Some effects of different forest litters on seed germination and growth

1981 ◽  
Vol 11 (3) ◽  
pp. 710-714 ◽  
Author(s):  
Clifford E. Ahlgren ◽  
Isabel F. Ahlgren
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Natural Habitat ◽  
Habitat Preferences ◽  
Successional Stages ◽  
Germination And Growth ◽  
Native Herbs

Germination and growth of 12 native herbs, shrubs, and trees were followed in five litter components characteristic of successional stages of the northeastern Minnesota forest. Various litter components stimulated or inhibited seed germination and seedling growth of some species. Germination and growth were not always similarly affected, suggesting that different factors may be involved. Inhibition and lack of inhibition of some species on certain litter components correlate with natural habitat preferences of these species and the nature of the litter in these habitats. This information can be of use in improving results of seeding for site reclamation and reforestation.

Allelopathic Effects of Lantana (Lantana camara) on Milkweedvine (Morrenia odorata)

Weed Science ◽  
1984 ◽  
Vol 32 (6) ◽  
pp. 757-761 ◽  
Author(s):  
Nagi Reddy Achhireddy ◽  
Megh Singh
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Germination Percentage ◽  
Lantana Camara ◽  
Test Period ◽  
Percentage Germination ◽  
Allelopathic Activity ◽  
Foliar Symptoms ◽  
Allelopathic Effects ◽  
Germination And Growth

Allelopathic effects of lantana (Lantana camaraL. ♯3LANCA) residues (root, shoot), foliar leachates, and the soil (where lantana was grown) on milkweedvine (Morrenia odorataLindl. ♯3MONOD) seed germination and growth over a 30-day period were examined. Foliar leachates or the soil collected from the field where lantana had been growing had no effect on the final germination percentage or the seedling growth of milkweedvine. Incorporation of dried lantana shoot or root material into soil had no effect on the final percentage germination but caused significant reductions in milkweedvine growth over a 30-day test period. Roots were more inhibitory than shoots. Fifty percent of milkweedvine seedlings died within 15 days after germination at 1% (w/w) dried lantana root incorporation into the soil, and higher concentrations increased seedling death. Lantana roots incorporated into the soil produced foliar symptoms such as wilting and desiccation, whereas lantana shoots incorporated into the soil produced yellowing of the foliage of milkweedvine. Allelopathic activity of lantana residues was still strong even after decomposition of lantana residues for 4 weeks prior to the planting of milkweedvine seeds.

scholarly journals Microbial inoculant influences the germination and growth of Albizia lebbeck seedlings in the nursery

2016 ◽  
Vol 26 (1) ◽  
pp. 82-89
Author(s):  
B. M. Khan ◽  
M. A. Kabir ◽  
M. K. Hossain ◽  
M. A. U. Mridha
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Volume Index ◽  
Cow Dung ◽  
Albizia Lebbeck ◽  
Positive Role ◽  
Total Pigment ◽  
Vigor Index ◽  
Collar Diameter ◽  
Germination And Growth

Microbial inoculants (MI), a biofertilizer, composed of many different beneficial microorganisms has positive role on seed germination and growth of plants. In the present study, its efficacy on seed germination and seedling growth of Albizia lebbeck in the nursery was studied. The seeds were sown in polybags filled with a mixture of forest soil and cow dung (3:1) and treated with 0.1%, 0.5%, 1%, 2%, 5% and 10% concentrations of MI. Most of the parameters studied (seed germination, shoot and root lengths, dry weights of shoot and root, collar diameter, leaf number etc) were found maximum in 2% of MI . Although the highest vigor index, volume index and quality index (7053, 3738 and 1.106, respectively) were found in 2% MI, but the highest sturdiness (65.95) was found in 1% MI solution. The nodule number was higher at a very low (0.5%) concentration of MI but it normally decreased with the increase of concentration. Total pigment content in leaf was recorded highest (112.86 mg.L-1) in 2% of MI. Therefore, MI influences seed germination and seedling growth of A. lebbeck and the low concentration (2%) of the inoculant can be recommended for getting maximum seed germination and seedling growth of the species studied.Banko JanakariA Journal of Forestry Information for NepalVol. 26, No. 1, Page: 82-89, 2016

scholarly journals Effects of Plasma Focus on Seed Germination and Seedling Growth of 14 Thai Rice Varieties

2021 ◽  
Vol 18 (14) ◽  
Author(s):  
Vichai PURIPUNYAVANICH ◽  
Arlee TAMMAN ◽  
Piyanuch ORPONG ◽  
Roppon PICHA ◽  
Mayuree LIMTIYAYOTHIN ◽  
...  
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Plasma Focus ◽  
Germination Rate ◽  
Growth Reduction ◽  
Rice Varieties ◽  
X Ray ◽  
Plasma Irradiation ◽  
Germination And Growth ◽  
Storage Energy

Thailand Plasma Focus 2 (TPF-2) is operated at 2.16 kJ of storage energy with argon as a filled gas and can emit sharp x-ray pulses to plant cells in nanosecond (10-9 s) duration. The effects of plasma focus x-ray on seed germination and seedling growth of 14 Thai rice varieties treated under 10 conditions; 0 (control), 2, 4, 6, 8, 10, 12, 14, 16, and 18 plasma focus shots, were investigated. The results show that the germination rates and growth reduction rates were significantly different among the rice varieties. The germination rate of 10 varieties (Jek Chuey, KDML105, LPT123, PTT1, RD41, RD47, RD49, RD67, RD79, and SPR2) decreased when treated with a high number of plasma focus shots. LD50 and GR50 values were calculated, except for KTH17, RD1, RD7, and RD31 whose germination only slightly decreased, or remained constant, even after they were treated by 18 plasma focus shots. HIGHLIGHTS Effects of plasma focus irradiation on germination and growth were assessed on 14 Thai rice varieties  Shoot and root lengths of rice seedlings were measured 10 days after of plasma treatment Plasma focus was operated at 12 kV and the number of plasma focus shots was varied from 0 (control) to 18 shots Sensitivity to plasma irradiation was found to differ among rice seeds tested GRAPHICAL ABSTRACT

The effect of salinity and temperature on seed germination and growth of Hordeum jubatum

1974 ◽  
Vol 52 (6) ◽  
pp. 1357-1362 ◽  
Author(s):  
Irwin A. Ungar
Keyword(s):  
Seed Germination ◽  
Salinity Stress ◽  
Seedling Growth ◽  
Salt Concentration ◽  
Salt Solution ◽  
Osmotic Potential ◽  
Active Growth ◽  
Hordeum Jubatum ◽  
Germination And Growth ◽  
Germination Stage

Studies on the germination of Hordeum jubatum seeds indicate that they were highly tolerant of salinities up to 1.0%, with little reduction in germination. Each increase in salt concentration did, however, delay the time of germination. Seedling growth proved to be more sensitive than germination to salinity stress, with newly germinated plants showing a decrease in size with each salinity increment. Results of growth studies were similar to those in germination tests; plants decreased in size with decreased osmotic potential of the salt solution. The germination stage and later periods of active growth were nearly equal in their ability to withstand salinity stress.

Effect of Co2+ and Ni2+ on Seed Germination and Seedling Growth of Oilseed Rape

2013 ◽  
Vol 807-809 ◽  
pp. 976-979
Author(s):  
Qing Song Yang ◽  
Yan Zhao
Keyword(s):  
Heavy Metals ◽  
Seed Germination ◽  
Oilseed Rape ◽  
Seedling Growth ◽  
Metal Toxicity ◽  
Growth Stage ◽  
Early Growth ◽  
Early Growth Stage ◽  
Germination And Growth ◽  
Factor Governing

Metal toxicity is an important factor governing germination and growth of plants. We have investigated how Co2+and Ni2+treatment affected germination and early growth stage of oilseed rape (Brassica napusL.). The results showed that the single pollution of Co2+was capable to stimulate the seed germination and seedling growth of oilseed rape at lower concentration, but the phenomena did not exist by the single pollution of Ni2+. Not only polluted by Co2+ but also by Ni2+, all indexes of germination and growth reduced gradually at higher concentration among examined concentration of heavy metals. Meanwhile, effects of Ni2+single pollution were stronger than that of Co2+single pollution.

scholarly journals Water Quality Demonstrates Detrimental Effects on Two Different Seeds during Germination

2019 ◽  
Vol 7 (3) ◽  
pp. 377-389
Author(s):  
Moumita Maity ◽  
Gourab Chatterjee ◽  
Rajarshi Banerjee
Keyword(s):  
Water Quality ◽  
Seed Germination ◽  
Seedling Growth ◽  
Root Hairs ◽  
Reducing Sugar ◽  
Polluted Water ◽  
Total Carbohydrate ◽  
Quality Of Water ◽  
Germination And Growth ◽  
Biochemical Assessment

The study was aimed to determine the effects of water quality on seed germination and seedling growth of Cicer arietinum and Brassica juncea under laboratory condition at Haldia, West Bengal. Water from four different water bodies was examined including one control. Both the plant seeds and seedlings were treated for 15 days; and this was carried for three times in a year with each type of water. The germination and growth was observed for two weeks and mean readings were taken in the result. Shoot length, root length, number of root hairs, root hair length, and some biochemical assessment were determined. Biochemical assessment includes total carbohydrate, reducing sugar, total non-reducing sugar, protein content and total DNA. It was observed through all the parameters that the seed germination and growth of seedlings were highly sensitive to the quality of water and the polluted water exerted a kind of stress level to their growth. From the result it could be concluded that different quality water had significantly affected the seed germination and seedling growth of two species of plants assessed.

Allelopathic Potential of Wheat (Triticum aestivum) Straw on Selected Weed Species

Weed Science ◽  
1982 ◽  
Vol 30 (5) ◽  
pp. 495-497 ◽  
Author(s):  
James W. Steinsiek ◽  
Lawrence R. Oliver ◽  
Fred C. Collins
Keyword(s):  
Triticum Aestivum ◽  
Seed Germination ◽  
Seedling Growth ◽  
Weed Seed ◽  
Weed Species ◽  
Allelopathic Potential ◽  
Ipomoea Lacunosa ◽  
Sesbania Exaltata ◽  
Pitted Morningglory ◽  
Germination And Growth

The allelopathic potential of wheat [Triticum aestivum(L.) ‘Doublecrop′] straw residue was evaluated on weed-seed germination and seedling growth. The inhibition of weed-seed germination and seedling growth was extract-, species-, and temperature-dependent. The extracts prepared by agitating and soaking caused greater inhibition than those obtained by leaching. The descending order of species susceptibility was ivyleaf morningglory [Ipomoea hederacea(L.) Jacq.], velvetleaf (Abutilon theophrastiMedic.), pitted morningglory (Ipomoea lacunosaL.), hemp sesbania [Sesbania exaltata(Raf.) Cory], sicklepod (Cassia obtusifoliaL.), and Japanese barnyard millet [Echinochloa crus-gallivar.frumetaceae(Roxb.) Link]. Incubation at 35 C caused the greatest inhibition of germination and growth.

scholarly journals (231) Habitat-correlated Germination and Growth Characteristics in Intermountain Allium (Liliaceae)

HortScience ◽  
2006 ◽  
Vol 41 (4) ◽  
pp. 1025D-1025
Author(s):  
Nathan C. Phillips ◽  
Daniel T. Drost ◽  
Bill Varga ◽  
Leila Shultz ◽  
Susan E. Meyer
Keyword(s):  
Seed Germination ◽  
Seed Dormancy ◽  
Seedling Growth ◽  
Leaf Senescence ◽  
Seedling Survival ◽  
Elevation Gradient ◽  
Growth Characteristics ◽  
Survival Strategies ◽  
Spring Ephemerals ◽  
Germination And Growth

Seed germination timing strategies and seedling growth characteristics in wild populations have evolved in response to their life history, ecology, and habitat. In this study, we examined the ecophysiological aspects of seed germination and growth in three Allium species native to the Intermountain West (A. acuminatum, A. brandegei, and A. passeyi). Three populations of each species were studied along an elevation gradient resulting in low, mid, and high elevation sites for each species. We investigated seed dormancy patterns within and among species and their relation to habitat. Seeds collected at the study sites were subjected to cold (3 °C) moist stratification in low light to simulate the natural winter environment under snow. Stratification periods ranged from 0 to 24 weeks. After stratification, seeds were placed in lighted growth chambers at 8 °C to simulate the natural spring environment. Germination was observed for 4 weeks. Germinated seeds were then grown at either 12 °C or 16 °C until leaf senescence. Destructive sampling occurred at 2, 4, and 8 weeks. Bulb mass and water content were also assessed after leaf senescence. In the germination experiment, all species responded favorably to cold moist stratification, suggesting physiological seed dormancy. Germination percentages among species varied greatly with 98% germination in A. acuminatum, but only 33% in A. brandegei. Seedling survival and growth varied among species and in response to growing temperature. Observed patterns in seed germination and growth are typical of survival strategies in other spring ephemerals. Seed dormancy traits and seedling growth characteristics in these species have evolved to allow optimal success for their specific habitat.

Effects of Biogas Slurry Pretreatment on Germination and Seedling Growth of Vicia faba L.

2014 ◽  
Vol 955-959 ◽  
pp. 208-212 ◽  
Author(s):  
Yan Zhao ◽  
Qing Song Yang ◽  
Shu Yang ◽  
Hong Mei Zhao ◽  
Qing Song Duan ◽  
...  
Keyword(s):  
Seed Germination ◽  
Vicia Faba ◽  
Seedling Growth ◽  
Germination Rate ◽  
Germination Index ◽  
Biogas Slurry ◽  
Seed Soaking ◽  
Germination Potential ◽  
Faba Beans ◽  
Germination And Growth

In order to study the effect of seed soaking with biogas slurry on seed germination and growth of faba beans (Vicia faba L.), the experiment was conducted. The seeds were soaked in biogas slurry for various soaking durations (0, 2, 4, 6 and 8 hours) and different concentration (0, 25, 50, 75 and 100 %) along with control to determine the optimal soaking duration and find out the best growing condition. The highest germination rate, germination potential and germination index were obtained when the faba beans seeds soaked for 4 hours in 75 % biogas slurry. Seedling growth was recorded in plants where seeds soaked for 6 hours in 75 % biogas slurry. It was concluded that the seed soaking of biogas slurry with lower concentration (25, 50 and 75 %) showed best results regarding maximum germination and enhanced growth. However, under the higher concentration (100 %) conditions of biogas slurry had a tendency of decrease on seed germination and seedling growth.

Sodium chloride effects on lipase activity in germinating rape seeds

2000 ◽  
Vol 28 (6) ◽  
pp. 899-902 ◽  
Author(s):  
D. D. Ben Miled ◽  
M. Zarrouk ◽  
A. Chérif
Keyword(s):  
Sodium Chloride ◽  
Brassica Napus ◽  
Seed Germination ◽  
Seedling Growth ◽  
Lipase Activity ◽  
High Salt ◽  
Salt Treatment ◽  
Brassica Napus L ◽  
Germination And Growth ◽  
Radicle Length

Seeds of rape (Brassica napus L.) were germinated at various NaCl concentrations up to 200 mM. Germinating levels, seedling growth, triacylglycerol mobilization and lipase activity were investigated. High salt concentrations resulted in retardation of seed germination. Seedling growth as measured by radicle length was severely reduced by NaCl doses higher than 50 mM. Moreover, the mobilization of storage oil in control rapeseed seedlings, started about 24 h after imbibition. As for germination and growth, elevated salt concentrations are found to delay triacylglycerol degradation. Experiments using triolein as substrate indicated clearly that lipase activity was inhibited by salt treatment.

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