Harvest attributes and seed quality predict physiological maturity of pennycress

2022 ◽  
Vol 176 ◽  
pp. 114355
Author(s):  
Julija A. Cubins ◽  
Samantha S. Wells ◽  
Maninder K. Walia ◽  
Donald L. Wyse ◽  
Roger Becker ◽  
...  
Keyword(s):  
Seed Quality ◽  
Physiological Maturity

scholarly journals Fruit maturation stage on the physiological quality of maroon cucumber seeds

2019 ◽  
Vol 49 ◽  
Author(s):  
Cleisson Dener da Silva ◽  
Andréia Márcia Santos de Souza David ◽  
Josiane Cantuária Figueiredo ◽  
Jorge Luiz Rodrigues Barbosa ◽  
Rayane Aguiar Alves
Keyword(s):  
Seed Quality ◽  
Seedling Emergence ◽  
Accelerated Aging ◽  
Dry Mass ◽  
Maturation Stage ◽  
Physiological Maturity ◽  
Physiological Quality ◽  
Photography Analysis ◽  
The Ideal

ABSTRACT To obtain seeds of high physiological quality, it is of paramount importance to define the ideal harvest moment, which oftentimes corresponds to the period when the physiological maturity is reached. This experiment aimed to study the maturation process and determine the best harvest season of maroon cucumber fruits (Liso Gibão cultivar), in order to reach the maximum physiological seed quality. The flowers were labeled during the anthesis and the fruits harvested at 14, 21, 28, 35, 42, 49 and 56 days after the anthesis (DAA). The fruits had their visual aspects registered by photography analysis and, later, the seeds were extracted for physical (water and dry matter contents) and physiological (germination, seedling emergence, emergence speed index, accelerated aging and electrical conductivity) analyses. It was observed that the seeds reach the maximum dry mass (8.08 mg seed-1) between 47 and 49 DAA. However, the seed physiological maturity, characterized by a maximum germination (70 %) and vigor, occurs at 56 DDA. The best season to harvest seeds with a higher physiological quality takes place from 49 to 56 DDA, when the fruits present a yellowish color.

scholarly journals Physiological maturity and drying speed in the quality of zucchini ( Cucurbita pepo L.) seeds

2017 ◽  
Vol 39 (2) ◽  
pp. 142-149
Author(s):  
Hellismar Wakson da Silva ◽  
João Almir Oliveira ◽  
Lucinda Helena Fragoso Monfort ◽  
Jodson Moraes dos Santos ◽  
Ana Clara Reis Trancoso ◽  
...  
Keyword(s):  
Seed Quality ◽  
Seedling Emergence ◽  
Seed Mass ◽  
Accelerated Aging ◽  
Maturity Stage ◽  
Physiological Maturity ◽  
Randomized Design ◽  
Maturation Stages ◽  
Seed Health Test

Abstract: Harvesting and drying are essential procedures to obtain high quality seeds as well as for their conservation during storage. The goal of this research was to identify the physiological maturity stage and to verify the effect of drying speeds on the quality of zucchini seeds. A completely randomized design in a 3x2x2 factor scheme was used, involving three fruit maturation stages (49, 56 and 63 days after anthesis - DAA), two drying speeds (slow and quick) and two storage periods (0 and 6 months). Seed quality was evaluated by germination, first count, accelerated aging, electrical conductivity, tetrazolium, seedling emergence, emergence speed index and seed health test. Moisture content, thousand seed mass and percentage full seeds were also evaluated. Zucchini seeds reach maximum quality at 49 DAA. Slow or quick drying and storage do not affect the physiological quality of seeds that were harvested at 49 DAA. The delayed harvest of fruits reduces the quality of seeds. Quick drying reduces the incidence of the fungi Alternaria, Cladosporium, Phoma and Fusarium, and increases the occurrence of Aspergillus and Penicillium.

The development of seed quality in spring barley in four environments. II. Field emergence and seedling size

1991 ◽  
Vol 1 (3) ◽  
pp. 179-185 ◽  
Author(s):  
C. Pieta Filho ◽  
R. H. Ellis
Keyword(s):  
Hordeum Vulgare ◽  
Seed Quality ◽  
Spring Barley ◽  
Seedling Emergence ◽  
Dry Weight ◽  
Physiological Maturity ◽  
Production Environments ◽  
The Mean ◽  
Field Emergence ◽  
Positive Correlations

AbstractThe field emergence ability of a total of 88 seed lots of spring barley (Hordeum vulgare L.) harvested serially during development in 2 years was compared, as was the size of the resultant seedlings. For seedsproduced in each year, field emergence and the mean dry weight of emerged seedlings were significantly greater for seed lots harvested some timeafter physiological maturity (end of the seed-filling period) than for those harvested at or before this developmental stage. This is compatiblewith results for the potential longevity of these lots. It is concluded that barley seed quality continues to increase after physiological maturity, and that the developing seeds attain maximum quality (however this is assessed) close to when the seed crop can be combine harvested. Positive correlations were detected between seedling emergence and seed dry weight (P<0.05) and between the mean dry weight of emerged seedlings and seed dry weight (P<0.005) among seed lots harvested close to when maximum quality was attained in four seed production environments.

The development of seed quality in spring barley in four environments. I. Germination and longevity

1991 ◽  
Vol 1 (3) ◽  
pp. 163-177 ◽  
Author(s):  
C. Pieta Filho ◽  
R. H. Ellis
Keyword(s):  
Dry Matter ◽  
Seed Quality ◽  
Spring Barley ◽  
Dry Matter Accumulation ◽  
Maternal Plant ◽  
Physiological Maturity ◽  
Moisture Contents ◽  
Germination Ability ◽  
Delayed Maturation ◽  
Seed Crops

AbstractSeed development and changes in germination ability and longevity were monitored in control and shaded spring barley (Hordeum vulgareL.)crops grown in two contrasting years. Shading reduced seed dry matter accumulation rates by 24–28% and delayed maturation drying slightly, but had little effect (0–2 d) on the timing of physiological maturity (end of the seed-filling period); final seed dry weights were 76–85% of controls. Moisture contents (wb) at physiological maturity were 48–55%; final mean seed dry weights in the controls were 40.9 mg(S.E. 0.6) in 1988 and 35.2 mg (S.E. 0.5) in 1989. Shading had little orno effect on germination ability or longevity in either year. Seeds fromthe first harvest were viable when dried below 15% moisture content despite being only 34% (1988) to 63% (1989) filled; desiccation promoted germination. Maximum germination achieved after forced desiccation occurredin seeds harvested 7–10 d (1989) to 11–13 d (1988) after physiological maturity, with little subsequent change during the following 14 (1988) or 27 d (1989). Longevity continued to increase during development until a maximum was reached 18–20 d (1988) to 27 d (1989) after physiological maturity (at moisture contents on the mother plant of 18–19% and 14–15%, respectively). In both years, the longevity of these seeds was greater (P<0.005) than that of seeds harvested either subsequently or earlier at physiological maturity. The results contradict the hypothesis that maximum seed quality coincides with physiological maturity and thereafter declines. Rather, maximum seed quality was attained close to when barley seed crops can be combine harvested The subsequent decline in potential longevity on the maternal plant in the field was quantitatively similar to that expected during post-harvest storage.

scholarly journals PRODUTIVIDADE, QUALIDADE FISIOLÓGICA E RESÍDUO EM SEMENTES DE TRIGO EM FUNÇÃO DA DESSECAÇÃO COM HERBICIDAS

2018 ◽  
Vol 14 (3) ◽  
pp. 132-143
Author(s):  
Lizandro Ciciliano Tavares ◽  
Sandro de Oliveira ◽  
Bruno Moncks Silva ◽  
Elisa Souza Lemes ◽  
Francisco Amaral Villela ◽  
...  
Keyword(s):  
Seed Yield ◽  
Seed Quality ◽  
Residual Effects ◽  
Wheat Crop ◽  
Physiological Maturity ◽  
Ammonium Glufosinate ◽  
Before And After ◽  
Physiological Quality ◽  
Factor C ◽  
And Control

In the wheat crop,pre-harvest desiccation with herbicides caninfluencethe productivity and physiological seed quality.The study aimed to quantify the yield, physiological seed quality,andresidue in wheat seeds.The experimental design was a randomized block designina 2x2x6 factorial, being thefactor A constituting of wheat cultivars (BRS 177 e BRS Umbu),the factor B application stages (before and after physiological maturation) and, factor C desiccation with different herbicides (2,4-D, paraquat, glyphosate, ammonium glufosinate, metsulfuron-methyl, and control) with four replications.The variables analyzed were thethousand seedsweight, hectoliter weight, number of antheciumper spike, seed yield, physiological seed quality by the vigortestsand standard germination, and residue in wheat seeds after the application of herbicides in pre-harvest.The desiccation in pre-harvest herbicide held at a later stage after physiological maturity, in general, does not affect the physiological quality and seed yield of BRS Umbu and BRS 177 cultivars. The application of methyl-metsulfuronand paraquat does not show residual effects on the seed independent of the application stage, while the application of ammonium glufosinate, glyphosate, and 2,4-D,when applied before the physiological maturity result residue levels in wheat seed.

scholarly journals Gene expression of antioxidant enzymes and coffee seed quality during pre- and post-physiological maturity

2014 ◽  
Vol 13 (4) ◽  
pp. 10983-10993
Author(s):  
F.C. Santos ◽  
F. Caixeta ◽  
A.C.S. Clemente ◽  
E.V. Pinho ◽  
S.D.V.F. Rosa
Keyword(s):  
Gene Expression ◽  
Antioxidant Enzymes ◽  
Seed Quality ◽  
Physiological Maturity ◽  
Coffee Seed

scholarly journals THE YIELD AND QUALITY PROPERTIES OF CHICKPEA SEEDS (CICER ARIETINUM L.) AFFECTED BY HARVEST TIMES

2020 ◽  
Vol 53 (1) ◽  
pp. 51-61
Author(s):  
S. GÜRSOY
Keyword(s):  
Cicer Arietinum ◽  
Seed Yield ◽  
Seed Weight ◽  
Seed Quality ◽  
Harvest Time ◽  
True Density ◽  
Physiological Maturity ◽  
Quality Properties ◽  
Cicer Arietinum L ◽  
Yield And Quality

Harvesting of chickpea (Cicer arietinum L.) seeds at right time of maturity is one of the important issues because pod dropping and shattering is a major problem during harvest. Also, the physical properties of chickpea seeds can be affected by harvest time. For this purpose, a field experiment was carried out to examine the effects of harvest times after physiological maturity on the seed yield per plant and the seed quality properties in chickpea production. The treatments used in the experiment consisted of five harvest times, which chickpea pods were harvested at physiological maturity (H1) and 5, 10, 15, and 20 days after physiological maturity (H2, H3, H4 and H5, respectively). The physiological maturity time (R7) was considered as the stage that leaves start to yellow and 50% of pods are yellow. Moisture content, dimension properties, hundred seed weight, true density, bulk density and porosity and seed yield per plant was determined in the study. The results showed that all measured variables were affected by harvest time. The true density and porosity increased with delayed harvest time. But, the other measured variables decreased when harvest was delayed.

scholarly journals The Development of Seed Quality in Brassicas

1999 ◽  
Vol 9 (3) ◽  
pp. 335-340 ◽  
Author(s):  
David W. Still
Keyword(s):  
Seed Development ◽  
Seed Quality ◽  
Extended Period ◽  
Population Based ◽  
Seed Vigor ◽  
Brussels Sprouts ◽  
Physiological Maturity ◽  
Brassica Crops ◽  
And Storage ◽  
Reduced Water

Brassica crops have indeterminate growth and flower over an extended period of time. Harvested seed is therefore comprised of seed of varying degrees of physiological maturity and quality. Using population-based threshold models, broccoli (Brassica oleracea L. Group Italica), brussels sprouts (B. oleracea L. Group Gemmifera), red cabbage (B. oleracea L. Group Capitata), and rapeseed (B. napus L.) were characterized during seed development with respect to sensitivity to abiotic stress (reduced water potential) and shelf life. Using these models our data suggests that the physiological patterns of seed development are the same in all brassica crops we have tested to date. These population-based models can be used to provide a biological basis in which to evaluate cultural, postharvest and storage practices to ensure the production and maintenance of seed vigor.

scholarly journals Phenological Study and Determination of Physiological Maturity of Purwoceng Seeds

2019 ◽  
Vol 4 (1) ◽  
Author(s):  
Devi Rusmin ◽  
Ireng Darwati
Keyword(s):  
Seed Quality ◽  
Dry Weight ◽  
Germination Percentage ◽  
Physiological Maturity ◽  
Experimental Station ◽  
Seed Maturity ◽  
Germination Speed ◽  
Research Institute

The experiment was conducted at Gunung Putri Experimental Station and PlantPhysiology Laboratory of Indonesian Medicinal and Aromatic Crops Research Institute(IMACRI), from November 2008 to July 2009. The aim of the experiment was to determinephysiological maturity of Pimpinella pruatjan seed and to study its morphological structures.Observation and sampling using one hundred plants with four replications. Results of theexperiment showed that the physiological seed maturity on the first and third umbell of P.Pruatjan was achieved at 7 weeks after anthesis, and physiological seed maturity on thesecond umbell was achieved at 8 weeks after anthesis. Seed dry weight on the physiologicalseed maturity on first, second and third umbells were 166,87; 158,20, and 141,35 mg/100pericarp, respectively. Germination percentage and germination speed on the first, secondand third umbells were 5,75 % and 0,22 %/etmal; 22,75 % and 0,94 %/etmal; 10,50 % and0,38 %/etmal, respectively.Keywords: flowering, pruatjan, seed quality, morphology

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