scholarly journals Growth analysis and shade experiment with Solanum nigrum L., the black nightshade, a leaf and fruit vegetable in West Java.

1980 ◽  
Vol 28 (4) ◽  
pp. 199-210
Author(s):  
F.T.J.M. Fortuin ◽  
S.W.P. Omta
Keyword(s):  
Growth Analysis ◽  
Total Yield ◽  
Individual Plant ◽  
West Java ◽  
Plant Weight ◽  
Relative Growth ◽  
Solanum Nigrum L ◽  
Total Plant ◽  
Net Assimilation ◽  
Shade Leaves

The cultivation of S. nigrum was studied in West Java. Growth analysis showed that individual plant weight reached 1070 g 113 days after planting. When fruits and leaves were harvested the total yield was 580 g berries/plant (16.5 t/ha) and 28 g leaves/plant (0.8 t/ha). Picking the leaves influenced plant shape, relative growth rate and net assimilation rate. Shading caused a decline in total plant weight and changes in the distribution of biomass; the production of fruits was strongly affected, whereas the production of edible leaves was not affected by 35-60% shade and only moderately affected by 75-85% shade. Leaves from plants grown in shade were larger and thinner than those from plants in full light. There was no indication that the berries were toxic. (Abstract retrieved from CAB Abstracts by CABI’s permission)

A quantitative study of the effects of gibberellic acid on the growth of Festuca arundinacea

1968 ◽  
Vol 19 (2) ◽  
pp. 221 ◽  
Author(s):  
DG Morgan
Keyword(s):  
Gibberellic Acid ◽  
Festuca Arundinacea ◽  
Dry Matter ◽  
Growth Analysis ◽  
Shoot Growth ◽  
Plant Weight ◽  
Matter Production ◽  
Whole Plant ◽  
Total Plant ◽  
Net Assimilation

Single plants of Festuca arundinacea (cv. S170) were treated with gibberellic acid (GA) and the sequence of effects on the growth of the whole plant and of various organs followed by means of growth analysis. The first effect of GA was to change the distribution of dry matter between shoot and root and between tillers within the shoot without affecting total plant weight. Shoot growth was increased and resulted in a larger amount of photosynthetic tissue with a higher net assimilation rate; total plant weight increased as a consequence of these effects. The significance of these results in interpreting previous work on the effects of GA on dry matter production in grasses and other plants is discussed.

SOME DIFFERENCES BETWEEN SOYBEAN CULTIVARS OBSERVED BY GROWTH ANALYSIS

1972 ◽  
Vol 52 (1) ◽  
pp. 13-20 ◽  
Author(s):  
B. R. BUTTERY ◽  
R. I. BUZZELL
Keyword(s):  
Growth Rate ◽  
Leaf Area ◽  
Growth Analysis ◽  
Leaf Growth ◽  
Plant Weight ◽  
Relative Growth ◽  
Glycine Max L ◽  
Transgressive Segregants ◽  
Net Assimilation ◽  
Highly Correlated

Spaced plants of soybean (Glycine max (L.) Merrill) cultivars were subjected to classical growth analysis. Varietal differences in mean net assimilation rate (NAR), relative growth rate (RGR), relative leaf growth rate (RLGR), leaf area ratio (LAR), specific leaf weight (SLW), and shoot/root ratio (S/R) were detected within a group of 21 cultivars grown in three tests over 3 years. Only LAR and SLW differed within another group of 23 cultivars grown in 2 years. Comparisons of cultivars with their parents showed that selection for yield had resulted in increased NAR and SLW, and in decreased LAR, S/R, plant weight, and leaf area. Many of the cultivars were transgressive segregants for higher NAR and SLW and for lower LAR. Phenotypic correlations showed that NAR was highly correlated with SLW and inversely correlated with LAR. SLW might be a useful character for indirect selection of soybean yield.

scholarly journals Growth of weeds in cereal populations

1972 ◽  
Vol 44 (1) ◽  
pp. 19-28 ◽  
Author(s):  
Leila-Riitta Erviö
Keyword(s):  
Chenopodium Album ◽  
Total Yield ◽  
Abundant Species ◽  
Individual Plant ◽  
Seeding Rate ◽  
Stellaria Media ◽  
Plant Weight ◽  
Seed Rate ◽  
Polygonum Convolvulus ◽  
Cereal Seed

The weeds in this study consisted mainly of Chenopodium album, Stellaria media, Viola arvensis, Polygonum convolvulus, P. aviculare and P. lapathifolium. Increasing cereal seed rates reduced the numbers, individual weights and total yields of the most abundant species, Chenopodium album. The decreases in plant weight and total yield of the weeds were very steep when the cereal seed rate was raised from 25 to 200 kg/ha. Increases in the seeding rate reduced the total yields of weeds rather than their numbers. The effect of the cereal on weeds became apparent as soon as heading of the cereal was complete and was further enhanced by prolonged competition. Added nitrogen raised the weed yields at cereal seed rates of 25—100 kg/ha but reduced them at higher seed rates. Nitrogen also raised the yield and individual plant weight of C. album. Cereal seed rate did not affect the nitrogen, phosphorus, potassium, calcium and magnesium contents of the weeds grown among the crop. Due to larger total weed yields, however, the amounts of these nutrients in the weeds were higher in sparse than in dense cereal populations.

scholarly journals Growth analyses of tomato genotypes grown under low energy conditions.

1991 ◽  
Vol 39 (3) ◽  
pp. 191-196 ◽  
Author(s):  
M. Nieuwhof ◽  
F. Garretsen ◽  
J.C. van Oeveren
Keyword(s):  
Leaf Area ◽  
Weight Ratio ◽  
Energy Conditions ◽  
Genotypic Differences ◽  
Low Light ◽  
Strong Negative Correlation ◽  
Plant Weight ◽  
Relative Growth ◽  
Net Assimilation ◽  
Growth Analyses

Growth analyses were carried out on young plants of 15 genotypes, grown initially at 19/14 degrees C day/night temperatures for an 8 h day at low light intensity and subsequently at the night temperatures of 6, 10 and 14 degrees C. Significant genotypic differences occurred for relative growth rate (RGR), net assimilation rate (NAR), leaf area ratio (LAR), specific leaf area (SLA) and leaf weight ratio (LWR). RGR, LAR and SLA increased and LWR decreased at higher night temperatures. A strong negative correlation was observed between NAR and LAR and NAR and SLA whilst a positive correlation was noted between LAR and SLA. Plant weight was strongly influenced by seed size. (Abstract retrieved from CAB Abstracts by CABI’s permission)

scholarly journals Plant Growth Analysis of Jack Been (Canavalia ensiformis L.) at Different Spacing to Determine the Application Time of Cutback Technology

2019 ◽  
Vol 4 (1) ◽  
pp. 1-7
Author(s):  
N. Nurmuliana ◽  
Muh. Akhsan Akib
Keyword(s):  
Growth Rate ◽  
Leaf Area ◽  
Growth Analysis ◽  
Assimilation Rate ◽  
Area Index ◽  
Relative Growth ◽  
Jack Bean ◽  
Canavalia Ensiformis ◽  
Bean Plants ◽  
Net Assimilation

AbstractThe growth of jack bean (Canavalia ensiformis L) is affected by genetic and environmental factors.  One of the environmental factors involved is growing space. Growing space related to each plant of areas occupied is stated by the distance between plants. A Research has been conducted as long three months in dry season with average daily temperature of 25 to 31OC on altitude of 25 to 500 meter, to determine the timing of the application of cutback technology based on an analysis of growth of jack bean plants (Canavalia ensiformis L) in different growth spaces.  The research was conducted in the trial form using a randomized block design. Variables of plants growth analysis observed is leaf area index (LAI), leaf area is computed by gravimetric method; net assimilation rate (NAR), and relative growth rate (RGR) is determined based on the dry weight of plants; in all three rooms grew, namely 75 cm x 100 cm (control), 75 cm × 75 cm and 75 cm × 50 cm, each repeated three times. The result shows that the trend of leaf area index increased at net assimilation rate (g-1.cm-2.week-1) and relative growth rate (g-1.g-1.minggu-1) decreasing at the time the plant to the age 8 weeks after planting.  The best time for the application of reduction technology to jack bean plants (Canavalia ensiformis L) in all tested growing spaces, is recommended when plants are between 7 and 8 weeks after planting

scholarly journals Comparative Growth Analysis of two Varieties of Rice Following Naphthalene Acetic Acid Application

2011 ◽  
Vol 35 (1) ◽  
pp. 113-120 ◽  
Author(s):  
Nargis Jahan ◽  
AMM Golam Adam
Keyword(s):  
Acetic Acid ◽  
Dry Matter ◽  
Growth Analysis ◽  
Early Stage ◽  
Naphthalene Acetic Acid ◽  
Assimilation Rate ◽  
Relative Growth ◽  
Number Of Leaves ◽  
Net Assimilation ◽  
Academy Of Sciences

A pot experiment showed that 100 and 200 ppm naphthalene acetic acid (NAA) plant height, number of leaves per plant and number of tillers per plant were found to increase due to 100 ppm NAA only in BRRI dhan-29 (V1) and varied significantly at 60 DAS. Total dry matter (TDM) was found to increase up to harvest due to both the treatments in V1, whereas, in BRRI dhan-50 (V2) also increased at 15 and 30 DAS and the variation was non-significant. There was an increasing tendency in leaf area per plant due to T1 treatment in both the varieties except at 45 DAS in V2. Significant variations were observed at 15 and 30 DAS only in V1. Relative growth rate (RGR) was maximum at early stage of growth and then declined in both the varieties. RGR was significant during 0 to15 and 45 to 60 DAS in case of V1. Net assimilation rate (NAR) was non-significantly affected and found to increase during 15 to 30 DAS following both the treatments in V1, but in V2 due to T2 treatment only. Out of the two concentrations 100 ppm NAA produced better stimulation.DOI: http://dx.doi.org/10.3329/jbas.v35i1.7976Journal of Bangladesh Academy of Sciences, Vol.35, No.1, 113-120, 2011

COMPARISON OF SEEDLING GROWTH OF ROUGH FESCUE AND TALL FESCUE

1969 ◽  
Vol 49 (4) ◽  
pp. 465-470
Author(s):  
D. B. Wilson ◽  
A. Johnston
Keyword(s):  
Tall Fescue ◽  
Growth Rates ◽  
Festuca Arundinacea ◽  
Growth Analysis ◽  
Dry Weight ◽  
Native Grass ◽  
Relative Growth ◽  
Relative Growth Rates ◽  
Net Assimilation ◽  
Rough Fescue

Seedlings of a native grass, rough fescue, Festuca scabrella Torr., and of a tame grass, tall fescue, Festuca arundinacea Schreb., were grown in the greenhouse for 10 weeks. Each week 20 plants of each species were destructively harvested for growth analysis. Leaf and tiller numbers and leaf lengths were recorded for an additional 10 plants of each species. Mean net assimilation rates of rough fescue were similar to those of tall fescue, but leaf area ratios were significantly lower. Thus, mean relative growth rates of rough fescue were less than those of tall fescue. Tiller numbers were similar for both species but rough fescue produced fewer leaves. Dry weight of tops of the tame grass produced during the 10-week period was about 17 times that produced by the native grass.

EFFECT OF DAYLENGTH ON THE GROWTH OF WHEAT

1967 ◽  
Vol 45 (1) ◽  
pp. 117-131 ◽  
Author(s):  
D. J. C. Friend ◽  
V. A. Helson ◽  
J. E. Fisher
Keyword(s):  
Leaf Area ◽  
Dry Weight ◽  
Area Ratio ◽  
Leaf Area Ratio ◽  
Relative Growth ◽  
Stages Of Growth ◽  
Total Plant ◽  
Number Of Leaves ◽  
Net Assimilation ◽  
Daily Total

Leaf area per plant, total number of leaves and tillers, and total plant dry weight increased with increasing daylength over the range 8 to 24 h. The increase in the net assimilation rate and relative growth rate with increasing daily total radiation was similar to that obtained by raising the intensity of light given to plants grown under continuous illumination.During the vegetative phase of growth, the leaf area ratio decreased with increasing daylength, mostly because of an increased leaf thickness, again dependent on the level of total daily radiation. During the later stages of growth, earlier floral initiation at long daylengths caused an early decline in the leaf area ratio because of the rapid growth of the stem associated with inflorescence formation. This was a photoperiodic effect independent of the level of total daily radiation, as shown by supplementing an 8-h daylength with 8 h of low-intensity illumination.

scholarly journals Quantitative Analysis of Greenhouse Kohlrabi (Brassica oleracea var. gongylodes L.) Growing

2017 ◽  
Vol 5 (2) ◽  
Author(s):  
Harun Özer ◽  
Mehtap Özbakır Özer ◽  
Ahmet Balkaya
Keyword(s):  
Growth Rate ◽  
Leaf Area ◽  
Dry Weight ◽  
Area Ratio ◽  
Assimilation Rate ◽  
Sowing Time ◽  
Relative Growth ◽  
Total Plant ◽  
Seed Sowing ◽  
Net Assimilation

This study were carried out to of different sowing time in order to determine the effects on plant growth of kohlrabi cultivation under Samsun condaitions during the autumn growing periods in unheated greenhouse. Four different seed sowing times (1st September, 15th September 1st October, 15th October), two different kohlrabi cultivars (Kolibri F1 and Korist F1) and two mulch applications (mulch covered and uncovered) were used in this study.The plant growth parameters analyzed (total plant dry weight, leaf area ratio, specific leaf area, net assimilation rate and relative growth rate) were found statistically significant (p<0.05). The highest total plant dry weight (114.1 g) was obtained from mulch application and 1st September seed sowing time. The highest leaf area ratio value were obtained in both mulch application the Kolibri F1 variety grown on October 15th. The highest net assimilation rate (0.65 g cm-2 day-1*1000) and relative growth rate (0.0090 g g day-1) were obtained from mulch covered plants grown in Kolibri varieties during September 1st. As a result, in this study higher dry matter accumulation was achieved by 1st September seed sowing times in vegetable growing in the last season in the greenhouse. In this way, the plants have successfully grown up and increased their productivity by entering the winter months, when the temperature and light intensity are decreasing.

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