scholarly journals The Variability of Seed Viability and Seed Vigour of Mindi (Melia azedarachlinn.) from Several Populations in The Community Forest of West Java

Jurnal Wasian ◽  
2016 ◽  
Vol 3 (2) ◽  
pp. 69
Author(s):  
Yulianti Bramasto ◽  
Nurheni Wijayanto ◽  
Iskandar Z Siregar ◽  
I.G.K. Tapa Darma
Keyword(s):  
Germination Rate ◽  
Seed Viability ◽  
Germination Percentage ◽  
Melia Azedarach ◽  
Dormancy Breaking ◽  
Community Forest ◽  
West Java ◽  
Seed Vigour ◽  
Hard Seed ◽  
Seed Sources

The procurement of good quality seeds for the development of mindi (Melia azedarach L.) in the community forest is absolutely necessary. The purpose of this research is to investigate the diversity of the viability and seedling vigor of mindi from different populations with various treatments of dormancy breaking. The sample materials were mindi seeds that were collected from 6 locations (6 seed lots) or seed sources which were located in the community forest of West Java. There are 10 treatments of dormancy breaking that were applied in this study. The experiment design was Randomized Complete Design (RAL). The breaking dormancy  was focused to the delignification of hard seed coat.  Results showed that the most effective dormancy breaking for mindi seed was soaking in consentrated Sulfuric Acid (H2SO4) as long as 30 to 45 minutes. The first count for germination of mindi was on the 16 day and the final count was on the 31 day.The average value of germination percentage (DB) for all seed sources was 40 %, while the highest which is 60% was mindi from Sumedang seed source. The highest value of germination rate that is 6,543%/etmal was seed  from Sumedangand seed from Gambung was the lowest (1,400 %/etmal). Keywords : community forest, Melia azedarach L., variation, viability, vigor.

scholarly journals Improving germination with pre-sowing technique on Caliandra calothyrsus Meissn

2021 ◽  
Vol 912 (1) ◽  
pp. 012080
Author(s):  
K S Hartini ◽  
A Susilowati ◽  
C P Siahaan
Keyword(s):  
Immersion Time ◽  
Germination Rate ◽  
Germination Percentage ◽  
Raw Material ◽  
Dormancy Breaking ◽  
Wood Pellets ◽  
Hard Seed ◽  
Energy Wood ◽  
Randomized Design ◽  
Long Duration

Abstract Red Calliandra (Caliandra colothyrus) is a high-quality energy wood raw material that can be produced rapidly. It’s ideal for making wood pellets. The need for wood pellets is on the increase globally. For the production of wood pellets continuity, sufficient materials were required, requiring the development of red calliandra cultivation. The long duration of the seed germination process due to the hard seed coat is an obstacle in the generative propagation of red calliandra. This study aimed to determine the best treatment for red calliandra dormancy breaking and simultaneous germination. A factorial fully randomized design (F-CRD) with two treatment factors was used in this study. The first factor is type of solution (P) with three levels consisting of: P1: soaking in water; P2 : immersion with MSG solution (12 grams/liter); P3 : immersion in young coconut water (100%). The second factor is the length of immersion time (T) with three levels consisting of: T1: soaking time for 8 hours; T2 : immersion time for 12 hours; T3 : immersion time for 16 hours. Each treatment consisted of 20 seeds, which were replicated three times for a total of 540 seeds. The initial day of germination, length of germination, percentage of germination, and germination rate index were all measured. The results showed that that the most optimal germination for red Calliandra found in the P1T1 treatment (soaking in water for 8 hours). It can be shown from all observed parameters

scholarly journals Non-Deep Physiological Dormancy in Seed and Germination Requirements of Lysimachia coreana Nakai

Horticulturae ◽  
2021 ◽  
Vol 7 (11) ◽  
pp. 490
Author(s):  
Saeng Geul Baek ◽  
Jin Hyun Im ◽  
Myeong Ja Kwak ◽  
Cho Hee Park ◽  
Mi Hyun Lee ◽  
...  
Keyword(s):  
Seed Germination ◽  
Seed Dormancy ◽  
Germination Rate ◽  
Seed Viability ◽  
Cold Stratification ◽  
Dormancy Breaking ◽  
Viability Test ◽  
Physiological Dormancy ◽  
Different Temperatures ◽  
Germination Requirements

This study aimed to determine the type of seed dormancy and to identify a suitable method of dormancy-breaking for an efficient seed viability test of Lysimachia coreana Nakai. To confirm the effect of gibberellic acid (GA3) on seed germination at different temperatures, germination tests were conducted at 5, 15, 20, 25, 20/10, and 25/15 °C (12/12 h, light/dark), using 1% agar with 100, 250, and 500 mg·L−1 GA3. Seeds were also stratified at 5 and 25/15 °C for 6 and 9 weeks, respectively, and then germinated at the same temperature. Seeds treated with GA3 demonstrated an increased germination rate (GR) at all temperatures except 5 °C. The highest GR was 82.0% at 25/15 °C and 250 mg·L−1 GA3 (4.8 times higher than the control (14.0%)). Additionally, GR increased after cold stratification, whereas seeds did not germinate after warm stratification at all temperatures. After cold stratification, the highest GR was 56.0% at 25/15 °C, which was lower than the GR observed after GA3 treatment. We hypothesized that L. coreana seeds have a non-deep physiological dormancy and concluded that 250 mg·L−1 GA3 treatment is more effective than cold stratification (9 weeks) for L. coreana seed-dormancy-breaking.

Purple prairie clover seed viability and germinability after passing through the digestive tracts of yearling steers

2019 ◽  
Vol 99 (5) ◽  
pp. 734-739
Author(s):  
Chen Gu ◽  
Alan D. Iwaasa ◽  
Mengli Zhao
Keyword(s):  
Low Cost ◽  
Seed Viability ◽  
Germination Percentage ◽  
Cattle Dung ◽  
Western Canada ◽  
Important Method ◽  
Hard Seed ◽  
Native North American ◽  
High Viability ◽  
Clover Seed

Endozoochory by cattle has been considered an important method for population self-regeneration; however, the effects of cattle digestive tracts on the viability and germinability of purple prairie clover (Dalea purpurea Vent.), a native North American species, remain understudied. The experiment was conducted at the Agriculture and Agri-Food Canada Swift Current Research and Development Centre in the semiarid prairie of western Canada. Purple prairie clover seeds extracted from cattle dung pats were tested for germination and compared with uningested and scarified seeds from the same paddock. The germination percentage (within 200 d) of the ingested seeds was 16.5% ± 0.8%, two times higher after passing through digestive tracts than uningested seeds (8.3% ± 1.2%), while 76.6% ± 1.5% of ingested seeds remained dormant. As many as 92.4% ± 0.9% of purple prairie clover seeds survived digestion due to their high hard seed rate (90.5% ± 1.0%), which was lower than the uningested seeds by 6.9%. Therefore, cattle dispersing purple prairie clover seeds with high viability and germinability is a low-cost method to increase and rejuvenate purple prairie clover for late-season grazing pastures.

Germinability and Seedling Growth Performance of Chilli (Capsicum annuum) Seeds in Response to Different Gibberellic Acid Concentrations Pre-Treatment

2021 ◽  
Vol 1 (1) ◽  
pp. 10-16
Author(s):  
Ryn Brenda Junaidy ◽  
Shafeeqa Shahruddin
Keyword(s):  
Gibberellic Acid ◽  
Growth Performance ◽  
Seedling Growth ◽  
Crop Production ◽  
Germination Rate ◽  
Germination Percentage ◽  
Dormancy Breaking ◽  
Seedling Vigour ◽  
Seed Germinability ◽  
Significant Difference

Chilli seeds are always associated with physiological dormancy characteristics or endogenous dormancy that has affected their germination potential. Problems noticed on the low seed germination rate, vigour growth, further may lead to the poor seedling growth pattern of chilli crop production. Gibberellic Acid (GA3) which is usually used as a treatment solution is not a new advent of seed dormancy breaking methods for chilli. But, looking forwards to a better GA3 concentration is still needed for the discovery of this treatment potential effect on chilli seed germinability and seedling growth. Thus, this study aimed to evaluate the effect of different GA3 concentrations on seed emergence and seedling growth performance in chilli. In this experiment, chilli seeds were imbibed with 25 mg/L, 75 mg/L and 125 mg/L concentration of GA3 with three replications each; for 24 hours at room temperature (32±4°C) and the untreated seeds as a control. The data collection on final germination percentage was taken daily for 21 days after sowing. While the 15 germinated seeds were directly planted on the 5 polybags arranged in the net house of Junaidy Jonik Farm, Sabah, Malaysia. The experiment was arranged in a completely randomized design with three replications. Data were subjected to analysis of variance with SAS version 9.4 and the significant means were separated by the least significant difference test at P<0.05. Significant differences were observed in the seed germinability measured; germination rate index (GRI), mean germination time (MGT) and final germination percentage (FGP), as well as on seedling vigour index (SVI) between treated and control seeds. Conversely, plant height, number of internodes, number of leaves and fresh weight of seedlings showed no significant differences among treatments. It was concluded that the use of GA3 was able to enhance chilli seeds germinability and could display a better SVI than the control. It is recommended to use GA3 treatment at 25 mg/L of concentration, as it may give an advantage to both economic and biological importance in producing higher germinability and seedling growth performance in chilli.

Application of the hydrotime model to assess seed priming effects on the germination of rapeseed (Brassica napus L.) in response to water stress

Botany ◽  
2020 ◽  
Vol 98 (5) ◽  
pp. 283-291
Author(s):  
Samaneh Tatari ◽  
Farshid Ghaderi-Far ◽  
Ahad Yamchi ◽  
Asieh Siahmarguee ◽  
Ali Shayanfar ◽  
...  
Keyword(s):  
Water Stress ◽  
Germination Rate ◽  
Seed Priming ◽  
Germination Percentage ◽  
The Other ◽  
Dormancy Breaking ◽  
Brassica Napus L ◽  
Hydrotime Model ◽  
Response To Water ◽  
Base Water Potential

Our aim was to determine whether the parameters of the hydrotime model can be used to compare the effects of seed priming treatments on germination. Seeds of three rapeseed cultivars (‘H61’, ‘H4815’, and ‘DK003’) were exposed to priming treatments and then their germination was tested at different water potentials. Seed priming improved the germination percentage, which was higher in ‘H4815’ than in the other two cultivars, and it increased germination rate (decreased θH) and uniformity (decreased σψb). The increase in germination rate was higher in PEG-osmoprimed than in NaCl-osmoprimed and hydroprimed seeds. The base water potential allowing 50% germination ([Formula: see text]) also was affected by seed priming, but the response of cultivars to different priming treatments varied. Compared with the control seeds, hydropriming of ‘H61’ seeds shifted ψb(50) toward negative values, whereas NaCl-osmopriming of ‘H4815’ seeds shifted ψb(50) toward negative values. On the other hand, priming of ‘DK003’ seeds shifted ψb(50) to more positive values and increased susceptibility to water stress. After dormancy-breaking and dormancy-induction treatments, ψb(50) shifted to more negative or positive values, indicating the release of primary dormancy and induction of dormancy, respectively. Therefore, priming treatments should be selected, depending on the environmental conditions anticipated to prevail during the germination of rapeseed seeds.

scholarly journals Pengaruh Posisi Skarifikasi Benih dan Perendaman Air Kelapa terhadap Perkecambahan Biji dan Pertumbuhan Bibit Sirsak (Annona muricata L.)

1970 ◽  
Vol 5 (1) ◽  
pp. 104-112
Author(s):  
Arya Agung Pranata ◽  
Asil Barus ◽  
Meiriani
Keyword(s):  
Seed Germination ◽  
Germination Rate ◽  
Block Design ◽  
Dry Weight ◽  
Germination Percentage ◽  
Coconut Water ◽  
Hard Seed ◽  
Randomized Block Design ◽  
Long Time ◽  
Germination And Growth

The problem of generative propagation of soursop is its seeds take a long time to germinate which are caused by the hard seed coat. The solution to solve that problem is scarification and coconut water soaking to simply the process of imbibition and seed germination and also stimulate the growth of shoot. This objective of the research was to determine the effect of the scarification position and the soaking with various concentrations of coconut water on seed germination and growth of soursop seedling. This research was held at the Faculty of Agriculture field, the University of Sumatera Utara in March - July 2017. The research used a factorial randomized block design with two factors and three replication. The first factor is the scarification position (without scarification, stomach scarification, top scarification) and the second factor is coconut water soaking (0%; 25%; 50%; 75 %). The result of the research showed that the germination rate parameter, germination percentage, crop height, number of leaves, root volume and dry weight of crop significantly higher on without scarification treatment than with scarification treatment. The interaction between the scarification position and soaking with various coconut water concentrations was not significantly affecting the seed germination and growth of soursop seedling.

scholarly journals SEED VIABILITY TEST OF COMMERSIAL DATES ON THE MARKET

2016 ◽  
Vol 4 (1) ◽  
Author(s):  
Ekosari Roektiningroem ◽  
Purwanti Widhy
Keyword(s):  
Room Temperature ◽  
Germination Rate ◽  
Seed Viability ◽  
Dry Weight ◽  
Germination Percentage ◽  
State University ◽  
Germination Test ◽  
Viability Test ◽  
Seed Moisture ◽  
Dark Orange

This research aims to to know the seed viability of the two dates on the market. It has been done from July to November 2014, in the laboratory of  Mathematics and Natural Science Faculty, Yogyakarta State University. The type of Dates seeds are Sayer (oval-cilindrical, ±3cm, dark orange brown/more light than another),  and Lulu (round, ±2cm, dark maroon reddish /more dark than Sayer’s). Viability test by germination testing; conducted on plastic tray with cotton sheet and fabric covered; fill with 100 grains of seeds. Repeated 4 times. Incubation at room temperature (±30oC). The parameters were seed fresh weight, seed dry weight, seed moisture, germination percentage and germination rate. The results were analyzed by compare mean - independent samples t test of SPSS 18’th. The results showed that the viability of both of Date’s seeds from local’s market (Sayer and Lulu) is high. Sayer’s have better viability than Lulu’s (due to the germination percentage and germination rate). Keywords: date seed, viability test, germination test

scholarly journals Effects of the environmental characters on germination properties of seeds of Thymus daenensis and T.vulgaris

2018 ◽  
Vol 63 (4) ◽  
pp. 343-354 ◽  
Author(s):  
Mehrab Yadegari
Keyword(s):  
Germination Rate ◽  
Germination Percentage ◽  
Negative Effects ◽  
Destructive Effect ◽  
Seed Vigour ◽  
Planting Depth ◽  
Sowing Depth ◽  
Ph Values ◽  
Upper Level ◽  
Germination Indices

This research was conducted to investigate the effects of salinity, temperature, pH and sowing depth on germination characters of two species of thyme in 2017. Two separate experiments with four replications using a randomized complete design were conducted in laboratory conditions. Treatments contained: a) fluctuating temperatures in a germinator 5/15, 10/20, 15/25, 15/30 and 20/3500C (day/night), b) concentrations of salinity by using solutions of 0, 10, 20, 40, 80, 160 and 320 mM NaCl, c) sowing depths of 0, 1.5, 3 and 6 cm, pH values of 5, 6, 7, 8 and 9. Results showed that the effects of different treatments were significant on germination percentage, germination rate and seed vigour. In most cases, upper concentrations of treatments had negative effects on germination indices. The emergence decreased with an increased concentration of salinity, planting depth and pH. In both species, the highest germination percentage (94%) was obtained in the combination treatment of 15/25C (day/night), 0 mM of NaCl, 1 cm of planting depth and pH=7. Germination was stopped in the combination of treatments of 35/20 (day/night), 320mM of NaCl, 6 cm of planting depth and pH=9. The combination of treatments in the upper level had a more inhibitory and destructive effect than single treatments.

Problems with using mean germination time to calculate rate of seed germination

2015 ◽  
Vol 63 (8) ◽  
pp. 631 ◽  
Author(s):  
Elias Soltani ◽  
Farshid Ghaderi-Far ◽  
Carol C. Baskin ◽  
Jerry M. Baskin
Keyword(s):  
Germination Rate ◽  
Germination Percentage ◽  
The Other ◽  
Seed Vigour ◽  
Or Groups ◽  
Germination Speed ◽  
Mean Germination Time ◽  
Treatment Comparisons ◽  
Time Spread ◽  
Mean Time

Seed scientists and other plant biologists are interested in the measurement of germination because seeds from different individuals, populations, seed lots and treatments can differ in germination percentages, rate (speed) and uniformity. Mean time to germination (MGT) is a measure of the rate and time-spread of germination; however, there is a problem with using this method to calculate germination rate. MGT does not show the time from the start of imbibition to a specific germination percentage. MGT has been used to compare specific pairs or groups of means and to evaluate seed vigour. However, it is not the real time to mean germination but just an index of germination speed. Using MGT is not correct for ANOVA, post-ANOVA or the other comparison tests, because it does not show time to a specific germination percentage. Thus, we recommend that t50 be used instead of MGT. The t50 has all benefits of MGT, but it does not have the problems of MGT in treatment comparisons.

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