scholarly journals Effect of Seed Mass on Germination and Seedling Vigour of Parkia Timoriana (DC.) Merr.

2016 ◽  
Vol 4 (2) ◽  
pp. 171-178 ◽  
Author(s):  
Uttam Thangjam ◽  
U. K Sahoo
Keyword(s):  
Growth Rate ◽  
Seed Weight ◽  
Growth Parameters ◽  
Seed Mass ◽  
Dry Weight ◽  
Garden Soil ◽  
Weight Class ◽  
Seedling Vigour ◽  
Average Growth ◽  
Seedling Length

Seeds of Parkia tiamoriana show both intra specific and inter specific variation in seed weight. A research was carried out to study the effect of seed mass on germination and early growth parameters of the species. Mature seeds were collected from Sakawrtuchung provenance of Mizoram (India). They were then bulked and grouped into 3 categories as light (lwt), intermediate (mwt) and heavy (hwt), using a predetermines weight method. The grouped seeds are then sown using 1mm sieved garden soil as a medium in poly bags. After germination and from the two leave stage we start counting the seedling length, collar diameter, dry weight, etc., at every 15 days interval and up to 90th day, by using destructive method. Study on the germination and seedling growth parameters conclude that except in mean germination time (MGT) and germination index (GI), all the other parameters are positively correlated with increasing weight. Relative growth rate (RGR) and average growth rate (AGR) that use seedling dry weight also showed a positive relation with seed weight. Apart from this, the distribution pattern of seed weights as calculated from the frequency distribution of 255 seeds did not show lognormal distribution (K-S test: P<0.05, d = 0.163, n = 255). Seed weight (n=255) varied from 0.39g to 0.81g (mean: 0.61g ± 0.01g). Among the weight class, mid weight (0.5 to 0.69g) seeds made up 56.47% of the total population followed by heavy weight (23.14%) and then by light weight (20.39%).

EFFECT OF SOLID AND LIQUID ORGANIC FERTILIZER ON GROWTH, YIELD AND YIELD COMPONENTS OF ROSSELLE (Hibiscus sabdariffa L.) IN THE NIGERIAN SAVANNAH

2021 ◽  
Vol 5 (2) ◽  
pp. 428-439
Author(s):  
K. M. Ladan ◽  
M. G. Abubakar ◽  
J. Suleiman
Keyword(s):  
Growth Rate ◽  
Plant Height ◽  
Seed Weight ◽  
Organic Fertilizer ◽  
Poultry Manure ◽  
Dry Weight ◽  
Assimilation Rate ◽  
Area Index ◽  
Net Assimilation ◽  
100 Seed Weight

The Study was conducted to evaluate the effect of solid and liquid organic fertilizer on growth and yield of rosselle in 2016 cropping season at Institute of Agricultural Reserve Zaria, Samaru (11011’N 07038E and 686m) and Institute of Horticultural Research Farm Bagauda (12000’N 8031”Em 488m) in Northern Guinea Savannah and Sudan Savannah Ecological Zones of above sea level Nigeria. Treatments consisted of four levels of solid poultry manure (0.0, 1.0, 2.0 and 3.0) tons/ha and five levels of liquid organic manure from Grand Total Organic Fertilizer Limited (0.0, 0.5, 1.0, 1.5 and 2.9) litres/ha, which were factorially combined in a randomized complete block design (RCBD) and replicated three times. Data on growth parameter were collected on plant height (cm), plant dry weight (g), leaf Area index crop growth rate (CGR) Relative Growth Rate (RGR) and Net assimilation rate (NAR) while data on yield parameters like number of calyx per pant, 100 seed weight (g) and  calyx yield per hectare kg/ha were collected. Results showed that plant height, plant dry weight(g), 100 seed weight(g) and calyx dry yield kg/ha had a significant increase with application of 2.0 litres/ha of liquid fertilizer than other rates. While application of solid poultry manure at 3.0ton/ha significantly increases plant height, net assimilation rate, leaf area index and calyx dry weight when compared with other rates. From the results obtained, the combination of 2.0 litres/ha liquid organic fertilizer and 3.0 ton/ha solid poultry manure produce the highest calyx yield at both location.

scholarly journals Development of priming technology for enhanced planting value of seeds in kabuli chickpea (Cicer arietinum L.)

2021 ◽  
Vol 13 (2) ◽  
pp. 735-743
Author(s):  
Umesh Hiremath ◽  
Basave Gowda ◽  
Lokesh G.Y . ◽  
B. S. Ganiger
Keyword(s):  
Root Length ◽  
Seed Quality ◽  
Dry Weight ◽  
Germination Percentage ◽  
Quality Parameters ◽  
Shoot Length ◽  
Growth And Yield ◽  
Seedling Vigour ◽  
Seedling Length ◽  
Vigour Index

The continuous rise in global population demands more food production under limited land resources accompanied by climate change. More oversupply of quality seeds to meet ever-growing food demand is a highly challenging task. Seeds with low vigour level limit the growth and yield of crops at varied field conditions. Hence, an experiment was conducted to develop a technique for the fast and homogeneous growth of kabuli chickpea seeds. The priming treatments evaluated in the present study enhanced the various seed quality parameters of kabuli chickpea significantly when compared to control. Hydro-priming for 4 hours (at 20°C) and air drying for 72 hours showed better results compared to rest of the treatments both in fresh seeds which recorded higher first count (66.38%), germination (92.50%) root length (11.85 cm), shoot length (6.16), mean seedling length (18.01), dry seedling weight (747 mg), seedling vigour index-I (1665), higher speed of emergence (0.3992) and old seeds with higher first count (61.88%), germination (74.13%) root length (8.15 cm), shoot length (5.85 cm), mean seedling length (14.00 cm), seedling dry weight (611 mg), seedling vigour index-I (1056), higher speed of emergence (0.3814). The aged seeds have recorded 29 % increase in germination percentage in contrast to 8 percent increases in fresh seeds. Kabuli chickpea seeds could be subjected to hydropriming, an affordable, alternative, and eco-friendly technique for improving seed and seedling vigour of kabuli chickpea.

scholarly journals Growth Analysis of Wheat Using Machine Vision: Opportunities and Challenges

Sensors ◽  
2020 ◽  
Vol 20 (22) ◽  
pp. 6501
Author(s):  
Mohammad Ajlouni ◽  
Audrey Kruse ◽  
Jorge A. Condori-Apfata ◽  
Maria Valderrama Valencia ◽  
Chris Hoagland ◽  
...  
Keyword(s):  
Growth Rate ◽  
Machine Vision ◽  
Leaf Area ◽  
Relative Growth Rate ◽  
Growth Analysis ◽  
Growth Parameters ◽  
Dry Weight ◽  
Projected Area ◽  
Relative Growth ◽  
Leaf Dry Weight

Crop growth analysis is used for the assessment of crop yield potential and stress tolerance. Capturing continuous plant growth has been a goal since the early 20th century; however, this requires a large number of replicates and multiple destructive measurements. The use of machine vision techniques holds promise as a fast, reliable, and non-destructive method to analyze crop growth based on surrogates for plant traits and growth parameters. We used machine vision to infer plant size along with destructive measurements at multiple time points to analyze growth parameters of spring wheat genotypes. We measured side-projected area by machine vision and RGB imaging. Three traits, i.e., biomass (BIO), leaf dry weight (LDW), and leaf area (LA), were measured using low-throughput techniques. However, RGB imaging was used to produce side projected area (SPA) as the high throughput trait. Significant effects of time point and genotype on BIO, LDW, LA, and SPA were observed. SPA was a robust predictor of leaf area, leaf dry weight, and biomass. Relative growth rate estimated using SPA was a robust predictor of the relative growth rate measured using biomass and leaf dry weight. Large numbers of entries can be assessed by this method for genetic mapping projects to produce a continuous growth curve with fewer replicates.

Effects of seed size and seed weight on seedling establishment, seedling vigour and tolerance of summer turnip rape (Brassica rapa) to flea beetles, Phyllotreta spp.

2007 ◽  
Vol 87 (2) ◽  
pp. 385-393 ◽  
Author(s):  
R. H. Elliott ◽  
L. W. Mann ◽  
O. O. Olfert
Keyword(s):  
Seed Size ◽  
Brassica Rapa ◽  
Seedling Establishment ◽  
Seed Weight ◽  
Flea Beetle ◽  
Dry Weight ◽  
Seedling Vigour ◽  
Shoot Dry Weight ◽  
Flea Beetles ◽  
Beetle Damage

A 3-yr study was conducted on three synthetic Brassica rapa L. cultivars to determine the effects of seed size and seed weight on seedling establishment, seedling growth and susceptibility to feeding damage by flea beetles, Phyllotreta spp. (Coleoptera: Chrysomelidae). Seed lots of AC Boreal, Fairview and Hysyn 110 were sieved to obtain small, medium and large seeds (1.4–1.6, 1.6–1.8 and 1.8–2.0 mm, respectively). In the laboratory, seedlings grown from large seeds had the largest cotyledons, highest shoot dry weight and highest biomass. Shoot weights increased as seed size increased. Sized seeds of the three cultivars were grown in the field without insecticides in 1998–2000. Seedlings of small seeds had the highest flea beetle damage and poorest seedling establishment. Shoot dry weight and biomass 14–35 d after planting increased as seed size and seed weight increased. Compared with small seeds, large seeds improved shoot dry weight, biomass and seed yield by 13–43, 25–57 and 12%, respectively. Results indicated that seedlings of medium and large seeds are more vigorous and tolerant to flea beetle damage than seedlings of small seeds. Tolerance was due to a higher initial seedling weight rather than higher relative growth rate. Shoot dry weights, biomass and yield of the three cultivars were more strongly correlated with 1000-seed weight than with seed diameter. Key words: Canola, flea beetles, seed size, seedling vigour, tolerance, seed weight

scholarly journals GROWTH ANALYSIS OF A SWEETPOTATO CULTIVAR GROWN IN AN NFT SYSTEM

HortScience ◽  
1994 ◽  
Vol 29 (7) ◽  
pp. 731c-731
Author(s):  
Pauline P. David ◽  
Audrey A. Trotman ◽  
Desmond G. Mortley
Keyword(s):  
Growth Rate ◽  
Growth Analysis ◽  
Growth Parameters ◽  
Dry Weight ◽  
Root Production ◽  
Component Part ◽  
Storage Root ◽  
Storage Roots ◽  
Area Index ◽  
Total Plant

One of the major objective of growth analysis data is to provide a basic understanding of some of the mechanisms that affect plant growth. This study was initiated to evaluate the effects on several growth parameters when plants are grown in an NFT system. Vine cuttings (15 cm length) of the sweetpotato cultivar ``Georgia Jet” was grown in a closed NFT system for a period of 120 days. Nutrient was supplied in a modified half-strength Hoagland's solution with a N:K ratio of 1:2.4. Destructive harvesting of plants occurred at 14 day intervals at which time plants were separated into their various component parts and analyzed for dry weight accumulation, leaf area index, crop growth rate, relative growth rate and net assimilation rate. Results showed dry weight distribution within the plant had a linear response for all component part evaluated. Greatest contributors to total plant dry weight was stem followed by leaves, fibrous roots, buds and flowers. However, once storage root production occurred it contributed the largest percentage to total plant dry weight. LAI was optimum at 80 days after planting (DAP) while CGR and RGR fluctuated throughout the growing season. Initially NAR was higher in foliage than storage roots but declined once storage root enlargement began, suggesting a translocation of assimilates to storage root.

scholarly journals Field priming with cytokinins enhances seed viability of wheat after low temperature storage

2021 ◽  
Vol 67 (No. 2) ◽  
pp. 77-84
Author(s):  
Radoslav Chipilski ◽  
Irina Moskova ◽  
Albena Pencheva ◽  
Konstantina Kocheva
Keyword(s):  
Low Temperature ◽  
Field Experiments ◽  
Growth Parameters ◽  
Seed Viability ◽  
Dry Weight ◽  
Grain Filling ◽  
Seedling Vigour ◽  
Cell Membrane Stability ◽  
Low Temperature Storage ◽  
Temperature Storage

Field experiments were conducted with two winter wheat cultivars that were primed with 6-benzylaminopurine (6-BA) or kinetin at the concentration 10 mg/L twice during the grain filling stage. After priming, wheat physiological parameters were measured in the field, and the analysis of yield was performed after harvest. Harvested seeds were subjected to low temperature storage for 12 months at –18 °С simulating conservation conditions in genebanks. In field experiments, treated plants exhibited up to 14% higher productivity, higher fresh and dry weight, and chlorophyll content index of flag leaves. Priming significantly improved germination, seedling vigour and growth parameters. In 5-days-old seedlings developed from low temperature stored seeds of field primed plants, the average accumulation of malondialdehyde and H<sub>2</sub>O<sub>2</sub> was estimated 25% lower, which contributed to higher cell membrane stability. These results correlated positively with growth characteristics of 15-days-old seedlings. The stimulating action of cytokinin priming was more pronounced in the modern cv. Geya-1 compared to the older cv. Sadovo 772 and could be attributed to improved anti-aging mechanism connected with better protection against oxidative damage.  

scholarly journals Effect of integrated nutrient management and spacing on seed quality parameters of black gram cv. Lbg-625 (rashmi)

2016 ◽  
Vol 8 (1) ◽  
pp. 340-345
Author(s):  
N. Amruta ◽  
P. J. Devaraju ◽  
Mangalagowri Mangalagowri ◽  
S. P. Kiran ◽  
H. P. Ranjitha ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Seed Quality ◽  
Dry Weight ◽  
Quality Parameters ◽  
Black Gram ◽  
Seedling Vigour ◽  
Nutrient Levels ◽  
Planting Geometry ◽  
Seedling Length ◽  
Vigour Index

A field experiment was conducted to assess the response of nutrient levels and spacing on seed quality attributes of black gram cv. LBG-625 (Rashmi). Experimental results revealed that fertilizer application of 50:100:100 + Black gram rhizobia (250 g ha-1) + PSB- Bacillus megaterium (250 g ha-1) recorded highest test weight (39.27 g), germination (90.60%), root length (15.77 cm), shoot length (13.43 cm), mean seedling length (29.20 cm), mean seedling dry weight (57.99 mg), seedling vigour index-I (2656), seedling vigour index-II (525), total dehydrogenase activity (0.998), protein content (23.16%), field emergence (86.56 %) lowest electrical conductivity (0.813 dSm-1) were superior over other fertilizer treatments. Among the planting geometry 60 x 10 cm recorded more germination per cent (90.48 %) compared to 45 x 10 cm (87.64 %) and 30 x 10 cm (86.91 %). Interaction of nutrient levels and spacing through the application of 50:100:100 + black gram rhizobia (250 g ha-1) + PSB- B. megaterium (250 g ha-1) with planting geometry 60 x 10 cm recorded more mean seedling length (34.40 cm), mean seedling dry weight (58.30 mg),and field emergence (90.24 %) lowest electrical conductivity (0.776 dSm-1) compared to control. The application of 50:100:100 + Black gram rhizobia (250 g ha-1) + PSB- B. megaterium (250 g ha-1) with planting geometry 60 x 10 cm were considered as seed quality improvement approach in blackgram, therefore conjunctive use of inorganic fertilizers and biofertilizer may be suggested for higher seed quality parameters along with overall betterment of crop.

scholarly journals Biomass Accumulation in the Fern Asplenium nidus avis (L) under Root Restriction

2020 ◽  
pp. 1-9
Author(s):  
A. Pagani ◽  
J. Molinari ◽  
E. Giardina ◽  
A. Di Benedetto
Keyword(s):  
Growth Rate ◽  
Relative Growth Rate ◽  
Growth Parameters ◽  
Biomass Accumulation ◽  
Dry Weight ◽  
Point Of View ◽  
Relative Growth ◽  
Net Assimilation ◽  
Root Restriction ◽  
Asplenium Nidus

Pot ornamental plant productivity is related to the environmental growth facilities but negatively affected by the pot root restriction syndrome. Most ferns showed a lower relative growth rate and long production cycles (24 months or more) for which growers use small pots to increase yield per unit area of greenhouse. The aim of this work was to analyze growth changes in response to different pot volume in plants of A. nidus avis spore-propagated under the hypothesis that it would play a role as an abiotic stress which decrease commercial productivity. Our results showed that the use of big pots increased fresh and dry weight and frond area (the main aesthetic trait). When growth parameters were performed, a higher the frond appearance rate (RLA), the frond area expansion (RLAE) and the frond thickness (SLA) were found in 1500 cm3 pot as well as the relative growth rate (RGR) and the net assimilation rate. The use of biggest pot for fern cropping stimulated biomass accumulation through a higher capacity to initiate and expand fronds, to increase photosynthetic rates and change photo assimilate partitioning which favor shoots. From the grower´s point of view, our results suggested that higher yields of A. nidus avis fern would be reached decreasing root restriction, that is, to use the biggest pot volume from the early transplant from plug trays.

scholarly journals Historical analysis of somatic growth of Chilean hake (Merluccius gayi gayi) off central coast of Chile

2017 ◽  
Vol 41 (3) ◽  
pp. 558-569
Author(s):  
Francisco Cerna ◽  
Luis A. Cubillos ◽  
Guido Plaza
Keyword(s):  
Growth Rate ◽  
Growth Parameters ◽  
Historical Analysis ◽  
Somatic Growth ◽  
Growth Curves ◽  
Individual Growth ◽  
Linear Mixed Effect Model ◽  
Central Coast ◽  
Mixed Effect ◽  
Average Growth

Somatic growth was studied in the Chilean hake stock off central coast of Chile, through the application of Von Bertalanffy equation (vB) as a non-linear mixed effect model (NLME) on length-at-agedata derived from otolith readings made at Instituto de Fomento Pesquero since 1972. Average growth rates for each year from 1972 to 2009 were estimated. Growth parameters of vB curves were analyzed for three major periods regarding changes in stock biomass (1972-1990, 1991-2003 and 2004-2009). Results indicated that the average growth rate showed inter-annual variations that did not exceed ±15 cm of total length around the historical average of males and females, showing no persistent tendency towards sustained increase or decrease in somatic growth rate. Growth curves obtained with the vB parameters, estimated for the three periods, showed a similar trajectories until age 7 and 8 years, in both male and females. Changes after this age may be a result of a decrease of larger fish removed by the selective effect of fishing, which triggered variations in the fitted curves, but not necessarily changes in somatic growth of these ages in the population. The results demonstrated that the individual growth of hake has not changed significantly since 1972, without observing a density-dependent effect with decreasing abundance.

scholarly journals Potentiality of Bioagents on Seed Quality Enhancement in Chickpea

2014 ◽  
Vol 3 (3) ◽  
pp. 149-153 ◽  
Author(s):  
Venuturla Bharathi ◽  
Kilaru K. Durga ◽  
Madugula S. Rani
Keyword(s):  
Seed Quality ◽  
Growth Parameters ◽  
Germination Percentage ◽  
Quality Enhancement ◽  
Seedling Vigour ◽  
Vigor Index ◽  
Seedling Length ◽  
Vigour Index ◽  
Quality Character ◽  
And Storage

Planting healthy seeds and other inputs have an impact on seed quality, fungal invasion deteriorates the seed quality in soil and storage. Studies on chickpea carried out at Seed Research and Technology Center, Rajendranagar, Hyderabad during spring 2010-11 2011-12 revealed that benomyl was found effective followed by Pseudomonas fluorescens in the inhibition of mycelial growth of Fusarium solani. Maximum germination percentage was recorded with Benomyl (Benomyl 500 WP) @ 2 g/kg seed (treated check) and Tebuconazole @ 1 ml/ kg seed (95 per cent) followed by treatment with P. fluorescens @ 10 g/kg seed along with soil application of P. fluorescens @ 3 kg/acre (94 per cent). Maximization of growth parameters like root length, shoot length and total seedling length were observed with Benomyl @ 2 g/ kg seed  as 17.0 cm, 10.3 cm and 27.3 cm, respectively. Considering seedling vigour index as an important seed quality character, P. fluorescens and Benomyl @ 2 g/kg seed recorded high seedling vigor index. The per cent recovery of infested seeds was found to be low with treated seeds when compared to the control.

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