Germination and storage behaviour of seeds of the subtropical evergreen tree Daphniphyllum glaucescens (Daphniphyllaceae)

2010 ◽  
Vol 58 (4) ◽  
pp. 294 ◽  
Author(s):  
Ching-Te Chien ◽  
Jerry M. Baskin ◽  
Carol C. Baskin ◽  
Shun-Ying Chen
Keyword(s):  
Storage Temperature ◽  
Germination Rate ◽  
Germination Percentage ◽  
Cold Stratification ◽  
Seedling Production ◽  
Seed Moisture Content ◽  
Morphophysiological Dormancy ◽  
Evergreen Tree ◽  
Seed Moisture ◽  
And Storage

Daphniphyllum glaucescens Blume ssp. oldhamii (Hemsl.) Huang is an important subtropical evergreen tree in Taiwan. Seeds of D. glaucescens have non-deep, simple, epicotyl morphophysiological dormancy, and a minimum of 10–12 weeks is required for the first step of seedling production, i.e. hypocotyl emergence. It is not known how to decrease the time for seedling production and how to store seeds for retention of viability. We determined the effects of (i) gibberellic acid and cold-stratification on germination (hypocotyl emergence) and (ii) storage temperature and seed moisture content (MC) on germinability. Exogenous application of GA3 and of GA4 promoted germination and increased the germination rate. Moist cold-stratification at 5°C also promoted germination; the longer the stratification period, the faster the rate of germination. More than 70% of seeds (fresh seeds, MC = 37.6%) dried to an MC of 6.4%, 8.5% and 25.5% (fresh weight basis) retained germinability after a 1-month storage at 5°C, whereas germination percentage decreased to 0–2% after a 12-month storage at the same temperature. Germination percentage of seeds dried to the same MC and stored at 15°C decreased to 0% after 8 months, whereas seeds stored at −20°C did not germinate even after just 1 month of storage. The present evidence suggests that seeds of D. glaucescens have intermediate rather than orthodox or recalcitrant storage behaviour.

scholarly journals Germination of Nonstratified Japanese Tree Lilac Seeds as Influenced by Seed Capsule Maturity and Moisture Content

2014 ◽  
Vol 24 (2) ◽  
pp. 177-180 ◽  
Author(s):  
Todd P. West ◽  
Samuel L. DeMarais ◽  
Chiwon W. Lee
Keyword(s):  
Moisture Content ◽  
Germination Percentage ◽  
Seedling Production ◽  
Fresh Weight ◽  
Seed Moisture Content ◽  
Seed Collection ◽  
The North ◽  
Seed Moisture ◽  
Embryo Dormancy ◽  
Seed Stratification

Temperate-zone woody plant species generally require seed stratification to overcome embryo dormancy. Embryo dormancy is variable in japanese tree lilac (Syringa reticulata) with a recommendation of 30- to 90-days stratification at 1–5 °C. Cultivar propagation generally is done by grafting onto seedling rootstocks. It would be advantageous to rootstock seedling production to be able to reduce or eliminate the need for seed stratification to increase germination numbers as well as having production moved from field beds to greenhouses for quicker production of high-quality rootstock plants suitable for grafting. Research objective of this study was to determine if “green” seed could be used without the need of stratification for japanese tree lilac seedling production. Seed capsule fresh weight and seed moisture content were evaluated to determine if these factors could be used as predictors of germination percentages. Seed was randomly collected at the North Dakota State University campus in Fargo, ND, for seven consecutive weeks starting in Sept. 2011 and 2012. Germination and seed moisture tests were performed weekly. Germination percentage was highest (89.5%) at week 2 and steadily decreased to 0% at week 7. Germination percentages were 77.5%, 89.5%, 78.5%, 67%, 24.5%, 1.5%, and 0% for consecutive collection weeks 1–7, respectively. Seed moisture content was 59.0%, 52.6%, 49.8%, 51.8%, 44.5%, 27.4%, and 8.6% for collection weeks 1–7, respectively. Germination percentage was directly correlated with seed moisture content and decreased as seed capsules matured (natural drying and splitting of capsule seem to disperse seed) during the fall season. Data suggest that timing of fall seed collection from japanese tree lilac is critical and must be done before maturation of the seed capsule to avoid the stratification requirement. Seed capsules with an average fresh weight higher than 0.2 g and seed moisture content greater than 50% produced the highest germination rates without requiring stratification.

scholarly journals Effect of Scarification, Seed Storage Temperature, and Relative Humidity on Lupinus havardii Wats. and Lupinus texensis Hook. Seed Germination

HortScience ◽  
2005 ◽  
Vol 40 (3) ◽  
pp. 782-785 ◽  
Author(s):  
Wayne A. Mackay
Keyword(s):  
Relative Humidity ◽  
Storage Temperature ◽  
Germination Rate ◽  
Seed Storage ◽  
Significant Decline ◽  
Rapid Decline ◽  
Seed Moisture Content ◽  
C Storage ◽  
Seed Moisture ◽  
Seed Scarification

Seeds of Lupinus havardii Wats. and L. texensis Hook. were subjected to scarification, storage temperature (4 or 22 °C), and relative humidity (RH) treatments (11%, 23%, 52%, 75%, or 97% RH) for 12 months. Seed moisture increased as relative humidity increased with scarified seed having the greatest increase in seed moisture content regardless of storage temperature. For both species, the combination of seed scarification before storage, 75% RH, and 22 °C storage temperature resulted in a significant and rapid decline in germinability beginning at 4 months. Scarified L. texensis seed stored at 52% RH and 22 °C also exhibited a significant decline in germinability following 6 months storage. Seed of both species stored under all other conditions germinated similar to or higher than the initial germination rate after 12 months. These results clearly show that scarification can be performed before seed packaging as long as the seed packets are stored at ≤23% RH under 4 or 22 °C with no loss in germinability for at least 1 year.

scholarly journals Effects of Desiccation and Storage Temperature on Seed Germination in Kapok

2016 ◽  
Vol 26 (1) ◽  
pp. 83-88
Author(s):  
YanLing Zheng ◽  
GaoJuan Zhao ◽  
HuanCheng Ma
Keyword(s):  
Seed Germination ◽  
Storage Temperature ◽  
Seed Viability ◽  
Germination Percentage ◽  
Seed Vigor ◽  
Deciduous Tree ◽  
Seed Moisture Content ◽  
Seed Collection ◽  
And Storage ◽  
Mature Seeds

Kapok (Bombax ceiba) is a deciduous tree that can grow in the dry-hot valley of southwestern China where its natural regeneration by seedlings is difficult. As mature fruit split open and seeds disperse by wind, it is difficult to collect fully mature seeds. The effects of seed moisture content (MC) and storage temperatures on seed germination of dark-brown seeds collected from split fruit and light-brown seeds collected ≈10–15 days earlier than the time of fruit split were studied to determine the effective germplasm preservation via the seeds. Dark-brown mature seeds could tolerate desiccation to less than 5% MC and could tolerate −20 and −80 °C. Seeds of kapok showed orthodox storage behavior. They can be stored at subzero temperatures with low MC for a long time. For light-brown seeds, germination percentage (GP), germination index (GI), seedling fresh weight (SFW), and vigor index (VI) decreased significantly after seed desiccation. Germination percentage of light-brown seeds with different MC increased to a different extent after being stored at different temperatures for 1 year (76% to 99%), compared with the fresh seeds (73%). Storing fresh seeds at 4 °C was most favorable to keep seed viability and seed vigor of light-brown seeds. Seed collection could be done several days earlier than the time of fruit burst to ensure increased quantity of collected seeds.

scholarly journals Effect of Storage Temperature and Seed Moisture on Germination of Stored Flowering Dogwood Seed

2005 ◽  
Vol 23 (1) ◽  
pp. 29-32
Author(s):  
Sandra M. Reed
Keyword(s):  
Moisture Content ◽  
Storage Temperature ◽  
Dry Weight ◽  
Seed Moisture Content ◽  
Flowering Dogwood ◽  
Seed Supply ◽  
Seed Moisture ◽  
Percent Germination ◽  
And Storage

Abstract Dogwood producers occasionally face a shortage of flowering dogwood seed. Storing excess seed during years when seed are abundant would allow growers to stabilize their seed supply. This study was conducted to evaluate the effects of seed moisture and storage temperature on the viability of stored flowering dogwood seed. Seed were collected in Fall 1999 and 2000, dried to 6, 10 and 14% moisture content, and stored at 22, 5 and −20C (72, 41 and −4F) for 1, 2 and 3 years. Following storage, seed were cold stratified and sown in a greenhouse. Percent germination and seedling dry weight were recorded. Seed stored at 22C (72F) quickly lost viability. At 5C (41F), seed moisture content was critical, with seed dried to 14% moisture content germinating poorly after 2 years and failing to germinate after 3 years in storage. In general, storage at −20C (−4F) was superior to storage at 5C (41F). Seed moisture content was not as critical at −20C (−4F) as it was at 5C (41F), but may become more important if length of storage is extended past 3 years. Based on the results of this study, it is recommended that seed be dried to 6 to 10% moisture prior to storage, stored in air-tight containers, and stored in a −20C (−4F) freezer.

scholarly journals Effect of Desiccation and Storage Environment on Longevity of Ehretia Cymosa Thonn. Seeds.

2020 ◽  
Author(s):  
Peter Murithi Angaine ◽  
Stephen Muriithi Ndungú ◽  
Alice Adongo Onyango ◽  
Jesse Omondi Owino
Keyword(s):  
Moisture Content ◽  
Storage Temperature ◽  
Seed Viability ◽  
Seed Storage ◽  
Storage Duration ◽  
Seed Moisture Content ◽  
Seed Moisture ◽  
Storage Behavior ◽  
Storage Studies ◽  
And Storage

Abstract Background: Globally, forestry faces challenges in the availability of seeds due to limited knowledge on seed handling of various species. Forestry seeds are constantly being reviewed and classified as either recalcitrant, intermediate, or orthodox based on their storage behavior. It is essential to understand the tree seed storage behavior to maintain seed viability and thus minimize seed losses. There is scanty literature combining factors of seed moisture content (6%, 9%, 12%, 15%, and 20%), seed storage temperature (20oC, 5oC and -20oC), seed storage duration (1, 4, 9 and 12 months), and germination in different sites with varying environmental variables. Ehretia cymosa is important in the Afromontane forestry landscape as a medicinal, rehabilitation, and conservation species. This study conducted desiccation and storage studies and their influence on the viability of E. cymosa seeds. The study sought to determine the optimum conditions for the storage of Ehretia cymosa that maintains viability. Results: This study observed that E. cymosa dried to seed moisture content of 6%, stored for 12 months at 20oC and sown in the laboratory had the highest germination performance (27.6 ± 3.18%) (p<0.05). Conclusion: This confirms that E.cymosa seeds exhibit orthodox storage behavior. The authors recommend longer storage studies (>12months) to determine the actual longevity of the seeds of this species. The significance of these results would be useful for foresters and farmers that would need to use this species for various purposes.

scholarly journals Assessing the storage potential of Australian rainforest seeds: a decision-making key to aid rapid conservation

2021 ◽  
Author(s):  
K. D. Sommerville ◽  
G. Errington ◽  
Z-J. Newby ◽  
G. S. Liyanage ◽  
C. A. Offord
Keyword(s):  
Decision Making ◽  
Logistic Regression ◽  
Dry Weight ◽  
Germination Percentage ◽  
Fleshy Fruit ◽  
Seed Moisture Content ◽  
Fresh Seed ◽  
Desiccation Sensitivity ◽  
Seed Moisture ◽  
Seed Characteristics

AbstractSeed banking of rainforest species is hindered by lack of knowledge as to which species are tolerant of desiccation and freezing. We assessed 313 Australian rainforest species for seed banking suitability by comparing the germination percentage of fresh seeds to seeds dried at 15% RH and seeds stored at −20 °C after drying. We then compared desiccation responses to environmental, habit, fruit and seed characteristics to identify the most useful predictors of desiccation sensitivity. Of 162 species with ≥ 50% initial germination, 22% were sensitive to desiccation, 64% were tolerant and 10% were partially tolerant; the responses of 4% were uncertain. Of 107 desiccation tolerant species tested for response to freezing, 24% were freezing sensitive or short-lived in storage at −20 °C. Median values for fresh seed moisture content (SMC), oven dry weight (DW) and the likelihood of desiccation sensitivity (PD-S) were significantly greater for desiccation sensitive than desiccation tolerant seeds. Ninety-four to 97% of seeds with SMC < 29%, DW < 20 mg or PD-S < 0.01 were desiccation tolerant. Ordinal logistic regression of desiccation response against environmental, habit, fruit and seed characteristics indicated that the likelihood of desiccation sensitivity was significantly increased by a tree habit, fleshy fruit, increasing fresh SMC and increasing PD-S. The responses observed in this study were combined with earlier studies to develop a simple decision key to aid prediction of desiccation responses in untested rainforest species.

scholarly journals THE EFFECT OF CORONA INCANDESCENT PLASMA RADIATION AND STORAGE TEMPERATURE ON THE VIABILITY OF GARLIC SEEDS (ALLIUM SATIVUM L. LUMBU KUNING VARIETY)

2021 ◽  
Vol 5 (1) ◽  
pp. 11-17
Author(s):  
Febiasasti Trias Nugraheni ◽  
Erma Prihastanti ◽  
Endah Dwi Hastuti
Keyword(s):  
Room Temperature ◽  
Allium Sativum ◽  
Storage Temperature ◽  
Germination Percentage ◽  
Plasma Radiation ◽  
Agricultural Commodity ◽  
Time Duration ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
And Storage

Garlic (Allium sativum L.) is an agricultural commodity which is widely consumed by the community. The obstacle experienced in cultivation is that a relatively long dormancy period of about 6-7 months. The dormancy of garlic seeds occurs because the embryo has not yet been fully formed, and the growth hormone and inhibitory hormone are not balanced. The methods used to break dormancy and accelerate germination are by using corona incandescent plasma radiation and storage temperature. The research utilized factorial Completely Randomized Design (CRD), consisting of six treatments with five replications. The first factor was the corona incandescent plasma radiation carried out on the garlic seeds ‘Lumbu Kuning’ variety with time duration of 0, 15, and 30 minutes. The second factor was storage temperature comprising of room temperature and cold temperature of 7oC stored for 30 days. Viability parameters observed are germination percentage dan the length of sprouts. The data were analyzed by using ANOVA followed by the DMRT test at the 95% confidence level. The results showed that corona incandescent plasma radiation influenced the germination percentage using plasma radiation for 15- 30 minutes.

scholarly journals Storage of seeds of Calamus palustris var. cochinchinensis

2020 ◽  
Vol 48 (2) ◽  
pp. 201-207
Author(s):  
Y.K. Fan ◽  
M. Liu ◽  
J.X. Hu ◽  
M.Y. Ji ◽  
Q.Y. Lan
Keyword(s):  
Moisture Content ◽  
Water Content ◽  
Storage Temperature ◽  
Aluminum Foil ◽  
Effect Of Temperature ◽  
Seed Moisture Content ◽  
Seed Desiccation ◽  
Seed Moisture ◽  
Mature Seeds

The present study examined the effect of temperature (15, 20, 25, 30 and 20/30°C) on germination and the storage behaviour of freshly harvested mature seeds of Calamus palustris var. cochinchinensis. Seed desiccation tolerance and the effects of storage temperature (4 and 15°C), perlite water content (120, 180 and 240%) and seed moisture content (27.8, 38.2 and 49.2%) on viability were observed. Seeds had a higher germination at 25°C (88.3%) than at the other tested temperatures. Germination decreased as the seed moisture content decreased during desiccation. The germination of seeds stored at 15°C was higher than that of seeds stored at 4°C. Germination of seeds stored at 15 and 4°C was <65% and with extension of storage time, the germination decreased, indicating that neither temperature can be used for long-term conservation. For short-term storage, the seeds can be stored at 15°C with perlite with 180% water content in plastic bottles or at 15°C with 49.2% moisture content sealed inside aluminum foil bags.

scholarly journals Pengaruh Media Dan Periode Simpan Terhadap Viabilitas Benih Cengkeh Tuni (Syzygium aromaticum L.)

2018 ◽  
Vol 14 (2) ◽  
pp. 97-104
Author(s):  
Marselina Noya ◽  
Johan Riry ◽  
Marthini Lesilolo
Keyword(s):  
Storage Time ◽  
Germination Rate ◽  
Storage Period ◽  
Germination Percentage ◽  
Syzygium Aromaticum ◽  
Storage Media ◽  
Randomized Design ◽  
Vigor Index ◽  
The Media ◽  
And Storage

This study aims to examine the influence of the media and the storage period on the viability of clove seeds. The study was conducted at the Ambon Plant Crops Protection and Protection Center laboratory. The study used a factorial completely randomized design with two types of factors and three replications. The storage media consists of 3 levels, namely: Without the storage media, the media for storing rice husk and the media for storing sawdust. The second factor is the storage period consists of 4 levels, namely: 10 days storage, 20 days storage, 30 days storage and 40 days storage. The parameters measured were germination power, germination rate, and vigor index. Storage media and storage period significantly affected germination and vigor indexes but did not significantly affect germination rates. The results showed that the sawdust storage media was a good medium for storing clove seeds (Syzygium aromaticum L.). This can be seen in the results of the average germination of clove seeds stored in powder storage media with a storage time of 10 days giving better results of 85% compared to rice husks at a storage time of 10 days with a germination percentage of 65%.  Keywords: clove seeds, save media, save period   ABSTRAK Penelitian ini bertujuan untuk menguji pengaruh media dan periode simpan terhadap viabilitas benih cengkeh. Penelitian dilaksanakan di laboratorium Balai Besar Perbenihan dan Proteksi Tanaman Perkebunan Ambon. Penelitian menggunakan rancangan acak lengkap pola faktorial dengan dua macam faktor dan tiga kali ulangan. Media simpan terdiri dari 3 taraf yaitu: Tanpa media simpan, media simpan sekam padi dan media simpan serbuk gergaji. Faktor kedua adalah periode simpan terdiri dari 4 taraf yaitu: penyimpanan 10 hari, penyimpanan 20 hari, penyimpanan 30 hari dan penyimpanan 40 hari. Parameter yang diukur adalah daya berkecambah, laju perkecambahan dan indeks vigor. Media simpan dan periode penyimpanan berpengaruh nyata pada persentase perkecambahan dan indeks vigor tetapi tidak berpengaruh nyata pada laju perkecambahan. Hasil penelitian menunjukan bahwa media simpan serbuk gergaji merupakan media yang baik bagi penyimpanan benih cengkeh (Syzygium aromaticum L.). Hal ini terlihat pada hasil rata-rata daya berkecambah benih cengkeh yang disimpan pada media simpan serbuk dengan lama penyimpanan selama 10 hari memberikan hasil yang lebih baik yakni 85% jika dibandingkan dengan sekam padi pada lama penyimpanan 10 hari dengan persentase perkecambahan 65%. Kata Kunci: benih cengkeh, media simpan, periode simpan

Sign in / Sign up

Export Citation Format

Share Document