CONTROLLED DETERIORATION TEST AS VIGOR ASSESSMENTS IN PEPPER SEED LOTS: 1. DETERMINATION OF APPROPRIATE SEED MOISTURE CONTENT

International research on vegetable seed vigor is not at the same level attained for grain crops species. This study was conducted to identify reliable procedures for the accelerated aging and controlled deterioration tests to rank onion (Allium cepa L.) seed lots according to their physiological potential. Six seed lots of the cultivars Aurora and Petroline were evaluated in the laboratory for germination, first count, seedling vigor classification, traditional and saturated salt accelerated aging (41ºC / 48 and 72 h), controlled deterioration (24% of water / 45ºC / 24 h) and seedling emergence tests. Seed moisture content after the saturated salt accelerated aging test was lower and uniform, which is considered an important advantage in comparison to the traditional procedure. The saturated salt accelerated aging (41ºC / 48 and 72 h) and controlled deterioration (moisture content adjusted to 24% / 45ºC / 24 h) tests were the best procedures to assess the physiological potential of onion seeds, and are indicated for use in quality control programs.

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Determination of seed moisture content in ginseng (Panax ginseng C.A. Mey)

Seed Science and Technology ◽

10.15258/sst.2014.42.3.10 ◽

2014 ◽

Vol 42 (3) ◽

pp. 444-448

Author(s):

H. Zhang ◽

S.Q. Xu ◽

S:Y. Xiao ◽

Y.P. Wang

Keyword(s):

Moisture Content ◽

Panax Ginseng ◽

Seed Moisture Content ◽

Seed Moisture

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Determination of seed moisture content in small-seeded pasture legumes

Australian Journal of Experimental Agriculture ◽

10.1071/ea9870377 ◽

1987 ◽

Vol 27 (3) ◽

pp. 377 ◽

Cited By ~ 3

Author(s):

GB Taylor

Keyword(s):

Moisture Content ◽

Seed Moisture Content ◽

Constant Weight ◽

Reliable Technique ◽

Seed Testing ◽

Moisture Contents ◽

Pasture Legumes ◽

Seed Moisture ◽

Improved Technique

An improved technique for the determination of seed moisture content in small-seeded annual legumes is described. Changes in weight of permeable and impermeable seed of Medicago truncatula, M. polymorpha and Trifolium subterraneurn, which were either left intact or cut in half, were measured in air-ovens at 105 and 130�C. Drying intact seeds for 1 h at 130�C, as specified by the International Seed Testing Association, seriously underestimated moisture content in most seed samples. Seeds dried to approximately constant weight at 130�C appeared to overestimate moisture contents by about 1%, presumably because of volatilisation losses of material other than unbound water. At 105�C, halved seeds lost weight rapidly during the first day then slightly gained weight for several days before resuming a gradual weight loss. Drying intact seeds of M. truncatula and T. subterraneurn at 105�C for 2 days gave seed moisture contents similar to those obtained from halved seeds. Intact impermeable seeds of M. polymorpha were very much slower than those of the other species to lose weight. taking 14 days to approach an apparent moisture content close to that of halved seeds. Drying halved seeds for 24 h at 105�C appears the most reliable technique.

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Determination of the moisture content of white and yellow corn from ohaji in imo state of nigeria using the dry-weight technique

Proceedings of 21th International Drying Symposium ◽

10.4995/ids2018.2018.7486 ◽

2018 ◽

Author(s):

Offurum Julius Chigozie ◽

C.M. Morgan

Keyword(s):

Moisture Content ◽

Dry Weight ◽

Mean Value ◽

Seed Moisture Content ◽

Imo State ◽

Yellow Corn ◽

Seed Moisture ◽

The Mean ◽

High Constant Temperature

The water content determination of two maize species (Yellow corn- and White corn- ) located at Ohaji in Imo State of Nigeria were considered in this study. This was motivated by the regular reported cases of the seed post-harvest spoilages, especially in the local communities. And the moisture content of a particular seed could vary according to the various location of crop, presumably due to the soil texture. The moisture content of a given crop seed can influence its storage value, as well as its choice of selection during manufacturing processes. It was, thus, necessary to determine the moisture content of the two maize species (white and yellow corn) from Ohaji in Imo State of Nigeria, in order to identify their dispositions, especially during storage. Modified High Constant Temperature Oven method, as prescribed by the International Seed Testing Association (which involves preliminary pre-drying and grinding), was employed, at a temperature of 102oC. This involved the use of dry-weight technique, which is expressed as a percentage of the dry weight of the seeds. The procedure for each sampling was replicated accordingly, and the mean value identified as the actual result. The moisture content for Sample A (white corn) was found to be 31.7%, while that of Sample B (yellow corn) was found to be 21.5%, which shows that the yellow corn would always have longer storage value than the white corn. As any change in the seed moisture content has a way of affecting its storage life, it is advisable not to store the white corn longer than it could be applied in the yellow corn for a better storage value.Keywords: Determination, Moisture Content, White Corn, Yellow Corn, Dry-weight Basis

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Controlled deterioration test for evaluation of sunn hemp seed vigor

Journal of Seed Science ◽

10.1590/2317-1545v37n4151816 ◽

2015 ◽

Vol 37 (4) ◽

pp. 249-253 ◽

Cited By ~ 1

Author(s):

Arthur Batoqui Costa e Silva ◽

Ícaro Monteiro Galvão ◽

Rafael Marani Barbosa ◽

Clíssia Barboza da Silva ◽

Roberval Daiton Vieira

Keyword(s):

Moisture Content ◽

Accelerated Aging ◽

Seed Vigor ◽

Germination Test ◽

Seed Moisture Content ◽

Hemp Seed ◽

Seed Moisture ◽

Sunn Hemp ◽

Controlled Deterioration ◽

Initial Seed

The controlled deterioration test is efficient for seed vigor evaluation of several species. However, the procedures conditions are incipient, especially in respect to tropical forages such as sunn hemp, which still does not have a standardized procedure. The objective of this research was to adjust the procedures for a controlled deterioration test in Crotalaria juncea L. seeds. For this, five commercial seed lots were evaluated for water content and initial physiological potential (germination test, first germination count, germination speed index, saturated salt accelerated aging with NaCl, electrical conductivity and seedling field emergence). For controlled deterioration test, the initial seed moisture content was adjusted to 18, 21 and 24% and, subsequently, the samples were exposed at 45 °C during 24 hours. Seed germination test was conducted with the use of sand as substrate. Evaluations were performed on the fourth, fifth and sixth day after sowing. The controlled deterioration test for sunn hemp seeds should be performed with 24% seed moisture content, at 45 °C during 24 hours, and the test evaluation on the fourth day after sowing.

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Selection of near Infrared Wavelengths Using Genetic Algorithms for the Determination of Seed Moisture Content

Journal of Near Infrared Spectroscopy ◽

10.1255/jnirs.394 ◽

2003 ◽

Vol 11 (6) ◽

pp. 433-446 ◽

Cited By ~ 26

Author(s):

Torbjörn A. Lestander ◽

Riccardo Leardi ◽

Paul Geladi

Keyword(s):

Genetic Algorithms ◽

Moisture Content ◽

Near Infrared ◽

Seed Moisture Content ◽

Seed Moisture ◽

Infrared Wavelengths ◽

Selection Of

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Controlled deterioration test and use of the Seed Vigor Imaging System (SVIS ® ) to evaluate the physiological potential of crambe seeds

Journal of Seed Science ◽

10.1590/2317-1545v39n4177911 ◽

2017 ◽

Vol 39 (4) ◽

pp. 393-400 ◽

Cited By ~ 3

Author(s):

Erica Fernandes Leão-Araújo ◽

Juliana Faria dos Santos ◽

Clíssia Barboza da Silva ◽

Júlio Marcos-Filho ◽

Roberval Daiton Vieira

Keyword(s):

Moisture Content ◽

Imaging System ◽

Seedling Development ◽

Seed Vigor ◽

Test Results ◽

Seed Moisture Content ◽

Seed Moisture ◽

Vigor Index ◽

Controlled Deterioration ◽

Consistency Of The Test

Abstract: Vigor tests are important tools for verifying the physiological potential of seed lots; however, various aspects can interfere in the consistency of the test results. The search for less subjective procedures has drawn the interest of researchers. The aim of this study was to adapt the methodology of the controlled deterioration test and verify the efficiency of the Seed Vigor Imaging System (SVIS ® ) to evaluate the vigor of crambe seeds. Initially, seed moisture content was determined and germination and vigor were evaluated in five seed lots. For the controlled deterioration test, the seed moisture content was adjusted to 18%, 20%, and 22%, and the results were interpreted at four and five days after sowing. The controlled deterioration test should be performed with initial adjustment of seed moisture content to 18%, and the germination test should be evaluated on the fifth day after sowing. SVIS ® provided information on the vigor index and the length and uniformity of seedling development. Computerized image analysis is effective in evaluating the vigor of crambe seeds, and the uniformity of seedling development parameter offers the most consistent data.

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