Jatropha curcas seed tolerance to desiccation and storage at low temperatures

Jatropha seeds were classified according to tolerance to desiccation and storage, as a way to subsidize future propagation programs, as jatropha seed shows to be a promising oilseed for biodiesel production. The objective of this work was to study the physiological classification regarding the tolerance of physic nut seeds to desiccation and storage at low temperatures and to verify if their behavior was closer to that of seeds classified as orthodox, recalcitrant or intermediate. The seeds were harvested in the morning and sent to the Laboratory, being processed and submitted to drying, storage and emergency assessment. For seed quality analysis, the germination test and the emergence speed index were used, using a completely randomized design, with four treatments (no drying, 12% humidity, 5% humidity and 12% humidity a -20ºC for 90 days) and five repetitions. After physiological classification, it was found that seeds of physic nut are orthodox, thus can be stored at low temperature (-20ºC) and with low water content (<5%), without compromising their viability.

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Multispectral and X-ray Images for Characterization of Jatropha Curcas L. Seed Quality

10.21203/rs.3.rs-28449/v1 ◽

2020 ◽

Author(s):

Vitor J Bianchini ◽

Gabriel M Mascarin ◽

Lúcia CAS Silva ◽

Valter Arthur ◽

Jean M Carstensen ◽

...

Keyword(s):

Jatropha Curcas ◽

Multispectral Imaging ◽

Seed Quality ◽

Strong Relationship ◽

Biodiesel Production ◽

Alternative Methods ◽

Quality Analysis ◽

X Ray ◽

Jatropha Seed

Abstract Background: Jatropha curcas is an oilseed plant with great potential for biodiesel production. In agricultural industry, the seed quality is still estimated by manual inspection, using destructive, time-consuming and subjective tests that depend on the seed analyst experience. Recent advances in machine vision combined with artificial intelligence algorithms can provide spatial and spectral information for characterization of biological images, reducing subjectivity and optimizing the analysis process.Results: We present a new method for automatic characterization of jatropha seed quality, based on multispectral imaging (MSI) combined with X-ray imaging. We propose an approach along with X-ray images in order to investigate internal problems such as damages in the embryonic axis and endosperm, considering the fact that seed surface profiles can be negatively affected, but without reaching important internal regions of the seeds. Our studies included the application of a normalized canonical discriminant analyses (nCDA) algorithm as a supervised transformation building method to classify spatial and spectral patters according to the classes of seed quality. Spectral reflectance signatures in a range of 780 to 970 nm and the X-ray images can efficiently predict quality traits such as normal seedlings, abnormal seedlings and dead seeds.Conclusions: MSI and X-ray images have a strong relationship with physiological performance of Jatropha curcas L. These techniques can be alternative methods for rapid, efficient, sustainable and non-destructive characterization of jatropha seed quality in the future, overcoming the intrinsic subjectivity of the conventional seed quality analysis.

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POTENSI BIJI JARAK PAGAR SEBAGAI RODENTISIDA ALAMI

Jurnal Ilmu-Ilmu Pertanian Indonesia ◽

10.31186/jipi.23.2.98-105 ◽

2021 ◽

Vol 23 (2) ◽

pp. 98-105

Author(s):

Edo Legianto Pratama ◽

Tuti Heiriyani ◽

Riza Adrianoor Saputra

Keyword(s):

Mus Musculus ◽

Fish Meal ◽

Rice Flour ◽

Time Of Death ◽

Average Decrease ◽

Randomized Design ◽

Two Factors ◽

Completely Randomized Design ◽

Jatropha Seeds ◽

Jatropha Seed

[JATROPHA SEED POTENTIAL AS A NATURAL RODENTICIDE]. The controlling of rat's pest attacks often use chemical control that adversely affects non-target animals and leaves a residue for the environment. One of the recommended controls is to use natural rodenticides derived from jatropha seeds and do not harm non-target animals that are environmentally friendly. This research aims to determine the interaction and the best combination of bait mixed with jatropha seeds on the death of Mus musculus, as well as the type of bait and the best dose of jatropha seeds on the death of Mus musculus. The design in this study used a completely randomized design consisting of two factors, the first factor was the bait and the second factor was the dose of jatropha seeds. The results showed that there was an interaction between the type of bait and the dose of jatropha seeds on the amount of feed consumed by Mus musculus. The combination of bait type and dose of jatropha seeds that was best for the mortality of Mus musculus was found in the treatment of rice flour with 3.0 g of jatropha seeds, cornflour with 3.0 g of jatropha seeds, and fish meal with 3.0 g of jatropha seeds. The best dose of jatropha seeds in reducing the bodyweight of Mus musculus, accelerating the time of death, and increasing the percentage of death was 3.0 g of jatropha seeds with an average decrease in body weight of Mus musculus reaching 75%, and the fastest death for five days, and able to kill 100% of Mus musculus.

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Physiological, isozyme changes and image analysis of popcorn seeds submitted to low temperatures

Journal of Seed Science ◽

10.1590/2317-1545v39n3169853 ◽

2017 ◽

Vol 39 (3) ◽

pp. 234-243 ◽

Cited By ~ 3

Author(s):

Hugo César Rodrigues Moreira Catão ◽

Franciele Caixeta

Keyword(s):

Low Temperatures ◽

Seed Quality ◽

Dry Mass ◽

Enzyme Expression ◽

Randomized Design ◽

Radicle Protrusion ◽

Negative Effect ◽

Physiological Quality ◽

Completely Randomized Design

Abstract: This present study aimed to assess seed quality of popcorn seedlings subjected to low temperatures by examining their physiological changes, enzymes, and images. We used a completely randomized design with four replications in a factorial arrangement with four hybrids (P618, AP6002, AP8202, AP8203) and five temperatures (10, 13, 16, 19 and 25 °C). Their physiological quality was assessed through radicle protrusion, germination, dry mass of seedlings and emergence. We have assessed the images of seedlings through their hypocotyl and root lengths; and through rates of automatic force, uniformity and growth, provided by Groundeye. The isozyme expressions were determined for the catalase (CAT - IUBMB: EC 1.11.1.6), alcohol dehydrogenase (ADH - IUBMB: EC 1.1.1.1), malate dehydrogenase (MDH - IUBMB: EC: 1.1.1.37) and α-amylase (α-AMY - IUBMB: EC 3.2.1.1). Results show that low temperatures cause a negative effect on seed physiological quality in enzyme expression of CAT, ADH, MDH and α-AMY and on the performance of seedlings. These alterations compromise seed quality. Hybrids AP6002 and AP8203 should be recommended for sowing at up to 16 °C. The Groundeye software was efficient in the analysis of popcorn seedlings and in for the assessment of seed quality when submitted to low temperatures.

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Seed quality of rice cultivars stored in different environments

Journal of Seed Science ◽

10.1590/s2317-15372014000100004 ◽

2014 ◽

Vol 36 (1) ◽

pp. 32-39 ◽

Cited By ~ 3

Author(s):

Elizabeth Rosemeire Marques ◽

Eduardo Fontes Araújo ◽

Roberto Fontes Araújo ◽

Sebastião Martins Filho ◽

Plínio César Soares

Keyword(s):

Seed Quality ◽

Accelerated Aging ◽

Storage Period ◽

Rice Cultivars ◽

Germination Test ◽

Randomized Design ◽

Physiological Quality ◽

Completely Randomized Design ◽

And Storage

The objective of this study was to evaluate dormancy and physiological quality of seeds of rice cultivars during storage in different environments. After harvesting, the seeds of three rice cultivars (Seleta, Curinga and Relâmpago) were dried in the sun, to reach moisture content at around 13%. Then, they were packed in paper and stored in four environments: 5 ± 2 ºC / 70 ± 5% RH, 12 ± 2 ºC / 70 ± 5% RH, 18 ± 2 ºC / 65 ± 5% RH and in uncontrolled condition of temperature and relative humidity (natural). Physiological quality was evaluated at the beginning and at 3, 6, 9 and 12 months of storage by germination test, electrical conductivity, accelerated aging and sand emergence. The experiment was conducted in split plots in a completely randomized design with three replications. Environmental factor was applied in the plots, cultivars in the subplots and storage period in subplots. Cultivar Seleta showed higher dormancy, which was surpassed during storage regardless of environment conservation. In general, seeds stored in natural environment showed lower physiological quality. Only the seeds of cultivar Seleta, regardless of the environment, maintained germination above the minimum required for commercialization until six months of storage.

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Seed quality response of Urochloa humidicola cv. Llanero to drying surfaces and environments1

Pesquisa Agropecuária Tropical ◽

10.1590/1983-40632018v4851396 ◽

2018 ◽

Vol 48 (3) ◽

pp. 306-315

Author(s):

Alan Mario Zuffo ◽

Joacir Mario Zuffo Júnior ◽

Everton Vinicius Zambiazzi ◽

Fábio Steiner

Keyword(s):

Seed Quality ◽

Germination Rate ◽

Seed Storage ◽

Brachiaria Humidicola ◽

Randomized Design ◽

Physiological Quality ◽

Completely Randomized Design ◽

Quality Response ◽

And Storage

ABSTRACT The drying process and storage may interfere in the quality of creeping signalgrass seeds [Urochloa humidicola (Rendle.) Morrone & Zuloago, syn. Brachiaria humidicola (Rendle.) Schweick.]. This study aimed to evaluate the physical, physiological and sanitary quality of creeping signalgrass cv. Llanero seeds submitted to drying surfaces and environments and stored for two periods (1 and 8 months). The experiment was arranged in a completely randomized design, in a 4 × 2 × 2 + 2 factorial arrangement, with four drying surfaces (soil, asphalt, concrete and ceramic floor), two drying environments (seeds exposed to the sun or shade), two seed storage periods (1 and 8 months) and two additional treatments with drying in paper bags under laboratory conditions (control) and stored for 1 or 8 months, with four replicates. The water content, viability by the tetrazolium test, electrical conductivity, germination rate, germination rate index and seed sanitary quality were measured. Drying at full sun impaired the physiological quality of the seeds due to the high temperatures (46.8-51.0 ºC) of the drying surface; however, reduced the incidence of pathogens. The drying of seeds in paper bags under shade results in a higher physiological quality, but the sanitary quality is compromised. However, the pathogens present in the seeds did not inhibit their viability and vigor. The storage for eight months reduces the seed quality.

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Envelope method for the germination test of Mombasa grass

Semina Ciências Agrárias ◽

10.5433/1679-0359.2021v42n3supl1p2041 ◽

2021 ◽

pp. 2041-2048

Author(s):

Tatiane Sanches Jeromini ◽

◽

Murilo Petrassi Botassini ◽

Renato Téo de Barros ◽

Cibele Chalita Martins ◽

...

Keyword(s):

Traditional Method ◽

Seed Quality ◽

Quality Analysis ◽

Germination Test ◽

High Quality ◽

Significant Treatment ◽

Randomized Design ◽

Seed Analysis ◽

Envelope Method ◽

Completely Randomized Design

The Rules for Seed Analysis reports the use of a paper envelope to allow use of the germination test with small seeds but does not provide any method or use recommendation. As Mombasa grass has high quality and commercial importance, the objective of this study was to evaluate the viability of the envelope method in the germination test of Mombasa grass seeds, with the aim of achieving greater result accuracy and improvement of seed quality analysis processes in laboratories. The germination of eight lots of Mombasa grass seeds was evaluated with two sowing methods (on paper and in paper envelope). The moisture content and the first germination count were also determined. The experiment was conducted with a completely randomized design. The data were analyzed in a 2 x 8 factor scheme (sowing methods x lots), with four repetitions. The data were subjected to analysis of variance using the F test and when significant, treatment means were compared using the Tukey’s test at 5% probability. Results showed that the envelope method is efficient for the germination test of Mombasa grass seeds and can be easily used by seed analysis laboratories, as it present results equivalent or superior to those obtained using the traditional method on paper, while occupying only 2/5 of the germination chamber space used in the conventional method.

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Seed quality behavior of Soybean (Glycine max) as influenced bydifferent packaging materials and storage conditions

Legume Research - An International Journal ◽

10.18805/lr.v0i0.7598 ◽

2016 ◽

Author(s):

M. K. Meena ◽

M. B. Chetti ◽

C. M. Nawalagatti

Keyword(s):

Glycine Max ◽

Seed Quality ◽

Storage Conditions ◽

Quality Parameters ◽

High Density ◽

Packaging Materials ◽

Randomized Design ◽

Ambient Storage ◽

Completely Randomized Design ◽

And Storage

A Study was carried out to find out the seed quality behavior of soybean (Glycine max) as influenced by different packaging materials and storage conditions. Soybean seeds were stored in different packaging materials viz., gunny bags, high density polythene bags and vacuum packed bags stored at room temperature (25 ± 2º C) and cold storage (4 ± 1º C) for a period of 18 months. The treatments having six combinations and consisting of different containers viz., gunny bags, high density polythene bags and vacuum packed bags were replicated four times in both cold and ambient storage conditions in completely randomized design. The results of the study revealed that the that the seeds stored in vacuum packed bags maintained the seed quality with least deterioration with respect to all the seed quality parameters compared to seeds stored in gunny bags and high density polythene bags.

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Calla lily inflorescences postharvest: pulsing with different sucrose concentrations and storage conditions

Ciência e Agrotecnologia ◽

10.1590/s1413-70542011000400003 ◽

2011 ◽

Vol 35 (4) ◽

pp. 657-663 ◽

Cited By ~ 2

Author(s):

Elka Fabiana Aparecida Almeida ◽

Patrícia Duarte de Oliveira Paiva ◽

Luiz Carlos de Oliveira Lima ◽

Franklin Cordeiro Silva ◽

Juliana Fonseca ◽

...

Keyword(s):

Sucrose Concentration ◽

Storage Conditions ◽

Prior Treatment ◽

Dry Storage ◽

Calla Lily ◽

Randomized Design ◽

Completely Randomized Design ◽

Pre Treatment ◽

Cold Chamber ◽

And Storage

Calla lily is an appreciated specie used for flower arrangements. In spite of its commercial importance, there is little information on calla lily postharvest conservation. Thus, this study aimed to determine the best sucrose concentration for pulsing and cold storage conditions to extend calla lily postharvest durability. Flower stalks were submitted to a pulsing pre-treatment using 2, 4, 8, 12 and 16% sucrose in the solution, for one hour, plus a treatment with direct storage in cold chamber (4ºC), without a prior-treatment. Dry storage or storage in solution with the commercial product Flower® was also tested. A completely randomized design was used with four replicates and three inflorescences per plot. Spathe length and width were daily measured from which the opening and wilting processes were analyzed. It was observed that pulsing with sucrose was efficient in extending calla lily inflorescences opening process and durability. Dry storage for short periods (less than six days) can also be used, but a prior-treatment with 12% sucrose pulsing for one hour or with a water supply for the same period was required. For storage in solution, a pulsing with 5% or 7.5% sucrose was recommended.

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Effects of 1-MCP on External Postharvest Qualities and Shelf Life of ‘Maha Chanok’ Mango Fruit

Journal of Agricultural Science ◽

10.5539/jas.v8n1p68 ◽

2015 ◽

Vol 8 (1) ◽

pp. 68

Author(s):

B. Chutichudet ◽

Prasit Chutichudet ◽

Usana Trainoak

Keyword(s):

Chlorophyll Content ◽

Fruit Weight ◽

Storage Life ◽

Fruit Firmness ◽

Mango Fruit ◽

Chlorophyll Contents ◽

Randomized Design ◽

Fruit Decay ◽

Completely Randomized Design ◽

And Storage

‘Maha Chanok’ mango is an economic fruit crop widely cultivated commercially throughout Thailand. By nature, mango fruit has a rather limited storage life after harvest. 1-methylcyclopropene (1-MCP) has been accepted as a commercial substance to improve several fruit qualities. The objective of this research was to study the effects of 1-MCP on the external postharvest qualities and storage life on the ‘Maha Chanok’ mango fruit. The experiment was laid out in a Completely Randomized Design with three replicates, ten fruits per replicate. Mango fruit was fumigated with 1-MCP at three concentrations (1000, 1250, or 1500 nl l-1) and three fumigation periods (12, 18, or 24 h), compared with the control fruit. After treating, all treatments were stored under ambient temperature (27 °C, 80%R.H.). The following determinations were made every two days for assessment of fruit weight loss, firmness, chlorophyll content, decay incidence, and storage life. The results showed that fruit treated with 1500 nl l-1 1-MCP for 24 h had the maximal fruit firmness. For chlorophyll content, the results showed that fruit-treated with 1500 nl l-1 1-MCP for 12 h could effectively retain the highest chlorophyll contents. Furthermore, both the lowest fruit decay and the longest storage life of 12 days were achieved from the fruit treated with 1000 nl l-1 1-MCP for 12 h.

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Pengujian Umur Simpan Kopi Arabika Bubuk Pada Jenis Kemasan dan Suhu Simpan Yang Berbeda

Jurnal Tanaman Industri dan Penyegar ◽

10.21082/jtidp.v8n1.2021.p37-48 ◽

2021 ◽

Vol 8 (1) ◽

pp. 37

Author(s):

Elsera Br Tarigan ◽

Edi Wardiana ◽

Handi Supriadi

Keyword(s):

Shelf Life ◽

Storage Temperature ◽

Storage Period ◽

Fat Content ◽

Test Method ◽

Life Test ◽

Coffee Plantations ◽

Randomized Design ◽

Completely Randomized Design ◽

And Storage

Coffee is a beverage that is widely consumed around the world. Proper packaging and storage temperature may extend shelf life of ground coffee. The study aimed to analyze the shelf life of ground Arabica coffee stored in different packaging types and temperature, conducted at smallholder coffee plantations in Garut Regency and the Integrated Laboratory of Indonesian Industrial and Beverage Crops Research Institute, Sukabumi, from June to August 2018. A completely randomized design in factorial was used with 3 factors and 2 replications. The first factor was the packaging type which consisted of 3 types: thick alumunium foil 65m (AF65), thick alumunium foil 130m (AF130), and thick lamination 114m (L144). The second factor was the storage temperature which consisted of 3 levels: 25 oC, 35 oC, and 45 oC, while the third factor was the storage period which consisted of 5 levels: coffee unstored, and coffee stored for 2 weeks, 4 weeks, 6 weeks, and 8 weeks. The variables observed were the water and fat content, and the analysis of shelf life was carried out using the ASLT (Accelerated Shelf Life Test) method. The results showed that during storage, the water content increased, whereas the fat content decreased. Fat content is a critical variable in determining the shelf life of coffee. The coffee in AF130 packaging has longer shelf life than in AF65 and L144. To extend the shelf life of coffee packaged in AF130 and L144 is best kept at 45 oC whereas coffee in AF65 packaging is ideally at 25 oC.

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