Effect of short- and long-term exposure of seed tubers to low temperatures on the growth and yield of five potato cultivars

1988 ◽  
Vol 65 (2) ◽  
pp. 57-66 ◽  
Author(s):  
D. R. Lynch ◽  
R. H. Coffin
Keyword(s):  
Low Temperatures ◽  
Potato Cultivars ◽  
Growth And Yield ◽  
Seed Tubers ◽  
Short And Long Term

Chilling effects on primary photosynthetic processes in Medicago sativa: Acclimatory changes after short- and long-term exposure to low temperatures

Biologia ◽  
2020 ◽  
Vol 75 (8) ◽  
pp. 1105-1114
Author(s):  
Jaroslav Lang ◽  
Miloš Barták ◽  
Josef Hájek ◽  
Peter Váczi ◽  
Bára Zikmundová
Keyword(s):  
Medicago Sativa ◽  
Low Temperatures ◽  
Short And Long Term

scholarly journals Differential growth and yield responses of local potato cultivars from basic seed tubers

2021 ◽  
Vol 39 (3) ◽  
pp. 272-278
Author(s):  
Mónica Eliana Córdoba-Figueroa ◽  
Hernando Criollo-Escobar ◽  
Sandra Insuasty-Córdoba ◽  
Julián Fernando Mateus-Rodríguez
Keyword(s):  
Leaf Area ◽  
Growth Models ◽  
Block Design ◽  
Potato Cultivars ◽  
Growth And Yield ◽  
Growth Responses ◽  
Differential Growth ◽  
Area Index ◽  
Seed Tubers ◽  
Potato Growth

ABSTRACT Potato quality of seed tubers is a determinant factor that allows obtaining high yields, and its use must be a priority for a country or a producing region. Lack of information about how local cultivars perform differentially according to the environment has been identified in order to support potential seeds production programs. The research was carried out in 2018 at the Obonuco Research Center of Corporación Colombiana de Investigación Agropecuaria (AGROSAVIA), with the aim of analyzing the growth and yield of basic tuber seeds of five potato (Solanum tuberosum spp. andigena) cultivars. 1,080 seed tubers from each cultivar (treatments) were planted in a completely randomized block design and three replications. Mean comparison Tukey-Kramer (p≤0.05) test was performed for the yield analysis. From emergency to final harvest, destructive sampling was carried out every fifteen days in order to calculate dry matter and leaf area and establish growth models based on the accumulated degree-days (DD). The yield and proportion of seed tubers per plant were determined according to local resolution for seed certification in Colombia. Growth variables fitted better with the Hoerl, Gaussian, and third-degree polynomial models. The leaf area index of the potato cultivars reached the maximum value at 876 DD, with values ranging from 2.91 to 6.11 DD. The highest yield per plant was obtained by the Ica Única cultivar (2.73 kg plant-1). However, this cultivar showed the lowest percentage of seed tubers, with 50.59% compared to the others, which ranged between 80.82 and 87.40%. Differential potato growth responses through models based on the DD would explain the differences in final yield and seeds tuber production.

scholarly journals Effect of long-term storage at low temperature on storage losses and field performance of seed-potato cultivars.

1989 ◽  
Vol 37 (2) ◽  
pp. 169-172
Author(s):  
N. Buitelaar ◽  
R. Marcus ◽  
R. Wustman
Keyword(s):  
Tuber Yield ◽  
Chilling Injury ◽  
Field Performance ◽  
Potato Cultivars ◽  
Storage Losses ◽  
Seed Tubers ◽  
Long Term Storage ◽  
Size Grade ◽  
Field Emergence

The effects of 0, 5, 4, 3, 2 and 1 month storage at 0.5 degrees C on storage losses, field emergence and development, stem number/plant, tuber yield and size distribution of seed tubers of 12 potato cultivars were investigated. Cv. Ostara was very susceptible to chilling injury; Alpha, Bea, Draga and Jaerla were susceptible to a lesser extent. Storage losses of unaffected cultivars were low; storage losses of affected cultivars varied from 4.2% for cv. Alpha to 51.4% for cv. Ostara. Only visibly unaffected seed tubers were planted in the field. Field emergence of these was 99.8%. Five months at 0.5 degrees followed by presprouting of the seed increased stem numbers/plant and reduced total tuber yield, but decreased tuber yield in the size grade 28-35 mm. (Abstract retrieved from CAB Abstracts by CABI’s permission)

Short- and Long-Term Results of Total vs Subtotal Thyroid- ectomies in the Surgical Treatment of Graves' Disease

Swiss Surgery ◽  
2001 ◽  
Vol 7 (1) ◽  
pp. 20-24 ◽  
Author(s):  
Robert ◽  
Mariéthoz ◽  
Pache ◽  
Bertin ◽  
Caulfield ◽  
...  
Keyword(s):  
Recurrent Laryngeal Nerve ◽  
Nerve Palsy ◽  
Recurrent Laryngeal Nerve Palsy ◽  
Laryngeal Nerve ◽  
Long Term Results ◽  
Graves Disease ◽  
Laryngeal Nerve Palsy ◽  
Short And Long Term

Objective: Approximately one out of five patients with Graves' disease (GD) undergoes a thyroidectomy after a mean period of 18 months of medical treatment. This retrospective and non-randomized study from a teaching hospital compares short- and long-term results of total (TT) and subtotal thyroidectomies (ST) for this disease. Methods: From 1987 to 1997, 94 patients were operated for GD. Thirty-three patients underwent a TT (mostly since 1993) and 61 a ST (keeping 4 to 8 grams of thyroid tissue - mean 6 g). All patients had received propylthiouracil and/or neo-mercazole and were in a euthyroid state at the time of surgery; they also took potassium iodide (lugol) for ten days before surgery. Results: There were no deaths. Transient hypocalcemia (< 3 months) occurred in 32 patients (15 TT and 17 ST) and persistent hypocalcemia in 8 having had TT. Two patients developed transient recurrent laryngeal nerve palsy after ST (< 3 months). After a median follow-up period of seven years (1-15) with five patients lost to follow-up, 41 patients having had a ST are in a hypothyroid state (73%), thirteen are euthyroid (23%), and two suffered recurrent hyperthyroidism, requiring completion of thyroidectomy. All 33 patients having had TT - with follow-ups averaging two years (0.5-8) - are receiving thyroxin substitution. Conclusions: There were no instances of persistent recurrent laryngeal nerve palsy in either group, but persistent hypoparathyroidism occurred more frequently after TT. Long after ST, hypothyroidism developed in nearly three of four cases, whereas euthyroidy was maintained in only one-fourth; recurrent hyperthyroidy was rare.

Short- and long-term memory tasks predict working memory performance, and vice versa.

2019 ◽  
Vol 73 (2) ◽  
pp. 79-93 ◽  
Author(s):  
Ian Neath ◽  
Jean Saint-Aubin ◽  
Tamra J. Bireta ◽  
Andrew J. Gabel ◽  
Chelsea G. Hudson ◽  
...  
Keyword(s):  
Working Memory ◽  
Memory Performance ◽  
Long Term Memory ◽  
Term Memory ◽  
Short And Long Term
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