scholarly journals Effect of trans-zeatin riboside application on growth of banana (Musa AAA Simmonds) cv. Williams in the juvenile phase

2019 ◽  
Vol 13 (2) ◽  
pp. 161-170
Author(s):  
Luis Gregorio Schiller ◽  
Stanislav Magnitskiy
Keyword(s):  
Plant Growth ◽  
Leaf Area ◽  
Vegetative Growth ◽  
Zeatin Riboside ◽  
Flower Induction ◽  
Leaf Width ◽  
Vegetative Phase ◽  
Juvenile Phase ◽  
Production Zone ◽  
Adenine Derivatives

Cytokinins are physiologically active adenine derivatives that are vital to the regulation of various developmental processes in plants, such as vegetative growth and flower induction. The objective of this study was to understand how the application of cytokinin trans-zeatin riboside affects growth in banana (Musa AAA Simmonds) cv. Williams plants during the vegetative phase on two farms located in the production zone of the Magdalena province, Colombia. The effect of trans-zeatin riboside applications at doses of 0.00, 0.05, 0.25, or 0.45 mg L-1 via foliar spraying was evaluated, with 15 days between the applications, starting with transplant to the field and lasting until 10 weeks of growth. The treatment 0.05 mg L-1 of cytokinin resulted in increases in the plant growth variables, such as height in V, pseudostem diameter, leaf width, and leaf area.

scholarly journals Gibberellin and cytokinin effects on soybean growth

2003 ◽  
Vol 60 (3) ◽  
pp. 537-541 ◽  
Author(s):  
Vagner Maximino Leite ◽  
Ciro Antonio Rosolem ◽  
João Domingos Rodrigues
Keyword(s):  
Plant Growth ◽  
Root Growth ◽  
Leaf Area ◽  
Vegetative Growth ◽  
Seed Treatment ◽  
Dry Matter ◽  
Foliar Application ◽  
Foliar Spray ◽  
Stem Diameter ◽  
Joint Application

Soybean is an important crop in Brazil. Nonetheless, there are no reports on the use of plant growth regulator potential in relation to this crop in the national literature. To better understand the role of these compounds, a pot experiment was carried out to study effects of GA3 and cytokinin on the vegetative growth of the soybean. GA3 (50 mg L-1) was applied as seed treatment, leaving plants with water application as control. GA3 (100 mg L-1) and cytokinin (30 mg L-1) were sprayed on leaves at the physiological stage V3/V4, and 15 days after, cytokinin (30 mg L-1), also as foliar spray. Seed treatment decreased plant emergence and initial soybean root growth, but as the season progressed, differences in root growth disappeared; plants were shorter, and presented a decrease in the number of nodes, in stem diameter, in leaf area and in dry matter yield. Conversely, foliar application of GA3 led to an increase in plant height, first node height and stem diameter. Leaf area and dry matter production also increased as a result of GA3 foliar application. There was no effect of exogenous gibberellin and cytokinin on the number of soybean leaves, number of stem branches and root dry matter. Joint application of gibberellin and cytokinin tended to inhibit gibberellin effects. Cytokinin applied to leaves during soybean vegetative growth was not effective in modifying any of the evaluated plant growth variables.

scholarly journals Perbaikan keragaan bibit jeruk pamelo tanpa biji dengan strangulasi dan aplikasi beberapa dosis dari dua ZPT BAP dan 2,4-D

Kultivasi ◽  
2019 ◽  
Vol 18 (1) ◽  
Author(s):  
Wahyu Fikrinda ◽  
I Made Indra Agastya
Keyword(s):  
Plant Growth ◽  
Leaf Area ◽  
Growth Regulator ◽  
Vegetative Growth ◽  
Plant Growth Regulator ◽  
Block Design ◽  
Canopy Architecture ◽  
Randomized Block Design ◽  
The Wire ◽  
Number Of Branches

Sari Pamelo memiliki prospek yang baik untuk dikembangkan karena buahnya berukuran besar dan memiliki rasa yang segar. Tujuan penelitian ini adalah mempelajari aplikasi strangulasi dan ZPT terbaik dalam merangsang pertumbuhan vegetatif untuk perbaikan keragaan bibit pamelo tanpa biji. Percobaan dilaksanakan pada bulan Maret sampai Juli 2018 di rumah plastik, Laboratorium Agroteknologi, dan Laboratorium Biologi UNITRI, Malang. Rancangan Acak Kelompok (RAK) faktorial dengan dua faktor digunakan pada penelitian ini. Faktor pertama adalah strangulasi ganda dengan jarak antar kawat yang berbeda yaitu 10 cm, dan 15 cm, sedangkan faktor kedua adalah dosis dan jenis zat pengatur tumbuh yang berbeda yaitu tanpa ZPT, BAP 100 ppm, BAP 200 ppm, 2,4-D 100 ppm, dan 2,4-D 400 ppm. Aplikasi strangulasi (pengikatan kawat) dilakukan secara serentak pada bibit pamelo pada April 2018 dan pelepasan kawat dilakukan pada Juni 2018. Berdasarkan analisis ragam yang dilakukan terdapat interaksi antara perlakuan letak strangulasi dengan dosis ZPT pada parameter diameter batang, jumlah tunas, panjang tunas, jumlah daun, luas daun, dan ukuran tajuk pada 1 – 17 minggu setelah perlakuan (MSP). Perlakuan strangulasi ganda 15 cm dan BAP 100 ppm (j2b1) merupakan perlakuan terbaik mampu membentuk tajuk terbuka dengan arsitektur kanopi yang baik sehingga cahaya dapat masuk karena memiliki ukuran tajuk yang paling besar, jumlah daun, luas daun, serta jumlah tunas yang paling banyak dibandingkan dengan perlakuan lainnya sampai 17 MSP. Kata Kunci: arsitektur kanopi, BAP, 2,4-D, pamelo tanpa biji Abstract. Pummelo has prospective to be developed because of its large fruits and fresh taste. The aim of the research was to study the influence of double strangulation and two plant growth regulator to increase vegetative growth and improve performance of Pummelo (Citrus maxima (Brum.) Merr.) seedling. The research was conducted from March to Juli 2018 at plastic house, Laboratory of Agrotechnology, and Laboratory of Biology, Unitri, Malang. Experimental design used completely randomized block design and treatment design was factorial. The first factor was double strangulation with different distance, i.e. 10 cm  and 15 cm, while the second factor was the different dosage and type of growth regulators, i.e. without plant growth regulator, 100 ppm BAP, 200 ppm BAP, 2.4-D 100 ppm, and 2.4-D 200 ppm. Strangulation treatment was conducted on April 8 and wire removed on June 3, 2018. The results showed that there were interaction between the location of strangulation and the dose of plant growth regulator on the parameters diameter of stem, number of branches, length of branches, number of leaves, leaf area, and volume of canopy at 1 - 17 weeks after treatment (WAT). Furthermore, the result showed double strangulation with distance between the wire 15 cm had better significant influence on vegetative growth than double strangulation and the distance between the wire 10 cm. Double strangulation and the distance between the wire 15 cm with BAP 100 ppm treatment was the best treatment on canopy architecture so the light can be used optimally by plant. It was showed by the largest volume of canopy, number of leaf, and leaf area. Besides, the number of branches was the highest if compared to other treatments up to 17 WAT.Keywords: canopy architecture, BAP, 2,4-D, seedless pummelo

scholarly journals Pertumbuhan Dan Kadar Klorofil Tanaman Pakcoy (Brassica rapa L.) Terhadap Cekaman NaCl

2017 ◽  
Vol 10 (02) ◽  
Author(s):  
V. Andriani
Keyword(s):  
Plant Growth ◽  
Root Length ◽  
Soil Condition ◽  
Nacl Stress ◽  
Leaf Width ◽  
Vegetative Phase ◽  
Stress Treatment ◽  
Treatment Variation ◽  
Leaf Chlorophyll ◽  
Number Of Leaves

Gravity salt is a soil condition with excessive amounts of soluble salt and adversely affecting plant growth. A number of agricultural crops are able to survive in areas with high salt. This study aims to determine the growth and content of packed chlorophyll packed NaCl at the beginning of the vegetative phase, and determine how optimal concentration in the growth of pakcoy. The research was conducted in experimental garden and basic laboratory of Faculty of Mathematics and Natural Sciences UNIPA Surabaya. The research design was using Random Random Complete with NaCl stress treatment variation. Variation of low NaCl stress treatment consisted of control watered with water (N0), initial NaCl 50 mM + continued 150 mM (N1), initial NaCl 75 mM + continued 150 mM (N2), initial NaCl 100 mM + continued 150 mM (N3), initial NaCl 125 mM + continued 150 mM (N4), and initial NaCl 150 mM + continued 150 mM (N5). Parameters observed were plant growth (plant height, leaf number, leaf width, and root length and biochemistry (leaf chlorophyll) .The quantitative data obtained were analyzed using ANOVA and followed by DMRT test at 95% confidence level.The results showed that the NaCl stress treatment low at the beginning of the vegetative phase raising the height of the plant, the number of leaves, leaf width, root length and the highest leaf chlorophyll content in N1.   Keywords: NaCl stress, pakcoy, growth, chlorophyll, vegetative phase

scholarly journals Effect of Foliar Application of Plant Growth Regulators on Vegetative Growth of Medicinal Plant Simarouba glauca DC

2019 ◽  
pp. 128-133
Author(s):  
Patil Manasi S. ◽  
Gaikwad D. K.
Keyword(s):  
Plant Growth ◽  
Leaf Area ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Vegetative Growth ◽  
Foliar Application ◽  
Dry Weight ◽  
Number Of Leaves ◽  
Pharmaceutical Industries ◽  
Simarouba Glauca

Field experiment was carried out to investigate effect of foliar application of Plant Growth Regulators (PGRs) like 6-benzylaminopurine (6-BA), gibberellic acid (GA), chlormequat(CCC), salicylic acid (SA), cysteine and methionine with 5 and 20 ppm concentration on vegetative growth of Simarouba glauca DC. Foliar application of both concentrations of all the PGRs promoted root length, shoot length, height of plant, number of leaves per plant, leaf area, fresh and dry weight of leaf, stem, root and fresh and dry weight per plant. The significant increase in plant height, leaf area and dry weight were obtained in plants treated with GA, SA and methionine while 5ppm GA gave highest number of leaves per plant. This will improve the availability of plant biomass for extraction of various bio active molecules in pharmaceutical industries.

scholarly journals Rock-Solubilizing Microbial Inoculums Have Enormous Potential as Ecological Remediation Agents to Promote Plant Growth

Forests ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 357
Author(s):  
Zhaohui Jia ◽  
Miaojing Meng ◽  
Chong Li ◽  
Bo Zhang ◽  
Lu Zhai ◽  
...  
Keyword(s):  
Plant Growth ◽  
Leaf Area ◽  
Ecological Restoration ◽  
Root Nodules ◽  
Robinia Pseudoacacia ◽  
Growth Index ◽  
Nodule Formation ◽  
Bare Rock ◽  
Mining Sites ◽  
Robinia Pseudoacacia L

Anthropogenic overexploitation poses significant threats to the ecosystems that surround mining sites, which also have tremendous negative impacts on human health and society safety. The technological capacity of the ecological restoration of mine sites is imminent, however, it remains a challenge to sustain the green restorative effects of ecological reconstruction. As a promising and environmentally friendly method, the use of microbial technologies to improve existing ecological restoration strategies have shown to be effective. Nonetheless, research into the mechanisms and influences of rock-solubilizing microbial inoculums on plant growth is negligible and the lack of this knowledge inhibits the broader application of this technology. We compared the effects of rock-solubilizing microbial inoculums on two plant species. The results revealed that rock-solubilizing microbial inoculums significantly increased the number of nodules and the total nodule volume of Robinia pseudoacacia L. but not of Lespedeza bicolor Turcz. The reason of the opposite reactions is possibly because the growth of R. pseudoacacia was significantly correlated with nodule formation, whereas L. bicolor’s growth index was more closely related to soil characteristics and if soil nitrogen content was sufficient to support its growth. Further, we found that soil sucrase activity contributed the most to the height of R. pseudoacacia, and the total volume of root nodules contributed most to its ground diameter and leaf area. Differently, we found a high contribution of total soil carbon to seedling height and ground diameter of L. bicolor, and the soil phosphatase activity contributed the most to the L. bicolor’ s leaf area. Our work suggests that the addition of rock-solubilizing microbial inoculums can enhance the supply capacity of soil nutrients and the ability of plants to take up nutrients for the promotion of plant growth. Altogether, our study provides technical support for the practical application of rock-solubilizing microbes on bare rock in the future.

scholarly journals HYL1 controls the miR156-mediated juvenile phase of vegetative growth

2012 ◽  
Vol 63 (7) ◽  
pp. 2787-2798 ◽  
Author(s):  
Shuxia Li ◽  
Xi Yang ◽  
Feijie Wu ◽  
Yuke He
Keyword(s):  
Vegetative Growth ◽  
Juvenile Phase

The influence of seed size and depth of sowing on pre-emergence and early vegetative growth of subterranean clover (Trifolium subterraneum L.)

1956 ◽  
Vol 7 (2) ◽  
pp. 98 ◽  
Author(s):  
JN Black
Keyword(s):  
Leaf Area ◽  
Seed Size ◽  
Vegetative Growth ◽  
Dry Matter ◽  
Relative Rate ◽  
Subterranean Clover ◽  
Trifolium Subterraneum ◽  
Dry Weight ◽  
Total Leaf Area ◽  
Pot Culture

Changes in the pre-emergence distribution of dry matter in subterranean clover (Trifolium subterraneum L.) variety Bacchus Marsh were followed at 21°C, using three sizes of seed and three depths of sowing, ½, 1¼, and 2 in. Decreasing seed size and increasing depth of sowing both reduce the weight of the cotyledons a t emergence. Seed of the three sizes were sown a t three depths in pot culture a t staggered intervals so that emergence was simultaneous. Dry weight in the early vegetative stage was proportional to seed size, and total leaf area and leaf numbers showed similar trends. Plants of each seed size grew at the same relative rate. No effect of depth of sowing could be detected, and this was shown to be due to the cotyledon area a t emergence being constant for any given seed size, regardless of varying depth of sowing and hence of cotyledon weight. It was concluded that seed size in a plant having epigeal germination and without endosperm is of importance: firstly, in limiting the maximum hypocotyl elongation and hence depth of sowing, and secondly, in determining cotyledon area. Cotyledon area in turn influences seedling growth, which is not affected by cotyledon weight. Once emergence has taken place, cotyledonary reserves are of no further significance in the growth of the plants.

scholarly journals Size-dependent allocation of biomass to ancillary versus flowers of the inflorescences of the epiphyte Tillandsia stricta Soland (Bromeliaceae)

2009 ◽  
Vol 23 (1) ◽  
pp. 130-135 ◽  
Author(s):  
André Mantovani ◽  
Ricardo Rios Iglesias
Keyword(s):  
Leaf Area ◽  
Plant Species ◽  
Vegetative Growth ◽  
Reproductive Investment ◽  
Plant Size ◽  
Reproductive Allocation ◽  
Heterogeneous Environment ◽  
Plant Resources ◽  
Total Leaf Area ◽  
Size Dependent

The amount of resources invested in reproduction is closely correlated to plant size. However, the increase in reproductive investment is not always proportional to the increase in vegetative growth, as the proportion of plant resources allocated to reproduction can increase, decrease or be maintained along different plant sizes. Although comprising thousand of species, epiphytes are poorly studied in relation to reproductive allocation (RA). We describe the variation in the RA of the epiphytic bromeliad Tillandsia stricta Soland with increasing plant sizes. Our goal is not only to evaluate the RA of the whole inflorescence but also quantify the contribution of ancillary structures in the final RA of this plant species. With increasing sizes of T. stricta the reproductive allocation of biomass to the whole inflorescence decreased significantly along plant sizes from 37% to 12%. Reproductive allocation to ancillary and to flowers decreased respectively from 30% to 9% and 10% to 3%. As leaves are the main source of water and nutrients absorption in atmospheric Tillandsia, the total leaf area and area per leaf were used as indicators of foraging capacity, that also increased with plant size. We discuss these results with respect to the capacity of T. stricta to reproduce in the heterogeneous environment of the canopies.

scholarly journals Yield and vegetative growth of cactus pear at different spacings and under chemical fertilizations

2016 ◽  
Vol 20 (6) ◽  
pp. 564-569 ◽  
Author(s):  
João A. da Silva ◽  
Sérgio L. R. Donato ◽  
Paulo E. R. Donato ◽  
Evilasio dos S. Souza ◽  
Milton C. Padilha Júnior ◽  
...  
Keyword(s):  
Plant Growth ◽  
Plant Height ◽  
Vegetative Growth ◽  
Dry Matter ◽  
Block Design ◽  
Plant Age ◽  
Cactus Pear ◽  
Area Index ◽  
Randomized Block Design

ABSTRACT The objective was to evaluate the effect of different spacings and mineral fertilizations on cactus pear growth and production in a randomized block design, with three replicates, in a 3 x 4 factorial scheme: three spacings, 1.00 x 0.50 m, 2.00 x 0.25 m and 3.00 x 1.00 x 0.25 m, and four fertilizations, 000-000-000, 000-150-000, 200-150-000 and 200-150-100 kg ha-1 of N, P2O5 and K2O, respectively. Plant growth was evaluated between 90 and 390 days and production and growth were evaluated at 620 days after planting. There were significant interactions between spacing and fertilization for plant height, number of cladodes and cladode area index from 90 to 390 days and for production of fresh and dry matter at 620 days after planting. Spacing influenced cladode area index, while fertilization influenced plant height, number of cladodes and cladode area index at 620 days after planting. Plant height showed cubic effect for the days after planting. Number of cladodes and cladode area index were dependent on spacing, fertilization and plant age, and fitted to cubic models. The best results of growth and production of fresh and dry matter are associated with NPK and NP fertilizations and the spacing of 1.00 x 0.50 m.

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