NGHIÊN CỨU MỘT SỐ BIỆN PHÁP KỸ THUẬT TĂNG KHẢ NĂNG NHÂN GIỐNG CÂY SÂM PHÚ YÊN (Abelmoschus sagittifolius Kurz)

2014 ◽  
Vol 91 (3) ◽  
Author(s):  
Nguyễn Đình Thi
Keyword(s):  
Vegetative Propagation ◽  
Shoot Growth ◽  
Propagation Rate ◽  
Root Weight ◽  
Root Number ◽  
College Of Agriculture ◽  
Shoot Height ◽  
Shoot Number ◽  
Root And Shoot Growth ◽  
Shoot Weight

TÓM TẮT Các thí nghiệm được tiến hành trong điều kiện nhà ươm có mái che tại Trung tâm Ứng dụng và Chuyển giao công nghệ, Sở Khoa học và Công nghệ tỉnh Phú Yên.  Kết quả cho thấy: 1) Xử lý α-NAA 400 ppm trong thời gian 1,5-2 phút, cành giâm dài 7 cm và trên cành để lại 4 lá, phun bổ sung dinh dưỡng bằng phân bón lá Supermes giúp cành giâm ra rễ nhiều, khả năng sinh trưởng của rễ và chồi cành tốt hơn đối chứng và các công thức thí nghiệm khác; 2) Giá thể vô bầu cành giâm có thành phần 69% đất phù sa + 1% super lân + 20% trấu hun + 10% phân chuồng hoai giúp cây giống sinh trưởng phát triển khỏe; 3) Từ kết quả các thí nghiệm, chúng tôi đã xây dựng quy trình nhân giống sâm Phú Yên cải tiến, kết quả thử nghiệm quy trình cải tiến cho thấy cây giống sau giâm 36 ngày có các chỉ tiêu sinh trưởng về chồi và rễ hơn quy trình cũ ở mức sai khác có ý nghĩa thống kê, cụ thể chiều dài chồi tăng 5%, số chồi tăng 21%, khối lượng chồi tăng 14%, số rễ/cành giâm tăng 25%, chiều dài rễ tăng 15% và khối lượng rễ tăng 12%. Từ khóa: Sâm Phú Yên, biện pháp kỹ thuật, nhân giống vô tính.STUDY ON APPROPRIATE CULTIVATED TECHNIQUES FOR IMPROVING VEGETATIVE PROPAGATION RATE OF PHU YEN GINSENG (Abelmoschus sagittifolius Kurz)Nguyễn Đình Thi, College of Agriculture and Forestry, Hue UniversityTrương Hùng Mỹ, Phu Yen Department of Science and TechnologySUMMARYExperiments were conducted in nethourse at Application and Transformation Technology Center, Phu Yen Department of Science and Technology. The results showed that: 1) Using α-NAA 400 ppm solution dipped in 1.5-2 minutes, main stem with 7cm length and 4 leaves, spraying Supermes 3days/time appeared optimal for root and shoot growth of Phu Yen ginseng stem cutting; 2) In addition, using rootting medium mixture of 69% silt + 1% super phosphate + 20% rice husk + 10% compost obtained the highest of shoot, root and leaves growth; 3) After 36 days vegetative propagation, when comparing with the old cultivated techniques Phu Yen ginseng increase 5-25% growth indicators (shoot height = 5%, shoot number = 21%, shoot weight = 14%, root number = 25%, root length = 15% and root weight = 12%).Keys word: Phu Yen ginseng, cultivated techniques, vegetative propagation.

Duration of zinc uptake inhibition by chlorsulfuron in wheat

1992 ◽  
Vol 43 (5) ◽  
pp. 1169 ◽  
Author(s):  
LD Osborne ◽  
AD Robson
Keyword(s):  
Root Growth ◽  
Zinc Deficiency ◽  
Root Exudates ◽  
Shoot Growth ◽  
Zinc Uptake ◽  
Root Weight ◽  
Uptake Inhibition ◽  
Root And Shoot Growth ◽  
Shoot Weight ◽  
Hydrolysis Of

The duration of inhibition of zinc uptake by chlorsulfuron was examined in wheat plants in a glasshouse experiment. Chlorsulfuron decreased shoot weight, root weight and zinc uptake. Plants that were treated with chlorsulfuron and adequately supplied with zinc partially recovered from root and shoot growth inhibition by 6 weeks and zinc uptake was recovering by 8 weeks. Plants that were seriously zinc deficient did not recover. In this experiment, potential grain yield was only reduced by chlorsulfuron when zinc supplies were inadequate. It is suggested that the recovery of plants from zinc deficiency may be the result of two processes; hydrolysis of chlorsulfuron with time removing constraints to root growth and functioning, and the release of root exudates from zinc deficient plants effective at mobilizing zinc from soil. In the field, chlorsulfuron is only likely to induce zinc deficiency and reduce yield in wheat where supplies of this trace element are marginal for growth.

scholarly journals Influence of cutting type and size on rooting of Lavandula dentata L

2012 ◽  
Vol 14 (1) ◽  
pp. 8-11 ◽  
Author(s):  
C.M. Bona ◽  
I.R. Biasetto ◽  
M. Masetto ◽  
C. Deschamps ◽  
L.A. Biasi
Keyword(s):  
Essential Oil ◽  
Vegetative Propagation ◽  
Plant Material ◽  
The Other ◽  
Root Weight ◽  
Root Number ◽  
Polystyrene Foam ◽  
High Quality ◽  
Cutting Propagation ◽  
Superior Clones

Even though the Lavandula species may be propagated by seeds, it should not be the preferred propagation method because it causes a great lack of uniformity. On the other hand, asexually propagated lavender crops would provide more homogeneous crops, and clones from high quality plant material would increase the odds for obtaining a higher quality essential oil. However, problems such as poor rooting and restrict market availability for superior clones have been a problem in vegetative propagation of the Lavandula species. The objective of this work was to define which type and size of cutting is more adequate for cutting propagation of L. dentata, a very productive Lavandula species. Cuttings with 5, 8, 10 or 13 cm and from the apical or basal parts of stems cut from L. dentata stock plants were placed in Plantmax HT® filled polystyrene foam trays and kept under intermittent mist system for two months. Averages of root number, length of the longest root, fresh and dry root weight, and percentage of rooting were evaluated. Apical cuttings combined 97.9% rooting with an average of 13.2 roots per cutting and basal cuttings 93.7% rooting with 2.98 roots per cutting. Apical cuttings with at least 10 cm in length were considered the most adequate for cutting propagation of L. dentata.

Growth and Development of Field Horsetail (Equisetum arvenseL.)

Weed Science ◽  
1986 ◽  
Vol 34 (2) ◽  
pp. 271-275 ◽  
Author(s):  
George Marshall
Keyword(s):  
Growth And Development ◽  
Dry Matter ◽  
Shoot Growth ◽  
Equisetum Arvense ◽  
Shoot Height ◽  
Potted Plants ◽  
Shoot Number ◽  
Herbicide Treatments ◽  
Shoot Growth Rate ◽  
Rhizome System

The growth and development of field horsetail (Equisetum arvenseL. # EQUAR) was measured outdoors using potted plants grown from one-node rhizome fragments. Shoot growth rate increased slowly after planting in March, accelerating to a maximum during July with maximas for shoot height during August and shoot number in September. Rhizome system growth rates initially followed a similar pattern to that of the shoots achieving a maximum during July. Dry matter accumulated in the rhizomes until October and declined thereafter throughout the winter. Tubers initiated during August grew in size and number until November, well beyond the period of active shoot growth and onset of senescence. The characteristics of the growth and development of field horsetail are discussed in relation to achieving weed control via cultural and herbicide treatments.

Differential Response of Ajuga (Ajuga reptans), Wintercreeper (Euonymus fortunei), and Dwarf Burning Bush (Euonymus alatus‘Compacta’) to Root- and Shoot-Applied Isoxaben

1999 ◽  
Vol 13 (4) ◽  
pp. 685-690 ◽  
Author(s):  
Sydha Salihu ◽  
Jeffrey F. Derr ◽  
Kriton K. Hatzios
Keyword(s):  
Shoot Growth ◽  
Sand Culture ◽  
Root Weight ◽  
Root Tips ◽  
Visible Injury ◽  
Culture Studies ◽  
Ajuga Reptans ◽  
Euonymus Fortunei ◽  
Shoot Weight ◽  
Root Treatment

Hydroponics and sand culture studies evaluated the effects of isoxaben rate (0.84, 1.69, and 3.39 kg/ha) and application type (root only, shoot only, and root plus shoot) on the growth of ajuga, wintercreeper, and dwarf burning bush. Similar responses were exhibited by the three species tested in both hydroponics and sand culture studies. Based on shoot weight reductions, dwarf burning bush was one to three times more sensitive than wintercreeper, which was the most tolerant of the three species, and ajuga was five to 20 times more sensitive than wintercreeper. Isoxaben applied to the root system at all three rates injured ajuga root tips and foliage and reduced root weight by approximately 40% and shoot weight by 20 to 30%. Isoxaben applications to ajuga foliage damaged the roots and leaves and caused over 30% reductions in shoot and root weights at the highest rate tested. Isoxaben applied to dwarf burning bush roots caused less than 20% shoot injury, reduced root weight by 8 to 18%, and reduced shoot weight by less than 10%. Application to dwarf burning bush foliage caused 20 to 30% injury, but only slight reductions in root and shoot weights were observed. No visible injury was observed in wintercreeper from any isoxaben application. However, root treatment reduced wintercreeper root weight by approximately 15%, and shoot treatment reduced shoot weight by 6 to 10% at the highest isoxaben rate tested. Application of isoxaben to both roots and foliage of wintercreeper resulted in similar reductions in shoot and root weights compared to root or shoot exposure alone. Shoot application to wintercreeper affected root growth, and root treatment reduced shoot growth.

scholarly journals Copper-treated Plug Flats Influence Root Growth and Flowering of Bedding Plants

HortScience ◽  
1996 ◽  
Vol 31 (6) ◽  
pp. 941-943 ◽  
Author(s):  
A.M. Armitage ◽  
P.M. Gross
Keyword(s):  
Root Growth ◽  
Flowering Time ◽  
Shoot Growth ◽  
Optimal Time ◽  
Root Weight ◽  
Seedling Height ◽  
Copper Hydroxide ◽  
Bedding Plants ◽  
Flowering Date ◽  
Shoot Weight

A copper hydroxide formulation (0%, 3.5%, 7%, 11% Cu) was applied to plug trays before sowing seeds of Impatiens ×hybrida L. `Accent Red', Pelargonium ×hortorum Bailey `Scarlet Elite', and Petunia ×hybrida Hort.Vilm.-Andr. `Ultra White' to investigate the influence of the formulations on ease of transplant, root growth, and shoot growth. These factors also were investigated in Cu-treated seedling plugs held past optimal transplanting stage. Root spiraling and seedling height at transplant were reduced for all taxa grown in Cu-treated trays, regardless of concentration, compared to seedlings from nontreated trays. Root weight and shoot weight responses to Cu treatments at transplant and at flowering varied among taxa. Mature heights of all taxa were unaffected by Cu treatment; however, flowering date was delayed for impatiens and geraniums transplanted at optimal time from Cu-treated trays. In general, petunias displayed little response to Cu treatment. Root spiraling was reduced and plugs were removed more easily from Cu-treated than from control trays stored for 2 weeks in the greenhouse, but flowering time was delayed for 12 days for impatiens and petunias and 21 days for geraniums, regardless of Cu concentration.

scholarly journals Fertilizer, Irrigation and Root Ball Slicing Affects Burford Holly Growth after Planting

1996 ◽  
Vol 14 (3) ◽  
pp. 105-110 ◽  
Author(s):  
Edward F. Gilman ◽  
Thomas H. Yeager ◽  
Diane Weigle
Keyword(s):  
Root Growth ◽  
Weight Ratio ◽  
Dry Weight ◽  
Total Weight ◽  
Root Weight ◽  
Irrigation Frequency ◽  
Shoot Dry Weight ◽  
Shoot Number ◽  
Ilex Cornuta ◽  
Shoot Weight

Abstract Dwarf burford holly (Ilex cornuta ‘Burfordii Nana’) fertilized with 22.1 g N/container/yr of nitrogen during production in the nursery generated more new shoot weight but less root weight after transplanting to a landscape than those receiving 14.8 g N/container/yr. Slicing the root ball at planting, compared to not slicing, resulted in comparable regenerated root weight but reduced new shoot number, new shoot dry weight and new shoot:regenerated root dry weight ratio when irrigation was not applied daily after transplanting. Although irrigation frequency did not impact total weight of regenerated roots into landscape soil, more roots grew from the bottom half of the root ball when plants were irrigated periodically after planting than when plants received daily irrigation. Plants irrigated other than daily produced fewer shoots and less shoot weight than those receiving irrigation daily after transplanting. When plants were without irrigation for 4 or 6 days in the first week after transplanting, those planted without the nursery container on the root ball were more stressed (more negative xylem potential) than those planted with the container still on the root ball. However, two weeks later, plants without the nursery container were less stressed due to root growth into landscape soil.

scholarly journals BIOSTIMULANTS CAN INCREASE GROWTH OF GREEN-HOUSE-GROWN ORNAMENTAL ANNUALS

HortScience ◽  
1996 ◽  
Vol 31 (5) ◽  
pp. 744c-744 ◽  
Author(s):  
Brian P. Gibbons ◽  
Timothy J. Smalley ◽  
Allan M. Armitage
Keyword(s):  
Root Growth ◽  
Shoot Growth ◽  
Root Weight ◽  
Green House ◽  
Salvia Splendens ◽  
Organic Products ◽  
Shoot Weight ◽  
Begonia Semperflorens

Three biostimulants, Grow-plex (Menefee Mining Corp., Dallas), Roots 2 (LISA Product Corp., Independence, Mo.), and Root n' Shoot (Natural Organic Products International, Mount Dora, Fla.) were applied to transplanted plugs of Salvia splendens `Empire Red' and Begonia semperflorens `Varsity Pink' and `Varsity Brite Scarlet'. Root n' Shoot drench (0.78%) solutions at transplant increased root weight, but a 1.56% solution decreased root weight of Salvia, although shoot growth was unaffected. Root n' Shoot decreased shoot growth of Begonia, but did not affect root growth. Roots 2 treatments (0.25% or 2.00%) increased shoot weight of Salvia, but did not affect the root growth of Salvia or the root or shoot growth of Begonia. Spraying Grow-plex (0.78% or 1.56%) to runoff at transplanting and 2 weeks after transplanting did not affect root or shoot growth of Salvia or Begonia.

Effects of subsoil acidity on the shoot and root growth of some tropical and temperate forage legumes

1981 ◽  
Vol 32 (3) ◽  
pp. 453 ◽  
Author(s):  
A Pinkerton ◽  
JR Simpson
Keyword(s):  
Root Growth ◽  
Root Length ◽  
Shoot Growth ◽  
Fine Root ◽  
Tropical Species ◽  
Root Weight ◽  
Subsoil Acidity ◽  
Fine Root Length ◽  
Shoot Weight ◽  
Carbonate Species

The root and shoot growth of four tropical and two temperate summer-growing legumes were assessed when plants were grown in deep profiles of an acidic soil modified by additions of calcium carbonate. Species tested over three harvests were Desmodium intortum, Glycine wightii, Stylosanthes humilis (Townsville stylo), Macvoptilium atvopuvpureum (Siratro), Trifolium repens and Medicago sativa (lucerne). There were large and more immediate effects on root growth, particularly on fine root length, than on shoot growth. The species differed in their root responses to lime, the tropical species in general being more tolerant of subsoil acidity than the temperate species. There were marked differences between species in their responses when expressed as the ratio of fine root length to total shoot weight. The ratio of root weight to shoot weight showed much less variation with lime rate, and it is suggested that the ratio of fine root length to shoot weight is the better indicator of tolerance to subsoil acidity. S. humilis showed little response to lime at any time, and was notable for its length of fine root. Siratro grew well at first but later there was little increase in shoot weight or in length of fine root, although tap root weight increased greatly. Roots of D. intorturn, T. repens and lucerne were slow to penetrate beyond 55 cm depth. At later harvests the root lengths of these species and of G. wightii were highly responsive to lime. Agronomic implications of the results are discussed.

Selective Exposure of Yellow Nutsedge (Cyperus esculentus), Purple Nutsedge (Cyperus rotundus), and False Green Kyllinga (Kyllinga gracillima) to Postemergence Herbicides

2012 ◽  
Vol 26 (2) ◽  
pp. 294-299 ◽  
Author(s):  
Travis W. Gannon ◽  
Fred H. Yelverton ◽  
Lane P. Tredway
Keyword(s):  
Selective Exposure ◽  
Cyperus Rotundus ◽  
Future Research ◽  
Root Weight ◽  
Growth Reduction ◽  
Purple Nutsedge ◽  
Yellow Nutsedge ◽  
Shoot Number ◽  
Shoot Weight ◽  
Postemergence Herbicides

Greenhouse experiments were conducted to evaluate the effect of selective herbicide placement on sedge shoot number, shoot weight, and root weight. Sulfentrazone, sulfosulfuron, and trifloxysulfuron were applied to soil only, foliage only, or soil plus foliage. Sulfentrazone provided greater yellow nutsedge and false green kyllinga growth reduction compared to purple nutsedge. Sulfosulfuron provided greater purple nutsedge and false green kyllinga growth reduction compared to yellow nutsedge; these species responded similarly to trifloxysulfuron. Soil and soil plus foliar applications provided the highest level of growth suppression, indicating herbicide–soil contact is required for optimum sedge control with these three herbicides. Future research should evaluate techniques that optimize herbicide–soil contact to improve herbicide efficacy.

scholarly journals An examination on various concentrations of mahkota dewa and meniran extract and liquid organic fertilizer in Centella asiatica shoot growth in vitro

2017 ◽  
Vol 14 (2) ◽  
pp. 47-55
Author(s):  
VENI SISKAYANTI ◽  
RETNA BANDRIYATI ARNIPUTRI ◽  
PRASWANTO PRASWANTO
Keyword(s):  
Shoot Growth ◽  
Organic Fertilizer ◽  
Centella Asiatica ◽  
Shoot Height ◽  
Media Type ◽  
Extract Concentration ◽  
Shoot Number ◽  
Media Types ◽  
The Brain

Siskayanti V, Arniputri RB, Praswanto. 2016. An examination on various concentrations of mahkota dewa and meniran extract and liquid organic fertilizer in Centella asiatica shoot growth in vitro. Biofarmasi 14: 47-55. Centella (Centella asiatica L) is one plant utilized as the traditional medicine because it has many benefits, one of which is to fulfill the brain requirement. The aims of this research was to know of media type, mahkota dewa and meniran extract, concentration of meniran, concentration of mahkota dewa, and concertation of liquid organic fertilizer what as well as shoot growth of Centella using tissue culture and filtering (2k design) that is expected it can be screened of the basic media types, organic material types (mahkota dewa and meniran extract), meniran concentration, mahkota dewa concentration and liquid organic fertilizer concentration. This research was taken place in Plant Physiology and Biotechnology Laboratory of Agriculture Faculty of Sebelas Maret University, from November 2010 to June 2011. This research used 2k design with RAL environment. Factor 1: Media type ( ½ MS and MS); Factor 2: Concentration of liquid organic fertilizer (2 mL/L and 20 mL/L); Factor 3: Concentration of meniran 5 mL/L and 25 mL/L); and Factor 4: Concentration of mahkota dewa (5 mL/L and 25 mL/L). Thus, there is 24 = 16 treatment combinations, each of which is repeated three times. The variables observed are shoot emerging duration, shoot number, shoot height, and leaves number. The data were analyzed descriptively. The result of research showed that basic media MS, that basic media MS, POC 20 mL/L, and meniran extract 5 mL/L provided the best explants growth of Centella through in vitro.

Sign in / Sign up

Export Citation Format

Share Document