scholarly journals Effect of growth regulators (IBA and NAA) on rooting and survival of guava air layers

2021 ◽  
Vol 17 (AAEBSSD) ◽  
pp. 159-162
Author(s):  
Pooja Ojha ◽  
Sreekunwar ◽  
Jaideep Singh Bhadauriya ◽  
Shivkumar Singh Bhadauria ◽  
Rajesh Lekhi

The present investigation was conducted at Fruit Nursery, Department of Horticulture, College of Agriculture, Gwalior during the year 2015-16 on guava cv. Gwalior-27. The treatment combinations comprised with four concentration of IBA viz., 0ppm (I0), 7500ppm (I1), 10000ppm (I2) and 15000ppm (I3) and four concentration of NAA viz., 0ppm (B0), 50ppm (N1), 100ppm (N2) and 150ppm (N3). Results revealed that higher concentration of IBA (15000 ppm) and NAA (150 ppm) gave significantly highest results on callusing, number of primary and secondary roots, root weight per air layer, rooting and survival percentage over other lower concentrations while, combined application of higher concentration of both the growth regulators (I3N3) also gave higher results for all the parameters however, it was statistically at par with application of IBA @ 15000 ppm + NAA @ 100 ppm (I3N2) for all the parameters except survival percentage.

2020 ◽  
Vol 34 (03) ◽  
Author(s):  
Niharika Rathore ◽  
R. Lekhi ◽  
Arjun Kashyap ◽  
P. K.S. Gurjar

An experiment was conducted during 2017-18 at the Research orchard of Horticulture, college of Agriculture Gwalior to Study of interaction Effect of different colour poly wrappers and PBZ concentration on rooting and growth of Guava air layers. Total 12 treatment were tested under experiment. Result related that maximum length of primary root, length of secondary root, diameters of primary root, diameters of secondary root, fresh weight of root, dry weight of root, rooting %, number of leaves, number of new sprout, length of air layers, and survival percentage of air layers of guava was observed under Red poly wrapper with 500ppm PBZ. Which was significantly higher then other treatment combination follow by Blue poly wrapper with 500ppm PBZ and result of black poly wrappers and the lowest result found in white wrapper with co (No harmon) PBZ.


HortScience ◽  
2005 ◽  
Vol 40 (4) ◽  
pp. 1038B-1038
Author(s):  
Sushobitbir Singh Thind ◽  
Harmander Pal Singh ◽  
Sukhdev Singh

Peach [Prunus persica Batsch. (L.)] is a major fruit of northern India, which is commercially propagated through stem cuttings. There is a scarcity of information available on the effect of plant growth regulators (PGRs) and time of plantings on rooting of peach stem cuttings. Studies were conducted to learn the effects of various PGRs and planting times on stem cuttings of peach cv. Shan-i-Punjab at the fruit nursery of the Horticulture Department, Khalsa College, Amritsar, India, in 2001 and 2002. The study on stem cuttings, taken from the middle portion of the shoot, compared three PGRs: indolebutyric acid (IBA), indoleacetic acid (IAA), and naphthaleneacetic acid (NAA), each at concentrations of 50, 100, and 200 mg·L-1 and two planting dates (20 Dec. and 20 Jan.). Cuttings were treated for 24 hours before keeping under moist sand for 1 month for callusing. Callused cuttings were planted in the field. Measurements on sprouting percentage, survival percentage, plant height, shoot diameter, number of leaves per plant, leaf size, average root length, and root weight per cutting were recorded. The study showed that, overall, auxins had significant effect on the success and rooting character of peach plants over the control. The greatest sprouting and survival percentage, plant height, leaf area, and shoot diameter was exhibited by IBA followed by IAA and NAA. IBA at 100 ppm proved to be the most suitable PGR for improving success along with other rooting and vegetative characters of the plant. The cuttings planted on 20 Dec. gave a higher percentage of success (55.32%) over those planted on 20 Jan. (33.04 %), during both years of study. The other plant characteristics, such as average root length, plant height, leaf area, and plant height, of cuttings planted on 20 Dec. also showed greater success during both years.


Author(s):  
Shubham Singh Rathour ◽  
K. S. Tomar ◽  
. Poonam ◽  
Shubham Bhadoriya ◽  
R. S. Katoriya

Study Design:  Randomized Block Design. Place and Duration of Study: Department of Horticulture, College of Agriculture, RVSKVV, Gwalior, MP between 2018 - 2019. Methodology:In 2018-19 the study conducted amidst rainy season and Gird agro-climatic context of Madhya Pradesh to evaluate the effect of phytohormones on rooting and establishment of seedless lemon air layers. Experiment consisting nine treatments replicated three times under Randomized Block Design. Treatments comprising of two plant hormones namely IBA and NAA each with four concentration levels i.e. 1250, 2500, 3750 and 5000ppm including control. Plants age were seven years. Results:The results revealed maximal rooting percentage (92.00), number of primary roots (22.72) and secondary roots (49.97), length of primary roots (5.05 cm) and secondary roots (2.25 cm), diameter of primary roots (1.68 mm) and secondary roots (0.84 mm) and dry weight of roots (2.32g) and planted air-layers (89.21 %) were recorded with application of IBA @ 5000ppm. Conclusion:Indole-3-butyric acid performed better than naphthalene acetic acid for promoting rooting and establishment in seedless lemon air-layers. Application of IBA @ 5000ppm significantly increased rooting characters followed by NAA @5000ppm for better establishment of Lemon air layers for its propagation.


2005 ◽  
Vol 2 (4) ◽  
pp. 574-580
Author(s):  
Baghdad Science Journal

The research was conducted in the Department of Horticulture College of Agriculture, University of Baghdad for two seasons 1999-2000 on cultivars pomegranate Salimi and narrators seedless to study the effect of growth regulators in the amount of winning and some qualities included experience 9 transactions and three replicates per treatment used experience global Dhant design sectors full randomization carried out transactions in the two datesfirst at the onset of flowering and the second after 70 m results showed superior product Salimi Rawa


2016 ◽  
Vol 47 (3) ◽  
Author(s):  
Khrbeet & Al-Beiruty

A field experiment was conducted at the experimental farm, College of Agriculture, Abu-Ghraib, Baghdad, Iraq during the period from mid. of March 2012 to mid. of July 2014 to investigate the effects of plant growth regulators and foliar application stages on ovules abortion, seed set and its germination of two alfalfa cultivars. Layout of the experiment was R.C.B.D. arranged in split-split plot with three replications. Cultivars (local and hamedan) were assigned as a main plot and foliar application stages (vegetative growth, flower buds emergence, 50% flowering and 80% flowering) were assigned as sub-plots, while growth regulators (Alar, Ethephon, Naphthalene acetic acid(NAA) and control treatment) were assigned in the sub-sub-plots. Result showed that there were no significant differences between cultivars in all traits. Foliar application of NAA increased No. of ovules per floret (9.11) compare with other treatments, but it was not significantly different compare with Alar. In 1st and 2nd seed crop, plants sprayed with Alar at flower buds emergence stage gave highest seed set (5.17, 6.93) respectively. Percentage of ovules abortion significantly influenced by growth regulaters, folair application stages and their interaction. Since, foliar application of Alar at beginning of flower buds emergence reduce % of ovules abortion (30.89). In general, plants sprayed at vegetation growth stage increased % of seed germination. It was clear from this study that more than 40% of ovules were aborted, this may be one of the reasons for reduction of seed yield in alfalfa, therefore, we recommended to do more researches in this field in order to know the causes of ovules abortion.


Author(s):  
N.I. Sidelnikov ◽  
◽  
O.A. Bykova ◽  
R.R. Tkhaganov ◽  
◽  
...  

In the Western Ciscaucasia, frequent droughts lead to a decrease in the yield of Echinacea purpurea L., which is a base for immunostimulating preparations. It is possible to mitigate the effect of sharp fluctuations in weather conditions by using growth regulators and microfertilizers, the exogenous application of which allows mobilizing the potential capabilities of the plant organism aimed at increasing its bioproductivity. The purpose of the research was to study the effect of foliar application the growth regulator Zircon and silicon-containing microfertilizer Siliplant on the yield of Echinacea biomass depending on the weather conditions. The weather conditions during the research years differed. Thus, in 2011– 2014, the average daily air temperatures and the amount of precipitation from May to July were almost at the level of the average annual values. And starting from 2015 there has been a significant increase in temperatures and a decrease in moisture availability. Foliar treatment of Echinacea purpurea with Zircon and Siliplant under drought ensured an increase in the biomass yield by 15–20% compared to the control, under stable weather conditions – by 11–18%. Their combined application increased the yield of the green weight by 24–31%, under stable weather conditions – by 18–24%. The high efficiency of the preparations was manifested in the growth of the root system under drought conditions, where the increase in yield was 40–43% at their combined application. The content of hydroxycinnamic acids in the raw material increased by 4–6% regardless of weather conditions and by 9– 10% in the variant Siliplant + Zircon application. Losses of biomass yield under hydrothermal stress amounted to 1–10%, of roots – 4–5%, while in the control the values were 15–25 and 18%, respectively. The biggest preservation of the yield was noted in the Siliplant + Zircon variant, where there was even a small increase in biomass yield – by 4–9%, in roots – by 4%.


2016 ◽  
Vol 8 (2) ◽  
pp. 535-540
Author(s):  
Priyadarshani P. Mohapatra ◽  
V.K. Batra ◽  
Subhash Kajla ◽  
Anil K. Poonia ◽  
N. Manoj Kumar

In the present investigation, experiment was conducted for in vitro micro-propagation with different concentration of growth regulators in different explants Sprouts and Shoot tips of potato cultivar Kufri Frysona. The maximum survival percentage (40) of sprouts and (100%) of shoot tips were obtained when the explants were surface sterilized with 0.2% bavistin & 0.4% streptocyclin (45minutes) and 0.1% mercuric chloride (60seconds). Sterilized explants were inoculated on MS basal supplemented with various growth regulators and established successfully. The maximum shoot induction (62.5±1.44%) in 11.3±0.33 days and (74.0 ± 2.13 %) in 10.0 ± 0.50 days were reported on medium PM1 (BAP 0.25 mg/l) in sprouts and shoot tip explants respectively. The sprouted explants were further sub-cultured on MS media supplemented with various growth regulator alone and in combination for in vitro multiplication. In Kufri Frysona (11.2) shoots were obtained on MS medium fortified with 0.25mg/l BAP + 0.01mg/l IAA on 42th day of subculture. In vitro rooting was observed on MS basal medium supplemented with 2.0 mg/l NAA in Kufri Frysona after 10 days. Rooted plantlets were successfully hardened in green house using different types of potting mixture and finally transferred to field. The protocol will be very useful for large-scale production of disease free planting material of potato (S. tuberosum) in future.


Author(s):  
Manisha Meena ◽  
Gajanand Jat ◽  
R.H. Meena ◽  
Roshan Choudhary ◽  
Devendra Jain ◽  
...  

Background: Phosphorus (P) and zinc (Zn) are essential plant nutrients and their deficiency in soils has the adverse effect on the crop productivity, moreover the antagonistic effect of P on Zn is also important study aspect. Hence, the present investigation was carried out to study the effect of phospho enriched compost and zinc on productivity, nutrient content and uptake of Blackgram (Vigna mungo L.) in Sub-humid Southern Hills and Aravalli region of Rajasthan. Methods: The experiment was undertaken during Kharif 2018 at Rajasthan College of agriculture, Udaipur (Rajasthan). The treatments comprised of four levels of phospho enriched compost (PEC) i.e. control, PEC @ 2.0, 4.0 and 6.0 t ha-1 and four levels of zinc i.e. control, Zn @ 2.0, 4.0 and 6.0 kg ha-1. The experiment was laid out in a factorial randomized block design with three replications.Result: The increasing levels of phospho enriched compost and zinc upto 4 t ha-1 and 4 kg ha-1, respectively increased significantly (P=0.05) the number of nodules per plant, number of pods per plant, number of seeds per pod, test weight, seed yield, stover yield, nutrient content (N, K and Zn) and uptake (N, P, K and Zn) in seed and stover of blackgram. Whereas, the application of zinc significantly decreased the phosphorus content in seed and stover as compared to control. However, the combined application of phospho enriched compost @ 6 t ha-1 along with zinc @ 6 kg ha-1 was found to record higher seed and stover yield. The application of phospho enriched compost @ 4 t ha-1 and zinc @ 4 kg ha-1 along with the recommended dose of fertilizer results in significantly higher productivity, nutrient content and uptake of blackgram under Typic Haplustepts soil. 


Author(s):  
Abhishek . ◽  
H.S. Purohit ◽  
Gajanand Jat ◽  
R.S. Choudhary ◽  
R.H. Meena ◽  
...  

Background: Enriched composts supply the plant nutrients and add a sufficient amount of organic matter to the soil, which helps in improving the physical, chemical and biological properties of the soil. It helps to maintain and sustain soil fertility for enhancing crop productivity and also acts as a recess for microbes and enriches the soil with a variety of the indigenous micro-flora and fauna. Hence, the present investigation was carried out to study the effect of fertility levels and enriched compost on productivity, quality and profitability of soybean (Glycine max L.) in sub-humid southern plain and Aravalli hills region of Rajasthan. Methods: The experiment was undertaken during kharif 2018 at Rajasthan College of agriculture, Udaipur (Rajasthan) in a factorial randomized block design with three replications. The treatments were comprised of three levels of recommended dose of fertilizers (RDF) (control, 50% RDF and 100% RDF) and four levels of enriched compost (control, 2.0, 4.0 and 6.0 t ha-1). Result: The increasing fertility levels upto 100% RDF and enriched compost upto 4 t ha-1, significantly increased (P=0.05) the plant height, dry matter accumulation, number of pods per plant, number of seeds per pod, seed yield, haulm yield and protein and oil content in seed of soybean. However, the combined application of 100% RDF along with 6 t ha-1 enriched compost recorded higher seed and haulm yield. The results further revealed that the application of 100% RDF and 4 t ha-1 enriched compost significantly improved the productivity, quality and profitability of soybean under Typic Haplustepts soil.


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