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

Determination of Pinussylvestris seed maturity using leachate conductivity measurements

1993 ◽  
Vol 23 (5) ◽  
pp. 864-870 ◽  
Author(s):  
Kenneth Sahlén ◽  
Svein Gjelsvik
Keyword(s):  
Regression Analysis ◽  
Scots Pine ◽  
Inorganic Phosphorus ◽  
Germination Percentage ◽  
Conductivity Measurements ◽  
Physiological Maturity ◽  
Explanatory Variables ◽  
Northern Fennoscandia ◽  
Seed Maturity

To determine whether leakage from seeds during imbibition could be used to determine maturity of Pinussylvestris L. seeds, leachate conductivity and amounts of carbohydrates and inorganic phosphorus were measured for seeds repeatedly collected from three localities in northern Fennoscandia during the ripening season. The seeds were also radiographed and tested for germination. Leachate conductivity as well as the leakage of inorganic phosphorus and carbohydrates decreased during ripening with increasing anatomical and physiological maturity until the approximate time for cessation of anatomical development. No further anatomical development occurred when leachate conductivity was lower than 6 μS•cm−1•seed−1 and the seeds were not physiologically mature as long as leachate conductivity exceeded 3–5 μS. Leachate conductivity and the amount of leached carbohydrates were 4–8 and 10–15 times higher, respectively, in nongerminable than in germinable seeds. Using regression analysis the germination percentage during ripening could be estimated with r2 between 0.96 and 0.99 with anatomical potential and leachate conductivity as explanatory variables. It is concluded that leachate conductivity measurements can be very useful for determination of Scots pine seed maturity.

scholarly journals Physiology of Growth and Development of Fruits and Seeds of Common Beans

2020 ◽  
Vol 9 (1) ◽  
pp. 186
Author(s):  
Samara Dayse Da Luz Ayres ◽  
Jackson Silva Nóbrega ◽  
Riselane de Lucena Alcântara Bruno ◽  
Ademar Pereira De Oliveira ◽  
Edna Ursulino Alves ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Growth And Development ◽  
Seed Quality ◽  
Dry Mass ◽  
Germination Percentage ◽  
Common Beans ◽  
Physiological Maturity ◽  
Seed Analysis ◽  
Physiological Quality

Common beans are one of the most economically important legumes in the world. The determination of the ideal harvesting period may coincide with the maximum seed quality and vigor. Thus, the objective was to evaluate the physiology of growth and development of fruits, seeds and seedlings of two cultivars of common beans. To this end, two cultivars of common beans were used: the “Macarrão Trepador” and “Rasteiro Fartura” harvested every five days after anthesis (DAA). The pods were harvested and sent to the laboratory for seed analysis and extraction. In the laboratory, biometric characteristics of fruits and seeds, physiological quality (germination and vigor) and chemical composition of seeds were evaluated. The physiological maturity of “Macarrão Trepador” and “Rasteiro Fartura” cultivars occurred at 35 DAA, during which the seeds had the maximum dry matter and the minimum water content. The chemical composition of the seeds of both cultivars was similar, except for lignin, whose content was higher in “Rasteiro Fartura” cultivar at 25 DAA. The color and dry mass of fruits and seeds, germination percentage, first germination count, germination speed index and average germination time are the indicators that help in determining the physiological maturity point.

scholarly journals Seed Development and Quality in Maize Cultivars

2011 ◽  
Vol 39 (1) ◽  
pp. 178 ◽  
Author(s):  
Kazem GHASSEMI-GOLEZANI ◽  
Zahra TAJBAKHSH ◽  
Yaeghoob RAEY
Keyword(s):  
Seed Development ◽  
Seed Weight ◽  
Seed Quality ◽  
Dry Weight ◽  
Germination Percentage ◽  
Genetic Constitution ◽  
Physiological Maturity ◽  
Maize Cultivars ◽  
Filling Phase

In order to evaluate seed development and quality of maize (Zea mays) cultivars (DC-370, SC-500, OSSK-602 and SC-604), a split plot experiment (using R.C.B. design) with three replicates was conducted in 2009 at the Research Farm of the Faculty of Agriculture, University of Tabriz, Iran. Seeds were harvested at five day intervals in eight stages. Subsequently, the quality of seed samples was determined in the laboratory. Germination percentage and seedling dry weight were enhanced, but electrical conductivity of seed leachates was reduced with increasing seed weight on mother plant. Maximum seed quality of maize cultivars was attained at the end of seed filling phase. Seed quality at earlier harvests was low, because of immaturity. Differences in maximum seedling dry weight of maize cultivars were attributed to variation in genetic constitution. It was concluded that in maize cultivars, maximum seed quality could be achieved at physiological maturity.

scholarly journals Relationship of Hull Mesocarp Color to Seed Germination and Vigor in Large-Seeded Virginia-Type Peanuts

1995 ◽  
Vol 22 (1) ◽  
pp. 22-26 ◽  
Author(s):  
J. F. Spears ◽  
G. A. Sullivan
Keyword(s):  
Accelerated Aging ◽  
Dry Weight ◽  
Seed Moisture Content ◽  
Physiological Maturity ◽  
Seed Maturity ◽  
Seed Moisture ◽  
Arachis Hypogaea L ◽  
Maturity Class ◽  
Relationship Of

Abstract Classification of peanuts (Arachis hypogaea L.) based on pod mesocarp color has become a popular means of estimating maturity of runner peanuts. This study was initiated to determine if the hull mesocarp color is related to seed maturity of virginia-type peanuts and to evaluate changes in quality as seed mature. Cultivars NC 7 and NC 9 peanuts were harvested by hand in 1990, 1991, and 1992. Pods were separated according to mesocarp color. Seed moisture content and dry weight within a maturity class varied with cultivar and production year. Germination of NC 7 seed grown in 1990 and 1992 increased as seed approached maturity. Immature NC 9 seed grown in 1991 and 1992 had substantially lower germination than seed from mature pods. There was no increase in germination during maturation of NC 7 seed harvested in 1991 or NC 9 from 1990. Seed leakage during imbibition, measured by electrical conductivity, decreased as seed matured. The lowest leakage levels occurred when seed had reached physiological maturity. Germination following accelerated aging (AA) increased as seed matured. Maximum AA germination of NC 7 occurred when seed had reached 77, 84, and 100% of their final dry weight in 1990, 1991, and 1992, respectively. NC 9 seed achieved maximum germination following AA after the seed amassed at least 90% of their final dry weight.

scholarly journals Development of priming technology for enhanced planting value of seeds in kabuli chickpea (Cicer arietinum L.)

2021 ◽  
Vol 13 (2) ◽  
pp. 735-743
Author(s):  
Umesh Hiremath ◽  
Basave Gowda ◽  
Lokesh G.Y . ◽  
B. S. Ganiger
Keyword(s):  
Root Length ◽  
Seed Quality ◽  
Dry Weight ◽  
Germination Percentage ◽  
Quality Parameters ◽  
Shoot Length ◽  
Growth And Yield ◽  
Seedling Vigour ◽  
Seedling Length ◽  
Vigour Index

The continuous rise in global population demands more food production under limited land resources accompanied by climate change. More oversupply of quality seeds to meet ever-growing food demand is a highly challenging task. Seeds with low vigour level limit the growth and yield of crops at varied field conditions. Hence, an experiment was conducted to develop a technique for the fast and homogeneous growth of kabuli chickpea seeds. The priming treatments evaluated in the present study enhanced the various seed quality parameters of kabuli chickpea significantly when compared to control. Hydro-priming for 4 hours (at 20°C) and air drying for 72 hours showed better results compared to rest of the treatments both in fresh seeds which recorded higher first count (66.38%), germination (92.50%) root length (11.85 cm), shoot length (6.16), mean seedling length (18.01), dry seedling weight (747 mg), seedling vigour index-I (1665), higher speed of emergence (0.3992) and old seeds with higher first count (61.88%), germination (74.13%) root length (8.15 cm), shoot length (5.85 cm), mean seedling length (14.00 cm), seedling dry weight (611 mg), seedling vigour index-I (1056), higher speed of emergence (0.3814). The aged seeds have recorded 29 % increase in germination percentage in contrast to 8 percent increases in fresh seeds. Kabuli chickpea seeds could be subjected to hydropriming, an affordable, alternative, and eco-friendly technique for improving seed and seedling vigour of kabuli chickpea.

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.

scholarly journals Impact of seed size on seeds viability, vigor and storability of Hordeum vulgare (L.)

2018 ◽  
Author(s):  
M. Massimi
Keyword(s):  
Seed Germination ◽  
Seed Size ◽  
Seed Quality ◽  
Accelerated Aging ◽  
Dry Weight ◽  
Germination Percentage ◽  
Seedling Vigor ◽  
Hordeum Vulgare L ◽  
Vigor Index ◽  
The Impact

Seed size may influence seed germination, and seedling vigor. Few investigations are available about the effect of seed size on barley seedling vigor in Jordan. The present study was designed to investigate the impact of seed size on germination percentage, seedling dry weight, seedling vigor index, and germination percentage after accelerated aging in barley. Three seed sizes i.e. large, medium, and small (having diameter of > 2.75 millimeter, 2.5 - 2.75 millimeter, and less than 2.5 millimeter, respectively) were tested in the experiment. Seed quality for different seed size categories was evaluated in the laboratory by measuring seed germination, germination after accelerated aging, as well seedling dry weight and vigor index. Results showed significant differences for large seeds in germination percentages, seedling dry weight and vigor index. It may be concluded that large seed size of barley showed best quality.

scholarly journals Temporal variation in seed quality of Indian spinach preserved in different containers

2016 ◽  
Vol 5 (2) ◽  
pp. 51-57 ◽  
Author(s):  
M Kamruzzaman ◽  
S Khatun ◽  
A Rakib ◽  
MI Hoque ◽  
MH Rani
Keyword(s):  
Moisture Content ◽  
Seed Quality ◽  
Initial Moisture Content ◽  
Dry Weight ◽  
Germination Percentage ◽  
Seedling Vigor ◽  
Fresh Weight ◽  
Seed Technology ◽  
Vigor Index

The experiment was conducted to investigate the seed quality of Indian spinach for three months stored at different containers (Plastic pot, polythene bag and cloth bag) during 2013-2014 at Seed Technology Laboratory of Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur. The initial moisture content of the seed was 9.89% with 75.00% germination. However, after two months, the seed had a different range of increased moisture content with reduced germination percentage depending upon the packing materials. Among the three containers, seeds stored at cloth bag absorbed more moisture (14.36%) from surrounding atmosphere followed by the moisture content, 12.67% and 11.50% of polythene bag and airtight plastic pot, respectively. Seeds stored at plastic pot, polythene bag and cloth bag exhibited 65.00, 64.00 and 50.00 per cent germination, respectively. Similarly, the fresh weight and dry weight of seedling and seedling vigor were also decreased. The seeds of plastic pot were good in term of germination capacity, fresh and dry weight and vigor index in comparison to those stored at cloth bag and polythene bag.Int. J. Agril. Res. Innov. & Tech. 5 (2): 51-57, December, 2015

scholarly journals The Effect of Stage of Harvest and Storage on the Seed Quality of Chickpea (Cicer arietinum L.)

1970 ◽  
Vol 44 (3) ◽  
pp. 303-310
Author(s):  
A Khatun ◽  
MAH Bhuiyan ◽  
MM Ud-deen
Keyword(s):  
Moisture Content ◽  
Root Length ◽  
Laboratory Experiments ◽  
Seed Quality ◽  
Dry Weight ◽  
Germination Percentage ◽  
Shoot Length ◽  
Harvesting Stage ◽  
And Storage

Laboratory experiments were carried out to determine the effects of harvesting stages on the seed quality of chickpea. Chickpea seed of three varieties (BARI Chola-5, BARI Chola-6 and BARI Chola-8) were collected at three harvestings times i.e. from three different times at 7 days interval prior to harvesting, viz. i) when the pods were yellowish with a few yellow greens (H1 stage), ii) when most of the pods were light brown with a few yellow (H2 stage), and iii) when all the pods were completely brown and dry (H3 stage). Significant variation was observed in three varieties of chickpea for all the parameters studied except vigour-I. The highest germination percentage, root length, shoot length, root plus shoot length and vigour-II was observed in BARI Chola-5 which was significantly higher over BARI Chola-8. Dry weight was found to be significantly higher in BARI Chola-8 which was identical to BARI Chola-6. Moisture content was significantly higher in BARI Chola-8. Seed collected at the stage when most of the pods were light brown with a few yellow (H2 stage) recorded the highest germination percentage, dry weight, vigour-I and root length. Pods (H1 stage) gave the highest moisture content in seeds. BARI Chola-5 seeds recorded the highest germination at H2 stage. Interaction effects of varieties and harvesting stage had non-significant effect on germination percentage, vigour-I, shoot length and vigour-II in both the years. Keywords: Chickpea, Harvesting stage, Storage, Vigour, Moisture, Germination DOI: 10.3329/bjsir.v44i3.4403 Bangladesh J. Sci. Ind. Res. 44(3),303-310, 2009  

scholarly journals Assessment of seed quality and sex determination in hop seedlings using molecular markers

2020 ◽  
Vol 42 ◽  
pp. e45
Author(s):  
Marília Pereira Machado ◽  
Andreza Cerioni Belniaki ◽  
André Felipe Bernert ◽  
Erik Nunes Gomes ◽  
João Carlos Bespalhok Filho ◽  
...  
Keyword(s):  
Molecular Markers ◽  
Sex Determination ◽  
Seed Quality ◽  
Germination Percentage ◽  
Brewing Industry ◽  
Breeding Programs ◽  
Normal Seedling ◽  
Physiological Quality ◽  
Male Specific

Brazil is the world's third largest beer consumer and currently imports all of its hops for the brewing industry. Such a fact justifies the selection of hop genotypes adapted for cultivation locally, which requires high quality seeds and efficient sex determination of the seedlings. The objectives of this study were to develop a methodology to assess hop seed quality and to efficiently determine hop seedling sex through the use of male-specific molecular markers. Freshly harvested hop seeds were germinated with and without pre-chilling (3-5 ° C) for 3, 6 and 12 weeks and then germinated at 20 or 25 ° C in the presence or absence of light, evaluating germination percentage and germination speed index. F1 progenies were obtained from after seed germination in a greenhouse and seedlings sex was determined using male-specific molecular markers. The best conditions for physiological quality assessment of hop seeds used in the present study were pre-chilling for 12 weeks, followed by germination at 25 ° C, and normal seedling counts at 7 and 15 days. The progeny submitted to molecular marker sexing was composed of 61.3% female plants. The established methodologies presented here can be considered efficient and may contribute to expedite hops breeding programs.

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