scholarly journals Evaluation of Seed Germination of Sorghum bicolor Grown After Priming with Leaf Extract and Milky Sap Exudate of Calotropis procera

2021 ◽  
Vol 9 (3) ◽  
pp. 110-113

A pot experiment was conducted to investigate the effect of priming with the extract of plant Calotropis procera on seed germination of Sorghum bicolor. The seeds of Sorghum bicolor were primed with different concentrations of Calotropis procera leaf extract and milky sap exudate for five days at different time intervals. In total, there were five groups of days and nine seed priming treatments. The result showed that maximum seeds were germinated on day 4 in all treatments, but it was not significantly different from day 2, 3, and day 5. Whereas the highest germination of seeds was noted in two treatments, 24 hours priming with 100% boiled leaves extract (T3) and 24 hours priming with 100% milky exudate (T4), irrespective of priming days, except one day. These results showed that both milky exudate and boiled leaf extract have a positive effect on seed germination of Sorghum bicolor; therefore, in the future, both types of extracts of Calotropis procera should be considered important for priming the seeds of different plants to improve seed germination.

2017 ◽  
Vol 3 (1) ◽  
pp. 140-144
Author(s):  
A Rokib ◽  
MS Monjil

Effectiveness of six fungicides viz., Provax-200 (Carboxin+Thiram), Bavistin DF (Carbendazim), Dithane M-45 (Mancozeb), Secure (Mancozeb+Fenamidone), Antracol (propineb) and Daconil (Chlorothalonil) were evaluated to improve seed germination and seedling vigour of lentil variety BINA Masur-3. The experiment was conducted in the Green House of Seed Pathology Centre, Bangladesh Agricultural University, Mymensingh. Positive effect of seed treatment with fungicides on seed germination and seedling vigour of lentil was recorded. At 20 DAS, increased seed germination over control was observed in treated seeds with Deconil (10.40%) and Antracol (10.00%) followed by Dithane M-45 (7.20%). Seeds treated with Deconil and Dithane M-45 produced seedlings with higher shoot length, root length and seedling vigour. At 20 DAS, higher percent increased vigour index over control was found in Dithane M-45 (24.64%) and Deconil (22.44%), respectively.Asian J. Med. Biol. Res. March 2017, 3(1): 140-144


2011 ◽  
Vol 19 (1) ◽  
pp. 103-109 ◽  
Author(s):  
Xiao-Huan YANG ◽  
Jin-Hu MA ◽  
Shu-Jin GUO ◽  
Xin-Ji LI ◽  
Sheng LI

Author(s):  
Shrestha A ◽  

Black gram despite being one of the major grain legumes in the mid-hills of Nepal, poor germination is a problem in its cultivation. Seed priming is an accepted technique to improve seed germination. An experiment was therefore, conducted to study effect of priming using various priming agents on germination characteristics of Black gram.


2006 ◽  
Vol 86 (1) ◽  
pp. 143-148 ◽  
Author(s):  
W. D. Zhang ◽  
J. J. Bi ◽  
T. Y. Ning ◽  
X. L. Liu ◽  
M. R. He

Leymus chinensis (Trin.) Tzvel., a perennial cool-season grass distributed widely in eastern Asia, is an ideal species for the rangeland industry and soil conservation, but the seed has a long dormant period and low germination rates. This study examined the effects of temperature, light and various treatments including stratification, H2SO4, NaOCl, gibberellic acid (GA3) and 6-benzyl adenine (BA), on the germination of Leymus chinensis seed. Seed stored over 1 yr and germinated at a temperature regime of 25/15°C with a 12/12-h photoperiod germinated best, and had a germination rate of 30.3%, with a minimum germination time of 12 d. In these germination conditions, germinated seeds were counted after 15 d to determine the effects of other treatments upon freshly harvested seed germination. The final germination rate for freshly harvested seeds stratified at 4°C for 0 to 10 wk ranged from 8.5 to 37.3%. Germination rates were 14.0 and 14.8% when seeds were treated with 70% H2SO4 for 3 and 6 min, respectively. Seed treated with 5.0% NaOCl germinated 17.5 and 16.0% when treated for 10 and 20 min, respectively. When seeds were soaked in 1000 mg L-1 GA3 solution for 24 h, 42.3% germinated, while treatment with 50 mg L-1 of BA resulted in 50.3% germination. The results indicate that various dormancy mechanisms may exist in the species. These findings will be helpful to farmers and breeders in selecting suitable treatments to improve seed germination and establishment. Key words: Seed dormancy, grassland and sand-dune reclamation, photoperiod, Northern China, Poaceae, seed priming


Author(s):  
Ashok S. Sajjan ◽  
M. S. Dhanelappagol ◽  
R. B. Jolli

Experiment was conducted in the Seed Testing Laboratory during 2013 and 2014 at RARS, UAS Campus, Vijayapur, Karnataka State. The seeds were primed by soaking in different leaf extracts and chemical solution for one hour and then decanted the extracts and seeds were air dried under the shade to bring back to their original moisture content and used for seed quality studies. Seed germination was significantly influenced by age of the seeds and its interaction with botanicals and chemicals. Among the treatments, botanicals viz., Prosopis leaf extracts @ 2per cent recorded higher seed germination followed by Pongamia leaf extract @ 2per cent. Whereas, in chemicals higher germination was seen in KNO3@ 0.5 per cent but at par with CaCl2 .2H2O @ 2 per cent. Lower seed germination was obtained with water soaked and control. The present investigation indicate that, seed priming with 2.0 per cent Prosopis leaf extract for one hours soaking enhanced the seed and seedling quality characters, and hence it could be adopted as a pre-sowing seed priming treatment in pigeon pea.


2019 ◽  
Vol 20 (3) ◽  
pp. 540 ◽  
Author(s):  
Katarzyna Lechowska ◽  
Szymon Kubala ◽  
Łukasz Wojtyla ◽  
Grzegorz Nowaczyk ◽  
Muriel Quinet ◽  
...  

Seed priming is a pre-sowing method successfully used to improve seed germination. Since water plays a crucial role in germination, the aim of this study was to investigate the relationship between better germination performances of osmoprimed Brassica napus seeds and seed water status during germination. To achieve this goal, a combination of different kinds of approaches was used, including nuclear magnetic resonance (NMR) spectroscopy, TEM, and SEM as well as semi-quantitative PCR (semi-qPCR). The results of this study showed that osmopriming enhanced the kinetics of water uptake and the total amount of absorbed water during both the early imbibition stage and in the later phases of seed germination. The spin–spin relaxation time (T2) measurement suggests that osmopriming causes faster water penetration into the seed and more efficient tissue hydration. Moreover, factors potentially affecting water relations in germinating primed seeds were also identified. It was shown that osmopriming (i) changes the microstructural features of the seed coat, e.g., leads to the formation of microcracks, (ii) alters the internal structure of the seed by the induction of additional void spaces in the seed, (iii) increases cotyledons cells vacuolization, and (iv) modifies the expression pattern of aquaporin genes.


2021 ◽  
Vol 5 (2) ◽  
pp. 111-114
Author(s):  
Anuj Lamichhane ◽  
Mamata K.C. ◽  
Manisha Shrestha ◽  
Binaya Baral

Seed priming is an effective, eco-friendly method to promote seed germination and seedling vigor of okra to overcome the reduced and delayed germination in fresh or stored okra seeds caused by seed hardness. An experiment was carried to evaluate the effects of different priming on okra seeds germination and seedling vigor using Arka Anamika variety at Horticulture lab of Agriculture and Forestry University, Rampur, Chitwan, Nepal. Investigation was carried out with 6 treatments (T1: seed priming with tap water, T2: seed priming with 200ppm NAA solution, T3: seed priming with 10% PEG-200 solution, T4: seed priming with 200ppm GA3 solution, T5: seed priming with 5% Trichoderma solution and T6 no priming) with 4 replications in Complete Randomized Design (CRD). Seeds primed with T1 to T5 were soaked for 24 hours and shade dried for 6 hours before sowing. Priming with T4 was found to be best in terms of maximum seed germination (60.12%), seed vigor index (5772.68 cm), mean germination rate (7.53 seeds per day). The highest shoot length (81.40 mm) was observed at T1 whereas enhancement of root length occurred with the priming with T3. All treatments had a significant positive effect on all the germination parameters in comparison to control. The study concluded that GA3 priming enhanced germination as well as seed vigor in okra and hydro priming and tricho-priming can be used as an alternative to GA3 priming among farmers in Nepal.


Author(s):  
A. S. Koval

This article is devoted to the studying hermeneutic circle in the development of methodological culture of future music teacher. Under the conditions of globalization processes, tendencies of convergence of world cultures improvement of culturological training of student youth requires new approaches, in particular, culturological training of students of pedagogical specialties. The task of pedagogical education is to develop a teacher as a specialist and as a person of high culture, who has a special positive effect on the personality of school student. This article analyses the works of scientists dedicated to the issues of establishment and development of the hermeneutic approach in philosophical, psychological, and logical and gnosiological contexts. It is defined the essence of the concept of “hermeneutic circle” as one of the basic principles of the hermeneutic approach. There have been provided the examples of interpretation of the principle of hermeneutic circle by various scientists. Hermeneutic approach is applied in sciences such as pedagogy, psychology, economics, sociology etc. In pedagogical science the hermeneutic approach at the level of conceptual use was elaborated by A. Zakirova. She introduced the term “pedagogical hermeneutics”. Hermeneutic circle as a principle of text understanding is based on the interrelation of the part and the whole. Understanding of the whole consists of the understanding of the individual parts, and understanding of the parts requires understanding of the whole. The concepts of the part and the whole are correlated: the text is a part concerning the whole creative activity of the author, which in its turn is a part of the particular genre or literature in general, as well as the part of spiritual life and biography of the author. The idea of hermeneutic circle means also that there is no understanding of the text without certain prerequisites: understanding is preceded by some idea of what is yet to understand. There have been determined the peculiarities of the use of the principle of hermeneutic circle in the development of methodological culture of the future teacher of musical art. In light of hermeneutical trends, the penetration of which in the realm of musical art can be traced quite clearly, the use of the hermeneutic circle principle in the development of methodological culture of the future teacher of musical art appears not only in the narrow interpretation of the particular phenomenon or group of phenomena, but much wider — as a means of learning and understanding of the worldview by a person.


Sign in / Sign up

Export Citation Format

Share Document