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Registros recuperados: 14
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An analysis of the physical and germination parameters of the sweet Chestnut (Castanea sativa) Ciencia e Investigación Agraria
Benedetti,Susana; González,Marta; García,Edison; Quiroz,Iván.
This study analyzed the physical characteristics, number of seeds per kilogram, seed weight, germination characteristics, germination percentage, germination energy, germination period and the germination vigor of sweet chestnut seeds from two forest plantations in the Los Ríos region of Chile. No significant differences were found in any of the characteristics related to the collection zone. Following the international classification systems for seeds of this species, the values of the physical characteristics allow us to classify these seeds as a small caliber or "chestnut". The values of the germination characteristics (>80%) demonstrate a good germination for chestnut seeds of forest origin.
Tipo: Journal article Palavras-chave: Energy period; Germination energy; Germination percentage; Germination vigor; Number of seeds per kilogram; Seed weight.
Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000100015
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Cereus jamacaru seed germination and initial seedling establishment as a function of light and temperature conditions Scientia Agricola
Alencar,Nara Lídia Mendes; Gomes-Filho,Enéas; Innecco,Renato.
Cereus jamacaru is a widespread Cactaceae of northeast Brazil, largely used as cattle food, and as ornamental and medicinal plant. Despite its distinguished importance, until now, there has been little information about the physiological aspects involved on its germination. The objective of this study was to evaluate the effect of light and temperature interaction on the seed germination and seedling establishment of this plant. The evaluated variables were germination percentage at 7 (% G7) and at 14 days after imbibition (% G14), germination average time index (GSI), germination average time (GAT), germination accumulated frequency (GAF), seedling dry mass and height. The highest % G14 and GSI were at 25 ºC in white light, whereas the highest GAT values...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cactus seed; Germination percentage; Mandacaru; Photoblastism.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162012000100010
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Disturbance as a factor in breaking dormancy and enhancing invasiveness of African grasses in a Neotropical Savanna Acta Botanica
Gorgone-Barbosa,Elizabeth; Pivello,Vânia R.; Baeza,M. Jaime; Fidelis,Alessandra.
The Cerrado is threatened by wildfires and invasive species. We aimed to evaluate in laboratory conditions whether temperature fluctuation at the soil surface, resulting from the absence of vegetation due to fire, can affect the germination of Urochloa decumbens and U. brizantha, two invasive African grasses. Seeds of both species were submitted to simulations: 1) temperature during fire at 1cm belowground (F); 2) temperature fluctuation at 1cm belowground without vegetation cover for a month (TF); 3) (F) + (TF); 4) control at 25ºC. After treatments, seeds were put to germinate at 25ºC for 40 days. We had four replicates per treatment and three temporal replicates. We compared germination percentage and the mean germination time among treatments using...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cerrado; Fire; Germination percentage; Invasive species; Physiological dormancy; Seed dormancy; Temperature fluctuation; Urochloa brizantha; Urochloa decumbens.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000100131
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Jussara palm seed germination under different shade levels Horticultura Brasileira
Tavares,Armando R; Ramos,Danilo P; Aguiar,Francismar Francisco A; Kanashiro,Shoey.
Jussara palm (Euterpe edulis) is a native plant of the Atlantic rainy forest, with large economic interest. The species is shade-tolerant and currently it is restricted to certain areas of difficult access. The most effective way to reintroduce it into the environment or increase the population density for conservation and commercial exploitation is promoting seed propagation. Considering that the jussara palm is an ombrophylous species, this experiment aimed to simulate forest conditions, with different shade levels, to analyze its influence on seed germination. After processing the seeds (depulping), 500 seeds were sown in containers (20 x 30 x 8 cm) filled with forest ground and grown in five shade levels (0, 20, 40,60, and 80%, simulated using black...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Euterpe edulis; Arecaceae; Emergence speed index; Germination percentage.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362008000400013
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Lluvia de semillas y emergencia de plántulas de Pinus patula Schl. et Cham. en Zacualtipán, Hidalgo. Colegio de Postgraduados
Castillo Aguilar, Ofelia.
La presente investigación es un aporte para entender el comportamiento de la repoblación de Pinus patula Schl. et Cham. en el ejido La Mojonera, Zacualtipán, Hidalgo. Se eligieron dos sitios de una hectárea cada uno. En el primero se aplicó el método de árboles padres (SCM), mientras que el segundo se mantuvo en condición natural (SSM). Para estimar la lluvia de semillas, emergencia y supervivencia de plántulas, así como el número de semillas viables almacenadas en el reservorio del suelo, cada sitio se dividió en 100 cuadros de 10 x 10 m. De manera aleatoria se instalaron 40 trampas circulares de 0.5 m2 cada una, rectángulos de 2m2 y se extrajeron muestras de 3 cm de profundidad en 40 cuadros de 0.5 m2 cada uno para ambos sitios. Estas muestras se...
Palavras-chave: Dispersión; Repoblación; Arboles padres; Supervivencia; Causas de mortalidad; Semilla viable; Porcentaje de germinación; Sitios con y sin manejo; Dispersion; Regeneration; Parent trees; Survival; Mortality causes; Viable seed; Germination percentage; Sites with and without management; Forestal; Maestría.
Ano: 2013 URL: http://hdl.handle.net/10521/1951
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To resist or to germinate? The effect of fire on legume seeds in Brazilian subtropical grasslands Acta Botanica
Fidelis,Alessandra; Daibes,Luís Felipe; Martins,Aline Redondo.
Fire plays an important role in several grassland ecosystems in the world. Fire can trigger germination in several species, by breaking the physical dormancy of their seeds. Thus, we hypothesized that exposure to high temperatures during fire would break seed dormancy and enhance germination. We tested the effect of high temperatures on the germination of six species of legumes from Brazilian subtropical grasslands. We used heat shock experiments with the following treatments: 60, 90, 120 and 150ºC for one minute. Seeds were then placed to germinate for 60 days in 12/12 hours light/dark and 20/30ºC. Germination was generally low for all study species. Most species was not affected by heat shock treatments. However, Stylosanthes montevidensis was the only...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Brazilian Campos grasslands; Fabaceae; Fire-resistance; Germination percentage; Heat shock experiments.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000100147
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การตรวจสอบความแข็งแรงของเมล็ดพันธุ์พริกหวานที่ผ่านการกระตุ้นการงอก โดยวิธีการเร่งอายุ Thai Agricultural
Boonmee Siri; Orranut Diumkhunthod; Potjana Srikaow.
The objective of this experiment was to investigate effect of accelerated aging after sweet pepper seeds were primed with two types of chemical solutions. The experiment was conducted at Seed Technology Laboratory Section in Seed Processing Plant, Faculty of Agriculture, Khon Kaen University. The sweet pepper seeds were soaked in two types of solutions: 1) 2.5%Chitosan 2) 2%KNO3 at 15oC for 5 hours. Primed seeds were subsequently subjected to accelerated aging at 42oC with relative humidity 100% for 10 days. The effects of seed priming on seed quality were determined after priming. The results showed that the primed seeds had seed germination percentage and speed of germination higher than non-primed seeds. It also showed that it had seed vigor more than...
Tipo: PhysicalObject Palavras-chave: Sweet pepper seed; Seed priming; Seed enhancement; Accelerate aging; Seed technology; Seed quality; Germination percentage; Seed vigour; Pregermination; Seed osmopriming; Seed treatment; เมล็ดพันธุ์พริกหวาน; การเตรียมการงอก; คุณภาพเมล็ดพันธุ์; การเร่งอายุเมล็ดพันธุ์; การกระตุ้นการงอก; การตรวจสอบความแข็งแรง; อัตราการงอกของเมล็ด; ความแข็งแรงของเมล็ด; การปรับสภาพก่อนเมล็ดงอก; ซีดออสโมพรามมิ่ง; ซีดทรีทเมนท์.
Ano: 2013 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5729
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การเคลือบเมล็ดพันธุ์ด้วยเพอลิเมอร์ร่วมกับ Rhodamine-B ต่อการเรืองแสงและคุณภาพเมล็ดพันธุ์มะเขือเทศลูกผสม Thai Agricultural
Chanoknet Chaiwicha; Boonmee Siri.
The objective of this experiment was to create identical seed by coating with fluorescent compounds. The experiment was conducted at Seed Technology Section of Seed Processing Plant, Faculty of Agriculture, Khon Kaen University. The coating formulations were prepared using 1.5 % Hydroxypropyl Methylcellulose (HPMC) of fluorescent Rhodamine-B at the rates of 0.2, 0.4, 0.6, and 0.8 gram.The tomato seeds were coated by Centri Seed Coater (Model SKK 10). Coated seeds were subsequently divided into two parts. The first part; was used to detect fluorescence performance by hand-UV (Model UVGL-58; λ=365 nm.). The second part was used to evaluate the seed quality after coating and after accelerated aging with 100% relative humidity at 42oC for 74hours. It was found...
Tipo: PhysicalObject Palavras-chave: Tomato seeds; Seed coating; Polymer; Rhodamine; Fluorescent compounds; Anti-counterfeiting technology; Seed technology; Seed quality; Label seeds; Germination percentage; Seed vigour; เมล็ดพันธุ์มะเขือเทศ; การเคลือบเมล็ดพันธุ์; สารพอลิเมอร์; สารเรืองแสง; การปลอมปนเมล็ดพันธุ์; เทคโนโลยีทางเมล็ดพันธุ์; คุณภาพเมล็ดพันธุ์; เอกลักษณ์เมล็ดพันธุ์; อัตราการงอกของเมล็ดพันธุ์; ความแข็งแรงของเมล็ดพันธุ์.
Ano: 2014 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5722
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การเปรียบเทียบชนิดของพอลิเมอร์ต่อการเคลือบเมล็ดพันธุ์มะเขือเทศลูกผสม Thai Agricultural
Kittiwan Klarod; Boonmee Siri.
A study of different type and proportion of polymers were investigated on tomato seed quality. This experiment was conducted at seed technology laboratory, Seed Processing Plant, Faculty of Agriculture, Khon Kaen University. Using three polymers type polyvinyl pyrrolidone (PVP-K30), polyvinyl pyrrolidone (PVP-K90) and polyvinyl alcohol (PVA). This experiment consisted of 2 parts. The first part of experiment was to study effect of type and proportion of polymers as a film former on viscosity, dissolution of film-sheet. The second part, study the effect of seed coating substances on tomato seed quality. Seven treatments were compared: uncoated seed, seed coating with PVP-K30, PVP-K90 and PVA. The tomato seeds were coated by centri seed coater model SKK 10....
Tipo: PhysicalObject Palavras-chave: Tomato seeds; Seed coating; Polymer; Hybrid tomato seed; Seed enhancement; Seed coating method; Seed technology; Seed quality; Intermediate technology; Germination percentage; Seed vigour; เมล็ดพันธุ์มะเขือเทศ; การเคลือบเมล็ดพันธุ์; สารพอลิเมอร์; สารเคลือบ; พันธุ์ลูกผสม; เทคโนโลยีทางเมล็ดพันธุ์; การยกระดับคุณภาพเมล็ดพันธุ์; อัตราการงอกของเมล็ดพันธุ์; ความแข็งแรงของเมล็ดพันธุ์.
Ano: 2014 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5723
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ผลของการทำ Osmopriming ด้วยสารเคมีต่างกันต่อการเปลี่ยนแปลงคุณภาพเมล็ดพันธุ์มะเขือเทศลูกผสม Thai Agricultural
Boonmee Siri; Orranut Diumkhunthod.
The objective of this study was to investigatethe effects of osmopriming method with different chemicals on changes in quality of hybrid tomato seeds. The experiment was conducted at the Seed Quality Testing Laboratory Seed Processing Plant, Faculty of Agriculture, KhonKaen University. The tomato seeds were soaked in water plus PEG 6000 (-1.5 MPa) in combination with KNO3 (1% and 2%), KH2PO4 (1% and 2%) and vitamin C (1% and 2%) at 15°C for 5 days. After priming process, seed moisture content was subsequently reduced to their initial by therotating modified air seed dryer machine (Model KKU 40-2). Then, seed quality of primed seeds was tested quality. The results showed that primed seeds with PEG 6000 (-1.5 MPa)with vitamin C 2% had the highest germination...
Tipo: PhysicalObject Palavras-chave: Tomato seed; Hybrid varieties; Seed priming; Seed enhancement; Accelerate aging; Seed quality; Germination percentage; Seed vigour; Osmopriming; Chemical; PEG 6000; Polyethylene glycol; Potassium nitrate; KNO3; Potassium dihydrogen phosphate; KH2PO4; Vitamin c; เมล็ดพันธุ์มะเขือเทศ; พันธุ์ลูกผสม; การเตรียมงอก; สารเคมี; การแช่เมล็ด; การเร่งอายุเมล็ดพันธุ์; การกระตุ้นการงอก; คุณภาพเมล็ดพันธุ์; อัตราการงอกของเมล็ด; ความแข็งแรงของเมล็ด.
Ano: 2013 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5730
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ผลของการพอกเมล็ดด้วย Pumice zeolite และ bentonite ต่อคุณภาพของเมล็ดพันธุ์ยาสูบพันธุ์เวอร์จิเนีย Thai Agricultural
Jakkrapong Kangsopa; Boonmee Siri.
Tobacco seeds are very small in seed size, causing non-uniformseedlings development, vunerable to disease infection, as a result requires higher seeding rate. This research aims to study effect of material filler on tobacco seed quality. The experiment was conducted at laboratory of seed quality testing section, Seed Processing Plant, Faculty of Agriculture, Khon Kaen University. The Virginia tobacco seeds were pelleted with three types of fillers including pumice zeolite and bentonite. The binder material used wasis hydroxyl propyl methylcellulose (HPMC) with concentration of 4 percent by weight. The result showed that the seed pelleting with pumice. Solubility in water is best when compared with other types of material fillers. Furthermore it’s the...
Tipo: PhysicalObject Palavras-chave: Tobacco seed; Virginia variety; Seed pelleting; Adhesive materials; Pumice zeolite; Bentonite; Filler materials; Hydroxyl propyl methylcellulose; HPMC; Aging seed; Seed vigour; Germination percentage; เมล็ดพันธุ์ยาสูบ; พันธุ์เวอร์จิเนียร์; การพอกเมล็ดพันธุ์; วัสดุพอก; วัสดุประสาน; การเร่งอายุเมล็ดพันธุ์; อัตราการงอกของเมล็ด; ความแข็งแรงของเมล็ด.
Ano: 2013 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5728
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ผลของการพอกเมล็ดพันธุ์ร่วมกับฮอร์โมน Gibberellin และ indole-3-butyric acid ต่อคุณภาพเมล็ดพันธุ์ยาสูบพันธุ์เวอร์จิเนียร์ Thai Agricultural
Boonmee Siri; Suriya Trachoo.
Tobacco seeds are very small. This causes difficulty in sowing and resulted in uneven seelings.This experiment aimed to study types and concentrations of hormones for proportion of pelleting tobacco seeds. The experiment was conducted at laboratory of seed quality testing section, Seed Processing Plant, Faculty of Agriculture, Khon Kaen University. The Virginia tobacco seeds were pelleted with pumice, fillers material at the rate 150 g and used hydroxypropyl methylcellulose (HPMC) with concentrations 4 percent by weight as binder material. Two types of hormones, Gibberellin (GA) and Indoie-3-butyric acid (IBA) with four different rates 1, 2, 3, and 4 ml per 3 g of tobacco seeds were used. The tobacco seeds were pelleted by pellet-machine model SKK10. The...
Tipo: PhysicalObject Palavras-chave: Tobacco seed; Virginia variety; Seed pelleting; Adhesive materials; Gibberellin; Indole-3-butyric acid; GA; IBA; Hormones; Filler materials; Aging seed; Germination percentage; Seed vigour; เมล็ดพันธุ์ยาสูบ; พันธุ์เวอร์จิเนียร์; การพอกเมล็ดพันธุ์; ฮอร์โมน; จิบเบอเรลลิน; ออกซิน; วัสดุประสาน; การเร่งอายุเมล็ดพันธุ์; อัตราการงอกของเมล็ดพันธุ์; ความแข็งแรงของเมล็ดพันธุ์.
Ano: 2014 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5726
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ผลของการเร่งอายุที่มีต่อคุณภาพเมล็ดพันธุ์และการรั่วไหลของสารอิเล็กโทรไลท์ในเมล็ดพันธุ์แตงกวาลูกผสม Thai Agricultural
Chinanat Krainart; Kanit Vichitphan; Boonmee Siri.
The experimental study design was used to examine the effects of accelerated aging on deterioration of seed quality and electrolyte leakage of cucumber seeds. The original cucumber seeds had 99 germination percentage. The cucumber seeds were taken to accelerated aging process; in aging chamber with constant temperature 450C and 100% of relative humidity for 0-21 days. The seeds were taken every three days for 3, 6, 9, 12, 15, 18, and 21 days and tested of seed quality. After that, the seeds were divided into 2 lots. The first lot was examined for conductivity values and measured K+, Ca2+, Na+, and Mg2+ leakage. The second lot was examined seed quality under laboratory and green-house conditions. Additionally, The results were shown that after 6th days of...
Tipo: PhysicalObject Palavras-chave: Cucumber seed; Hybrid cucumber seed; Seed preservation; Seed deterioration; Electrolyte leakage; Accelerate aging; Seed technology; Seed quality; Seed enhancement; Germination percentage; Seed vigour; เมล็ดพันธุ์แตงกวา; พันธุ์ลูกผสม; การเก็บรักษาเมล็ดพันธุ์; การเสื่อมคุณภาพของเมล็ด; สารอิเล็กโทรไลท์; เทคโนโลยีทางเมล็ดพันธุ์; คุณภาพเมล็ดพันธุ์; การเร่งอายุเมล็ดพันธุ์; อัตราการงอกของเมล็ดพันธุ์; ความแข็งแรงของเมล็ดพันธุ์.
Ano: 2014 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5724
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ผลของสารพอกและวัสดุประสานต่างชนิดกัน ต่อคุณภาพเมล็ดพันธุ์ข้าวโพดไร่ขนาดเล็ก Thai Agricultural
Nongnuch Saenghin; Boonmee Siri.
In commercial corn production, small seed size is discarded from the seed lot and used as the animal feed, resulting in less profit to the seed industry. Therefore, the objective of this research was to increase seed size by seed pelleting methods. In this study, the types of filler pelleting materials and ratio of binder materials were investigated. The experiment was conducted at Seed Quality Test Laboratory of Seed Processing Plant, Faculty of Agriculture, Khon Kaen University. Small seed size of hybrid corn that retained on grade 14/64” diameter sieve perforations were pelleted with seven different types and ratios of fillers (vermiculite, bentonite, pumice, calcium sulphate, calcium carbonate, charcoal and coconut) with four different types of binders...
Tipo: PhysicalObject Palavras-chave: Corn seed; Seed pelleting; Vermiculite; Bentonite; Pumice; Calcium sulphate; Calcium carbonate; Charcoal; Coconut; Binde; Hydroxypropyl methylcellulose; HPMC; Gum arabic; Carboxymethyl cellulose; CMC power; Methyl cellulose; Seed size; Seed quality; Seed enhancement; Germination percentage; Seed vigour; เมล็ดพันธุ์ข้าวโพด; การพอกเมล็ดพันธุ์; สารพอก; วัสดุประสาน; เทคโนโลยีเมล็ดพันธุ์; การยกระดับคุณภาพเมล็ดพันธุ์; อัตราการงอกของเมล็ด; ความแข็งแรงของเมล็ด.
Ano: 2013 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5727
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