scholarly journals Effects of Different Pretreatments to the Seed on Seedling Emergence and Growth ofAcacia polyacantha

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Edward Missanjo ◽  
Alfred Chioza ◽  
Chikondi Kulapani
Keyword(s):  
Seedling Growth ◽  
Tree Species ◽  
Cold Water ◽  
Seedling Emergence ◽  
Positive Influence ◽  
Hot Water ◽  
Seed Treatments ◽  
Growth And Survival ◽  
Survival Percentage ◽  
Acacia Polyacantha

Acacia polyacanthaWilld. is a multipurpose tree species prioritised as one of the agroforestry tree species in Malawi. However, its use in agroforestry practices is limited by the low seedling growth and survival at the nursery stage. A study was conducted to evaluate the seedling growth and survival ofAcacia polyacanthaas affected by different pretreatments on the seeds at Malawi College of Forestry and Wildlife nursery, Malawi. Seeds were subjected to five presowing seed treatments methods, namely, immersion in cold water at room temperature for 24 hours, immersion in hot water (100°C) for 5 minutes, immersion in concentrated sulfuric acid (0.3 M H2SO4) for 20 minutes, scarification by mechanically nicking using secateurs, and a control where seeds were sown without any treatment. The results indicate that presowing seed treatments have positive influence on the seedling growth and survival percentage. Nicked seeds exhibited the highest significant (P<0.001) performance for vegetative characteristics of height, root collar diameter, number of leaves, and survival percentage compared to other pretreatments. Therefore, it is suggested to use nicking as a pretreatment method onAcacia polyacanthaseeds in order to enhance the speed and the amount of early seedling growth at the nursery stage.

scholarly journals Introduction of native tree species into degraded Cerrado vegetation

Interação ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 61-84
Author(s):  
Gildomar Alves dos Santos ◽  
David Francis Robert Philip Burslem ◽  
Milton Serpa de Meira Jr ◽  
Stanislau Parreira Cardozo
Keyword(s):  
Seedling Growth ◽  
Tree Species ◽  
Agricultural Land ◽  
Forest Recovery ◽  
Seedling Mortality ◽  
Basal Diameter ◽  
Growth And Survival ◽  
Cerrado Vegetation ◽  
Native Tree ◽  
Native Tree Species

Experimental restoration using tree seedlings is a common strategy for accelerating succession on degraded post-agricultural land formerly occupied by Cerrado vegetation. Seedling growth in degraded tropical lands is constrained by various factors. The goal of this study was to evaluate the seedling growth and survival of seven native tree species used to accelerate forest recovery in a gully area with stressful environmental conditions. The experimental design involved fenced and unfenced blocks, presence and absence of fertilization and use of an adhesive to prevent ant herbivory (four treatments with four replicates). Seedlings were planted in December 2006 and collection of data on seedling basal diameter, height, mortality and herbivory started on January 24th 2007 and continued every three months, until final data collection on January 31st 2009 (9 measurement dates). Overall seedling survival was 38 % and protecting seedlings did not influence growth, but seedlings grew faster in response to the addition of fertilizer containing N, P and K. The use of the adhesive Tanglefoot to exclude leaf cutter ants had no influence on growth. Fencing reduced seedling mortality, but combining fencing with Tanglefoot did not. Nutrient availability limits seedling growth and survival in the gully. Direct planting of seedlings of native trees may accelerate succession in degraded Cerrado lands subject to interventions that overcome constraints on seedling growth and survival.

scholarly journals Effect of pre-sowing treatments and growing media on seed germination and seedling growth of Albizia lebbeck (L.) Benth

2018 ◽  
Vol 10 (3) ◽  
pp. 860-863
Author(s):  
Naresh Kumar ◽  
A. K. Handa ◽  
Inder Dev ◽  
Asha Ram ◽  
A. R. Uthappa ◽  
...  
Keyword(s):  
Seedling Growth ◽  
Room Temperature ◽  
Cold Water ◽  
Hot Water ◽  
Albizia Lebbeck ◽  
Physical Dormancy ◽  
Growing Media ◽  
Hard Seed ◽  
Collar Diameter ◽  
Hard Seed Coat

The seeds of Albizia lebbeck have been observed to exhibit physical dormancy due to presence of hard seed-coat. To overcome this problem, the seeds were subjected to seven pre-sowing treatments viz., T1-immersion of seeds in cold water for 12 h; T2-immersion of seeds in cold water for 24 h; T3-immersion of seeds in hot water (100 °C) and subsequent cooling at room temperature for 12 h; T4-immersion of seeds in hot water (100 °C) and subsequent cooling at room temperature for 24 h; T5-immersion of seeds in cold water for 12 h followed by immersion in hot water (100 °C) and allowed to cool for 1 h; T6-immersion of seeds in cold water for 24 h followed by immersion in hot water (100 °C) and allowed to cool for 1 h. Untreated seeds served as control (T0). Treatment T3 gave highest germination (96%) which was comparable with T5 (95 %), T4 (94 %) and T6 (93%). Nine growing media viz., T1: soil,  T2: soil+sand (2:1), T3: soil+perlite (2:1), T4: soil+Farm Yard Manure (FYM) (2:1), T5: soil+vermicompost (2:1), T6: soil+sand+FYM (1:1:1), T7: soil+sand+vermicompost (1:1:1), T8: soil+perlite+FYM (1:1:1) and T9: soil+perlite+ vermicompost (1:1:1) were, also, studied for their effect on seedling growth of A. lebbeck. Among these media, maximum values of shoot length (23.82 cm), root length (21.14 cm), collar diameter (3.59 mm) and seedling quality index (0.350) were observed in T7.

scholarly journals Germination Behavior of Rauvolfia serpentine (L.) Seeds with the use of Different Seed Treatments

2021 ◽  
Author(s):  
Amit Kumar Tiwari ◽  
Prawal P.S. Verma ◽  
Dipender Kumar ◽  
Sonveer Singh ◽  
Rakesh Kumar ◽  
...  
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Seed Treatment ◽  
Inhibitory Effect ◽  
Germination Percentage ◽  
Hot Water ◽  
Cotton Cloth ◽  
Cow Dung ◽  
Seed Treatments ◽  
Seed Propagation

Background: Sarpagandha is an indigenous medicinal herb of Indian continent. It has many medicinal properties. Due to increasing demand of Sarpagandha, its exploitation is increasing continuously but for lack of cultivation, this plant has been listed in endangered category. Commercially, it is propagated through seeds but the main barrier of seed propagation is its irregular and low germination. Hence, the current study was undertaken to study the effect of growing media and seed treatment methods on seed germination and seedling growth of Sarpagandha to eliminate the inhibitory effect of the hard stony endocarp.Methods: Seed germination and seedling growth experiments of Sarpagandha were carried out with following different seed treatments, T1 (Control), T2 (Water soaking for 24 hours), T3 (water soaking for 48 hours), T4 (Water soaking for 24 hours + cotton cloth wrapping for 24 hours), T5 (GA3 200 ppm), T6 (FYM treatment for 24 hours), T7 (FYM treatment for 48 hours), T8 (Hot water treatment) and T9 (Cow dung treatment for 24 hours). Experiment was laid out in CRD. The data recorded on the various parameters were analyzed at 5% level of significance by using ANOVA.Result: Results indicated highest germination percentage (51), lowest mortality percent (49), minimum days for initiation of germination (23), minimum days taken for germination completion (33), highest speed of germination (3.77), maximum vigour index (1441.44), highest root (11.27 cm) and highest shoot length (17 cm) in T5 (GA3 200 ppm) followed by T3 (water soaking for 48 hours). Indicating, T5 (GA3 200 ppm) to be best seed treatment for higher germination and subsequent seedling growth of Sarpagandha (Rauvolfia serpentine L.).

scholarly journals Influence of Cold Water Priming on Spinach Seed Performance

HortScience ◽  
1997 ◽  
Vol 32 (4) ◽  
pp. 600E-600
Author(s):  
Leah E. Willis ◽  
James E. Motes
Keyword(s):  
Initial Temperature ◽  
Cold Water ◽  
Seedling Emergence ◽  
Growth Chamber ◽  
Seed Treatments ◽  
Percent Germination ◽  
H 30

Six experiments were conducted to determine the effect of priming on spinach seed performance. Performance was determined by percent, uniformity, and speed of germination after 10 days. In Expt. 1, performance at 22 °C was improved for primed seeds compared to unprimed seeds and germination was >90% for both primed and unprimed seeds. In Expt. 2 (incubator @ 40 °C for 16 h/30 °C for 8 h), germination was reduced for both seed treatments and primed seeds had more germination, but less uniformity than unprimed seeds. In Expt. 3 (incubator @ 40 °C for 16 h/30 °C for 8 h), initial temperatures were 40 °C for 16 h, 40 °C for 8 h, or 30 °C for 8 h. There was an interaction between priming and initial temperature for percent germination, indicating that only primed seeds varied in response to initial temperature. Priming improved percent germination but reduced uniformity and did not influence speed of germination. In Expt. 4 (growth chamber @ 40 °C for 16 h/30 °C for 8 h), priming significantly improved percent seedling emergence and speed compared to unprimed seeds but did not influence uniformity. In Expt. 5 (growth chamber @ 40 °C for 16 h/30 °C for 8 h) initial temperatures were 40 °C for 16 h, 40 °C for 8 h, or 30 °C for 8 h. Priming significantly improved seedling emergence and speed and did not affect uniformity of emergence. Seedling emergence was significantly improved for seeds planted at an initial temperature of 40 °C compared to 30 °C.

Fourteen Threatened Native Trees of Bangladesh: Which Pretreatment Generates Maximum Germination Percent?

2015 ◽  
Vol 22 (2) ◽  
pp. 83-86
Author(s):  
G.N. Hasnat ◽  
M. Hossain ◽  
M. Bhuiyan ◽  
M. Alam
Keyword(s):  
Tree Species ◽  
Cold Water ◽  
Germination Rate ◽  
Hot Water ◽  
Species Response ◽  
Native Trees ◽  
Native Tree ◽  
Speed Up ◽  
Native Tree Species ◽  
Castanopsis Indica

Effect of different pre-sowing treatments on germination of fourteen threatened native tree species of Bangladesh was studied to find out the appropriate pre-sowing treatments to speed up germination rate of the required and desired species. Hard coated fruits and seeds of Canarium resiniferum, Castanopsis indica, Protium serratum, Quercus acuminata and Vitex peduncularis were treated with sand paper, nicking, cold water, hot water, H2SO4 and HCl. Seeds of Brownlowia elata, Dichopsis polyantha, Firmiana colorata, Lophopetalum fimbriatum, Pterospermum acerifolium, Pterospermum semisagittatum, Pterygota alata and Sterculia villosa were sown in polybags, propagator house and nursery bed in normal, flat and in 450 angle position. Hard fruits of Castanopsis indica sown in polybags without any treatment showed 25% germination but increased to 67% when fruits were treated with sand paper rubbing at the distal end. Seeds of Lophopetalum fimbriatum germinated only 26% when sown normally in polybags but when sown in propagator house it increased to 90%. Different species response differently with pre-sowing treatments but in general pre-sowing treatments increases the germination percent in all the species.

scholarly journals Effect of Seed Size and Pretreatment Methods on Germination of Albizia lebbeck

ISRN Botany ◽  
2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
Edward Missanjo ◽  
Chikumbutso Maya ◽  
Dackious Kapira ◽  
Hannah Banda ◽  
Gift Kamanga-Thole
Keyword(s):  
Seed Size ◽  
Tree Species ◽  
Cold Water ◽  
Hot Water ◽  
Albizia Lebbeck ◽  
Hard Seed ◽  
Plant Parts ◽  
Seed Pretreatment ◽  
Multipurpose Tree Species ◽  
And Control

Albizia lebbeck is a multipurpose tree species prioritised for conservation in Malawi. The different plant parts are used in traditional medicine to treat different diseases. However, the seeds are dormant, and the tree species remain undomesticated. A study was conducted to evaluate the effect of seed size and presowing on the germination of Albizia lebbeck in a nursery. Seeds were grouped into four categories in regard to their length, small (≤0.5 cm), medium ( cm), large (≥0.8 cm), and mixture of small, medium, and large seeds. The seeds were subjected to five main seed pretreatment methods, namely, soaking in sulphuric acid for 2 minutes, nicking, soaking in hot water for 5 minutes, soaking in cold water for 24 hours, and control where seeds were sown without any treatment. The results indicate that combination of nicking and large seeds produced the highest (100%) germination. Hot water treatment was effective in large seeds producing 67.5% germination. The increased germination for mechanically scarified seeds through nicking suggests that seed dormancy in Albizia lebbeck is mainly due to its hard seed coat. Therefore, it is recommended to farmers to adopt use of nicking and large seeds, since it is safe and effective.

scholarly journals Lianas suppress seedling growth and survival of 14 tree species in a Panamanian tropical forest

Ecology ◽  
2016 ◽  
Vol 97 (1) ◽  
pp. 215-224 ◽  
Author(s):  
Laura Martínez-Izquierdo ◽  
María M. García ◽  
Jennifer S. Powers ◽  
Stefan A. Schnitzer
Keyword(s):  
Tropical Forest ◽  
Seedling Growth ◽  
Tree Species ◽  
Growth And Survival

scholarly journals Pre-germination Seed Treatments and Stratification Affect Germination of Montezuma Cypress

2007 ◽  
Vol 25 (1) ◽  
pp. 1-3 ◽  
Author(s):  
Geoffrey C. Denny ◽  
Michael A. Arnold
Keyword(s):  
Citric Acid ◽  
Tree Species ◽  
Seed Treatment ◽  
Hot Water ◽  
Seed Treatments ◽  
Single Tree ◽  
Cultural Conditions ◽  
Ornamental Tree ◽  
Wide Range ◽  
Plant Hardiness

Abstract Taxodium distichum (L.) Richard var. mexicanum Gordon (syn. T. mucronatum), Montezuma cypress, is a valuable ornamental tree species tolerant of a wide range of cultural conditions. However, little is know about the propagation requirements of this species. The objectives of this study were 1) to determine the effect of previously recommended seed treatments for baldcypress (T. distichum (L.) Richard var. distichum) or pondcypress (T. distichum (L.) Richard var. imbricarium (Nutt.) Croom; syn. T. ascendens, T.d. var. nutans) on Montezuma cypress seeds, and 2) to determine the effects of stratification in combination with pre-germination treatments on germination of Montezuma cypress seeds. Open pollinated seeds were collected from a single tree in Southmost, TX (25° 52.576’ N, 97° 27 .083’ W, elevation 4.5 m, USDA Plant Hardiness Zone 9b). Seven pre-germination treatments and three stratification periods were applied to the seeds. If immediate germination of ripe seed is desired, then the best treatments are the citric acid soak and the hot water baths, however, if seeds can be stratified, then no pre-germination seed treatment is needed. Citric acid scarification and hot water baths produced the best germination. Stratification hastened germination rates and cumulative mean germination percentages. Stratification for 45 d appears to be sufficient, although for the best pre-germination treatments stratification requirements were less pronounced.

Sign in / Sign up

Export Citation Format

Share Document