48. Visions of the Good City in the Rapid Growth Period - André Sorensen

2016 ◽  
pp. 207-209
Author(s):  
Kären Wigen ◽  
Sugimoto Fumiko ◽  
Cary Karacas
Keyword(s):  
Rapid Growth ◽  
Growth Period

A comparative study of initiation and development of embryogenic callus from haploid embryos of several barley cultivars. I. Developmental state of embryo explants and callus potential

1987 ◽  
Vol 65 (1) ◽  
pp. 53-56 ◽  
Author(s):  
L. S. Kott ◽  
E. Kott ◽  
M. Howarth ◽  
K. J. Kasha
Keyword(s):  
Comparative Study ◽  
Rapid Growth ◽  
Embryogenic Callus ◽  
Growth Period ◽  
Developmental State ◽  
Root Initiation ◽  
Barley Cultivars ◽  
Haploid Embryos ◽  
Haploid Callus ◽  
Secondary Shoot

Six cultivars of barley (‘Akka’, ‘Bruce’, ‘Klages’, ‘Leger’, ‘Perth’, and ‘York’) were compared for their ability to produce haploid embryos competent to produce embryogenic haploid callus. The capacity to generate such callus from scutellar epidermal cells is different among these cultivars and appears to be correlated with the developmental state–age of the embryo and associated with a rapid growth period. Histological examination of 12-, 14-, and 16-day-old embryos confirmed the meristematic nature of the callus-initiating cells and produced results which correspond well with results obtained from cultures of other similar embryos. Variability among cultivars in embryo development, root initiation from callus, and primary and secondary shoot regeneration was also identified.

Control of Fruit Ripening in Peach, Prunus persica: Action of Succinic Acid-2,2-Dimethylhydrazide and (2-Chloroethyl)Phosphonic Acid

1974 ◽  
Vol 1 (1) ◽  
pp. 77 ◽  
Author(s):  
NE Looney ◽  
WB Mcglasson ◽  
BG Coombe
Keyword(s):  
Abscisic Acid ◽  
Succinic Acid ◽  
Phosphonic Acid ◽  
Rapid Growth ◽  
Ethylene Production ◽  
Prunus Persica ◽  
Physiological Activity ◽  
Growth Period ◽  
Stage Ii ◽  
Stage Iii

Fruits of Halehaven and Fragar peaches (mid- and late season respectively) were sampled and examined weekly during one complete growing season. The period of rapid growth following anthesis (stage I) was characterized by relatively high respiration and ethylene production rates. Fruits of both cultivars entered the subsequent period of slow growth (stage II) together. Ethylene production was low and respiration declined throughout stage II. Sprays of (2-chloroethyl)phosphonic acid (ethephon), but not succinic acid-2,2-dimethylhydrazide (SADH), resulted in increased ethylene evolution by stage II fruits. Neither chemical altered respiration or the duration of stage II. Both chemicals, however, advanced commercial harvest and promoted ripening of fruits sampled throughout the final rapid growth period (stage III). All fruits sampled during stage III showed a climacteric-like increase in respiration and ethylene production. The horticultural effectiveness of SADH and ethephon appears to be due to a promotion of physiological activity in stage III. Abscisic acid in peach pericarp increased just before and during stage III. Possible roles for abscisic acid and ethylene in regulating the stage II-stage III transition in peaches and other fruits are discussed.

Phenology of Salt Rabbitbrush (Chrysothamnus nauseosusssp.consimilis) and Greasewood (Sarcobatus vermiculatus)

Weed Science ◽  
1981 ◽  
Vol 29 (4) ◽  
pp. 448-454 ◽  
Author(s):  
Bruce A. Roundy ◽  
James A. Young ◽  
Raymond A. Evans
Keyword(s):  
Rapid Growth ◽  
Growth Period ◽  
Early Spring ◽  
Herbicide Application ◽  
Flower Buds ◽  
Sarcobatus Vermiculatus ◽  
Chrysothamnus Nauseosus ◽  
Simultaneous Control ◽  
Short Period ◽  
Phenoxy Herbicides

Salt rabbitbrush [Chrysothamnus nauseosus(Pallas) Britt., ssp.consimilis(Greene)] and greasewood [Sarcobatus vermiculatus(Hook.) Torr.] grow slowly in early spring until mid to late May. They then begin a period of rapid growth, at which time susceptibility to foliar herbicides is probably greatest. Greasewood ceases rapid growth in mid June to early July, but salt rabbitbrush continues to grow rapidly until early August. Greasewood that resprouts after herbicide application has a longer rapid-growth period than shrubs in an untreated stand. An average leader length of 4 cm indicates that rapid growth of salt rabbitbrush is underway, and first opening of the flower buds indicates that rapid growth is over. Appearance of greasewood staminate spikes indicates that rapid growth has begun, and the first appearance of dried spikes indicates that growth has ceased. Simultaneous control of these shrubs with a single application of phenoxy herbicides may only be possible during the relatively short period when both are growing rapidly. This period may only occur from late May to mid June in some stands and years, but may occur from mid May to early July in other cases.

Nutrition for kittens

2019 ◽  
Vol 10 (5) ◽  
pp. 250-256 ◽  
Author(s):  
Clare Hemmings
Keyword(s):  
Rapid Growth ◽  
Research Council ◽  
National Research Council ◽  
Growth Period ◽  
Nutritional Requirements

Nutritional requirements were set for dogs way back in 1971 by the National Research Council, with cats' needs going broadly unrecognised and certainly undifferentiated from those of dogs until 1986. However, the nutritional requirements of cats are very different from dogs in all stages of life, from pregnancy through lactation, their rapid growth period and throughout the remainder of their lives. This article looks in depth at each different stage of growth, noting some of the specific nutritional peculiarities of cats and provides important information to allow veterinary staff to make informed feeding recommendations to kitten owners.

A note on the growth of some micro-organisms in stored bovine colostrum

1972 ◽  
Vol 39 (2) ◽  
pp. 227-230 ◽  
Author(s):  
G. H. Palmer ◽  
A. J. Mudd
Keyword(s):  
Rapid Growth ◽  
Growth Period ◽  
Titratable Acidity ◽  
Bovine Colostrum ◽  
Micro Organisms ◽  
Indigenous Microflora

SummaryChanges in the microflora and titratable acidity of bovine colostrum stored at 4 and 30 °C were monitored for 21 days. Colostrum did not inhibit the indigenous microflora, and increased titratable acidity may have accounted for the observed decrease in the numbers of Enterobacteriaceae after an initial rapid growth period.

scholarly journals Response of Tall Fescue to Plant Growth Regulators and Mowing Frequencies

1993 ◽  
Vol 11 (4) ◽  
pp. 163-167 ◽  
Author(s):  
B. Jack Johnson
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Tall Fescue ◽  
Rapid Growth ◽  
Vegetative Growth ◽  
Growth Period ◽  
Early Spring ◽  
Acceptable Level ◽  
Turf Quality

Abstract Tall fescue (Festuca arundinace Schred.) produces rapid growth during a 6- to 8-week period in early spring. A field experiment was initiated on tall fescue to determine the number of mowings that can be eliminated by the use of plant growth regulators (PGRs) during this rapid growth period. Primo (CGA 163935) applied at 0.4 kg/ha (0.36 lb/A) mid-March suppressed vegetative growth for 3 to 5 weeks and eliminated 3 mowings during the first 5 weeks after treatment during 1990 and 1991 and eliminated 2 mowings during 1993. Primo (CGA 163935) applied at this rate did not reduce the quality and density of tall fescue below the acceptable level. Primo (CGA 163935) applied at 0.8 kg/ha (0.72 lb/A) eliminated 1 additional mowing during the 5 weeks after treatment in 2 of 3 years when compared with the 0.4 kg/ha (0.36 lb/A) rate. However, turf quality was consistently lower for 6 to 7 weeks after the tall fescue was treated with the 0.8 kg/ha (0.72 lb/A) rate. Embark (mefluidide) applied at 0.42 kg/ha (0.38 lb/A) performed similarly to Primo (CGA 163935), except the quality and density of the turf were reduced below the acceptable level at various times during the study. There was no advantage in the use of Cutless (flurprimidol) plus Embark (mefluidide) at 1.1 + 0.14 kg/ha (1.0 + 0.12 lb/A) or paclobutrazole (PP 333) plus Embark (mefluidide) at 1.1 + 0.14 kg/ha (1.0 + 0.12 lb/A) on suppressing vegetative growth of tall fescue when compared with Embark (mefluidide) at 0.42 kg/ha (0.38 lb/A) alone. Neither Limit (amidochlor) at 2.8 kg/ha (2.5 lb/A) nor paclobutrazol (PP 333) at 1.1 kg/ha (1.0 lb/A) suppressed vegetative growth as effectively as Primo (CGA 163935) or Embark (mefluidide).

scholarly journals The morphological changes of intestinal mucosa in growing rabbits

1997 ◽  
Vol 31 (3) ◽  
pp. 254-263 ◽  
Author(s):  
Bi Yu ◽  
Peter W. S. Chiou
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Digestive Tract ◽  
Intestinal Mucosa ◽  
Rapid Growth ◽  
Morphological Changes ◽  
Growth Period ◽  
Suckling Period ◽  
Small Intestinal ◽  
Intestinal Weight

The study aimed to increase understanding of digestive function from the development of the digestive tract from suckling to maturity in rabbits. The relative weights of the digestive tract (in relation to body weight) in different segments increase linearly during the rapid growth period between 2 and 8 weeks of age; thereafter intestinal weight gain is slower. An underdeveloped mucosal histology was observed in the hindgut of suckling rabbits at 2 weeks compared with 4 weeks of age. From SEM micrographs, the small intestinal mucosal villi look more slender and finger-like in the suckling period, thereafter becoming broader or tongue-like or plate-shaped in mature rabbits. The micrographs showed a compact arrangement in the underdeveloped hindgut mucosa at 2 weeks, but after weaning as hindgut fermentation becomes significant the mucosa increased in surface area.

scholarly journals Epidemiological Characteristics and Transmissibility of Human Immunodeficiency Virus in Nanning City, China, 2001–2020

2021 ◽  
Vol 9 ◽  
Author(s):  
Qian Lin ◽  
Bin Deng ◽  
Jia Rui ◽  
Song-Bai Guo ◽  
Qingqing Hu ◽  
...  
Keyword(s):  
Human Immunodeficiency Virus ◽  
High Risk ◽  
Rapid Growth ◽  
Slow Growth ◽  
Rna Virus ◽  
Growth Period ◽  
Control Measures ◽  
Immunodeficiency Virus ◽  
Epidemiological Characteristics ◽  
Nanning City

Background: Human immunodeficiency virus (HIV) is a single-stranded RNA virus that can weaken the body's cellular and humoral immunity and is a serious disease without specific drug management and vaccine. This study aimed to evaluate the epidemiologic characteristics and transmissibility of HIV.Methods: Data on HIV follow-up were collected in Nanning City, Guangxi Zhuang Autonomous, China. An HIV transmission dynamics model was built to simulate the transmission of HIV and estimate its transmissibility by comparing the effective reproduction number (Reff) at different stages: the rapid growth period from January 2001 to March 2005, slow growth period from April 2005 to April 2011, and the plateau from May 2011 to December 2019 of HIV in Nanning City.Results: High-risk areas of HIV prevalence in Nanning City were mainly concentrated in suburbs. Furthermore, high-risk groups were those of older age, with lower income, and lower education levels. The Reff in each stage (rapid growth, slow growth, and plateau) were 2.74, 1.62, and 1.15, respectively, which suggests the transmissibility of HIV in Nanning City has declined and prevention and control measures have achieved significant results.Conclusion: Over the past 20 years, the HIV incidence in Nanning has remained at a relatively high level, but its development trend has been curbed. Transmissibility was reduced from 2.74 to 1.15. Therefore, the prevention and treatment measures in Nanning City have achieved significant improvement.

Influence of water stress on yield and quality of flue-cured tobacco

1978 ◽  
Vol 18 (94) ◽  
pp. 726 ◽  
Author(s):  
P McNee ◽  
LA Warrell ◽  
EWBvan den Muyzenberg
Keyword(s):  
Soil Moisture ◽  
Water Stress ◽  
Rapid Growth ◽  
Growth Period ◽  
Field Capacity ◽  
Control Treatment ◽  
Leaf Quality ◽  
Yield And Quality ◽  
Influence Of Water ◽  
Quality Water

In a field experiment with tobacco the effect of water stress at each of four times during the period of rapid growth following establishment was compared with an unstressed control. Water stress as a result of withholding irrigation was applied prior to 'budding', at 'budding', at 'early flower', and at 'full flower'. The soil moisture of the control treatment was maintained above 60 per cent of the soil moisture held at field capacity. The stress treatments ranged from 7 to 14 days and at the recommencement of irrigation the soil moisture ranged from 30-50 per cent of the soil water held at field capacity. All stress treatments were completed prior to the occurrence of either sunburn or permanent wilting. No water stress treatment applied to tobacco during the period of rapid growth following establishment improved yield or leaf quality. Depending on the timing, water stress during this growth period was shown to be detrimental to leaf yield and quality. Water stress at 'budding' reduced the harvested leaf area and cured leaf yields. Water stress during the flowering period resulted in an 'off type', 'immature' cured leaf of reduced commercial value.

Sign in / Sign up

Export Citation Format

Share Document