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1.
Vegetative propagation of Aesculus indica through stem cuttings treated with plant growth regulators
Cuttage propagation of Aesculus indica was tested by treatments with different concentrations of indole-3-acetic acid (IAA) @ 2000, 4000 (ppm), indolebutyric acid
(IBA) @ 2000, 4000 (ppm) and naphthlcetic acid (NAA) @ 2000, 4000 (ppm) in dry formulation in the Forest Nursery, Faculty
of Forestry, SKUAST-K, Shalimar. The cuttings treated with IBA @ 4000 ppm and IBA @ 2000 ppm had a sprouting rate of 75% and
50%, respectively, which was significantly higher than that of control and other treatments. The highest rooting rate (50%)
was recorded in the cuttings with the application of IBA @ 4000 ppm. The cuttings treated with IBA @ 2000 ppm had 25% rooting
rate. All other treatments along with control (talc powder) failed to induce rooting. It was concluded that IBA @ 4000 ppm
was a better-applied concentration for vegetative propagation of A. indica under Kashmir conditions.
Biography: Mumtaz Majeed (1980– ), male, post graduate in Faculty of Forestry, Sher-e-Kashmir University of Agricultural Science
& Technology, Shalimar, Srinagar - 191 121, J&K, India. 相似文献
2.
Synergism Between IBA and Thiamine for Induction and Growth of Adventitious Roots in Tectona grandis
《Journal of Sustainable Forestry》2013,32(4):99-112
Abstract Application of IBA (0, 1000, 2000, and 3000 ppm) and thiamine (0, 200, 400, 600, and 800 ppm) alone or in all possible combinations, was investigated for induction and growth of adventitious roots in branch cuttings of teak (Tectona grandis). Of these, 1000 ppm IBA and 600 ppm thiamine alone or 1000 ppm IBA × 800 ppm thiamine significantly promoted various characteristics of adventitious roots. However, a very strong synergism between IBA and thamine was observed, as the effect of 1000 ppm IBA × 800 ppm thiamine was several fold more pronounced than that of individual application of IBA or thiamine in induction and growth of adventitious roots. Therefore, administration of 1000 ppm IBA × 800 ppm thiamineis recommended for clonal propagation of teak on a large scale. 相似文献
3.
Vegetative propagation of Aesculus indica through stem cuttings treated with plant growth regulators 总被引:1,自引:0,他引:1
Cuttage propagation of Aesculus indica was tested by treatments with different concentrations of indole-3-acetic acid (IAA) @ 2000, 4000 (ppm), indolebutyric acid (IBA) @ 2000, 4000 (ppm) and naphthlcetic acid (NAA) @ 2000, 4000 (ppm) in dry formulation in the Forest Nursery, Faculty of Forestry, SKUAST-K, Shalimar. The cuttings treated with IBA @ 4000 ppm and IBA @ 2000 ppm had a sprouting rate of 75% and 50%, respectively, which was significantly higher than that of control and other treatments. The highest rooting rate (50%) was recorded in the cuttings with the application of IBA @ 4000 ppm. The cuttings treated with IBA @ 2000 ppm had 25% rooting rate. All other treatments along with control (talc powder) failed to induce rooting. It was concluded that IBA @ 4000 ppm was a better-applied concentration for vegetative propagation of A. indica under Kashmir conditions. 相似文献
4.
Adventitious rooting in shoot cuttings of neem (Azadirachta indica) and karanj (Pongamia pinnata) was investigated in different seasons. The influence of auxins and B-vitamins (neem only) was evaluated. Maximum rhizogenesis coincided with the emergence of new sprouts i.e. February (neem) and March (karanj). Considering both rooting percentage and root biomass, IBA was the most effective auxin tested. Compared to auxin free controls, IBA (1000 ppm in neem and 800 ppm in karanj) significantly increased adventitious rooting percentage (80 to 100 % respectively), the numbers of roots and root biomass for both species. In neem, B-vitamin treatment yielded 40–50% rooting for cuttings. This was significantly greater than rooting for controls but equivalent to IAA treatments. In neem, some of the cuttings treated with 2000–3000 ppm IBA had well developed root systems without any sprouts. In karanj, all auxin treatments promoted sprouting. The level of total soluble sugars in the rooting zone of neem and karanj was higher in non-rooted than rooted cuttings. 相似文献
5.
Dalbergia sissoo Roxb. is one of the promising multipurpose tree species of South Asia. Most of the plantations of D. sissoo from seeds are facing severe threats due to the die-back disease, which ultimately causes death of this potential tree-species
within a few months. Vegetative propagation could avoid the die-back disease. Thirty mother trees of different age-groups
of D. sissoo were selected for evaluating the rooting behaviour of branch cuttings from D. sissoo as influenced by auxins (IAA or IBA at 100, 200, 500 mg·L−1), ages of mother trees (10, 4 and 2 years old) and different environment conditions, i.e., different mediums (soil and sand)
or light conditions (in shade and open condition). The results show that application of IAA and IBA induced more numbers of
cuttings (collected from 10-year-old mother trees) to root compared to control. Branch cuttings of D. sissoo collected from 10-year-old mother trees and planted in soil bed in open conditions had 100.0% of cuttings to root in IAA
(100 mg·L−1) and IBA (200 mg·L−1) treatments. Both rooting medium (Soil and sand) influenced significantly (p<0.05) on rooting response of branch cuttings. Soil medium was found to achieve maximum no. of branch cuttings to root, compared
to sand medium. 相似文献
6.
The rooting ability of the cuttings of semi-lignified branches of Aquilaria sinensis by different treatments were studied in this paper.The treatments included the solutions of IAA,IBA,NAA and ABT-1 with the concentrations of 500,1 000 mg·L-1 and 1 500 mg·L-1.The results showed that there were significant differences in the rooting ratio among different treatments.The rooting ratio of cuttings with IAA 1 500 mg·L-1 treatment was the highest at 43.08%,followed by the cuttings with IBA 1 500 mg·L-1.The advent... 相似文献
7.
Kiran Kaul 《New Forests》2008,36(3):217-224
The present study investigates optimal conditions for the vegetative propagation of Himalayan yew Taxus wallichiana Zucc., an important medicinal tree, during spring. Effect of four treatments: (a) sex of donor plant (male and female), (b)
age/type of shoot (1, 2, 3 year old, long and dwarf shoots), (c) auxin treatment (IBA and NAA at 0, 0.5, 1.25, 5.0 & 50.0 mM)
and (d) rooting environment (raised beds/polythene bags) on percentage rooting in stem cuttings was studied. Randomized complete
block (RBD) designs were used for experimentation. Rooting ability of cuttings was significantly influenced by all these treatments.
The overall rooting response was higher in long shoot cuttings taken from female tree. Age of shoot also influenced the rooting
response and was highest in 1 year old long shoot cuttings of female tree. Exogenous application of auxin, α-naphthalene acetic
acid (NAA) and indole-3 butyric acid (IBA), had significant positive effect on the percentage rooting. IBA significantly enhanced
the rooting percentage in 1 year old long and dwarf shoots at lower doses and 2 and 3 year old long shoots from female tree
at higher doses. Maximum percent rooting (90% ± 2.8) was obtained with interactive effect of 0.5 mM, NAA (22 h) × 1 year old
long shoot from female tree; followed by the interactive effect of 50 mM IBA (5 s) × 3 year old long shoot from female tree
(83% ± 4.1). Cuttings planted in soil: sand medium in polythene bags showed earlier rooting response (12 weeks) than cuttings
planted in raised nursery beds (24 weeks). Overall, the findings of this study suggest that 0.5 mM IBA treatment is suitable
for enhancing adventitious rooting in 1 year old long and dwarf shoots of male and female trees. IBA at higher doses is suitable
for enhancing the rooting percentage of 2 and 3 year old long shoots from female tree. This study provides a significant lead
towards the development of a simple and inexpensive technique for large scale propagation, aforestation of elite genotypes
and raising of bush type plantation under ex-situ conditions. 相似文献
8.
垂丝海棠插穗的内源激素水平及其与扦插生根的关系 总被引:3,自引:0,他引:3
垂丝海棠扦插繁殖的试验结果表明,嫩枝扦插效果好于硬枝扦插,并且母树年龄是影响其扦插生根的重要因子。母树年龄为2年生时,生根率达77%以上。本文在此试验的基础上,对嫩枝和硬枝插穗中内源植物激素水平进行了测定。结果发现嫩枝插穗中IAA、CTKs的含量要高于硬枝插穗中IAA、CTKs的含量,并且随母树年龄的增加而降低;相反,嫩枝插穗中ABA含量要低于硬枝插穗中ABA的含量,并且随着母树年龄的增加而增加。实验结果表明:IAA、ABA的含量和扦插生根有密切关系。IAA促进生根,ABA抑制生根。IAA/ABA比值可以用来衡量垂丝海棠的生根能力。 相似文献
9.
Tests were conducted to assess rootability of red alder softwood cuttings from shoots of young trees and epicormic sprouts of mature individuals. Ortets were 3 to 34 years old, and treatments with and without indole-3-butyric acid (IBA) were compared. The extent of rooting and root vigor on the cuttings varied greatly among ortets and treatments. Among nonterminal cuttings, the best overall rooting success, with and without IBA, was obtained with cuttings of the youngest ortet. Average rooting of terminal and nonterminal cuttings of one clone were 100% and 64%, respectively. Although cuttings of some trees rooted well without IBA, the IBA treatment appeared to be generally beneficial. For all nonterminal cuttings of all clones, best results (80.0%/x) were obtained with a 10-sec dip in 2,000 or 4,000 ppm IBA. Vigorous planting stock was obtained from the rooted cuttings of all clones. Using epicormic sprouts from mature trees of proven performance will presumably allow propagation of superior trees and establishment of new plantations with improved stock. 相似文献
10.
Black locust (Robinia pseudoacacia L.) is one of the most important stand-forming tree species in Hungary and its importance is increasing in many countries.
Black locust plants are commonly produced by two methods, by seed and by root cuttings. Tissue culture propagation can be
considered as a relatively new method. Growing trees from seed is a relatively simple method for reliably producing seedlings
on a large scale under a variety of circumstances. Mechanization of the method is easy and the production cost is relatively
low. Propagation from root cuttings and tissue culture are valuable for reproduction of superior individuals or varieties.
By applying these methods, superior traits of the selected trees can be preserved in the clones. Recent experiments demonstrated
that micropropagated trees could be successfully transplanted into soil, hardened and grown in the field.
Biography: Karoly Redei (1952), male, doctor, deputy director general of Hungarian Forest Research Institute H-1023 Budapest, Frankel
Leó Str. 42 44, HUNGARY.
Responsible editor: Chal Ruihai 相似文献
11.
Various pre- and post- harvest factors wereinvestigated to refine asexual propagation proceduresfor jack pine (Pinus banksiana) usingproliferated dwarf shoot (PDS) cuttings. The factorsinvestigated included donor plant cultural treatments(growth conditions, fertility, pruning and coldtreatments) and application of auxins to cuttings topromote rooting. Production of PDS under greenhouseconditions was enhanced by pruning, fertilizerapplications and a cold treatment. Coldstorage of donor plants (2–6 weeks at 2°C)prior to cutting harvest, increased rootingfrequencies. After a 9-month seedling greenhousegrowing phase between 13 and 34 PDS cuttings could beharvested from a donor plant. Three pruningtreatments followed by successive harvests of the PDSdeveloping on the most distal 2 cm of the shootsresulted in the highest PDS yields. Optimal rootingwas obtained from donor plants grown in a greenhouseenvironment with relatively low fertilizerapplications (150 ppm N; 20-8-20 monthly). Rooting ofPDS cuttings ranged from 45–100%. Rootingfrequencies were highest with 5.4 mM NAA application. Implications of these results with respect tooperational asexual propagation of jack pine arediscussed. 相似文献
12.
13.
Traditional knowledge in northern Ethiopia points towards the root-stimulating properties of the latex found in Euphorbia abyssinica (EAG). Stem cuttings of EAG as well as cuttings of other species treated with EAG latex reportedly root easily in dry soil.
This could be attributable to endogenous auxins contained in the latex. We screened EAG latex for auxins and precursor molecules
using analytical LC-MS/MS, and tested the effect of EAG latex on the rooting of woody cuttings of Boswellia papyrifera, a threatened multipurpose tree. The EAG latex contained indole acetic acid (IAA) (0.06 μg/g latex), an auxin controlling
apical dominance and lateral rooting, as well as IAA metabolites and conjugates. Boswellia cuttings treated with EAG latex rooted significantly sooner and showed higher survival ratios than untreated controls. EAG
is widely available and its latex easy to obtain. Therefore it is a promising source of a natural plant growth regulator which
may be used for improving low technology vegetative propagation of woody species in East and Northeast Africa, including the
threatened Boswellia tree. 相似文献
14.
《Scandinavian Journal of Forest Research》2012,27(3):238-245
Propagation costs could be cut by replacing part of the micropropagation process with steps involving more traditional techniques. This study explored possibilities for improving existing vegetative propagation techniques for aspen using stem cuttings obtained from micropropagated plants. Vegetative propagation through stem cuttings was studied in 10 micropropagated hybrid aspen clones (Populus tremula L. 相似文献
15.
骆琴娅 《中南林业科技大学学报(自然科学版)》1991,(2)
用IBA500ppm和1000ppm酒精溶液处理乌桕嫩枝扦插条,能促进插条生根及生长。用500 ppm和1000ppm PP333溶液处理插条,扦插后的前20天表现出对生根有不同程度的抑制作用。但40天时,500 ppm处理的生根率明显增高,1000ppm处理的也出现了愈伤组织,并表明其对根的粗度生长具有促进作用。 相似文献
16.
A study to determine the best vegetative propagation protocol was carried out for two species of the endemic genus Cloezia for conservation and mining revegetation activities in New Caledonia. Effects of clonal capacities and auxin treatments on
rooting of C. buxifolia and C. aquarum semi-hardwood cuttings taken from wild populations were evaluated in four experiments. Different phenotypes varied in their
capacity to root (from 0 to more than 80%) and this underlines the importance of collecting cuttings from different plants
when revegetation programs are based on vegetative propagation. The experiments evaluated the effectiveness of IBA at 5, 10
and 20 g kg−1, IAA at 5 and 10 g kg−1 and NAA at 1 and 2 g kg−1 treatments to enhance rooting of C. buxifolia tip cuttings and C. aquarum tip and stem cuttings compared to control cuttings with no applied auxin. With the exception of IAA, auxin treatments enhanced
the percentage of cuttings with roots and significantly improved the number of roots per cutting and root length. In this
study, the best treatment is 10 g kg−1 IBA for C. buxifolia. For C. aquarum, 20 g kg−1 IBA significantly enhances quantitatively and qualitatively rooting of both tip and stem cuttings.
Résumé Cette étude porte sur la définition d’un protocole de multiplication végétative optimale de deux espèces du genre endémique Cloezia dans un but de conservation et de revégétalisation en Nouvelle-Calédonie. Quatre essais visent à déterminer les potentialités clonales de différents individus et l’effet de divers traitements hormonaux sur l’enracinement de boutures de C. buxifolia et C. aquarum. L’enracinement des boutures dépend du pied-mère sur lesquelles elles sont récoltées et peut varier de 0 à plus de 80%, ce qui indique l’intérêt de la méthode d’échantillonnage lors de la collecte des boutures. L’effet de traitements hormonaux à base d’AIB, AIA et ANA à différentes concentrations, respectivement de 5, 10 et 20 g kg−1, 5 et 10 g kg−1 et 1 et 2 g kg−1 est également étudié sur des boutures de tête de C. buxifolia et des boutures de tête et de tige de C. aquarum. Ces traitements améliorent le pourcentage d’enracinement et augmentent significativement le nombre de racines produites et la longueur des racines des boutures de Cloezia, à l’exception des traitements à base d’AIA. Dans cette étude, le meilleur traitement est 10 g kg−1 d’AIB pour C. buxifolia et 20 g kg−1 d’AIB pour C. aquarum.相似文献
17.
18.
The effect of auxins (IAA or IBA at 100,200,500 mg L 1) on rooting and sprouting parameters differed significantly (p < 0.05).Rooting and sprouting percentages were higher in some treatments while other parameters were significantly higher in other treatments.The results of the present study revealed that rooting was significantly (p < 0.05) affected by the length of cuttings,as well as the position of shoots and type of cuttings.On average,86.0 per cent rooting was observed in the 30-cm long cuttings compared to the other two lengths of cuttings,i.e.,20 and 25 cm,irrespective of any auxin treatment.In a control set,without any auxin treatment,a maximum of 60.0% rooting was recorded in the 30-cm long cuttings and a minimum of 40.0% of the cuttings rooted in the 20-cm long cuttings.Similarly,cuttings collected from the lower and upper portions of shoots resulted in 72.5 and 52.5 per cent rooting respectively,irrespective of auxin treatments.Maximum rooting was observed in the lower portion (40.0%) of cutting compared to the upper portion (30.0%) in the control set without auxin treatment.Leafless branches produced maximum (72.0%) rooting compared to the leafy cuttings (35.0%),irrespective of the auxin treatment.The leafy cuttings produces a minimum of 15.0% sprouting and rooting in the control set. 相似文献
19.
Yen-Nyuk Lo 《Forest Ecology and Management》1985,12(1):43-52
Single-node leafy cuttings from 8- and 15-month-old seedlings of the large Bornean Dipterocarp Shorea macrophylla (Illipe nut) rooted easily under continuous mist, both with and without the application of auxins. Callus production was greatest in the untreated cuttings. Rate of rooting was enhaced by 1200 ppm and 3600 ppm IBA, but the overall level of rooting after 61 days was unaffected by auxin treatment. In a second experiment, 3600 ppm IBA was found to be more effective than 3600 ppm NAA and mixtures of 1800 ppm NAA + 1800 ppm IBA. Mortality of cuttings was greatest with IBA especially at 10800 ppm. Cuttings from the second node below the apex rooted best, with rooting ability of those from nodes 3, 4 and 5 being progressively worse, and mortalities rising with distance from the apex. Cuttings from the uppermost node, which included the developing apex, had the lowest rooting ability. When continuous misting was replaced with misting for alternate hours, rooting was still good, but the absence of misting overnight resulted in much increased cutting mortality and, subsequently, in decreased rooting. It is suggested that Shorea macrophylla could be domesticated for fruit or timber production by the propagation of superior clones. 相似文献
20.
A study to determine the best vegetative propagation protocol was carried out for Dalbergia melanoxylon. Natural regeneration of D. melanoxylon is limited due to poor seed viability and germination. The effects of age of donor plant, indole-3-butyric acid (IBA) treatment
and cutting position on rooting of stem cuttings were investigated. The effect of age of donor plant was significant (P < 0.001) only for percent rooting, position effect was significant for all studied parameters, and IBA treatment at 300 ppm
was insignificant only for percent callusing. Interactive effects of cutting position × age of donor and cutting position × IBA
treatment were significant for percent rooting and root number per cuttings while interactive effect of age × IBA was significant
only for percent rooting. Observed difference in rooting performance could be due to uneven distribution of root promoting
and inhibiting substances with respect to age of donor plant and IBA which intensified root formation. Cuttings from juvenile
donor plant performed better in all rooting parameters than mature donor plant. The highest percentages in rooting were (71.11%)
and (24.42%) for cuttings from juvenile and mature donor plants, respectively. IBA treated cuttings produced higher percentage
rooting, number of roots and root length than untreated cuttings which revealed a strong IBA influence on rooting ability
of stem cuttings in D. melanoxylon. It was concluded that stem cuttings should be taken from juvenile donor plants and basal cutting position should be used
to produce high quality planting stock material for the afforestation and conservation programme of D. melanoxylon. 相似文献