scholarly journals SEED GERMINATION RATES OF DIFFERENT COOL SEASON LEGUMES

AGROFOR ◽  
2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Elpiniki SKOUFOGIANNI ◽  
Dimitrios BARTZIALIS ◽  
Kyriakos GIANNOULIS ◽  
Evangelia KANDRI ◽  
Nicholaos DANALATOS
Keyword(s):  
Pisum Sativum ◽  
Vicia Faba ◽  
Germination Rate ◽  
Lupinus Albus ◽  
Germination Percentage ◽  
Lathyrus Sativus ◽  
Vicia Sativa ◽  
Germination Process ◽  
Different Temperatures ◽  
Increasing Temperature

Temperature is the main factor affecting plant growth and development. Seedgermination and seedling establishment are the most critical stages in the life cycleof plants For the purposes of the study, the germination temperatures of six coolseasonlegumes (Vicia faba, Lens esculentus, Vicia sativa, Lupinus albus, Pisumsativum, and Lathyrus sativus) important cultivars were determined. Seedgermination rate was measured at different temperatures in the range 4-10 C in agrowth chamber with constant parameters (light, water) at three-day intervals for aperiod of three weeks. Each treatment was repeated four times for each temperaturevalue, where 100 seeds were placed in five different separate glass madecontainers. The measurements were taken at three-day intervals. A seed wasdeemed to have germinated when at least 1 mm of radicle was visible. It was foundthat pea germinated faster than the rest cultivars under low temperatures, whereasVicia sativa and Lathyrus sativus showed the slowest germination rates. Thedescending order of germination rate Pisum sativum> Vicia faba > Lensesculentus> Lathyrus sativus >Vicia sativa>Lupinus albus. Germination rateincreased with increasing temperature for all cultivars. Lupinus albus was thelegume seed with the less germination percentage. Therefore, temperature is themost limited factor on germination process and the increase of 4 degrees is enoughto give better germination results. As a general conclusion, Pisum sativum andVicia faba may satisfactorily germinate in rather cool micro-environments, andtheir sowing in the fall may be postponed for some weeks without substantialgermination risk comparing to the rest legume cultivars.

Temperature Effect on Seed Germination Performance of a Local Variety of Onion in Bangladesh

2021 ◽  
Vol 1 (01) ◽  
pp. 27-30
Author(s):  
IRANI KHATUN ◽  
RIYAD HOSSEN
Keyword(s):  
Seed Germination ◽  
Temperature Effect ◽  
Performance Test ◽  
Germination Rate ◽  
Germination Percentage ◽  
Optimum Range ◽  
Local Variety ◽  
Different Temperatures ◽  
Local Farmers

Seed germination performance test of Taherpuri onion (a local variety of onion) under six different temperatures (15, 20, 25, 30, 35 and 40°C) was the main goal of this experiment. Germination percentage (GP) was calculated at highest 60.25% at 25°C, and the highest germination rate 20.08 was observed in the same temperature condition. The lowest germination performance (13.25 % germi-nation and 3.32 seeds per day as germination rate) was found at 40°C temperature. Finally, the authors mentioned the temperature 20 to 30°C as optimum range, and suggested the temperature 25°C as best suited for obtaining highest results in case of both germination percentage and germination rate of these seeds. To produce maximum seedlings of the local variety of onion, the mentioned temperature should be followed by the local farmers.

scholarly journals Redistribution of phosphorus in soil through cover crop roots

2004 ◽  
Vol 47 (3) ◽  
pp. 381-386 ◽  
Author(s):  
Júlio C. Franchini ◽  
Marcos A. Pavan ◽  
Mário Miyazawa
Keyword(s):  
Pisum Sativum ◽  
Cover Crops ◽  
Cover Crop ◽  
Lupinus Albus ◽  
Growth Period ◽  
Soil Surface ◽  
Phosphate Fertilizer ◽  
Vicia Sativa ◽  
Crop Species ◽  
Soil P

The objective of this study was to evaluate if cover crops can absorb P from the upper layers and transport it in their roots to subsoil layers. Samples of an Oxisol were placed in PVC columns. Super phosphate fertilizer was applied to the 0-10 cm soil surface layers. The cover crops tested were: Avena strigosa, Avena sativa, Secale cereale, Pisum sativum subsp arvense, Pisum sativum, Vicia villosa, Vicia sativa, Lupinus angustifoliu, Lupinus albus, and Triticum aestivum. After a growth period of 80 days the cover crop shoots were cut off and the soil was divided into 10cm layers and the roots of each layer were washed out. The roots and shoots were analyzed separated for total P contribution to the soil. Considerable amount of P was present in the roots of cover crops. Vicia sativa contained more than 60% of total plant P in the roots. The contribution of Vicia sativa to soil P bellow the fertilized zone was about 7 kg ha-1. It thus appeared that there existed a possibility of P redistribution into the soil under no tillage by using cover crops in rotation with cash crops. Vicia sativa was the most efficient cover crop species as P carrier into the roots from superficial layer to lower layers.

scholarly journals Germination of Dracaena cinnabari Balf.f. Seeds under Controlled Temperature Conditions

Forests ◽  
2020 ◽  
Vol 11 (5) ◽  
pp. 521
Author(s):  
Lucie Bauerová ◽  
Shiferaw Alem Munie ◽  
Kateřina Houšková ◽  
Hana Habrová
Keyword(s):  
Germination Rate ◽  
Germination Percentage ◽  
T Test ◽  
Test Results ◽  
Optimal Temperature ◽  
Artificial Regeneration ◽  
Seed Collection ◽  
Different Temperatures ◽  
Test Result ◽  
Dracaena Cinnabari

Research highlights: This study is focused on the germination of Dracaena cinnabari seeds in order to discover the possibility of natural and artificial regeneration of this species. Background and Objectives: This study aimed to determine the optimal temperature for D. cinnabari seed germination, e.g., the temperature at which the germination percentage and germination rate (vitality) are the highest. The objectives of this study are to: (1) determine the optimal temperature for the germination of D. cinnabari seeds, (2) compare the suitability of different seed collection methods, and (3) compare the germination parameters of seeds that were collected from different localities. The results of this study will contribute to obtaining the highest number of seedlings from limited seed material for reforestation of the most endangered localities of D. cinnabari species. Materials and methods: Four seed sections were employed. These sections were directly collected from either the fruits of a cut panicle or the ground and were obtained from different localities that differ in altitude. The seeds were tested in a greenhouse while using Petri dishes at three different temperatures—22, 26, and 30 °C—with four replicates of 25 seeds of each section. ANOVA and the t-test were employed for data analysis. Results: The highest germination percentages (GPs) were achieved at 26 °C and 30 °C, which were 84.6% and 82.5%, respectively. The ANOVA and t-test results showed that the germination index (GI) of the species was relatively higher at a temperature of 30 °C relative to that at other temperatures in the study. Although seeds that were collected from the tree achieved a higher GP, the t-test result showed no significant differences in the GI of D. cinnabari seeds that were collected from the ground and from the tree (p > 0.05). Overall, the findings of this study show that temperature has substantial influence on the germination of seeds of D. cinnabari. Therefore, we recommend a temperature of 30 °C to facilitate the germination of D. cinnabari, as it achieved the highest GI at this temperature relative to that at the other temperatures (22 °C, 26 °C) applied in this study.

scholarly journals A Novel Method to Overcome Coat-Imposed Seed Dormancy in Lupinus albus L. and Trifolium pratense L.

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Iskender Tiryaki ◽  
Mustafa Topu
Keyword(s):  
Seed Dormancy ◽  
Trifolium Pratense ◽  
Germination Rate ◽  
Lupinus Albus ◽  
Red Clover ◽  
Treatment Method ◽  
Germination Percentage ◽  
Hot Water ◽  
White Lupin ◽  
Novel Method

We have developed a novel method to overcome coat-imposed seed dormancy in legume plants. Seeds of Lupinus albus L. and Trifolium pratense L. were stored in a freezer at −80°C for a period of time and then immediately treated with or without hot water at 90°C for 5 seconds. Germination tests were carried out in darkness at 20±1.0°C with four replications in a completely randomized design. Final germination percentage (FGP), germination rate, and synchrony of seeds were evaluated. The results showed that new approach of freeze-thaw scarification provided high percentage of germinations in white lupin (84.16%) and red clover (74.50%) seeds while control seeds had FGPs of 3.3% and 26.0%, respectively. The immediate thawing of frozen seeds in hot water for 5 seconds was found not only an effective and reliable but also the quickest seed treatment method to prevail against coat-imposed seed dormancy in legume species and may become operationally applicable to other plant species.

scholarly journals Seed colour affects light and temperature requirements during germination in two Lotus species (Fabaceae) of the Arabian subtropical deserts

2016 ◽  
Vol 64 (2) ◽  
pp. 483 ◽  
Author(s):  
Arvind Bhatt ◽  
Sanjay Gairola ◽  
Ali A. El-Keblawy
Keyword(s):  
United Arab Emirates ◽  
Germination Rate ◽  
Germination Percentage ◽  
Survival Strategy ◽  
Desert Environment ◽  
Seed Colour ◽  
Colour Variation ◽  
Temperature Requirements ◽  
Different Temperatures

<p>The effect of seed colour on germination behavior and both light and temperature requirements was assessed in <em>Lotus glinoides </em>and <em>Lotus </em><em>halophilus</em> (Fabaceae) from the hyper-arid deserts of the United Arab Emirates. Germination was assessed in term of both final germination level (percentage) and germination rate, as expressed by Timson’s germination velocity index. <em>Lotus glinoides</em> produces black and yellow-colored seeds and <em>L. halophilus</em> produces green and yellow seeds. Different seed lots were germinated in both light and darkness at different temperatures. Yellow seeds of the two species attained significantly lower germination, compared to black and green seeds. There was no specific light or temperature requirements for the germination of the two coloured seeds of <em>L. glinoides</em>; the effect of interactions between seed colour and both light and temperature of incubation on final germination percentage were not significant. In <em>L. halophilus</em>, green seeds germinated significantly more in both light and darkness at lower temperatures (15/25 °C) and in light at higher temperatures (25/35 °C), compared to yellow seeds. Yellow seeds germinated faster, compared to black at 15/25 °C in <em>L. glinoides </em>and compared to green seeds at15/25 °C and 25/35 °C in <em>L. halophilus</em>. Seed colour variation, at least in <em>L. halophilus</em><em>,</em> could be a survival strategy that would determine the time of germination throughout the year in the unpredictable desert environment.</p>

scholarly journals Morphometry and Germination of Passovia pyrifolia, Struthanthus marginatus and Phoradendron mucronatum Diaspores

2018 ◽  
Vol 36 (0) ◽  
Author(s):  
J.M.L. AZEVEDO ◽  
C.G.G. SANTOS ◽  
C.S. CAIRES ◽  
J.C. ARAÚJO NETO ◽  
R.C. SOUZA
Keyword(s):  
Moisture Content ◽  
Germination Rate ◽  
Germination Percentage ◽  
Percentage Germination ◽  
Essential Characteristic ◽  
Germination Time ◽  
Randomized Design ◽  
Different Temperatures ◽  
Mean Germination Time ◽  
Completely Randomized Design

ABSTRACT: The goal of this work was to characterize morphometrically diaspores from three species of mistletoes (Passovia pyrifolia, Struthanthus marginatus e Phoradendron mucronatum), as well as to study its germination behavior according to temperature and luminosity. In germination tests, the completely randomized design was used, in factor scheme 4 x 2, with 4 replications of 15 diaspores. The factors for the first test were different temperatures and two diaspore conditions (intact and without epicarp). In the second test, factors were different light qualities and two diaspore conditions. The analyzed variables were: germination percentage, germination rate index (GRI) and mean germination time (MGT). Mistletoe’s diaspores present an elliptic shape with viscin layer, an essential characteristic for the dispersion of the species. In addition to this, they present a distinction as for the moisture content when compared to the Loranthaceae and Viscaceae, where the latter presents the highest content. Germination is greater at the alternated temperature of 20-30 oC for P. pyrifolia and P. mucronatum diaspores and 20 oC for S. marginatus. Luminosity interfered in the germination of P. mucronatum and S. marginatus but did not influence P. pyrifolia. The diaspore condition influenced the germination of the three studied species, observing a significant increase in their germination when the epicarp was removed. Temperature and luminosity interfere directly in the GRI and MGT of the three mistletoes species.

scholarly journals Optimal temperature for germination and seedling development of cowpea seeds

2020 ◽  
Vol 14 (2) ◽  
Author(s):  
Juliane Rafaele Alves Barros ◽  
Francislene Angelotti ◽  
Jéssica De Oliveira Santos ◽  
Rodrigo Moura e Silva ◽  
Barbara França Dantas ◽  
...  
Keyword(s):  
Seed Germination ◽  
Germination Percentage ◽  
Seedling Development ◽  
Optimal Temperature ◽  
Cowpea Cultivars ◽  
Cowpea Seeds ◽  
Germination Process ◽  
Germination Speed ◽  
Increasing Temperature ◽  
Climatic Elements

Temperature is one of the climatic elements that affect most the germination process and seedling development. Thus, the objective of this study was to evaluate the germination and seedling development of cowpea cultivars under increasing temperature. The seeds of the cultivars Acauã, Carijó, Guariba, Gurguéia, Itaim, Juruá, Pajeú, Potengi, Pujante, Rouxinol, Tapahium, and Tumucumaque were kept in germination chamber at temperatures of 20, 25, 30, 35 and 40°C, with photoperiod of 12 h. Cowpea seeds have optimal germination performance and seedling development at temperatures in the range of 30.49 - 35.48°C. The cultivars presented germination percentage above 91% under 40°C, however, the seedling were abnormal. The temperature of 20°C provided germination above 96%, but with a longer period to germinate. The temperature range between 30 - 35°C favored the germination speed index, average time, and seed germination speed, with optimum temperatures varying between the cultivars. The highest rate of normal seedlings was observed at temperatures between 25 and 35°C.

Effect on Germination and Growth of Soybean Seed after Laser Radiation

2011 ◽  
Vol 58-60 ◽  
pp. 453-457
Author(s):  
Wei Li ◽  
Wei Kai Li ◽  
Xing Wei Qi ◽  
He Li
Keyword(s):  
Experimental Data ◽  
Laser Radiation ◽  
Germination Rate ◽  
Soybean Seed ◽  
Germination Percentage ◽  
Nutrient Supply ◽  
Experimental Result ◽  
Soybean Seedlings ◽  
Germination Process ◽  
Germination And Growth

In this paper, the effect of laser radiation on the germination percentage and growth of soybean seed is introduced. The experimental result demonstrate that soybean seed various measurement value is optimum when the soybean seed was irradiated on the seed hilum for 10 minute, using He-Ne laser of 5mw. And the experimental results is also most significant when the soybean seed was irradiated on the seed hilum for 90 second, using He-Ne laser of 40mw. It is founded the experimental data is not significant if the dose of He-Ne laser is less and soybean growth is restrained if the dose of He-Ne laser is more. This shows proper dose of He-Ne laser of soybean seed conducted radiation, promoted soybean seed enzyme activity enhanced, its germination process, the nutrient supply full, thereby improving the soybean seed germination rate, soybean seedlings plant height and chlorophyll content. The results offer us a reference for laser radioactive breed and Laser Biology.

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