scholarly journals Improving Seedling Vigor in Sexual Seeds of Potato Under High Temperature

HortScience ◽  
1991 ◽  
Vol 26 (3) ◽  
pp. 296-299 ◽  
Author(s):  
Noël E. Pallais ◽  
Nelly Y. Espinola ◽  
Rosario M. Falcon ◽  
Ruperto S. Garcia
Keyword(s):  
High Temperature ◽  
Warm Season ◽  
Seed Storage ◽  
Dry Weight ◽  
Seed Priming ◽  
The Other ◽  
Potato Seed ◽  
True Potato Seed ◽  
Seedling Vigor ◽  
Factor B

Sexual seeds of potato (Solanum tuberosum L.) usually emerge poorly under high-temperature conditions (> 25 C). A seedling vigor study was conducted during the warm season (1988-89) in Lima, Peru, and the results of two representative tests. are reported. Two presowing treatments and a rinsed control were compared for seedlingstand establishment in a screenhouse with old (>18 months) and new (> 6 months) sexual seeds of three potato crosses. The treatments consisted of soaking the seed in solutions of KN03 + K3P04 at – 1.0 MPa (priming) and gibberellic acid at 1500 ppm (GA1500). Seedling vigor was lower at 34C (February test) than at 29C (November test). In both tests, overall seedling performance was highest in seed of the cross Atlantic × LT-7. Old seed was more vigorous than new seed, particularly when the crosses Atzimba × R128.6 (B2) and Serrana × LT-7 (Cl) were tested at 34C. Priming increased percentage of early (10 days) emergence over the other treatments at 34C and increased seedling dry weight in both tests. GA1500 increased percentage of final (17 days) emergence in crosses B2 and Cl, as compared to rinsing, except at 29C, where there were no significant differences in old seed. For sowing true potato seed at high temperature, a) the genotype is a crucial factor, b) sufficient seed storage (> 18 months) may be essential, and c) seed priming is more effective than the standard GA1500 treatment.

scholarly journals Hybrid true seed production from potato mother plant as influenced by nitrogen splitting and boron

2020 ◽  
Vol 93 (1) ◽  
Author(s):  
Rajesh Chakraborty ◽  
Shahidul Islam ◽  
Tuhin Suvra Roy
Keyword(s):  
Seed Production ◽  
Maximum Yield ◽  
Potato Seed ◽  
True Potato Seed ◽  
Split Application ◽  
Maximum Weight ◽  
Factor B ◽  
True Seed ◽  
Two Factors ◽  
Plot Design

Experiments were conducted to show the effect of split application of nitrogen (SN) and boron (B) on hybrid True Potato Seed (TPS) production. The TPS-67 (♂) and MF-II (♀) were used as crossing materials. The experiments comprised two factors i.e., factor-A; nitrogen splitting (4 levels): 2 split (SN0-Conventional), 3 split (SN1), 4 split (SN2) and 5 split (SN3) where 50 kg N ha–1 applied as basal from total 300 kg N ha–1 with each split application and the rest 250 kg N ha–1 was splitted as per treatment at 10 days intervals started from 30 DAP (days after planting); and factor- B; boron (4 levels): 0 (B0), 4 (B1), 6 (B2) and 8 (B3) kg B ha–1 under split-plot design with three replications. We found that SN and/or B influenced the hybrid TPS production. The maximum yield (2160.1 mg) of TPS plant–1 was found from SN1B3 and the minimum (1001.8 mg) was in SN0B0. The maximum yield (172.81 kg) of TPS ha–1 was found from SN1B3 and the minimum (80.14 kg) was in SN0B0. The maximum weight (86.87 mg) of 100-TPS was found from SN3B3; whereas, the minimum (53.36 mg) was in SN0B0.

scholarly journals Priming Benih Padi (Oryza sativa L.) dengan Zn untuk Meningkatkan Vigor Bibit pada Cekaman Terendam

2016 ◽  
Vol 44 (1) ◽  
pp. 8
Author(s):  
Sulaiman Sulaiman ◽  
Rujito Agus Suwignyo ◽  
Mery Hasmeda ◽  
Andi Wijaya
Keyword(s):  
Oryza Sativa L ◽  
Block Design ◽  
Dry Weight ◽  
Seed Priming ◽  
Rice Seed ◽  
Seedling Vigor ◽  
Randomized Block Design ◽  
Submergence Stress ◽  
Soil Media ◽  
Rice Genotypes

<br />Seed priming has been widely used to improve seedling vigor of several crops  such as corn, wheat, and rice. Seed priming with zinc to increase seedling tolerance on submergence stress had never been evaluated. The objective of this research was to identify agronomical and physiological characteristics of several rice genotypes during seedling stage at submergence stress following zinc priming treatment. This research used factorial randomized block design with three replications. The first factor was rice genotypes and second factor was zinc solution of ZnSO4.7H2O. Seeds were soaked with Zn solution at different concentrations namely 0, 2.5, dan 5.0 mM respectively for 24 hours. After that the seeds were germinated on soil media in side the plastic box. Fourteen days-old seedling were submerged in water for 5 days and then return to normal condition for recovery. Parameters being observed included seedling dry weight, shoot carbohydrate, and leaves chlorophyl which were measured after 10 days of recovery. Seedling height was measured once a week from 2nd to 4th week. Results showed that intolerant genotypes to submergence stress grew faster but seedling dry weight, shoot carbohydrate and leaves chlorophyll content were lower compared to those tolerant genotypes. Local and national varieties which were not tolerant to submergence stress could be improved by priming treatment with 5.0mM zinc.<br /><br />Keywords: abiotic-stress, seeds- priming <br /><br />

scholarly journals STORAGE OF TRUE POTATO SEED

HortScience ◽  
1992 ◽  
Vol 27 (6) ◽  
pp. 577c-577
Author(s):  
Noël Pallais
Keyword(s):  
Moisture Content ◽  
Seed Dormancy ◽  
Potato Seed ◽  
True Potato Seed ◽  
Seedling Vigor ◽  
High Moisture ◽  
Seed Moisture Content ◽  
Moisture Contents ◽  
Seed Moisture

True potato seed of Atzimba × 104.12LB (intermediate dormancy) was dried to seed moisture contents ranging from 3.85 to 12.5% (dry wt basis) and was stored for 2 years at 30, 15 and 5°C. Seed was tested for various germination and seedling vigor criteria at 4 month intervals. Seed dormancy and viability were better preserved at seed moisture levels below 7% and as temperature decreased. High moisture (>9%) was lethal to seed stored at 30°C. TPS should be stored at <5% seed moisture content. Under this condition seed dormancy in the genotype studied was lost after about 12 months at 30°C.

scholarly journals Seed Priming Significantly Affects Germination and Post Germination Early Seedling Growth in Okra

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Rima Rima
Keyword(s):  
Root Length ◽  
Dry Weight ◽  
Seed Priming ◽  
Germination Percentage ◽  
Shoot Length ◽  
Seedling Height ◽  
Seedling Vigor ◽  
Commercial Cultivation ◽  
Early Seedling Growth ◽  
Early Seedling

AbstractSeed priming significantly affects germination and post germination emergence in seedling of plants. Okra is an important vegetable plays significant role in human nutrition. However, little information is available regarding effect of seed priming on germination and post germination early vegetative growth. Therefore, a pot experiment was conducted to find out the effect of seed priming on the emergence and seedling vigor in different okra varieties. Six local Bangladeshi okra varieties were primed in water for 24 hours and evaluated their germination and post germination emergence. The varieties were named as V1-V6 (V1 = Flash power, V2 = Durga, V3 = BARI dheros-2, V4 =Okra pornota, V5 =Dandy all green, V6 = Boishakhi). Post priming evaluation was done based on germination percentage, root-shoot length of seedlings, seedling height, and dry weight of seedlings, germination index and speed of germination at different days after sowing (5-15 DAS). Highest germination was observed in V3 (88.00%) and lowest was in V5 (25.33%). Root length was highest in V3 and V4 (8.77cm) and lowest was observed in V2 (5.15cm). Shoot length of the seedlings was highest in V3 (7.94cm) followed by V1 (7.33). Shoot length of the seedlings was lowest in V5 (5.12cm). Seedling height was highest in V3 (16.71cm) which was followed by V6 (16.26cm). The lowest seedling height was observed in V1 (12.50cm). Dry weight of the seedlings was highest in V3 (2.32g) which was followed in V1 (2.26g). The lowest dry weight was observed in V5 (1.99g). The variety V3 performed better in most of the evaluated parameters and suggested for commercial cultivation.

scholarly journals Storage of Flowering Dogwood (C. florida) Seed

HortScience ◽  
2004 ◽  
Vol 39 (4) ◽  
pp. 786D-787
Author(s):  
Sandra Reed*
Keyword(s):  
Seed Set ◽  
Control Sample ◽  
Seed Storage ◽  
Germination Percentage ◽  
The Other ◽  
Seedling Vigor ◽  
Germplasm Preservation ◽  
Flowering Dogwood ◽  
Reliable Source ◽  
Percent Germination

Flowering dogwood (Cornus florida) is a popular flowering tree that is a mainstay of the southeastern U.S. nursery industry. Because cultivars of this species are primarily propagated through budding onto seed-propagated rootstock, a reliable source of seeds is needed. Disease- and weather-related problems may sometimes result in a shortage of dogwood seed. The objective of this study was to develop a method of storing dogwood seed that would allow growers to save seed during years in which good flowering and seed set occur for use when insufficient seed is available. Open-pollinated seeds were collected in Fall 1999, dried to 6%, 10%, and 14% moisture, and stored at -20, 5, and 22 °C. After 1, 2 and 3 years of storage, seed was stratified for 3 months and then planted in the greenhouse. Percent germination was compared to that of a subsample of the seed lot that had been stratified and planted following collection in Fall 1999. After 1 year in storage, seed dried to 10% and 14% moisture and stored at 22 °C failed to germinate; germination of the other samples ranged from 55% to 97% of that of the control sample. After 2 or 3 years in storage, all seed stored at 22 °C and the seed dried to 14% moisture and stored at 5 °C failed to germinate. Germination of the remaining samples ranged from 76% to 97% of the control in year 2, and from 72% to 109% in year 3. After 3 years in storage, seed dried to 6% moisture and stored at 5 °C and seed dried to 10% moisture and stored at -20 °C had the highest germination percentage and best seedling vigor. Development of a seed storage method for dogwood will benefit both dogwood producers and germplasm preservation efforts.

scholarly journals Effect of salicylic acid seed priming on resistance to high levels of cadmium in lettuce (Lactuca sativa L.)

2018 ◽  
Vol 2 (2) ◽  
pp. 67
Author(s):  
Melisa Šabanović ◽  
Adisa Parić ◽  
Mirela Briga ◽  
Erna Karalija
Keyword(s):  
Salicylic Acid ◽  
Germination Rate ◽  
Cadmium Toxicity ◽  
Dry Weight ◽  
Seed Priming ◽  
The Other ◽  
Cadmium Tolerance ◽  
Cd Toxicity ◽  
Tolerance Level ◽  
Lactuca Sativa L

Cadmium (Cd) is abundant heavy metal with highly toxic effect on plants. The aim of presented study was to investigate the effect of seed priming using salicylic acid on cadmium tolerance in lettuce. The tolerance level was evaluated using germination speed and percentage, fresh and dry seedling weight, water and photosynthetic pigments content. Control seeds were primed using distilled water. In control plants cadmium induced reduction of germination rate, fresh and dry weight, water and chlorophyll content. Seed priming using salicylic acid, on the other hand, induced increased resistance of lettuce to cadmium toxicity. Increase in germination rate, fresh mass and water content were recorded for plants subjected to 5 mM Cd, grown from seeds primed using salicylic acid. Results obtained by this study suggested that salicylic acid can be used as priming agent in order to alleviate Cd toxicity on lettuce.

Comparative effects of gibberellic acid, kinetin and salicylic acid on emergence, seedling growth and the antioxidant defence system of sweet sorghum (Sorghum bicolor) under salinity and temperature stresses

2015 ◽  
Vol 66 (2) ◽  
pp. 145 ◽  
Author(s):  
Nimir Eltyb Ahmed Nimir ◽  
Shiyuan Lu ◽  
Guisheng Zhou ◽  
Wenshan Guo ◽  
Baoluo Ma ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
High Temperature ◽  
Seedling Growth ◽  
Sweet Sorghum ◽  
Dry Weight ◽  
Seed Priming ◽  
Antioxidant Defence ◽  
Defence System ◽  
Antioxidant Defence System ◽  
Emergence Percentage

Salinity and high temperature are major abiotic stresses limiting sustainable crop production. Seed priming is a useful tool to enhance seedling growth and the antioxidant defence system of crops under salinity and temperature stress. This experiment was designed to determine the effects of gibberellic acid (GA3, 288.7 µm), kinetin (232.2 µm) and salicylic acid (362 µm) on some morphological and physiological parameters of sweet sorghum (Sorghum bicolor L. Moench) hybrid Yajin 13 under salinity (0, 100 and 200 mm NaCl) and temperature (25°C and 37°C) stress. Salinity and high temperature significantly reduced emergence percentage, shoot and root lengths, number of leaves, shoot fresh and dry weight, and chlorophyll a and b content. The activity of superoxide dismutase (SOD) and malondialdehyde (MDA) content were increased with an increase in both salinity and temperature stress. Hormone treatments positively affected all parameters except root fresh and dry weight, number of leaves, SOD activity and chlorophyll a. Under salinity stress at 200 mm NaCl, treatment with salicylic acid increased emergence percentage, emergence rate, chlorophyll b and protein content by 82.0%, 130%, 7.9% and 1.9%, respectively, relative to the control (no treatment). At 37°C, salicylic acid increased emergence percentage, emergence rate and number of roots by 72.5%, 108.5% and 63.8%, respectively, and decreased MDA content by 17.6% relative to the control. Our study indicated that seed priming with an appropriate concentration of exogenous hormones (salicylic acid, kinetin, GA3) is a useful, easy method for improving germination, seedling growth and the antioxidant defence system of sweet sorghum under conditions of high temperature and salinity.

scholarly journals Influence of antioxidants and salinity stress on seedling parameters of some rice cultivars

2019 ◽  
pp. 15-21
Author(s):  
A. A. Kandil, A.E. Sharief ◽  
Fatma M. Abd EL-Fatah
Keyword(s):  
Humic Acid ◽  
Salinity Stress ◽  
Dry Weight ◽  
Seed Priming ◽  
Seedling Height ◽  
Seedling Vigor ◽  
Rice Cultivars ◽  
Shoot Height ◽  
Height Reduction ◽  
Vigor Index

An investigation was conducted to study the response of antioxidants seed priming on rice cultivars and their effect on germination under salinity levels. The result indicated that the highest in shoot height (cm), root height (cm), seedling vigor index, and other related parameters, relative dry weight% were produced from Sakha 106 cultivar. The lowest seedling height reduction % was produced from Sakha 106 cultivar. An enhancement in salt concentration resulted a reduction in all studied parameters except seedling height reduction %. The results indicated the highest  shoot height (cm), root height (cm),seedling vigor index, shoot fresh and dry weight (mg), root fresh and dry weight (mg), relative dry weight% and seedling height reduction % from which soaking, as pretreatment, in Humic acid at 500ppm. The interactions between cultivars, salinity concentration and antioxidants were insignificant on some traits. It could be concluded that to improve seedling parameters of rice cultivars under salinity stress; it could be recommended that soaking Sakha 106 cultivar seed in Humic acid at 500 ppm for 24 h. It can be used in breeding program to boost production in Egyptian territory.

scholarly journals Osmo and Hydro Priming Mediated Germination Improvement Under Cold Stress Conditions in Mountain Rye (Secale Montanum)

2012 ◽  
Vol 45 (3) ◽  
pp. 53-62 ◽  
Author(s):  
O. Ansari ◽  
F. Sharif Zadeh
Keyword(s):  
Cold Stress ◽  
Dry Weight ◽  
Seed Priming ◽  
Germination Percentage ◽  
Seedling Vigor ◽  
Vigor Index ◽  
Seedling Length ◽  
Normal Seedling ◽  
Temperature Time ◽  
Secale Montanum

Abstract Seed priming techniques have been used to increase germination, improve germination uniformity and seedling establishment under stressed conditions. Seed priming was used in rye mountain (Secale montanum) to increase seed germination and tolerance on stress exposure (Cold stress). Rye seeds were treated with water (Hydro priming) and polyetelyn glycol 6000 (Osmo priming). The effect of priming was assessed on germination characteristics under cold stress (at 3°C) for 7 days. Analyze of variance for hydro priming showed that temperature × time of priming interaction was significantly (P < 0.01) for all traits under cold stress and for osmo priming showed that Concentration of PEG × Temperature × Time of priming interaction was significantly (P < 0.01) for all traits under cold stress except seedling dry weight (SDW). For hydro priming the highest germination percentage (GP) was attained from hydro priming at 15±1°C for 16 h (70%), whereas the highest normal seedling percentage (NSP) (22.5%), germination index (GI) (8.57), seedling vigor index (SVI) (38.9) and seedling length (SL) (1.7 cm) were in the hydro priming at 10±1°C for 16 h. For osmo priming the highest germination percentage (GP) (80 and 80.5%), normal seedling percentage (NSP) (48 and 45%), seedling vigor index (SVI) (101.26 and 85.25) and seedling length (SL) (2.11 and 1.89 cm) observed in the osmo priming with concentrations of -9 and -15 bar PEG at 15±1°C for 24 h.

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