scholarly journals Growth Parameters and Photosynthetic Pigments of Marigold under Stress Induced by Jasmonic Acid

2013 ◽  
Vol 5 (4) ◽  
pp. 513-517 ◽  
Author(s):  
Nilofar ATAEI ◽  
Hossein MORADI ◽  
Vahid AKBARPOUR
Keyword(s):  
Jasmonic Acid ◽  
Plant Height ◽  
Photosynthetic Pigments ◽  
Seed Weight ◽  
Growth Parameters ◽  
Calendula Officinalis ◽  
Flower Diameter ◽  
Calendula Officinalis L

In this research, the effects of different concentrations of jasmonic acid ( JA) on growth parameters of flower diameter, number of flowers, dry flower weight, plant height, 1000-seed weight and also, photosynthetic pigments in marigold (Calendula officinalis L.) were investigated. To achieve this aim, marigold planted in pots and jasmonic acid were sprayed on the shoots at concentrations of 0.75, 150 and 225 μM. Data were compared by Duncan test. The results showed that different concentrations of jasmonic acid significantly affected the dry flower weight, plant height and 1000-seed weight. The maximum plant height and 1000-seed weight were reached by 150 μM jasmonic acid, while 225 μM was recorded the dry flower weight.

ETHIDIUM BROMIDE INFLUENCE ON PHOTOSYNTHETIC PIGMENTS CONTENT IN Calendula officinalis L. LEAF

2012 ◽  
Vol 11 (9) ◽  
pp. 1721-1724
Author(s):  
Roxana Vatavu ◽  
Constantin Leonte ◽  
Teodor Robu. ◽  
Catalina Slabu-Pascal
Keyword(s):  
Ethidium Bromide ◽  
Photosynthetic Pigments ◽  
Calendula Officinalis ◽  
Calendula Officinalis L

scholarly journals Response of Calendula officinalis L. Plants to Different Nitrogenous Fertilizers

HortScience ◽  
1995 ◽  
Vol 30 (4) ◽  
pp. 858F-858
Author(s):  
Ahmed A. Al-Badawy ◽  
Nadia M. Abdalla ◽  
Ahmed A. El-Sayed
Keyword(s):  
Ammonium Nitrate ◽  
Photosynthetic Pigments ◽  
Vegetative Growth ◽  
Dry Weight ◽  
Potassium Sulfate ◽  
Chlorophyll B ◽  
Calendula Officinalis ◽  
Flower Number ◽  
Calendula Officinalis L ◽  
Calcium Superphosphate

Calendula officinalis L. plants were fertilized with urea (46% N), ammonium nitrate (31% N), and ammonium sulfate (20% N) at 0, 25, 50, or 100 kg N/Feddan (4200 m2). The plants also received calcium superphosphate (15.5% P2O5) and potassium sulfate (48% K2O) at 100 and 50 kg/Feddan, respectively. The results showed that fertilizers enhanced vegetative growth and improved flowering aspects compared to control plants. Application of urea at 50 kg N/Feddan gave the highest flower number (119) and flower dry weight (183 g). Moreover, the applied fertilizers increased the content of photosynthetic pigments (chlorophyll a, chlorophyll b, and carotenoids) in leaves and flowers and the N percentage in shoots. Nevertheless, P and K percentages were decreased.

scholarly journals Performance of gerbera varieties under naturally ventilated polyhouse

2021 ◽  
Vol 23 (3) ◽  
pp. 351-355
Author(s):  
M. VIJAYALAXMI ◽  
Keyword(s):  
Leaf Area ◽  
Chlorophyll Content ◽  
Plant Height ◽  
Growth Parameters ◽  
Flower Stalk ◽  
Disc Diameter ◽  
Stalk Diameter ◽  
Flower Diameter ◽  
Number Of Leaves ◽  
Ray Florets

An experiment was conducted to evaluate ten varieties of gerbera under polyhouse conditions in Hyderabad. Vegetative, flowering and flower characters varied significantly among the cultivars and variations in different growth parameters were prominent. Mean performance of the cultivars revealed that cv. Helix recorded maximum plant height, flower diameter, flower stalk diameter and ray florets. The same cultivar Helix also produced maximum number of suckers per plant, number of flowers per plant, Fresh weight of flower, dry weight of flower and possessed longest field life which was at par with cv. Goliath. The cv. Goliath found superior with respect to maximum chlorophyll content, minimum days required for commence of first-flower and days taken for 50% flowering.Maximum disc diameter and number of leaves were produced by cv. balance. While cv. Savannah had significantly maximum leaf area and length of the flower stalk. However, the cv. ‘Montenegro recorded least mean value in terms of plant height, number of leaves per plant, leaf length, leaf breadth, leaf area, number of suckers, chlorophyll content, flower diameter, flower stalk diameter, ray florets, disc diameter, number of flowers per plant and took maximum days for first flower opening, 50 % flowering and which was late in inducing flowering had lesser duration of flowering. Cultivar Helix exerted best performance on various growth and flower characters along with the cultivars Goliath, Danaellen, Balance and Savannah.

scholarly journals SPACE-TIME DEPENDENCE OF JATROPHA GROWTH PARAMETERS GROWN IN BRAZILIAN SEMIARID

2016 ◽  
Vol 29 (2) ◽  
pp. 358-366
Author(s):  
ANDRÉ QUINTÃO DE ALMEIDA ◽  
RODOLFO MARCONDES SILVA SOUZA ◽  
SÉRVULO MERCIER SIQUEIRA E SILVA ◽  
IVAN SOUTO DE OLIVEIRA JUNIOR ◽  
FARNÉSIO DE SOUSA CAVALCANTE ◽  
...  
Keyword(s):  
Plant Height ◽  
Seed Weight ◽  
Growth Parameters ◽  
Spherical Model ◽  
Stem Diameter ◽  
Semiarid Region ◽  
Brazilian Semiarid ◽  
Plant Characteristics ◽  
Precision Balance ◽  
Digital Caliper

ABSTRACT: Jatropha has emerged as a source of power generation in the semiarid region of Brazil. The objective of this study was to evaluate, using geostatistics, the spatial variability of stem diameter, plant height and seed weight of jatropha (Jatropha curcas L.) grown under rain fed conditions in Serra Talhada, Pernambuco state, Brazil. At 545, 905 and 1265 days after sowing (DAS), the stem diameter and plant height of 340 plants were measured with a digital caliper and a tape measure. At 545 DAS, the fruits of 306 plants were collected, the seeds extracted and their weights measured with a precision balance. For each date analyzed, the spatial dependence of the plant characteristics was evaluated from the adjustment of the experimental semivariogram. The spherical model was adjusted for modeling the spatial distribution of cultural parameters. The range of plant height reduced by an average of 37% from 545 DAS when compared to 905 and 1265 DAS, while for the stem diameter this parameter remained practically constant. Geostatistics can be employed to assist in future sampling and to identify areas with different patterns that can occur in the jatropha planting.

scholarly journals Effect of Limited Drip Irrigation Regime on Yield and Yield Components of Sesame under Mediterranean Conditions

2017 ◽  
Vol 74 (1) ◽  
pp. 71
Author(s):  
Panayiota PAPASTYLIANOU ◽  
Dimitrios BILALIS ◽  
Ilias TRAVLOS
Keyword(s):  
Plant Height ◽  
Seed Yield ◽  
Seed Weight ◽  
Growth Parameters ◽  
Crop Evapotranspiration ◽  
Higher Plant ◽  
Plant Seed ◽  
Irrigation Level ◽  
Irrigation Regimes ◽  
Number Of Seeds

Sesame is one of the most important oilseed crops in the world. Irrigation is of great importance to sesame production due to its positive effect on growth parameters. Although sesame has good drought tolerance compared with many other crops, it is particularly susceptible to drought damage during the seedling, flowering and seed filling stages and this can lead to yield loss. The aim of this study was to determine the response of sesame landraces to different irrigation applications during the 2015 growing season. The experiment was set up as a split plot design with three replicates, four main plots (irrigation treatments, designated as 100%, 75% 50% and 0 of the daily crop evapotranspiration) and two sub-plots (sesame landraces, Limnos and Evros). Different characteristics such as plant height, number of seeds per capsule, and number of capsules per plant, seed yield, 1000-seed weight and % capsules without seeds, were recorded. The results indicated that all traits except 1000-seed weight were significantly affected by irrigation regimes. Plant height, shattering losses and number of capsules per plant decreased with increasing water shortage. Seed yield and number of seeds per capsule were less affected by irrigation level and showed higher values in the 50% of the daily crop evapotranspiration treatment. Limnos produced higher seed yield and number of seeds per capsule under all irrigation regimes. Evros showed higher plant height and shattering losses than Limnos. The results of this study suggest that sesame landraces can use water efficiently, are locally adapted and associated with traditional farming systems. 

scholarly journals KERAGAMAN M1 TANAMAN HIAS BUNGA MATAHARI (Helianthus annuus L.) AKIBAT IRADIASI SINAR GAMMA

2018 ◽  
Vol 2 (1) ◽  
pp. 1
Author(s):  
Intan Novela Setya Monikasari ◽  
Syaiful Anwar ◽  
Budi Adi Kristanto
Keyword(s):  
Plant Height ◽  
Seed Weight ◽  
Gamma Ray ◽  
Morphological Variability ◽  
Flower Color ◽  
Stem Diameter ◽  
Initiation Time ◽  
Flower Diameter ◽  
Total Seed ◽  
Lethal Doses

ABSTRACT The purpose of the research was to obtain the morphological variability of M1 sunflower ornamental plant and information of lethal doses (LD50) effect of mutation by gamma ray irradiation. The research was arranged in monofactor experimental with Completely Randomized Design (RAL) with 5 treatments and 5 replication, each replication consisted of 5 sunflower seeds was irradiated by gamma ray of 0, 5, 25, 45, and 65 Gy. The data observed were analyzed by anova and followed with BNT of 5% level. Parameters observed included germination, plant height, stem diameter, tube flower diameter, tape flower diameter, initiation time, perfect bloom age, chlorophyll, ribbon flower number, seed number, total seed weight, weight of 100 seeds, LD50, Flower color and heritability. The result showed that irradiation significant effected to plant height, stem diameter, tube flower diameter, ribbon flower diameter, initiation time, seeds number, seed weight, weight of 100 seeds. Lethal doses of sunflower is 74,19 Gy. Heritability value range from 23,47 to 73,81%.Keywords : Helianthus annus L., irradiation, LD50, heritability

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