scholarly journals Influence of Stock Plant Photoperiod on Cutting Production and Rooting

HortScience ◽  
1996 ◽  
Vol 31 (4) ◽  
pp. 597c-597
Author(s):  
Paul Koreman ◽  
Art Cameron ◽  
Royal Heins ◽  
William Carlson
Keyword(s):  
Cold Treatment ◽  
First Flush ◽  
Perennial Species ◽  
Stock Plant ◽  
Fresh Weight ◽  
Phlox Paniculata ◽  
Cutting Production ◽  
Total Fresh Weight

Five vegetatively propagated perennial species that received 0 or 15 weeks of cold treatment were placed under seven photoperiods (10-, 12-, 13-, 14-, 16-, 24-, and 4-hour night interruption). Cuttings were harvested every 3 weeks, and their number and total fresh weight were recorded. Cutting bases were dipped in a 1200 ppm IBA solution for 5 seconds, stuck in perlite, and placed under mist for 3 weeks. Results varied by species. Stock plants of Achillea `Moonshine' produced the most cuttings under a 12-hour photoperiod. Noncold treated Coreopsis verticillata `Moonbeam' only produced cuttings under photoperiods longer than or equal to 14 hours. Cold treated `Moonbeam' produced cuttings under all photoperiods in the first flush. Eighty percent of cuttings from the first flush of Phlox paniculata `Eva Cullum' rooted when taken from plants growing under the 10-hour photoperiod, but only 1.2 cuttings per plant were harvested; 2.5 cuttings per plant were taken from Phlox grown under the 24-h photoperiod, but only 20% rooted. Only stock plants of Sedum `Autumn Joy' receiving a 14-hour photoperiod produced significant numbers of vegetative shoots. Cutting production and rooting of Veronica `Sunny Border Blue' was not affected by photoperiod.

scholarly journals Effect of Stock Plant Photoperiod and Temperature on Cutting Production and Rooting of Herbaceous Perennials

HortScience ◽  
1997 ◽  
Vol 32 (3) ◽  
pp. 501E-501
Author(s):  
Paul Koreman ◽  
Art Cameron ◽  
Royal Heins ◽  
William Carlson
Keyword(s):  
Stock Plant ◽  
Herbaceous Perennials ◽  
Long Day ◽  
Phlox Paniculata ◽  
Short Days ◽  
Cutting Production

Previous research has shown that the photoperiod under which stock plants are grown has a significant effect on cutting production and rooting of several species of herbaceous perennials. Long-day (LD) treatment of stock plants promoted cutting production of certain LD perennials but reduced rooting. Cuttings from plants grown under short days rooted readily but few were produced. Stock plants were exposed to alternating photoperiods to determine if this treatment would yield many cuttings with high rooting potential. Coreopsis verticillata `Moonbeam' and Phlox paniculata `Eva Cullum' stock plants were given 4 weeks of 4-h night interruption (NI), while Sedum `Autumn Joy' stock plants were grown under 14-h days. After 4 weeks plants were given 0, 2, or 4 weeks of 10-h days. Cuttings were harvested and propagated under mist and three different photoperiods (10-h, 14-h, NI) for 4 weeks, after which rooting percentage and the number and length of roots produced by each cutting were measured. The results will be presented.

Influence of Planting Date on the Growth of Johnsongrass (Sorghum halepense) from Seed

Weed Science ◽  
1979 ◽  
Vol 27 (5) ◽  
pp. 554-558 ◽  
Author(s):  
P. E. Keeley ◽  
R. J. Thullen
Keyword(s):  
Seed Production ◽  
Planting Date ◽  
Sorghum Halepense ◽  
Viable Seed ◽  
Fresh Weight ◽  
Total Fresh Weight

Seed of johnsongrass [Sorghum halepense(L.) Pers.] were planted during 1976 and 1977 at monthly intervals from March through October to study the growth and reproductive habits of this weed at Shafter, California. Plants were grown for 12 weeks and harvested at 3-week intervals. Emergence and development of plants increased with temperature. April through August plantings yielded 10-to 20-fold as much total fresh weight as March and September plantings. After planting, rhizome production normally began in 3 to 6 weeks and seed production in 6 to 9 weeks. From the April through August plantings, rhizomes accounted for averages of 13, 25, and 40% of the total fresh weight of plants 6, 9, and 12 weeks after planting, respectively. This compared, respectively, with 16, 9, and 6% for roots and 70, 66, and 54% for shoots. Seedlings emerging in March produced rhizomes in early June and viable seed in late June. Seedlings emerging as late as September produced rhizomes and some viable seed before killing frosts in November.

scholarly journals Growth and Ginsenosides Content of Ginseng Sprouts According to LED-Based Light Quality Changes

Agronomy ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1979
Author(s):  
Yoon-Jeong Kim ◽  
Thi Kim Loan Nguyen ◽  
Myung-Min Oh
Keyword(s):  
Photosynthetic Rate ◽  
Dry Weight ◽  
Fresh Weight ◽  
Light Spectra ◽  
Fluorescent Lamps ◽  
Total Saponin ◽  
R Ratio ◽  
Saponin Content ◽  
One Year ◽  
Total Fresh Weight

This study investigated growth and ginsenosides content of ginseng sprouts under various light spectra. One-year-old ginseng seedlings were cultivated under various light treatments including: monochromatic (red (R), green (G), and blue (B)), various RB and RGB combinations, white (fluorescent lamps (FL) and natural white (NW)), and supplemental far red (FR). R and high R ratio increased growth characteristics of ginseng sprouts (excepted for root dry weight). The replacement of G for B in RGB group and W group did not increase the growth, and supplemental FR increased shoot and root fresh weights, total fresh weight, and leaf area. R had 1.5 times higher photosynthetic rate compared to B and G, and R8G1B1 and R9G1B0 showed the highest values in RGB group; whereas the RB, W, and FR groups did not enhance photosynthetic rate. B and high B ratio increased shoot saponin and ginsenosides, total saponin and ginsenosides contents. Total saponin content in shoot was 4.4 times higher than that in root. The supplemental FR enhanced both total saponin and ginsenosides contents. In conclusion, NW + FR showed the highest total fresh weight, saponin and ginsenosides contents among all treatments, suggesting that supplementation of FR has a positive effect on ginseng sprouts grown in plant factories.

scholarly journals Monosporic Inoculation of Economically Important Horticultural Species with Native Endomycorrhizae under Greenhouse Conditions

Agronomy ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 130
Author(s):  
Flor Hernandez ◽  
Rosalinda Villarreal ◽  
Valentin Torres ◽  
Adrien Gallou
Keyword(s):  
Mycorrhizal Fungi ◽  
Agricultural Intensification ◽  
Arbuscular Mycorrhizal ◽  
Dry Weight ◽  
Phosphorus Concentration ◽  
Root Weight ◽  
Fresh Weight ◽  
Flower Number ◽  
Total Dry Weight ◽  
Total Fresh Weight

Research into the symbiotic relationship between plants and arbuscular mycorrhizal fungi (AMF) is key for sustainable agricultural intensification. The objective of the present study is to evaluate native AMF at the monosporic level in greenhouse-grown, economically important crops. Agricultural soil samples from three locations (Saltillo, Zaragoza, and Parras) were obtained by combining portions resulting from a zigzag sampling pattern. From these samples, 15 morphotypes were extracted according to a modified Gerdemann’s technique and monosporically inoculated on melon, cucumber, tomato, and onion, 30 days after their sowing. Under a completely random experimental design, 16 treatments with three repetitions were defined. Plant height, root length, stem diameter, total fresh weight, fresh root weight, dry root weight, bulb weight, fresh leaf weight, total dry weight, flower number, leaf number, fruit number, spore number, and percentage of colonization were all evaluated. The results were subjected to the analysis of variance (ANOVA) and the Tukey comparison test (p ≤ 0.05), which showed that the monosporic inoculation favors significantly the AMF and the host, while the T6 (Saltillo spore + Steiner modified with 20% of the normal phosphorus concentration) showed a greater response uniformity on onion and melon, which indicates its great potential as an inoculum.

LIPIDS OF THE FEMALE REPRODUCTIVE ORGANS IN ASCARIS LUMBRICOIDES

1955 ◽  
Vol 33 (1) ◽  
pp. 31-37 ◽  
Author(s):  
Donald Fairbairn
Keyword(s):  
Ascaris Lumbricoides ◽  
Reproductive Organs ◽  
Major Constituent ◽  
Unsaponifiable Fraction ◽  
Fresh Weight ◽  
Total Body ◽  
Female Reproductive Organs ◽  
Total Fresh Weight ◽  
Hypothetical Structure ◽  
Sterol Mixture

The female reproductive organs of Ascaris lumbricoides represented one fifth of the total fresh weight and contained two thirds of the total body lipids. These lipids consisted of saponifiables (79%) and unsaponifiables (21%). Phospholipids of the lecithin–cephalin type were present, as well as an abundance of triglycerides. The latter contained unusually large amounts of C2—C0 saturated volatile acids among which acetic and hexanoic acids predominated. Ascaryl alcohol was the major constituent of the large unsaponifiable fraction, and on the basis of previous chemical analyses and of infrared spectra a hypothetical structure is proposed. A sterol mixture containing significant proportions of both saturated and unsaturated components was also isolated, but not identified further.

scholarly journals Assessment of Growth and Biomass Production of a Medicinal Plant Bryophyllum Salisb. as Influenced by Different Organic Manures

2020 ◽  
Vol 29 (2) ◽  
pp. 229-236
Author(s):  
AT Sharif ◽  
AS Razzaque ◽  
TT Purna ◽  
Md Khalilur Rahman
Keyword(s):  
Growth Performance ◽  
Biomass Production ◽  
Dry Weight ◽  
Bone Meal ◽  
Fresh Weight ◽  
Organic Manures ◽  
Total Dry Weight ◽  
Compost Treatment ◽  
Number Of Branches ◽  
Total Fresh Weight

A pot experiment was carried out to evaluate the influence of various organic manures on the growth performance and biomass production of Bryophyllum pinnatum. Nine kinds of organic manures, such as ACI, BGF-1, bone meal, Green life, Kazi, Majim, mustard cake, Payel and Shebok composts were applied individually at the rate of 15 ton/ha. Highest height (45.25 cm), leaf number (102.67 no./plant), leaf area (82.43 cm2/plant), number of branches (27.00 no./plant), girth (6.75 cm/plant), total fresh weight (334.02 g/plant) and total dry weight (86.09 g/plant) were recorded in mustard cake compost treatment at harvest. Results showed that the best growth performance and biomass production both were achieved by mustard cake compost treatment. Dhaka Univ. J. Biol. Sci. 29(2): 229-236, 2020 (July)

Effects of feeding varying levels of protein and phosphorus in relation to bone disorders in cattle

1975 ◽  
Vol 15 (74) ◽  
pp. 321 ◽  
Author(s):  
BD Siebert ◽  
DMR Newman ◽  
B Hart ◽  
GL Michell
Keyword(s):  
High Protein ◽  
Blood Levels ◽  
Fresh Weight ◽  
Treatment Groups ◽  
Low Protein ◽  
Metacarpal Bones ◽  
Protein Group ◽  
Calcium Phosphorus ◽  
Calcium And Phosphorus ◽  
Total Fresh Weight

Steers were fed low or high protein diets with varying levels of phosphorus. Two steers on the low protein diet developed a disorder which clinically resembled osteomalacia after 21 weeks of experimental feeding, and other animals on the same diet showed varying degrees of lameness. The total fresh weight, total mineral content, and the calcium and phosphorus levels of the metacarpal bones were significantly lower in the low protein group. Total fresh weight, total ash content of the rib bones was also lower although there were no differences between groups in the calcium and phosphorus content of rib bones. There were significant differences between treatment groups in blood levels of calcium, phosphorus and protein. The carcase weight of high protein animals was significantly greater than that of the low protein animals. Phosphorus level in the diet had little effect on any tissue measurement. The results showed that a bone disorder could develop in animals fed adequate phosphorus but inadequate protein. The implications of the experiment are considered in relation to the levels of protein and phosphorus in pasture throughout northern Australia.

scholarly journals Plant Growth Regulator Impacts on Vegetative Cutting Production of Moroccan Pincushion (Pterocephalus depressus) Plants

2021 ◽  
Vol 39 (2) ◽  
pp. 62-67
Author(s):  
Sean J. Markovic ◽  
James E. Klett
Keyword(s):  
Plant Growth ◽  
Gibberellic Acid ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Growth Index ◽  
Dry Weight ◽  
Stock Plant ◽  
Cutting Production

Abstract Moroccan pincushion (Pterocephalus depressus) is a drought-tolerant perennial that is being used in landscapes throughout arid areas of the western United States. This paper describes two experiments researching vegetative cutting production from stock plants. Moroccan pincushion stock plants received foliar applications of gibberellic acid (GA3), benzyladenine, ethephon, or auxin [indole-3-butyric acid (IBA)] plant growth regulators (PGR). Plant growth regulators were applied singularly and in combination with GA3 to determine efficacy on stock plant growth. A propagation study was conducted simultaneously to determine effects of these different PGR treatments applied to stock plants on the rooting of moroccan pincushion cuttings. The stock plant study showed GA3 + benzyladenine application increased cutting production over other PGR treatments. Fresh weight of moroccan pincushion cuttings did not differ among treatments. While cuttings did not differ in dry weight in experiment 1, statistical differences were observed in experiment 2. However, these differences in dry weight did not affect the quality of the cuttings. Cuttings from stock plants treated with GA3 + IBA treatment had the highest numerical growth index [(height + width + width)/3]. Cuttings from stock plants treated with GA3 alone or in combination with another PGR were all greater in average growth index and statistically differed from those without GA3 being applied. PGR treatments did not affect rooting percentages of the cuttings with nontreated stock plant cuttings successfully rooting at an average rate of 95%. However, GA3 + IBA was the only treatment where cuttings had 100% rooting for both experiments, indicating potential rooting benefits. Index words: Plant growth regulator, propagation, Pterocephalus depressus, vegetative cuttings. Species used in this study: Moroccan pincushion [Pterocephalus depressus Archibald]. Chemicals used in this study: gibberellic acid (GA3), benzyladenine, ethephon, indole-3-butyric acid (IBA).

scholarly journals The Effect of Dark Septate Endophytic Fungi on Mahonia oiwakensis

Plants ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 1723
Author(s):  
Lei-Chen Lin ◽  
Yin-Ling Tan ◽  
Wan-Rou Lin ◽  
Kuo-Lung Ku ◽  
Shang-Tse Ho
Keyword(s):  
Lung Cancer ◽  
Growth Response ◽  
Human Lung ◽  
Growth Promotion ◽  
Human Lung Cancer ◽  
Composition Analysis ◽  
Therapeutic Effects ◽  
Fresh Weight ◽  
Chemical Composition Analysis ◽  
Total Fresh Weight

This is the first study to discuss the effects of dark septate endophytes (DSE) on the growth promotion and berberine concentration in Mahonia oiwakensis, whose extract (MOE) has been suggested to have potential therapeutic effects against human lung cancer. First, as per phylogenetic analysis, the strains were divided into four groups: CkDB2, CkDB5, MoAL2 and MoAL5. All of these were DSEs, which could form microsclerotia in M. oiwakensis. The growth response experiment revealed that inoculation of the plant with MoAL5 and CkDB5 promoted an increase in the total fresh weight of the seedlings. Chemical composition analysis showed that seedlings inoculated with CkDB5 had the highest berberine concentration. These results showed that some DSEs have the ability to promote growth and induce phytochemical responses in the host plant.

scholarly journals Fertility Rate of Seacoast Marshelder Stock Plants Influences Cutting Production and Rooting Characteristics of Stem Cuttings

2008 ◽  
Vol 18 (3) ◽  
pp. 372-378
Author(s):  
Josiah Raymer ◽  
Mack Thetford ◽  
Debbie L. Miller
Keyword(s):  
Plant Growth ◽  
Growth Index ◽  
Plant Size ◽  
Fertility Rate ◽  
Stem Cuttings ◽  
Stock Plant ◽  
Coastal Species ◽  
Randomized Design ◽  
Reduced Height ◽  
Cutting Production

Seacoast marshelder (Iva imbricata) is an important coastal species contributing to building of foredunes along the Gulf of Mexico coastal regions. Hurricane activity disrupts natural regeneration, and the need for successful nursery production of sufficient plants for restoration warrants development of efficient propagation and production practices for restoration efforts. The objectives of these experiments were to investigate the effects of stock plant fertility on cutting production of seacoast marshelder and to evaluate the rooting qualities of cuttings harvested from hedged stock. Stock plants were established in 1-gal containers using a pine bark substrate amended with 6 lb/yard3 dolomitic limestone. Plants were fertilized with 15N–3.9P–10K controlled-release fertilizer (Osmocote Plus, 8- to 9-month formulation at 21 °C) applied as a top dressing at the recommended full label rate of 11 g per pot and 5.5, 15, and 21 g per pot (12 pots each) using a completely randomized design. Cuttings were collected and stock plants hedged on a regular interval [Expt. 1 (May to August) and Expt. 2 (August to November)]. Hedging of stock plants reduced height to 20 cm after each successive harvest of cuttings, but stock plant growth index increased with each successive harvest. Stock plant growth and cutting production increased as fertility rate increased, but responses were not consistent across harvest times. This trend was also true for rooting percentage and measures of root quality. Seacoast marshelder stock plant size increased as fertility increased to 15 g but not at 21 g. Inconsistencies in rooting responses across the production period were evident and were attributed to seasonal growth effects. An inverse relationship between rooting percentage and fertility rate was evident from May through July suggesting high levels of fertility should be avoided because rooting percentage, root number, and root length were reduced as fertility rate increased during that time. Conversely, higher fertilizer rates had a neutral to positive effect on rooting of seacoast marshelder during the months of August through November.

Sign in / Sign up

Export Citation Format

Share Document