Vol 14 (3) ◽  
pp. 402-415
Author(s):  
Tatiana María Saldaña-Villota ◽  
José Miguel Cotes-Torres
Keyword(s):  
Plant Growth ◽  
Leaf Area ◽  
Growth Analysis ◽  
Potato Cultivars ◽  
Net Assimilation Rate ◽  
Diploid Potato ◽  
Assimilation Rate ◽  
Degree Days ◽  
Net Assimilation ◽  
Accumulated Degree Days

Plant growth analysis has been widely used to study factors that influence plant growth. This analysis uses a set of quantitative methods that describe and analyze the growth of plants and their organs. It uses data from direct measurements (weight, area, volume) and quantifies and analyzes growth using indexes based on models defined by mathematical functions. This study conducted a functional growth analysis of diploid potato cultivars in Colombia. The functional growth analysis of diploid potato cultivars was carried out over three consecutive growing seasons in Medellín, Colombia. A randomized block design was used with two levels of fertilization and five repetitions. The first factor corresponded to the three potato cultivars, and the second factor was two fertilization levels: 260 and 778 kg of fertilizer per hectare. Samples were taken weekly, and each sample was an entire plant per experiment unit. The dry weight of each organ and the leaf area were measured. These measurements were used to calculate the relative growth rate, leaf area ratio, net assimilation rate, and specific leaf area. The development time was evaluated in accumulated degree-days with threshold temperatures of 2 and 29°C. The three cultivars recorded their highest net assimilation rate at 1,252 accumulated degree days (ADD), with values of 0.0002565, 0.0002021, and 0.0001778 g cm-2 ADD-1 in the ‘Latina’, ‘Guaneña’, and ‘Colombia’ cultivars, respectively. The Latina cultivar stood out in several physiological characteristics, including the fastest developing cultivar. ‘Latina’ also had the highest total dry mass accumulated in the cycle (271.05 g) and accumulated dry matter in tubers (237 g).

TEMPERATURE IN RELATION TO GROWTH AND NET ASSIMILATION RATE OF OATS

1966 ◽  
Vol 46 (4) ◽  
pp. 397-404 ◽  
Author(s):  
N. C. Stoskopf ◽  
H. R. Klinck ◽  
H. A. Steppler
Keyword(s):  
Dry Matter ◽  
Total Yield ◽  
Net Assimilation Rate ◽  
Similar Response ◽  
Assimilation Rate ◽  
Effects Of Temperature ◽  
The Difference ◽  
Net Assimilation ◽  
Response To Temperature ◽  
Linear Decline

The effects of temperature variations in the microclimate on two oat varieties were investigated in relation to the growth of this crop as measured by total dry matter and net assimilation rate (N.A.R.). A significant correlation of + 0.691 was obtained between N.A.R. and the difference between day and night temperatures measured on the ground within the plot. Highest N.A.R. values were obtained in material from the fourth (May 29) of the six dates of seeding, when the lowest leaf area was found. Highest yields were not found at this date, as total yield was a function of rate and duration of photosynthesis. A linear decline in grain yield from early to late seeding occurred in 1961 while no differences were observed in 1960. A regression analysis of N.A.R. on the differences between the day and night temperatures revealed that both varieties had a similar response to temperature.

scholarly journals GROWTH ANALYSIS OF SOYBEAN UNDER DRY LAND WITH APPLICATION OF Bradyrhizobium japonicum INDUCED BY GENISTEIN AND ORGANIC FERTILIZER

2015 ◽  
Vol 2 (2) ◽  
pp. 116-123
Author(s):  
Yaya Hasa
Keyword(s):  
Growth Rate ◽  
Plant Growth ◽  
Block Design ◽  
Organic Fertilizer ◽  
Net Assimilation Rate ◽  
Induction Treatment ◽  
Assimilation Rate ◽  
Dry Land ◽  
Randomized Block Design ◽  
Net Assimilation

This study aimed to get the information of soybean growth response on inoculation of B. japonicum induced genistein under dry land. The experiment was conducted in farmer fields at Desa Sambirejo, Langkat on June-September 2012. The study used a factorial randomized block design with two factors and three replications. The first factor is genistein induction treatment consisting of without and genistein (50 μM). The second factor is the treatment of B. japonicum and organic fertilizer consisted of without B. japonicum; B. japonicum; B. japonicum + manure 10 t/ha; B. japonicum straw compost + 10 t/ha; B. japonicum + manure 5 t/ha + straw compost 5 t /ha. The variables observed are plant growth rate, plant growth relative and net assimilation rate. The results showed that the treatment of genistein (50 μM) decreased the plant growth rate 5-6 WAP, plant growth relative 5-6 WAP and net assimilation rate. Treatment of B. japonicum + manure 5 t/ ha + straw compost 5 t/ ha tent to increase plant growth rate, plant growth relative and net assimilation rate. The interaction between genistein induction and treatment B. japonicum + organic fertilizer tended to decrease plant growth rate, plant growth relative and net assimilation rate.

Effects of Temperature and CO2Concentration on the Growth of Cotton (Gossypium hirsutum), Spurred Anoda (Anoda cristata), and Velvetleaf (Abutilon theophrasti)

Weed Science ◽  
1988 ◽  
Vol 36 (6) ◽  
pp. 751-757 ◽  
Author(s):  
David T. Patterson ◽  
Maxine T. Highsmith ◽  
Elizabeth P. Flint
Keyword(s):  
Dry Matter ◽  
Dry Weight ◽  
Net Assimilation Rate ◽  
Assimilation Rate ◽  
Short Term ◽  
Leaf Weight ◽  
Matter Production ◽  
Total Plant ◽  
Net Assimilation ◽  
Total Dry Weight

Cotton, spurred anoda, and velvetleaf were grown in controlled-environment chambers at day/night temperatures of 32/23 or 26/17 C and CO2concentrations of 350 or 700 ppm. After 5 weeks, CO2enrichment to 700 ppm increased dry matter accumulation by 38, 26, and 29% in cotton, spurred anoda, and velvetleaf, respectively, at 26/17 C and by 61, 41, and 29% at 32/23 C. Increases in leaf weight accounted for over 80% of the increase in total plant weight in cotton and spurred anoda in both temperature regimes. Leaf area was not increased by CO2enrichment. The observed increases in dry matter production with CO2enrichment were caused by increased net assimilation rate. In a second experiment, plants were grown at 350 ppm CO2and 29/23 C day/night for 17 days before exposure to 700 ppm CO2at 26/17 C for 1 week. Short-term exposure to high CO2significantly increased net assimilation rate, dry matter production, total dry weight, leaf dry weight, and specific leaf weight in comparison with plants maintained at 350 ppm CO2at 26/17 C. Increases in leaf weight in response to short-term CO2enrichment accounted for 100, 87, and 68% of the observed increase in total plant dry weight of cotton, spurred anoda, and velvetleaf, respectively. Comparisons among the species showed that CO2enrichment decreased the weed/crop ratio for total dry weight, possibly indicating a potential competitive advantage for cotton under elevated CO2, even at suboptimum temperatures.

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