scholarly journals Acceleration in Germination Sensu stricto Plays a Central Role on Seedling Vigor in Post-Germination

Plants ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 2151
Author(s):  
João Paulo Ribeiro-Oliveira ◽  
Marco Aurélio Bosseli ◽  
Edvaldo Aparecido Amaral da Silva
Keyword(s):  
Sensu Stricto ◽  
Seedling Development ◽  
Water Dynamics ◽  
Soybean Seeds ◽  
Seedling Vigor ◽  
Seed Physiology ◽  
True Seed ◽  
Vigor Index ◽  
Germinating Seeds ◽  
Non Destructive

An obvious relationship between germination sensu stricto and seedling development during post-germination has been considered, but not explained concerning vigor. Taking this into account, we used measurements of water dynamics in germinating seeds and seedling development to clarify that relationship. The biological model was soybean seeds, since it is the most relevant ‘true seed’ produced around world. Our findings suggest that the way energy is used (acceleration) and not its input (velocity) is the main aspect relating seed germination and seedling development, especially when considering vigor. However, velocity and acceleration can be complementary in analyses of seed physiology. Other measurements proposed here also have potential uses for testing vigor in seed lots, such as seedling vigor index and biological activity in the lot. Therefore, water dynamics in germinating seeds can be an interesting way for testing seed lots, because it is an easier, faster and cheaper method in relation to other non-destructive procedures.

scholarly journals Clues on an intraspecific communication system in early plant establishment: The seed-seedling transition from the point of view of a crosstalk between information theory and gene expression

2020 ◽  
Author(s):  
João Paulo Ribeiro-Oliveira ◽  
Lilian E. D. Silveira ◽  
Lilian V. A. Pinto ◽  
Edvaldo A. A. Silva ◽  
Henk W. M. Hilhorst
Keyword(s):  
Gene Expression ◽  
Information Theory ◽  
Information Entropy ◽  
Sensu Stricto ◽  
Transition System ◽  
Water Dynamics ◽  
Plant Establishment ◽  
Physiological Stage ◽  
Intraspecific Communication ◽  
Germinating Seeds

AbstractHow much interactivity is there in a seed-seedling transition system? The answer for this question can reveal a key aspect for early plant establishment. Thus, we hypothesize that information entropy is correlated with early plant development because it is directly related to interactions between seed-seed, seed-seedling, and seedling-seedling. To test this hypothesis, we perform an overlapping of classical physiological measurements (embryo protrusion), gene expression in germination sensu stricto, water dynamics in germinating seeds and information theory. For a biological model, we used Solanum lycocarpum A. St.◻Hil. seeds. This is a Neotropical species with high intra-specific variability in the seed sample. Our finds demonstrate that the dynamic and transient seed-seedling transition system is influenced by the number of individuals (seed or seedling) in the sample, especially at a same physiological stage. In addition, we also discuss that: (i) information entropy enables the quantification of system disturbance relative to individuals in the same physiological stage (seed-seed or seedling-seedling), which may be determinant for embryo growth during germination. (ii) there is possible intraspecific communication in seed-seedling transition systems formed by germinating seeds with the potential to alter the pattern of embryonic development of the sample. In view of this, we suggest the use of information entropy as a tool for studies of biological systems to clarify the phenomenon of mutual stimulation in the germination process.

scholarly journals Enhancement of rice and wheat seed germination and seedling vigor by biocontrol agent, Cladosporium cladosporioides

2020 ◽  
Vol 7 (1) ◽  
pp. 9-15
Author(s):  
Md Touhidul Islam
Keyword(s):  
Seed Germination ◽  
Biocontrol Agent ◽  
Germination Percentage ◽  
Cladosporium Cladosporioides ◽  
Germination Index ◽  
Rice Seed ◽  
Seedling Vigor ◽  
Wheat Seed ◽  
Mean Values ◽  
Vigor Index

The biocontrol agent, Cladosporium cladosporioides, strain BOU1 was used to evaluate the rice and wheat plant growth by germination percentage, germination index, vigor index- I and vigor index-II in rice and wheat seed. All the variables of germination and seedling vigor of rice and wheat were increased by the conidial suspension of C. cladosporioides. The rice seed treated with C. cladosporioides had the highest germination index and vigor index-I with average mean values of 8.2 and 4.5, respectively; while the treated wheat seed showed the highest germination percentage and vigor index- II with average mean values of 80.3 and 0.05, respectively. The research is concluded that the biocontrol agent C. cladosporioides improves seed germination and seedling vigor of wheat and rice, which can finally be converted into superior yield even in adverse conditions. Res. Agric., Livest. Fish.7(1): 09-15, April 2020

A Simple Technique for Seed Transfer in X-ray Analysis of Seed

1974 ◽  
Vol 4 (3) ◽  
pp. 407-409
Author(s):  
B. S. P. Wang
Keyword(s):  
Simple Technique ◽  
Seedling Vigor ◽  
X Ray ◽  
Seed Germinability ◽  
Seed Transfer ◽  
Follow Up Study ◽  
Germinating Seeds ◽  
Tree Seed

Using X-radiography both for the follow-up study of germination and the correlation of tree seed germinability with embryo and endosperm (or megagametophyte) development often involve seed transfer by hand. Such a procedure is tedious and time-consuming and errors of seed displacement occur frequently. Conventional germination procedures also make counting germinants and evaluating seedling vigor difficult due to the shifting of positions of germinating seeds. A simple technique of using a combination of mechanized vacuum counting plate and perforated Plexiglas templates was devised to overcome these difficulties. It decreased by 40 times the time needed to transfer 400 seeds by hand. It also reduced errors of seed displacement.

EFFECTS OF DIFFERENT CONCENTRATIONS OF TITANIUM OXIDE NANOPARTICLES AND BULK ON GERMINATION CHARACTERISTICS AND ANTIOXIDANT ENZYMES ACTIVITY OF AVENA SATIVA L. SEEDS

2021 ◽  
Vol 24 (1) ◽  
Author(s):  
Moein Iranmanesh ◽  
◽  
Abolfazl Beyraghdar ◽  
Homa Mahmoodzadeh ◽  
◽  
...  
Keyword(s):  
Enzyme Activity ◽  
Titanium Oxide ◽  
Germination Percentage ◽  
Shoot Length ◽  
Guaiacol Peroxidase ◽  
Seedling Vigor ◽  
Titanium Oxide Nanoparticles ◽  
Vigor Index ◽  
Germination Characteristics ◽  
Peroxidase Enzyme

The aim of this study is to compare the effects of different concentrations of nano and bulk titanium oxide on germination characteristics and the activity of antioxidant enzymes in Avena Sativa L. The titanium oxide nanoparticles diameter was determined about 40 nm using AFM, DLS, XRD analysis. In this study, based on a completely randomized design, seeds were placed in Petri dishes containing different concentrations of nano and bulk titanium oxide (50, 150, 250, 350 ppm). Three replications were considered for each concentration and the germination factors and antioxidant enzyme activity in the treated plant were compared with the control. The average data were compared using one-way ANOVA analysis and DUNCAN tests. According to the results, the following parameters of seedling vigor index, root length, dry weight, wet weight, guaiacol peroxidase enzyme, and polyphenol oxidase were statistically significant. The highest germination percentage, relative germination percentage, germination rate, weight germination index and shoot length were observed at 250 ppm bulk titanium oxide. In addition, the highest average germination time, seedling vigor index, optimum seedling index, and root length were observed in 50 ppm bulk titanium oxide treatment and the highest shoot length was observed in 250 ppm nano-titanium oxide treatment. In the enzyme activity, the highest activity of guaiacol peroxidase enzyme was observed in 150 ppm bulk titanium oxide treatment and the highest Polyphenol oxidase enzyme activity was observed in bulk titanium oxide 350 ppm treatment.

scholarly journals Comparative allelopathic potential of metabolites of two Alternanthera species against germination and seedling growth of rice

2014 ◽  
Vol 32 (1) ◽  
pp. 1-10 ◽  
Author(s):  
A. Mehmood ◽  
A. Tanveer ◽  
M.A. Nadeem ◽  
Z.A. Zahir
Keyword(s):  
Seedling Growth ◽  
Leaf Extract ◽  
Alternanthera Philoxeroides ◽  
Infested Soil ◽  
Aqueous Extracts ◽  
Seedling Vigor ◽  
Allelopathic Potential ◽  
Plant Parts ◽  
Vigor Index ◽  
Aqueous Leaf Extract

A laboratory study was conducted to investigate the allelopathic effect of aqueous extracts of plant parts of Alternanthera philoxeroides and A. sessilis and soil incorporated residues on germination and seedling growth of rice (Oryza sativa). Aqueous extracts prepared from different plant parts of Alternanthera species delayed rice germination. Alternanthera philoxeroides and A. sessilis inhibited rice germination by 9-100% and 4-49%, respectively. Germination of rice seeds was reduced with increasing concentration of aqueous leaf extracts of both weed species. Early seedling growth (root and shoot lengths) and seedling vigor index were significantly reduced by 5% aqueous leaf extract compared with distilled water treated control. Germination, root and shoot lengths, root and shoot dry weights and seedling vigor index of rice were drastically reduced by 3 and 4% in residue infested soil compared with residue free soil. The inhibitory effect of A. philoxeroides in terms of germination and seedling growth of rice was greater than that of A. sessilis. Five percent aqueous leaf extract and 4% residue infested soil of A. philoxeroides caused complete failure of rice seed germination. Alternanthera philoxeroides contained water soluble phenolics, namely 4 hydroxy-3-methoxy benzoic acid (16.19 mg L-1) and m-coumaric acid (1.48 mg L-1), whereas Alternanthera sessilis was rich in chlorogenic acid (17.85 mg L-1), gallic acid (11.03 mg L-1) and vanillic acid (9.88 mg L-1). The study indicates that the allelopathic potential of Alternanthera species may play an important role in enhancing the invasiveness of these species and may suppress rice plants in the vicinity.

scholarly journals Влияние пониженных температур на прорастание семян сои

2021 ◽  
Author(s):  
Александр Будак ◽  
Keyword(s):  
Low Temperatures ◽  
Arid Regions ◽  
Germination Rate ◽  
Soybean Seeds ◽  
Optimal Conditions ◽  
Large Share ◽  
Rate Characteristic ◽  
Increase In Productivity ◽  
The Arid Regions ◽  
Germinating Seeds

The urgency of soybean breeding for increasing resistance to low temperatures is caused by a large share of the arid regions of Moldova, where the increase in productivity can be ensured by carrier earlier plant-ing and ripening periods before the summer droughts peaks. Thus, as a result of the studies carried out, it was found that when germinating seeds at a temperature of 4˚C, selection is stricter and more efficient. Sowing in the early stages is possible, since soybean seeds remain viable at low temperatures, and when the temperature rises, the best varieties reach the germination rate characteristic of optimal conditions.

scholarly journals Impact of seed size on seeds viability, vigor and storability of Hordeum vulgare (L.)

2018 ◽  
Author(s):  
M. Massimi
Keyword(s):  
Seed Germination ◽  
Seed Size ◽  
Seed Quality ◽  
Accelerated Aging ◽  
Dry Weight ◽  
Germination Percentage ◽  
Seedling Vigor ◽  
Hordeum Vulgare L ◽  
Vigor Index ◽  
The Impact

Seed size may influence seed germination, and seedling vigor. Few investigations are available about the effect of seed size on barley seedling vigor in Jordan. The present study was designed to investigate the impact of seed size on germination percentage, seedling dry weight, seedling vigor index, and germination percentage after accelerated aging in barley. Three seed sizes i.e. large, medium, and small (having diameter of > 2.75 millimeter, 2.5 - 2.75 millimeter, and less than 2.5 millimeter, respectively) were tested in the experiment. Seed quality for different seed size categories was evaluated in the laboratory by measuring seed germination, germination after accelerated aging, as well seedling dry weight and vigor index. Results showed significant differences for large seeds in germination percentages, seedling dry weight and vigor index. It may be concluded that large seed size of barley showed best quality.

scholarly journals Temporal variation in seed quality of Indian spinach preserved in different containers

2016 ◽  
Vol 5 (2) ◽  
pp. 51-57 ◽  
Author(s):  
M Kamruzzaman ◽  
S Khatun ◽  
A Rakib ◽  
MI Hoque ◽  
MH Rani
Keyword(s):  
Moisture Content ◽  
Seed Quality ◽  
Initial Moisture Content ◽  
Dry Weight ◽  
Germination Percentage ◽  
Seedling Vigor ◽  
Fresh Weight ◽  
Seed Technology ◽  
Vigor Index

The experiment was conducted to investigate the seed quality of Indian spinach for three months stored at different containers (Plastic pot, polythene bag and cloth bag) during 2013-2014 at Seed Technology Laboratory of Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur. The initial moisture content of the seed was 9.89% with 75.00% germination. However, after two months, the seed had a different range of increased moisture content with reduced germination percentage depending upon the packing materials. Among the three containers, seeds stored at cloth bag absorbed more moisture (14.36%) from surrounding atmosphere followed by the moisture content, 12.67% and 11.50% of polythene bag and airtight plastic pot, respectively. Seeds stored at plastic pot, polythene bag and cloth bag exhibited 65.00, 64.00 and 50.00 per cent germination, respectively. Similarly, the fresh weight and dry weight of seedling and seedling vigor were also decreased. The seeds of plastic pot were good in term of germination capacity, fresh and dry weight and vigor index in comparison to those stored at cloth bag and polythene bag.Int. J. Agril. Res. Innov. & Tech. 5 (2): 51-57, December, 2015

scholarly journals PENGARUH PERENDAMAN TERHADAP VIABILITAS BENIH TEMBAKAU (Nicotiana tabacum L.)

2020 ◽  
Vol 20 (2) ◽  
pp. 87
Author(s):  
SIWI SUMARTINI ◽  
SRI MULYANI ◽  
FATHKUR ROCHMAN
Keyword(s):  
Nicotiana Tabacum ◽  
Root Length ◽  
Seed Viability ◽  
Germination Percentage ◽  
Test Method ◽  
Seedling Vigor ◽  
Tobacco Seed ◽  
Vigor Index ◽  
Nicotiana Tabacum L ◽  
Tobacco Seeds

<p>ABSTRAK<br />Permasalahan dalam pengembangan tembakau rakyat adalah daya<br />berkecambah benih yang rendah. Penelitian ini bertujuan untuk<br />mengetahui pengaruh perendaman benih terhadap daya berkecambah<br />benih tembakau (Nicotiana tabacum L.). Penelitian dilaksanakan di<br />laboratorium Balai Penelitian Tanaman Pemanis dan Serat pada bulan Mei<br />sampai dengan Juli 2013. Perlakuan disusun dalam rancangan petak<br />terbagi dan diulang empat kali. Sebagai petak utama adalah tujuh varietas<br />tembakau lokal, yaitu V1 = Kemloko1; V2 = Kemloko2; V3 = Kemloko3;<br />V4 = Kasturi1; V5 = Kasturi2; V6 = Grompol Jatim1; dan V7 =<br />Bojonegoro1. Sebagai anak petak adalah: R1 = Tanpa perendaman<br />(kontrol); R2 = perendaman selama satu jam dalam air; R3 = perendaman<br />selama satu jam dalam larutan KNO 3  (0,1%), dan R4 = perendaman<br />selama satu jam dalam larutan KNO 3 (0,2%). Setelah perlakuan<br />perendaman, benih tembakau dikecambahkan menggunakan metode Uji di<br />Atas Kertas. Pada setiap ulangan, sebanyak 100 benih tembakau<br />dikecambahkan pada media kertas merang yang diletakkan di dalam<br />petridish berdiameter 9 cm. Perkecambahan dilakukan di dalam<br />germinator tipe IPB dengan suhu 23 o C dan kelembaban nisbi 87-93%.<br />Parameter yang diamati adalah daya berkecambah, panjang kecambah,<br />panjang akar kecambah, dan indeks vigor kecambah. Perendaman benih<br />tembakau menggunakan air, larutan KNO 3 0,1% dan larutan KNO 3 0,2%<br />selama satu jam sebelum benih disemaikan, dapat meningkatkan daya<br />berkecambah dan panjang kecambah varietas Kemloko1 dan Grompol<br />Jatim1. Perlakuan perendaman benih dengan air berpengaruh positif pada<br />varietas Kemloko1 yang ditunjukkan dengan daya berkecambah tertinggi,<br />sedangkan perendaman dengan larutan KNO 3 0,2% berpengaruh negatif<br />pada varietas Bojonegoro1 yang ditunjukkan dengan daya berkecambah<br />paling rendah. Perlakuan perendaman dengan air maupun larutan KNO 3<br />(0,1% dan 0,2%) menunjukkan pengaruh yang berbeda-beda terhadap<br />parameter daya berkecambah, panjang kecambah, panjang akar kecambah,<br />dan indeks vigor kecambah pada semua varietas tembakau yang diuji.<br />Kata kunci: Nicotiana tabacum L., perendaman, KNO 3 , viabilitas benih</p><p>ABSTRACT<br />Low germinability of seeds is one of major problems in tobacco<br />development. The aim of this study was to determine the effect of priming<br />on tobacco (Nicotiana tabacum L.) seed viability. The research was<br />conducted in the laboratory of the Indonesian Sweeteners and Fiber Crops<br />Research Institute during May to July 2013. The treatments were arranged<br />in a split plot design with four times of replication. The main plots were<br />seven tobacco varieties namely V1 = Kemloko1; V2 = Kemloko2; V3 =<br />Kemloko3; V4 = Kasturi1; V5 = Kasturi2; V6 = Grompol Jatim1; and V7<br />= Bojonegoro1. The subplots were priming seeds for one hour namely R1<br />= without priming (control); R2 = priming for one hour on water; R3 =<br />priming for one hour on KNO 3  (0,1%) solution, and R4 = priming for one<br />hour on KNO 3 (0,2%) solution. After priming, seeds were germinated using<br />the Upper Paper Test method. A hundred of seeds were sown on straw<br />paper media in a petridish diameter 9 cm of each replication. Parameters<br />measured were germination percentage, shoot and root length, and<br />seedling vigor index. Priming tobacco seed with water or KNO 3  (0.1 and<br />0.2%) solution for one hour before seeds were germinated significantly<br />improved germination percentage and shoot length of Kemloko1 and<br />Grompol Jatim1 varieties. Priming tobacco seed with water had positive<br />effect on Kemloko1 variety which resulted the highest germination<br />percentage but had adversely effect on Bojonegoro1 variety which resulted<br />the lowest germination percentage. Priming tobacco seeds with water or<br />KNO 3 (0.1 and 0.2%) solution resulted different effect on germination<br />percentage, shoot and root length, and seedling vigor index parameters for<br />all tobacco varieties were observed.<br />Key words: Nicotiana tabacum L., priming, KNO 3 , seed viability</p>

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