2 edition of Characterization and inheritance of low temperature germination dormancy of cucumber (Cucumis sativus L.) found in the catalog.
Characterization and inheritance of low temperature germination dormancy of cucumber (Cucumis sativus L.)
Douglas C. Plaisted
Written in English
|Statement||by Douglas C. Plaisted.|
|The Physical Object|
|Pagination||117 leaves, bound :|
|Number of Pages||117|
Effects of temperature and light on germination and early seedling development of the pine pink orchid (Bletia purpurea) psbi_ TIMOTHY R. JOHNSON and MICHAEL E. KANE Plant Restoration, Conservation and Propagation Biotechnology Laboratory, University of Florida, Department of Environmental Horticulture, Gainesville, Florida GrowGuide: Growing Cucumbers Seed Germination. There are two basic methods you can use to germinate your cucumber seeds: Germinate indoors in peat, paper or cowpots (most commonly used approach, but a little more work);; Germinate outdoors via direct seeding into your soil (very easy, but you don’t get yields until later in the season since you get a late start).
Keywords: dormancy gene DOG1, gibberellin metabolism, germination temperature, cell-wall remodelling, Lepidium sativum Abstract: Seed germination is an important life-cycle transition because it determines subsequent plant survival and reproductive success. To detect optimal spatiotemporal conditions for germination, seeds act as sophisticated. Applied aspects of the control of germination by seed dormancy - download PDF file KB Key words: abscisic acid, Arabidopsis thaliana, coat dormancy, dormancy classification, ecophysiology and modeling, embryo dormancy, endosperm weakening, gibberellin, physiological dormancy, seed after-ripening, seed dormancy, seed evolution, testa mutants.
This text is intended for plant physiologists, molecular biologists, biochemists, biotechnologists, geneticists, horticulturalists, agromnomists and botanists, and upper-level undergraduate and graduate students in these disciplines. It integrates advances in the diverse and rapidly-expanding field of seed science, from ecological and demographic aspects of seed production, dispersal and /5(2). Breaking Seed Dormancy in Tamarind 85 ABUBAKAR Z. A; AD Fig. II seeds treated with Sulphuric acid of 50% concentration. seeds treated with hot water. The hot water effect was carried out when tamarind seeds were put in beaker containing boiled water of.
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Non-dormant seeds that are exposed for some time to unfavourable germination conditions (imbibed seeds kept at relatively high temperature in darkness for example) may enter a state of dormancy again, which is called secondary dormancy (Cone and Spruit, ; Derkx and Karssen b; Hilhorst, ).A challenge in dormancy and germination research is to identify the nature of Cited by: There are different types of temperature pre-germination seed treatments, i.e.
by constant low temperature and daily alternating temperatures (daily temperature gradients and temperature drop). This review shows that temperature treatments affect cucumber seed germination and have long after-effects on subsequent plant growth and Size: KB.
dormancy is found in which the embryos themselves are dormant (embryo dormancy). Before considering some of the cellular and metabolic as- pects of dormancy, its breaking, and the resultant comple- tion of germination, it is worthwhile pondering why so little progress has Cited by: An environmental factor for breaking dormancy and germination is the temperature response of the species (Benech-Arnold et al.
; Geneve ). Many plants, including several weeds, have an. Dormancy, germination and viability of Salsola imbricata seeds in relation to light, temperature and salinity Article (PDF Available) in Seed Science and Technology 35(3) October Low temperature during imbibition promotes germination and although this is known to involve alterations to GA metabolism, again a mechanism is missing.
Therefore, the aim of this study was to identify components of the mechanisms which regulate the temperature control of dormancy and germination in the model plant Arabidopsis thaliana. The environmental regulation of seed dormancy and germination by temperature is an important process which allows the environmental conditions experienced by plants in the following generation to be controlled.
Coping with temperature effects during seed maturation is essential for the consistent production of high quality seeds, but currently temperature signalling pathways in seeds are. Germination is the process by which an organism grows from a seed or similar structure.
The most common example of germination is the sprouting of a seedling from a seed of an angiosperm or ation also includes the growth of a sporeling from a spore, such as the spores of Fungus, ferns, bacteria, and the growth of the pollen tube from the pollen grain of seed plants.
svp-3 showed a very similar phenotype to flc, with a reduced sensitivity to maternal low temperature experience, but retaining a partial response. In contrast, soc seed germination was similar to wild type. The lower dormancy of flc mutants contrasts with previous reports of low dormancy in high FLC-expressing near isogenic lines (NILs).
(4). This plant prefers to be propagated vegetatively. Both Treatments to break seed dormancy included: 1- untreated low germination rate and difficulty in cultivating this plant seed (control); 2- mechanical scarification (the seed coat using vegetative parts (such as problem in gathering and was sanded with a # 80 wood sandpaper at an area.
mum temperature for seed germination of most plant species lies between 65 and 80°F. Some species’ seeds germinate at temperatures as low as 32°F and others as high as °F. Seed dormancy is an unwanted trait for crops that require rapid and uniform germination after sowing.
During the domestication of most crop species low dormancy levels have been selected. This level has to be well balanced because very low dormancy can cause pre-harvest sprout-ing and reduce the quality of harvested seeds [3,4].
Seed germination and light. To investigate the effect of light on germination, seeds were incubated at a constant temperature of 25 °C, and exposed to alternating light (8 h dark and 16 h light) and continuous darkness in an environmentally controlled Labcon™ (V, 50 Hz) low.
The fourth edition of this well established text incorporates very wide-ranging revisions in the light of recent advances. It provides a comprehensive overview of the physiology, biochemistry & ecology of the process of seed germination.
Over one thirdof the material has been rewritten, references have been updated & new areas of interest stressed. The Effect of Increasing Temperature on Germination of Native Plant Species in the North Woods Region relationship between temperature, germination, and dormancy.
The aim of our Seeds were subjected to the high temperature for 14 hours a day and the low temperature for 10 hours a day. Rice germination time and intensity are substantially affected by temperature.
According to Livingston and Haasis (), a 90% germination rate of rice required an incubation period of 6 days at 25°C, 2 days at 31–36°C and an extended number of days at 0–5°C. Low temperatures prolong germination time. Leviatov, S., Shoseyev, O. and Wolf, S. () Involvement of endomannanase in the control of tomato seed germination under low temperature conditions, Ann.
1–6. Google Scholar Li, C. and Clarke, S. (a) Distribution of an L-isoaspartyl protein methyltransferase in eubacteria, BacterioL. Dormancy can be biologically described as: “The absence of germination of an intact, viable seed under germination favoring conditions with a specific time lapse” (Hilhorst, ).
There are different mechanisms and processes involved in seed dormancy. Baskin and Baskin () divided seed dormancy into five types. Effect of Stratification on Seed Germination and Seedling Development in Peach. An in vitro culture experiment was performed in order to characterize the response of peach embryos to different periods of cold stratification.
The early variables germination rate, defined as the rate of embryos showing an at least 2-mm long radicle, and shoot emergence were measured after 0, 1, 3, 7 and 9 weeks. The non-germinated seeds were considered to be induced into secondary dormancy. Thus, the seeds which ripened at a high temperature showed a comparatively deep secondary dormancy.
The effect of the temperature at the ripening stage on the wakening of secondary dormancy was also investigated by storing the seed for eight months at 30°C. Low temperature is probably one of the most common environmental stresses encountered during germination by summer crops sown early in the season (Blum, ).
For rice (Oryza sativa L.), temperatures lower than 20 °C decrease both the speed and percentage of germination (Yoshida, ) and result in lower crop stands and higher production costs.the close of a standard germination test as prescribed pursuant to ORS (1). Label requirements (a) the percentage of germination.
If germination data is based on tests other than sprouting, that shall be so stated on the label. _____ Germination = “ satisfactory sprouts” TZ = “viability” or “dormant” when germ.Studies of dormancy by plant physiologists have provided valuable knowledge on the mechanisms of seed dormancy initiation of germination.
“Dormancy mar be due to an immature embryo, impermeability of the seed coat to water or to gases, prevention of embryo development due to mechanical causes, special requirements for temperature or light, or.