scholarly journals Estimation of the efficiency of rooting varieties of Berberis Thunbergia DC. by the method of green shearing

2021 ◽  
Vol 5 (47) ◽  
pp. 22-22
Author(s):  
Maxim Simakhin ◽  
Yulia Dotsenko ◽  
Tatiana Aniskina ◽  
Vitaly Donskikh ◽  
Inna Zubik ◽  
...  
Keyword(s):  
Analysis Of Variance ◽  
Butyric Acid ◽  
Root Length ◽  
Root Formation ◽  
Total Root Length ◽  
Berberis Thunbergii ◽  
Total Length ◽  
Rooting Of Cuttings ◽  
Positive Effect ◽  
Three Factor

In this work, the results of evaluating the differences in the variants of the three-factor experiment on rooting of varieties of Barberry Thunberg (Berberis thunbergii DC.) By factors: varietal characteristics, the number of nodes and the use of a root formation regulator are considered. The study involved cuttings of the following varieties: ‘Dart’s Red Lädy’, ‘Kobold’, ‘Golden Ring’, ‘Harlequin’, ‘Rosetta’, ‘Red Chief’ and ‘Aurea’. 4- (indol-3-yl) butyric acid (trademark "Kornevin") was used as a root formation stimulator by the method of dusting. The green cuttings had 2 and 3 knots. The results of analysis of variance on the variability of the average total root length in green cuttings depending on varietal characteristics, dusting with a root formation stimulator and the number of nodes made it possible to establish that the ‘Red Chief’ variety had the maximum average total root length and was significantly different from all other varieties. The average total length of roots when using a root formation stimulator is significantly higher than in the control variant. Cuttings with three nodes reliably had a large average total root length. Based on the results obtained, it is assumed that the use of a root formation stimulator and rooting of cuttings with three nodes has a positive effect on the rooting processes of barberry cuttings. Keywords: BERBERIS THUNBERGII, THUNBERG BARBERRY, GREEN CUTTINGS, 4- (INDOL-3-YL) BUTYRIC ACID, KORNEVIN, KNOTS

scholarly journals Rooting of Rose Cuttings in Response to Foliar Applications of Auxin and Surfactant

2004 ◽  
Vol 14 (4) ◽  
pp. 479-483 ◽  
Author(s):  
Eugene K. Blythe ◽  
Jeff L. Sibley ◽  
Ken M. Tilt ◽  
John M. Ruter
Keyword(s):  
Butyric Acid ◽  
Root Length ◽  
Potassium Salt ◽  
Foliar Application ◽  
Foliar Spray ◽  
Shoot Length ◽  
Naphthaleneacetic Acid ◽  
Total Root Length ◽  
Spray Application ◽  
Negative Effects

In five experiments, singlenode cuttings of `Red Cascade' miniature rose (Rosa) were treated with a basal quick-dip (prior to insertion into the rooting substrate) or sprayed to the drip point with a single foliar application (after insertion) of Dip `N Grow [indole-3-butyric acid (IBA) + 1-naphthaleneacetic acid (NAA)], the potassium salt of indole-3-butyric acid (K-IBA), or the potassium salt of 1-naphthaleneacetic acid (K-NAA); a single foliar spray application of Dip `N Grow with and without Kinetic surfactant; or multiple foliar spray applications of Dip `N Grow. Spray treatments were compared with their respective basal quick-dip controls {4920.4 μm [1000 mg·L-1 (ppm)] IBA + 2685.2 μm (500 mg·L-1) NAA, 4144.2 μm (1000 mg·L-1) K-IBA, or 4458.3 μm (1000 mg·L-1) K-NAA}. Cuttings sprayed with 0 to 246.0 μm (50 mg·L-1) IBA + 134.3 μm (25 mg·L-1) NAA, 0 to 207.2 μm (50 mg·L-1) K-IBA, or 0 to 222.9 μm (50 mg·L-1) K-NAA resulted in rooting percentages, total root length, percent rooted cuttings with shoots, and shoot length similar to or less than control cuttings. Exceptions were cuttings sprayed with 0 to 2.23 μm(0.5 mg·L-1) K-NAA, which exhibited shoot length greater than the control cuttings. Addition of 1.0 mL·L-1 (1000 ppm) Kinetic organosilicone surfactant to spray treatments resulted in greater total root length and shoot length. Repeated sprays (daily up to seven consecutive days) had no or negative effects on root and shoot development.

scholarly journals Vegetative propagation of Plukenetia polyadenia by cuttings: effects of leaf area and indole-3-butyric acid concentration

2016 ◽  
Vol 77 (3) ◽  
pp. 580-584 ◽  
Author(s):  
R. Solis ◽  
M. Pezo ◽  
G. Diaz ◽  
L. Arévalo ◽  
D. Cachique
Keyword(s):  
Leaf Area ◽  
Butyric Acid ◽  
Vegetative Propagation ◽  
Root Formation ◽  
Unsaturated Fatty Acids ◽  
Block Design ◽  
Native People ◽  
Breeding Programs ◽  
Randomized Complete Block Design ◽  
Rooting Of Cuttings

Abstract The seeds of Plukenetia polyadenia have high levels of unsaturated fatty acids and are used as medicine and food for native people in the Peruvian and Brazilian Amazon. The objective of this study was to develop a method for vegetative propagation of Plukenetia polyadenia by rooting of cuttings. The experiment was laid out in a randomized complete block design with 12 treatments and 3 replications of 8 cuttings, in a 3 × 4 factorial arrangement. The factors were: 3 levels of leaf area (25, 50 and 75%) and 3 indole-3-butyric acid - IBA concentrations (9.84, 19.68 and 29.52mM) and a control without IBA. Data were submitted to analysis of variance and means were compared by Tukey test at 5% probability. Our results show that the use of cuttings with 50% of leaf area and treatment with 29.52mM of IBA induced high percentages of rooting (93%) and the best root formation. Vegetative propagation of Plukenetia polyadenia by cuttings will be used as a tool to conserve and propagate germplasm in breeding programs.

scholarly journals Three Mussaenda Cultivars Propagated by Stem Cuttings Exhibit Variation in Rooting in Response to Hormone and Rooting Conditions

2000 ◽  
Vol 10 (4) ◽  
pp. 780-784
Author(s):  
Rolston St. Hilaire ◽  
Carlos A. Fierro Berwart
Keyword(s):  
Butyric Acid ◽  
Root Length ◽  
Clonal Propagation ◽  
Stem Cuttings ◽  
Root Number ◽  
Root Numbers ◽  
Rooting Medium ◽  
Rooting Of Cuttings

The effects of 1H-indole-3-butyric acid (IBA), cutting position on stock plants, the date of propagation, the type of rooting substrate and temperature on rooting of mussaenda (Mussaenda erythrophylla Schumach. & Thonn. `Ashanti Blood' and `Rosea', and Mussaenda philippica A. Rich `Aurorae') stem cuttings were determined. Cuttings of `Ashanti Blood' produced the largest number of roots when treated with 15 mmol (3000 ppm) IBA and rooted in perlite at 29 °C (84 °F). Cutting position on stock plants did not affect rooting in any of the three cultivars. Propagation date and temperature of the rooting medium affected root numbers in `Aurorae'. With `Rosea', only the type of rooting substrate affected root number. Rooting percentage was 22%, 48%, and 39% in `Ashanti Blood', `Aurorae', and `Rosea' respectively. After 30 days of propagation average root length was 4, 12, and 4 mm (0.2, 0.5, and 0.2 inch) in `Ashanti Blood', `Aurorae', and `Rosea' respectively. Growers must determine precise rooting conditions for each cultivar to obtain consistent rooting of cuttings. This process may not be economically feasible on a commercial basis because rooting percentages are relatively low. We conclude that other methods of clonal propagation need to be evaluated before uniform rooted stem cuttings of mussaenda can be produced economically.

Relationship of Carbohydrate Sources and Indole-3-Butyric Acid in Olive Cuttings

1995 ◽  
Vol 22 (5) ◽  
pp. 811 ◽  
Author(s):  
Z Wiesman ◽  
S Lavee
Keyword(s):  
Butyric Acid ◽  
Root Length ◽  
Growth And Development ◽  
Adventitious Roots ◽  
Root Formation ◽  
Carbohydrate Content ◽  
Significant Percentage ◽  
Hardening Process ◽  
Olive Cultivars ◽  
Relationship Of

Indole-3-butyric acid (IBA) treatment improves rooting of easy-to-root and moderate-rooting olive cultivars, but does not stimulate root formation in hard-to-root cultivars. The rate of root formation in olive cuttings is slow and a source of carbohydrates is required to maintain and improve the effect of IBA. Sucrose treatment applied together with IBA and several times thereafter improved all rooting parameters: rooting percentage, number of adventitious roots and root length. During rooting, photosynthesis in the cuttings is very low and has almost no effect on the carbohydrate content, so that starch appears to be the major source of carbohydrates. Amyloplast levels decline during rooting and IBA increases the rate of their disappearance. A significant percentage of rooted olive cuttings collapse during their hardening process, when no starch pool is available. Only photosynthesis of fully-expanded leaves can contribute to the source of the carbohydrates needed by the rooted plants. However, when the top growth is reduced, as often occurs in IBA-treated cuttings, the carbohydrate supply may not be enough to keep the rooted plants alive and to support their growth and development. The data suggest that carbohydrates have an important role in rooting and improve the stimulatory effect of IBA in this process. During the stages involved in the formation of adventitious roots the endogenous carbohydrate pool is the main source of carbohydrates, while in young rooted plants the main source comes directly from the photosynthesis.

scholarly journals Timing and K-IBA Treatments Affect Rooting of Stem Cuttings of Cephalotaxus harringtonia

HortScience ◽  
1996 ◽  
Vol 31 (2) ◽  
pp. 222-223 ◽  
Author(s):  
Andrea L. Southworth ◽  
Michael A. Dirr
Keyword(s):  
Butyric Acid ◽  
Root Length ◽  
Stem Cuttings ◽  
Total Root Length ◽  
Japanese Plum

Stem cuttings from a prostrate clone of Cephalotaxus harringtonia (Forbes) K. Koch (Japanese plum yew) were taken monthly from Sept. 1994 through Aug. 1995, treated with K-IBA at 0 or 10,000 mg·liter–1, placed in a greenhouse under intermittent mist, and evaluated after 16 weeks. Cuttings taken from December to February and treated with K-IBA averaged 85% rooting, 10 roots per cutting, and a total root length of 35 cm. The next highest rooting percentages were for cuttings taken from March to May; poorest rooting occurred for cuttings taken from June to August and September to November, regardless of K-IBA application. Chemical name used: K-indole-3-butyric acid (K-IBA).

Effects of NaCl treatment on root system activity of the euhalophyte Aksora

2021 ◽  
pp. 46-55
Author(s):  
Zh. Rakhymzhan ◽  
Zh.B. Tekebayeva ◽  
R.R. Beysenova ◽  
A.D. Rakhisheva
Keyword(s):  
Root Growth ◽  
Root System ◽  
Surface Area ◽  
Root Length ◽  
Dry Weight ◽  
Suaeda Salsa ◽  
Total Root Length ◽  
Fresh Weight ◽  
Total Length ◽  
Absorption Area

For the purpose of study the relationship between the characteristics of the root system, activity and saline pressure of Aksora (Suaeda salsa Pall.) various concentrations of NaCl (0, 200, 400 and 600 mmol/L) were prepared. The effect of salt concentration on the biomass of Aksora (Suaeda salsa Pall.) root and the activity of the root system was studied. The results showed that as the NaCl concentration increased, the dry and fresh weight of the Aksora (Suaeda salsa Pall.) roots, the total length and surface area of the root increased and then gradually decreased. The highest values of dry weight, fresh weight and total length of the vascular system were observed at a concentration of 200 mmol / L NaCl, while at a concentration of 600 mmol/L NaCl, the dry weight, wet weight and total root length, and surface area signifi cantly decreased. These results indicate that refi nement of Aksora with higher concentrations of NaCl salt can increase the total length and absorption area of roots, thereby promoting root growth and adaptability to saline pressure. However, it has been found that with extrmely high salt concentrations inhibit root growth by reducing the total root length and absorption area. Key words: Aksora, vascular activity, NaCl, absorption zone.

scholarly journals Vegetative Propagation of Mature Eastern and Carolina Hemlocks by Rooted Softwood Cuttings

HortScience ◽  
2005 ◽  
Vol 40 (5) ◽  
pp. 1469-1473 ◽  
Author(s):  
Robert M. Jetton ◽  
John Frampton ◽  
Fred P. Hain
Keyword(s):  
Root Length ◽  
Root Formation ◽  
Tsuga Canadensis ◽  
Adventitious Root Formation ◽  
Eastern Hemlock ◽  
Stem Cuttings ◽  
Total Root Length ◽  
Auxin Concentration ◽  
Cutting Length ◽  
Percent Mortality

This study tested the effects of cutting length and auxin (NAA) concentration on adventitious root formation in softwood stem cuttings from mature eastern hemlock, Tsuga canadensis (L.) Carr., and carolina hemlock, T. caroliniana Engelm. Overall rooting percentage (41%) and percent mortality (22%) were higher for eastern hemlock compared with carolina hemlock (10% rooting and 13% mortality). Rooting percentage of each species responded differently to varying auxin concentrations (0, 1, 2, 4, 8 mm NAA). Maximum rooting (56%) for eastern hemlock occurred at 0 mm NAA; then decreased with increasing auxin concentration. Carolina hemlock rooting percentage increased from the control to a maximum (16%) at 1 mm NAA; then decreased with increasing auxin concentration. For both species, the lowest mortality occurred at the same auxin concentration as maximum rooting. The highest rates of mortality coincided with the same concentrations as the lowest rooting percentages. At all auxin concentrations, eastern hemlock had a higher number of roots and greater total root length relative to carolina hemlock. Mortality among 6-cm stem cuttings was twice that observed for 3-cm cuttings of both species. However, 6-cm cuttings of eastern hemlock that did form adventitious roots had more roots and longer total root length compared with 3-cm cuttings. Chemical name used: 1-naphthalenacetic acid.

scholarly journals In Vitro Root Formation of Derooted Jujube Seedlings Induced by Agrobacterium rhizogenes

HortScience ◽  
1995 ◽  
Vol 30 (4) ◽  
pp. 888E-888
Author(s):  
Muhammad Hatta ◽  
Caula A. Beyl ◽  
Stephen Garton
Keyword(s):  
Agrobacterium Rhizogenes ◽  
Root Length ◽  
Root Formation ◽  
Great Difficulty ◽  
Differential Response ◽  
Root Number ◽  
Ziziphus Jujuba ◽  
Positive Effect ◽  
Roots In Vitro

Jujube (Ziziphus jujuba) is a plant whose cuttings root with great difficulty. Several strains of Agrobacterium rhizogenes were tested on two segments (proximal and basal) of derooted jujube seedlings in the presence or absence of IBA for induction of roots in vitro. Strains of A. rhizogenes used were A4, A4pARC8, TR105, and R1000. Strain, segment of derooted seedling, and IBA influenced inoculation success. Strains A4pARC8 and TR105 were more infective than A4 and R1000. Basal segments were more responsive than proximal ones and 0.5 mg·liter–1 1BA had a positive effect on inoculation success. Agrobacterium rhizogenes and IBA were very effective in promoting root formation, root number, root length, and early root emergence. They worked synergistically, but were effective independently as well. A4pARC8 and TR105 were more effective than strains A4 and R1000, and generally more effective than IBA. lBA was unable to eliminate the differential response of the two segments for individual strains.

Working Memory, Mental Prospection, Time Orientation, and Cognitive Insight

2013 ◽  
Vol 34 (3) ◽  
pp. 159-169 ◽  
Author(s):  
Sevtap Cinan ◽  
Aslı Doğan
Keyword(s):  
Working Memory ◽  
Structural Equation ◽  
Factor Model ◽  
Time Orientation ◽  
Equation Modeling ◽  
Cognitive Insight ◽  
Confirmatory Factor ◽  
Negative Effect ◽  
Positive Effect ◽  
Three Factor

This research is new in its attempt to take future time orientation, morningness orientation, and prospective memory as measures of mental prospection, and to examine a three-factor model that assumes working memory, mental prospection, and cognitive insight are independent but related higher-order cognitive constructs by using confirmatory factor analysis (CFA). The three-factor model produced a good fit to the data. An alternative one-factor model was tested and rejected. The results suggest that working memory and cognitive insight are distinguishable, related constructs, and that both are distinct from, but negatively associated with, mental prospection. In addition, structural equation modeling (SEM) showed that working memory had a strong positive effect on cognitive insight and a moderate negative effect on mental prospection.

EFFECTS OF ALUMINIUM ON THE ADVENTITIOUS ROOT SYSTEM, AERIAL BIOMASS AND GRAIN YIELD OF MAIZE GROWN IN THE FIELD AND IN A RHIZOTRON

2006 ◽  
Vol 42 (3) ◽  
pp. 351-366 ◽  
Author(s):  
J. J. COMIN ◽  
J. BARLOY ◽  
V. HALLAIRE ◽  
F. ZANETTE ◽  
P. R. M. MILLER
Keyword(s):  
Grain Yield ◽  
Root System ◽  
Soil Solution ◽  
Root Length ◽  
Adventitious Root ◽  
Adventitious Roots ◽  
Total Root Length ◽  
Al Tolerance ◽  
Root Branching ◽  
Four Levels

The aim of this work was to study the effects of soluble aluminium on the morphology and growth of the adventitious root system, aerial biomass and grain yield of maize (Zea mays). The analysis focuses on two hybrid cultivars (Al-sensitive HS7777 and Al-tolerant C525M). Experiments were carried out in the field and in a rhizotron in Curitiba, Paraná, Brazil. In the field, four levels of lime application were used: T0 = 0 t ha−1, T1 = 3.5 t ha−1, T2 = 7.0 t ha−1, and T3 = 10.5 t ha−1. Two levels were used in a rhizotron: T0 and T3. In the surface horizon (0–15 cm), the Al concentrations of the soil solution were: T0 = 15, T1 = 5.1, T2 = 4.4, and T3 = 3.1 μM. In the field, neither Al concentration in the soil solution nor cultivar affected the number of primary adventitious roots per internode or the total number of primary adventitious roots. However, root diameter, plant population and grain yield of the two cultivars confirmed the differences in Al tolerance between them. Al was observed to have an adverse effect on the grain yield from C525M, while low yields from HS7777, at all levels of Al, precluded any response to liming. In the rhizotron studies, Al concentration and cultivar affected the root branching and total root length. Cultivar C525M had more branches and total root length than HS7777, mainly at low concentrations of soil Al solution, leading to greater spatial colonization of the soil down to 0.9 m depth.

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