Tolerance of Hyacinth (Hyacinthus orientalis L. c.v. “Blue Star”) to Lead Contaminated Media

The objective of this study was to determine the tolerance of hyacinth (Hyacinthus orientalis L. c.v. “Blue Star”) as a hyper accumulator plant to lead contaminated media. This research was carried out in a completely randomized experimental design with three replications in green house conditions. Four doses of lead (control, 20 mg kg-, 40 mg kg-1, 80 mg kg-1) were applied to each growing media having 500 g soil: sand mixture in 2:1 ratio. The distillate water was used in irrigation and Hoagland solution was applied for fertilization. At the end of the experiment, effects of lead applications on all of plant growth criteria and flowering were found significant (P<0.01) except leaf number and stem diameter. The lowest first flowering time, full flowering time and first floret withering time were obtained as 77.00 day, 79.20 day and 82.39 day in control, respectively. The highest plant length and flower length were obtained as 229.91 mm and 146.36 mm in 20 mg Pb kg-1 application. The highest flower diameter and floret number were found as 63.03 mm and 42.42 in 40 mg Pb kg-1 application. Generally, while the lead doses increased flowering time, leaf length, plant length, flower length, flower diameter and floret number increased.

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Tolerance of Daffodil (Narcissus poeticus L. c.v. “Ice Folies”) to Nickel Contaminated Media

ISPEC Journal of Agricultural Sciences ◽

10.46291/ispecjasvol4iss1pp105-112 ◽

2020 ◽

Vol 4 (1) ◽

pp. 105-112

Author(s):

Arzu ÇIĞ

Keyword(s):

Experimental Design ◽

Flowering Time ◽

Leaf Length ◽

Stem Diameter ◽

Hoagland Solution ◽

Full Flowering ◽

Narcissus Poeticus ◽

Flower Diameter ◽

Hyperaccumulator Plant ◽

Plant Length

The objective of this study was to determine the tolerance of daffodil (Narcissus poeticus L. c.v. “Ice Folies”) as a hyperaccumulator plant to nickel contaminated media. This research was carried out in a completely randomized plot experimental design with three replications in green house conditions. Four doses of nickel (control, 25 mg kg-1, 50 mg kg-1, 75 mg kg-1) were applied to each growing media having 500 g soil:sand mixture in 2:1 ratio. The distillate water was used in irrigation and Hoagland solution was applied for fertilization. At the end of the experiment, effects of nickel applications on leaf length, plant length, flower length (P<0.01) and flower diameter, stem diameter (P<0.05) were found significant, except leaf number and leaf length. The lowest first flowering time, full flowering time and first floret withering time were obtained in control and 75 mg kg-1 nickel application. The highest leaf length (341.60 mm), plant length (418.24 mm), flower length (70.74 mm) and stem diameter (7.63 mm) were obtained in 75 mg kg-1 nickel application. The highest flower diameter was found as 78.35 mm in 25 mg kg-1 nickel application. Generally, while the nickel doses increased flowering time, leaf length, plant length, flower length and flower diameter increased.

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A STUDY ON PLANT HEIGHT CONTROL OF IRIS FLOWERS

AGROFOR ◽

10.7251/agreng1803131d ◽

2019 ◽

Vol 3 (3) ◽

Author(s):

Sevim DEMİR ◽

Fisun Gürsel ÇELİKEL

Keyword(s):

Flowering Time ◽

Chlorophyll Content ◽

Plant Height ◽

Untreated Control ◽

Unit Area ◽

Leaf Length ◽

Height Control ◽

Flower Diameter

We investigated the effect of paclobutrazol as preplant bulb soaks on plant heightof Iris x hollandica cv. ‘Frans Hals’ and ‘Blue Magic’cultivars which were grownin pots. Bulbs of iris were soaked into gibberellin inhibitor paclobutrazol solutionat 0, 15, 30 ppm before planting. Effect of paclobutrazol on the flowering time,flower diameter and length, leaf length, plant height, flower life, and chlorophyllcontent of leaves were determined. The shortest plant height was obtained from the‘Blue Magic’ cultivar treated with 30 ppm paclobutrazol which gave plants with11.3 cm, 68% shorter than untreated control. ‘Frans Hals’ cultivar treated with 30ppm paclobutrazol was 20.9 cm and 50% shorter than control. In ‘Blue Magic’ and‘Frans Hals’cultivars the lower dose of 15 ppm paclobutrazol were also effectiveon height control with 11.8 and 21.5 cm plant height, respectively. This gibberellininhibitor also shortened the leaf length of iris cultivars. Paclobutrazol treatmentsresulted in higher chlorophyll content per unit area in the leaves. The highestchlorophyll content (57.00 CCI) was obtained from the ‘Blue Magic’ iris treatedwith 30 ppm paclobutrazol, while the control plants had 32.70 CCI chlorophyll intheir leaves. Chlorophyll content of ‘Frans Hals’ treated with 30 ppm paclobutrazolwere 52.87 CCI, while control plants of this cultivar were 28.80 CCI. Plantsapplied with paclobutrazol resulted with smaller flower diameter compared to thecontrol plants of both cultivars. The smallest flower diameter was obtained from 30ppm paclobutrazol treatment with 38.83 mm in ‘Blue Magic’ iris while the controlof this cultivar was 99.63 mm. The flower diameter of ‘Frans Hals’ cultivar treatedwith 30 ppm paclobutrazol was 109.1 mm, while the control one was 112 mm.

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PLANT HEIGHT CONTROL OF HYACINTHUS ORIENTALIS BY GIBBERELLIN INHIBITORS

AGROFOR ◽

10.7251/agreng1902085d ◽

2021 ◽

Vol 4 (2) ◽

Author(s):

Sevim DEMİR ◽

Fisun Gürsel ÇELİKEL

Keyword(s):

Chlorophyll Content ◽

Plant Height ◽

Unit Area ◽

Leaf Length ◽

Home Office ◽

Height Control ◽

Content Index ◽

Flower Diameter ◽

Hyacinthus Orientalis ◽

Production Period

In this study, effect of gibberellin inhibtors as preplant bulb soaks on plant height of Hyacinthus orientalis cv. ‘Jan Bos’ grown in pots were investigated. Bulbs of hyacints were soaked in flurprimidol at 0, 10, 20 ppm and paclobutrazol at 0, 100, 200 ppm before planting. Effect of gibberellin inhibitors on the flowering time, flower diameter and length, leaf length, plant height, flower life, chlorophyll content of leaves were determined. In addition, after hyacints grown in pots in the greenhouse arrived at the sales stage to determine the changes that occur in the plant height, plants were taken to the laboratory where temperature was held constant at 20 °C. The shortest plant height was obtained from the 200 ppm paclobutrazol and 20 ppm flurprimidol treatment as given bulb soaks. In this treatments, plant heihgt was 7.33 and 8.61 cm and were 49% , 41% shorter than untreated control. The lower dose of 10 ppm flurprimidol and 100 ppm paclobutrazol were also effective on height control with 9.11 and 9.71 cm plant height, respectively. Gibberellin inhibitors also shortened leaf lenght. Flurprimidol and paclobutrazol treatments resulted in higher chlorophyll content per unit area in the leaves than untreated controls. The highest chlorophyll contetnt was obtained from the plants treated 200 ppm paclobutrazol with 83.36 CCI (Chlorophyll content index), while the control was 50.56 CCI. The effects of treatments on plant height were maintained in lab conditions (home-office). The shortest plant height was obtained from 200 paclobutrazol treatment with 9.75 cm, while the control was 21.5 cm during post production period.

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Effect of plant density on stem and flower quality of single-stem ornamental sunflower genotypes

Horticultural Science ◽

10.17221/10/2019-hortsci ◽

2020 ◽

Vol 47 (No. 1) ◽

pp. 45-52

Author(s):

Emina Mladenović ◽

Sandra Cvejić ◽

Siniša Jocić ◽

Nemanja Ćuk ◽

Jelena Čukanović ◽

...

Keyword(s):

Flowering Time ◽

Total Variation ◽

Plant Density ◽

Planting Density ◽

Stem Length ◽

Production Cycle ◽

Cut Flowers ◽

Ammi Analysis ◽

Flower Diameter ◽

Flower Quality

The aim of this research was to determine the optimum planting density for the production of high-quality cut flowers with desirable characteristics. 25 single-stem ornamental sunflower genotypes were planted at different densities and evaluated for flowering time, flower diameter, and stem circumference and length over a two-year production cycle. Three spacing patterns were used: 25 × 25 cm, 30 × 30 cm, and 70 × 30 cm, which led to the planting densities of 160 000, 90 000, and 60 000 plants/ha, respectively. The plant density had the most important effect on the stem circumference, flower diameter, and stem length (total variation 52, 60, and 58%, AMMI analysis) and a small effect on the flowering time (total variation 1%, AMMI analysis). Based on environment-focused scaling, all high-density environments could be suitable for the production of single-stem sunflower genotypes. The results demonstrated the adaptation of several sunflower genotypes G9, G11, G12, G21, and G22 as the most suitable based on the optimum flower diameter, stem circumference, and stem length. These results may lead to progress in growing ornamental sunflowers as a cut flower.

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Line×tester analysis in lilium×formolongi: identification of superior parents for growth and flowering traits

SAARC Journal of Agriculture ◽

10.3329/sja.v17i1.42770 ◽

2019 ◽

Vol 17 (1) ◽

pp. 175-187

Author(s):

R Rai ◽

J Shrestha ◽

JH Kim

Keyword(s):

Plant Height ◽

Gene Action ◽

Block Design ◽

Leaf Length ◽

Stem Diameter ◽

Leaf Width ◽

Days To Flowering ◽

Flower Diameter ◽

Number Of Leaves ◽

Almost All

An experiment was carried out using eight double cross F1s (DCF1s) as lines and two testers to obtain sixteen Line ×Tester hybrids for the evaluation of major growth and flowering traits thereby to understand the breeding potentiality of the parental lines. The performance of growth and flowering traits of all twenty-six genotypes were evaluated in a randomized complete block design (RCBD) with three replications. The analysis of variance (ANOVA) showed all the genotypes were significantly different for all agro-morphological traits under study. The estimated general combining ability (GCA) effects showed that parent 5(P5), were superior for plant height, stem diameter, number of leaves, leaf length, days to flowering and attitude of floral axis followed by parent 2(P2) for leaf length, leaf width, days to flowering and attitude of floral axis and parent7 (P7) for number of flower, flower diameter, bud length and attitude for floral axis. Likewise; tester 1 found to be best combiner with significant GCA effect for almost all growth and flowering traits (except number of leaves). The plant height, leaf width, number of flower and attitude of floral axis showed prevailing additive gene action while stem diameter, number of leaves, leaf length, days to flowering, flower diameter and bud length indicated predominance of dominance gene action. We can conclude that parent P5, parent P2 and parent P7 can be used as good mother lines and the tester 1, as good donor for the seed production. SAARC J. Agri., 17(1): 175-187 (2019)

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Identification of Quantitative Trait Loci Relating to Flowering Time, Flag Leaf and Awn Characteristics in a Novel Triticum dicoccum Mapping Population

Plants ◽

10.3390/plants9070829 ◽

2020 ◽

Vol 9 (7) ◽

pp. 829

Author(s):

Tally I.C. Wright ◽

Angela C. Burnett ◽

Howard Griffiths ◽

Maxime Kadner ◽

James S. Powell ◽

...

Keyword(s):

Genetic Diversity ◽

Quantitative Trait Loci ◽

Flowering Time ◽

Quantitative Trait ◽

Marker Assisted Selection ◽

Mapping Population ◽

Flag Leaf ◽

Snp Array ◽

Leaf Length ◽

Trait Loci

Tetraploid landraces of wheat harbour genetic diversity that could be introgressed into modern bread wheat with the aid of marker-assisted selection to address the genetic diversity bottleneck in the breeding genepool. A novel bi-parental Triticum turgidum ssp. dicoccum Schrank mapping population was created from a cross between two landrace accessions differing for multiple physiological traits. The population was phenotyped for traits hypothesised to be proxies for characteristics associated with improved photosynthesis or drought tolerance, including flowering time, awn length, flag leaf length and width, and stomatal and trichome density. The mapping individuals and parents were genotyped with the 35K Wheat Breeders’ single nucleotide polymorphism (SNP) array. A genetic linkage map was constructed from 104 F4 individuals, consisting of 2066 SNPs with a total length of 3295 cM and an average spacing of 1.6 cM. Using the population, 10 quantitative trait loci (QTLs) for five traits were identified in two years of trials. Three consistent QTLs were identified over both trials for awn length, flowering time and flag leaf width, on chromosomes 4A, 7B and 5B, respectively. The awn length and flowering time QTLs correspond with the major loci Hd and Vrn-B3, respectively. The identified marker-trait associations could be developed for marker-assisted selection, to aid the introgression of diversity from a tetraploid source into modern wheat for potential physiological trait improvement.

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Selection of soybean (Glycine max (L.) Merril) genotypes for cultivation in the Brazilian Brejo Paraibano

Agronomía Colombiana ◽

10.15446/agron.colomb.v38n2.80842 ◽

2020 ◽

Vol 38 (2) ◽

pp. 171-177

Author(s):

Guilherme Chaves de Holanda ◽

Lais Tomaz Ferreira ◽

Felipe Da Silva Lopes ◽

Naysa Flávia Ferreira do Nascimento

Keyword(s):

Genotypic Variation ◽

Leaf Width ◽

Hypocotyl Length ◽

Randomized Experimental Design ◽

Soybean Genotypes ◽

Flower Diameter ◽

Glycine Max L ◽

Parental Material ◽

Seed Width ◽

Maturity Degree

Soybeans have great commercial value and there are still regions with no indications of promising genotypes, such as Brejo Paraibano region. The objective of this study was to analyze the adaptability of 20 soybean genotypes selected with a relative maturity degree above 9. The genotypes used were: M8867RR, M8766RR, M9144RR, SYN1059 RR, M-SOY 9350, ST 920 RR, TMG1175RR, M8372IPRO, M8527RR, M8644IPRO, TOPAZIORR, UFV - 16 (Capinópolis) and UFVS: Berilo RR, 2013, 2012, 2010, 2005, QUARTZO, 2001, and 2008. A completely randomized experimental design was used with five replicates. The data were subjected to analysis of variance and Tukey test to compare the means. From the Mahalanobis generalized distance, it was possible to apply the Tocher and UPGMA tests. In addition, using the Singh method and canonical correlation, the quantification of the characteristics that contributed most to genetic divergence was evaluated. Only ten genotypes reached the physiological maturity, and the following variables were evaluated: hypocotyl length, leaf width and length, plant height, flower diameter, and seed width and length. The characteristics leaf width, flower diameter, and seed width were significant (P<0.05) and obtained values above 1 for the ratio between genotypic variation and environmental variation (CVG/CVE). The higher means for the significant characteristics were observed in the genotypes SYN1059 RR, UFVS: Berilo and 2013. The genotypes SYN1059 RR, M8766RR, M8867RR, UFVS: Berilo, 2012 and 2013 were selected as the most suitable parental material to use in breeding programs.

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Differential Response of Carnation Varieties (Dianthus caryophyllus L.) to Different Levels of Boron under Polytunnels

International Journal of Environment ◽

10.3126/ije.v9i2.32603 ◽

2020 ◽

Vol 9 (2) ◽

pp. 133-145

Author(s):

Januka Dahal ◽

Debraj Adhikari ◽

Umed Kumar Pun

Keyword(s):

Block Design ◽

Dianthus Caryophyllus ◽

Growth Yield ◽

Ultra Violet ◽

Leaf Length ◽

Optimum Dose ◽

Vase Life ◽

Cut Flowers ◽

Internodal Length ◽

Flower Diameter

Carnation (Dianthus caryophyllus L.) is one of the most commercially important cut flowers of the world. It can be used for cut flowers, bedding, edging, boarders, pots and rock garden. Four Spanish carnation varieties were tested with three levels of boron under ultra-violet stabilized polytunnels from August 2017 to April 2018 at Godawari, Nepal. The objective of the research was to evaluate vegetative, floral, and vase life parameters in relations to growth, yield and quality of carnation. The research was conducted in a randomized complete block design with 3 replications. The variety Baltico had the maximum leaf length (19.3 cm), numbers of lateral branches (10.5), internodal length (5.1 cm), flower diameter (8.6 cm), and vase life (24.0 days). The numbers of nodes (5) and flower weight (25.4 g) were highest in the variety Vinco with the lowest cracked area on the stem (0.2 cm2/ crack). The numbers of stem cracks per plant significantly (p ≤0.01) reduced with an increasing level of boron though non-significant relation was observed on 60 ppm and 120 ppm. Variety Baltico was found as a better variety compared to the Vinco, Cervantes and Master varieties according to the vegetative, floral, yield and vase life parameters. Among the levels of boron tested, 60 ppm was found as the optimum dose. Thus, variety Baltico and 60 ppm boron is suggested to be used at the climatic condition of Lalitpur.

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Vernalization Duration and Light Intensity Influence Flowering of Three Hybrid Nobile Dendrobium Cultivars

HortScience ◽

10.21273/hortsci.46.3.406 ◽

2011 ◽

Vol 46 (3) ◽

pp. 406-410 ◽

Cited By ~ 3

Author(s):

Min Lin ◽

Terri W. Starman ◽

Yin-Tung Wang ◽

Genhua Niu

Keyword(s):

Light Intensity ◽

Flowering Time ◽

Photon Flux ◽

Flower Initiation ◽

Flower Longevity ◽

Photosynthetic Photon Flux ◽

Flower Diameter ◽

Flower Quality ◽

Delayed Flowering

The flowering time and flower quality of three hybrid Dendrobium nobile cultivars in relation to light intensity during cooling and duration of vernalization were studied in the first experiment. Mature Dendrobium Red Emperor ‘Prince’, Den. Sea Mary ‘Snow King’, and Den. Love Memory ‘Fizz’ plants were vernalized at 10 °C under 300 to 350 μmol·m−2·s−1 photosynthetic photon flux (PPF) (12-h photoperiod) or darkness, each with four cooling durations (2, 4, 6, or 8 weeks). Plants were forced in a greenhouse after vernalization. At least 4 weeks of 10 °C cooling in light was needed for complete flower initiation of Den. Red Emperor ‘Prince’, whereas Den. Sea Mary ‘Snow King’ and Den. Love Memory ‘Fizz’ only needed 2 weeks of 10 °C cooling regardless of light. For all three cultivars, darkness during vernalization slightly delayed flowering and resulted in fewer but larger flowers. Longer cooling duration delayed flowering, decreased flower longevity, and produced more and larger flowers. In a second experiment, Den. Love Memory ‘Fizz’ plants were vernalized at 15 °C for 4 weeks under a 12-h photoperiod and PPF of 0, 50, 100, or 200 μmol·m−2·s−1. Compared with 200 μmol·m−2·s−1, low PPF at 50 or 100 μmol·m−2·s−1 did not affect flowering time or flower qualities; however, darkness delayed flowering and reduced flower qualities except flower diameter.

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Relationship between root exudation of organic carbon and physiological variables of irrigated rice cultivars

Ciência Rural ◽

10.1590/0103-8478cr20180507 ◽

2018 ◽

Vol 48 (12) ◽

Author(s):

Janielly Silva Costa Moscôso ◽

Leandro Souza da Silva ◽

Camila Peligrinotti Tarouco ◽

Fernando Teixeira Nicoloso ◽

Fabiane Figueiredo Severo ◽

...

Keyword(s):

Organic Carbon ◽

Dry Matter ◽

Root Exudation ◽

Reproductive Period ◽

Irrigated Rice ◽

Physiological Variables ◽

Anoxic Environments ◽

Full Flowering ◽

Randomized Experimental Design ◽

Santa Maria

ABSTRACT: Rhizospheric carbon resulting from root exudation is one of the substrates used by the soil microbiota, and reflects methane (CH4) emissions in anoxic environments such as irrigated rice cultivation. With the increase of the photosynthetic capacity of the plant in the reproductive period, there is greater accumulation of biomass which, in turn, increases the rate of root exudation. However, genotypic variations in the physiological aspects of rice plants may be related to the amount of root exudates. Ten cultivars of irrigated rice were evaluated for the exudation rate of total organic carbon (EXRToc), shoot dry matter (SDM), and physiological variables related to photosynthesis during the full flowering (blooming) period. Two experiments were conducted in the greenhouse of the Department of Soils of the UFSM (University of Santa Maria, Santa Maria, RS, Brazil) in a completely randomized experimental design. The cultivars presented significant differences in EXRToc, SDM, and all physiological variables as well as positive and significant correlations between EXRToc and physiological variables. Early cultivars were more inefficient in the physiological variables reflecting reduced values of EXRToc and SDM whereas medium-cycle cultivars were more efficient with larger EXRToc and SDM reflections.

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