Phenological and Physiological Study of Six Cultivars of Ziziphus spp. Planted in Basra Province- Iraq.

2016 ◽  
Vol 6 (2) ◽  
pp. 981-995
Author(s):  
Manal Zbary Al Mayahi
Keyword(s):  
Dry Weight ◽  
Growing Season ◽  
Physiological Characteristics ◽  
Total Acidity ◽  
Total Chlorophyll ◽  
Fresh Weight ◽  
Weight Percentage ◽  
Total Chlorophyll Content ◽  
Calcium Pectate ◽  
Significant Superiority

This study was conducted in a private orchard at Abu Al Khasib area in Basra province – Iraq, during the growing season (2013), to evaluate six cultivars of Ziziphus spp. Plant, phenologically and physiologically. The results confirmed a difference among the cultivars in some phenological characteristics, and a similarity in others. While in physiological characteristics, and a similarity in others. While in physiological characteristics the study showed a significant superiority of the Toffahi cultivar in its length, diameter and weight of fruits (4.00 cm, 3.26 cm and 7.30 g.) respectively and in its fruit dry weight percentage (42.38 %), while the Hindi cultivar was superior in the T.S.S., water content and phenols percentages (17.22, 67.36 and 2.21 %) respectively. But the Laimoni cultivar was superior in leaf area, adjustable total acidity percentage and calcium pectate percentage (6.78 cm2, 0.81 % and 4.57%) respectively. While Bathri cultivar was significantly superior in total chlorophyll content (3.36 mg. 100-1 fresh weight). Whilst the rest of cultivars showed a variable differences among them.

scholarly journals Salinity induced deleterious effects on germination, growth, physiological and biochemical process of two varieties of groundnut (Arachis hypogaea L.)

2020 ◽  
Vol 5 (2) ◽  
pp. 144-150
Author(s):  
Sharmin Akter ◽  
Dilruba Yeasmin Jharna ◽  
Sujan Kanti Mali ◽  
Abu Sayeed
Keyword(s):  
Salt Stress ◽  
Chlorophyll Content ◽  
Arachis Hypogaea ◽  
Dry Weight ◽  
Chlorophyll B ◽  
Total Chlorophyll ◽  
Fresh Weight ◽  
Total Chlorophyll Content ◽  
Arachis Hypogaea L ◽  
Physiological And Biochemical

The present study was accomplished to find out the effects of salinity on germination, growth, physiological and biochemical processes of two different groundnuts (Arachis hypogaea L.), varieties viz., Dacca-1, and Zhinga groundnut. The experiments consisted of five salinity treatments viz., control (no salinity), 3, 6, 9, and 12dS/m during germination and vegetative stage of groundnut varieties. Results showed that germination percentage of both the groundnut varieties was significantly decreased with the increase of salt concentration. During the germination stage, maximum shoot and root length, shoot and root fresh weight and shoot and root dry weight of groundnut varieties were recorded from Zhinga groundnut variety at salt stress. The same result occurred during the vegetative stage of Dacca-1 variety while the Zhinga groundnut variety showed maximum parameters than Dacca-1. Fresh weight, as well as dry weight, of shoots and roots of both the groundnut varieties was also decreased with the increase of salt concentrations while leaf proline concentrations were increased among these varieties. Salinity caused significant (P<0.001) reduction in chlorophyll a, chlorophyll b, and total chlorophyll content in both the genotypes. Between two genotypes, Zhinga groundnut recorded higher chlorophyll a, chlorophyll b and total chlorophyll content than Dacca-1. From the studies, it is concluded that the groundnut genotype Zhinga was identified as the tolerant genotype to salt stress than Dacca-1. Overall results indicate that high salinity condition is not suitable for growing the groundnut.

scholarly journals Effects of nano silver on the growth of banana (Musa spp.) cultured in vitro

2018 ◽  
Vol 10 (2) ◽  
pp. 92-98 ◽  
Author(s):  
Dang Giap Do ◽  
Thi Kim Thuy Dang ◽  
Thi Huyen Trang Nguyen ◽  
Thi Duoc Nguyen ◽  
Trong Tuan Tran ◽  
...  
Keyword(s):  
Chlorophyll Content ◽  
Dry Weight ◽  
Total Chlorophyll ◽  
Fresh Weight ◽  
Nano Silver ◽  
Positive Effects ◽  
Total Chlorophyll Content ◽  
Number Of Leaves ◽  
The One

Nano silver has positive effects on the growth and development of in vitro plants. In this study, shoots of in vitro banana with 1 cm in length were cut off the tip which was cultured in Murashige and Skoog (MS) medium supplemented with 30 g.L-1 sucrose, 15% coconut water (v/v), 5 mg. L-1 6-Benzyladenine (BA), 8 g.L-1 agar and nano silver (1, 3, 5, 7 ppm). After twenty days cultured, shoots in the medium supplemented with 1 ppm nano silver have grown well with 8.4 times multiplication and total chlorophyll content (2.05 mg.g-1), three-fold higher than in the control experiment. All new shoot samples were cultivated in a new medium with same component and supplemented with 1 mg. L-1 active charcoal to study root formation. The results showed that the best medium for root development was the one with 3 ppm nano silver. In this treatment, the height of shoots, number of leaves, number of roots, root length, fresh weight, dry weight and total chlorophyll content were 2.90 cm, 4.40 leaves per explant, 7.10 roots per explant, 7.7 cm per explant, 1.47 g per explant, 0.136 g and 3.17 mg.g-1, respectively. In vitro healthy seedlings with equal size were grown in nurseries. Different concentrations of nano silver (5, 10, 15 ppm) were sprayed on once a week. After 30 days, the highest quality result was observed at concentration 5 ppm with shoot of 4.86 cm in length, 5.20 leaves per shoot, 4.60 roots per explant, root of 4.87 cm in length and 3.07 g per explant in fresh weight. Nano bạc có tác động tích cực lên quá trình sinh trưởng và phát triển của một số loài thực vật nuôi cấy in vitro. Trong nghiên cứu này, chồi non in vitro có chiều cao 1 cm đã cắt bỏ đỉnh được nuôi cấy trên môi trường MS có bổ sung 30 g/L đường, 15% nước dừa (v/v), 5 mg/L BA, 8 g/L agar và nano bạc ở nồng độ 1, 3, 5, 7 ppm. Sau 20 ngày nuôi cấy, mẫu cấy phát triển tốt trên môi trường bổ sung nano bạc nồng độ 1 ppm với hệ số nhân chồi 8,4 lần, hàm lượng chlorophyll tổng số đạt 2,05 mg/g, cao gấp ba lần so với mẫu đối chứng. Mẫu cấy được chuyền sang môi trường mới có thành phần tương tự và bổ sung thêm 1 mg/L than hoạt tính để khảo sát sự tạo rễ. Kết quả cho thấy mẫu cấy trên môi trường có nồng độ nano bạc 3 ppm phát triển tốt nhất với chiều cao cây 2,90 cm/mẫu; số lá 4,40/ mẫu; số rễ 7,10/ mẫu; chiều dài rễ 7,7 cm/mẫu; khối lượng tươi 1,47 g/mẫu, khối lượng khô 0,136 g/mẫu và hàm lượng chlorophyll tổng đạt 3,17 mg/g. Những cây con in vitro phát triển tốt được trồng ngoài vườn ươm. Các dung dịch nano bạc có nồng độ 5, 10, 15 ppm được dùng để phun lên cây 1 lần/ tuần. Sau 30 ngày, kết quả cao nhất ghi nhận ở dung dịch có nồng độ 5 ppm với chiều cao chồi đạt 4,86 cm, 5,20 lá/chồi, 4,60 rễ/mẫu, chiều dài rễ đạt 4,87 cm và khối lượng tươi đạt 3,07 g/mẫu.

scholarly journals Improving the Keeping Quality and Vase Life of Cut Alstroemeria Flowers by Pre and Post-harvest Salicylic Acid Treatments

2013 ◽  
Vol 5 (3) ◽  
pp. 364-370 ◽  
Author(s):  
Elnaz SOLEIMANY-FARD ◽  
Khodayar HEMMATI ◽  
Ahmad KHALIGHI
Keyword(s):  
Salicylic Acid ◽  
Water Balance ◽  
Chlorophyll Content ◽  
Water Loss ◽  
Vase Life ◽  
Total Chlorophyll ◽  
Cut Flowers ◽  
Fresh Weight ◽  
Total Chlorophyll Content ◽  
Keeping Quality

Keeping quality and length of vase life are important factors for evaluation of cut flowers quality, for both domestic and export markets. Studding the effect of pre- and post-harvest salicylic acid applications on keeping quality and vase life of cut alstroemeria flowers during vase period is the approach taken. Aqueous solutions of salicylic acid at 0.0 (with distilled water), 1, 2 and 3 mM were sprayed to run-off (approximately 500 mL per plant), about two weeks before flowers harvest. The cut flowers were harvested in the early morning and both of cut flowers treated (sprayed) and untreated were kept in vase solutions containing salicylic acid at 0.0 (with distilled water), 1, 2 and 3 mM. Sucrose at 4% was added to all treatments as a base solution. The changes in relative fresh weight, water uptake, water loss, water balance, total chlorophyll content and vase life were estimated during vase period. The results showed that the relative fresh weight, water uptake, water balance, total chlorophyll content and vase life decreased significantly while the water loss increased significantly during experiment for all treatments. A significant difference between salicylic acid and control treatments in all measured parameters is observed. During vase period, the salicylic acid treatments maintained significantly a more favourable relative fresh weight, water uptake, water balance, total chlorophyll content and supressed significantly water loss, as compared to control treatment. Also, the results showed that the using salicylic acid increased significantly the vase life cut alstroemeria flowers, over control. The highest values of measured parameters were found when plants were treated by pre + post-harvest application of salicylic acid at 3 mM. The result revealed that the quality attributes and vase life of cut alstroemeria flowers were improved by the use of salicylic acid treatment.

scholarly journals Foliar Growth Regulator Sprays Induced Tolerance to Combined Heat Stress by Enhancing Physiological and Biochemical Responses in Rice

2021 ◽  
Vol 12 ◽  
Author(s):  
Alvaro Daniel Pantoja-Benavides ◽  
Gabriel Garces-Varon ◽  
Hermann Restrepo-Díaz
Keyword(s):  
Heat Stress ◽  
Canopy Temperature ◽  
Plant Canopy ◽  
Total Chlorophyll ◽  
Fresh Weight ◽  
Stress Control ◽  
Rice Plants ◽  
Total Chlorophyll Content ◽  
Rice Genotypes ◽  
Nighttime Temperatures

Rice yield has decreased due to climate variability and change in Colombia. Plant growth regulators have been used as a strategy to mitigate heat stress in different crops. Therefore, this study aimed to evaluate the effect of foliar applications of four growth regulators [auxins (AUX), brassinosteroids (BR), cytokinins (CK), or gibberellins (GA)] on physiological (stomatal conductance, total chlorophyll content, Fv/Fm ratio, plant canopy temperature, and relative water content) and biochemical (Malondialdehyde (MDA) and proline contents) variables in two commercial rice genotypes exposed to combined heat stress (high day and nighttime temperatures). Two separate experiments were carried out using plants of two rice genotypes, Fedearroz 67 (“F67”) and Fedearroz 2000 (“F2000”) for the first and second experiments, respectively. Both trials were analyzed together as a series of experiments. The established treatments were as follows: absolute control (AC) (rice plants grown under optimal temperatures (30/25°C day/nighttime temperatures), heat stress control (SC) [rice plants only exposed to combined heat stress (40/30°C)], and stressed rice plants and sprayed twice (5 days before and after heat stress) with a plant growth regulator (stress+AUX, stress+BR, stress+CK, or stress+GA). The results showed that foliar CK sprays enhanced the total chlorophyll content in both cultivars (3.25 and 3.65 mg g−1 fresh weight for “F67” and “F2000” rice plants, respectively) compared to SC plants (2.36 and 2.56 mg g−1 fresh weight for “F67,” and “F2000” rice plants, respectively). Foliar CK application also improved stomatal conductance mainly in “F2000” rice plants compared to their heat stress control (499.25 vs.150.60 mmol m−2s−1). Foliar BR or CK sprays reduced plant canopy temperature between 2 and 3°C and MDA content in plants under heat stress. The relative tolerance index suggested that foliar CK (97.69%), and BR (60.73%) applications helped to mitigate combined heat stress mainly in “F2000” rice plants. In conclusion, foliar BR or CK applications can be considered an agronomic strategy to help to ameliorate the negative effect of combined heat stress conditions on the physiological behavior of rice plants.

scholarly journals Lavandula angustifolia Growth and Physiology Is Affected by Substrate Type and Depth When Grown under Mediterranean Semi-intensive Green Roof Conditions

HortScience ◽  
2012 ◽  
Vol 47 (2) ◽  
pp. 311-317 ◽  
Author(s):  
George Kotsiris ◽  
Panayiotis A. Nektarios ◽  
Angeliki T. Paraskevopoulou
Keyword(s):  
Chlorophyll Content ◽  
Growth Index ◽  
Dry Weight ◽  
Green Roofs ◽  
Stomatal Resistance ◽  
The Other ◽  
Physiological Status ◽  
Total Chlorophyll ◽  
Total Chlorophyll Content ◽  
Substrate Depth

Green roofs have received increased interest as a result of their environmental, social, and economic benefits. The present study aims to evaluate suitable, lightweight substrates for the installation of semi-intensive-type green roofs and their effects on Lavandula angustifolia growth and physiological status under Mediterranean climatic conditions. The study was conducted in field containers (1.2 × 1.2 m), and treatments included the use of two depths (20 cm or 30 cm) and three different substrates: 1) pumice (Pum) mixed with peat (P) and zeolite (Z) in a volumetric proportion of 65:30:5 (Pum65:P30:Z5); 2) pumice mixed with compost (C) and zeolite in a volumetric proportion of 65:30:5 (Pum65:C30:Z5); and 3) sandy loam soil (S) mixed with perlite (Per) and zeolite in a volumetric proportion of 30:65:5 (S30:Per65:Z5). Each experimental plot was planted with four plants of L. angustifolia. The physical and chemical characteristics of the substrates and the in situ substrate moisture levels were determined. Plant growth was determined by the growth index and root dry weight, whereas the plant physiological status during the stressful summer period was determined by chlorophylla+b content and stomatal resistance. It was found that the bulk density of all of the substrates was less than 0.8 g·cm−3, whereas the water retention of substrate S30:Per65:Z5 was greater than the other two substrates at all tensions. Substrate depth was the most influential factor; therefore, the deeper substrates (30 cm) provided higher growth indices and root dry weight, increased total chlorophyll content, and reduced leaf stomatal resistance compared with the shallower substrate depth of 20 cm. Differences between substrate types were smaller compared with those of substrate depth. In spring, the growth index in substrate Pum65:C30:Z5 was larger but not in the summer when the growth index of substrates S30:Per65:Z5 and Pum65:P30:Z5 exceeded that of the substrate amended with compost until the end of the study. In late summer, the plant total chlorophyll content decreased in all substrates, whereas substrate Pum65:C30:Z5 exhibited increased stomatal resistance compared with the other two substrates at the same period. It was concluded that L. angustifolia could be grown successfully in semi-intensive Mediterranean green roofs at a substrate depth of 20 cm, but its growth and tolerance to the harsh summer conditions would improve at a substrate depth of 30 cm.

scholarly journals EFFECT OF MAGNETIC FIELD ON THE GROWTH, MULTIPLICATION AND CONCENTRATION OF THE VOLATILE OIL OF ROSEMARY OFFICINALIS IN VITRO

2019 ◽  
Vol 50 (4) ◽  
Author(s):  
Abdul Husain & Jawad
Keyword(s):  
Magnetic Field ◽  
Chlorophyll Content ◽  
Dry Weight ◽  
Volatile Oil ◽  
North Pole ◽  
Total Chlorophyll ◽  
South Pole ◽  
Total Chlorophyll Content ◽  
Engineering Sciences ◽  
Shoot Number

This experiment was conducted at the plant tissue culture laboratory – Dept. of Horti.- Coll. of Agricultural Engineering Sciences – Univ. of Baghdad, in order to study the effect of magnetic field in the propagation and production of volatile oil compounds of rosemary plant Rosmarinus officinlis. Factorial experiments within completely randomized design with thirty replications were used. The results indicated  an increase in the treatment of exposure to south pole for 30 days with the highest mean of the shoots number, fresh and dry weight and total chlorophyll content (7.5 shoots.plant-1, 6634 mg, 769.5 mg and 160.6 mg.100 g-1) respectively. While the control treatment produced the lowest value of shoot number, fresh and dry weight and total chlorophyll content (5.7 shoots.plant-1, As shoots length, the exposure to south pole for 30 days, gave the shoot length (6 cm), while the exposure treatment to north pole for 20 days gave mean branch length of 2.25 cm. In terms of the effect of magnetic field on the concentration of volatile oil compounds, the results indicate that the exposure to south pole for 30 days significantly higher than the other treatments in the following compounds: linalool, Terpinene, linderol, Limonene cymene, and camphor penene. The 30-day north pole exposure was significantly higher in the two compounds: merycenen and sabinene.

scholarly journals Effect of IBA, NAA and their Combination on Rooting and Biochemical Parameters of Stem Cuttings in Barbados Cherry

2021 ◽  
Vol 8 (5) ◽  
pp. 147-150
Author(s):  
Alam Khan Samim ◽  
B. S. Shivakumar ◽  
Ganapathi M.
Keyword(s):  
Chlorophyll Content ◽  
Chlorophyll A ◽  
Growth Regulators ◽  
Biochemical Parameters ◽  
Root Initiation ◽  
Stem Cuttings ◽  
Chlorophyll B ◽  
Total Chlorophyll ◽  
Fresh Weight ◽  
Total Chlorophyll Content

An investigation was to assess the influence of growth regulators IBA, NAA and their combination on rooting and biochemical parameters of stem cuttings in Barbados cherry. It was observed that, the least number of days (21.33) taken for root initiation, maximum percentage of rooting (80.00) was observed in cutting treated with IBA 5000 ppm followed by IBA 4500 ppm over other treatments. Significantly highest Chlorophyll-a (1.26), Chlorophyll –b (0.55) and total chlorophyll content (1.82 mg/g of fresh weight) of leaves and C : N ratio (8.74) was observed in cuttings treated with IBA 5000 ppm followed by IBA 4500 ppm over all other treatments.

scholarly journals Responses of different okra (Abelmoschus esculentus) cultivars to water deficit conditions

2021 ◽  
Vol 16 (1) ◽  
pp. 53-63
Author(s):  
Q Ayub ◽  
S M Khan ◽  
I Hussain ◽  
K Naveed ◽  
S Ali ◽  
...  
Keyword(s):  
Plant Height ◽  
Chlorophyll A ◽  
Total Protein ◽  
Field Capacity ◽  
Dry Weight ◽  
Chlorophyll B ◽  
Total Chlorophyll ◽  
Fresh Weight ◽  
Total Carotenoids ◽  
Drought Conditions

A pot experiment was conducted to evaluate the adverse effects of drought on different okra cultivars and to identify the most suitable okra cultivar for growing in drought conditions. Five okra cultivars namely Pusa Green, Clemson, Sabz Pari, Pusa Swani and Mehak Pari were subjected to three drought levels i.e., control (100% Field capacity),50% and 25% Field Capacity (FC). Physiological parameters like fresh and dry weight of plant and plant height were recorded along with biochemical attributes such as chlorophyll content (a, b, total) carotenoids, total protein, proline content, and Membrane stability index (MSI%). Results showed that drought significantly reduced all the studied parameters and at maximum drought (25% FC) lowest values of fresh weight (12.42g), dry weight (1.22g), plant height (7.86cm), chlorophyll a (9.02mg/g FW), chlorophyll b (18.69mg/g FW), total chlorophyll (27.71mg/g FW), carotenoids (11.80mg/g FW), total protein (2.73mg/g FW),whereas maximum Proline (21.36μg/g FW), and MSI (72%) were observed under the same drought. The results concerning responses of okra cultivars under drought conditions showed that maximum. Fresh weight (15.25g) and Dry weight (2.74g) was observed in Pusa green while maximum Plant height (13.77cm), Chlorophyll a (14.38mg/g FW), Chlorophyll b (24.41mg/g FW), Total Chlorophyll (38.80mg/g FW), Carotenoids (18.57mg/g FW), Total Protein (5.44mg/g FW), Proline (27.78μg/g FW), and MSI (56.33%) were produced by Sabz Pari. Hence it can be concluded that drought causes significant variation on physical and biochemical attributes of okra whereas Sabz Pari showed resistance towards the applied stress and produced better results.

scholarly journals EFFECT OF SOME PlANT GROWTH REGULATORS ON TOTAL ALKALOIDS PRODUCTION OF ASHWAGANDHA (Withania somnifera L.) In Vitro

2017 ◽  
Vol 48 (3) ◽  
Author(s):  
Hamood & Majeed
Keyword(s):  
Salicylic Acid ◽  
Plant Growth ◽  
Withania Somnifera ◽  
Dry Weight ◽  
Fresh Weight ◽  
Benzyl Adenine ◽  
Total Alkaloids ◽  
Significant Superiority ◽  
Vegetative System

An experiment  was conducted in the tissue culture laboratory, College of Educated For Pure Science, Diyala Uinversity in 2014-2015,to investigate the influences of some plant growth regulators on total alkaloids production for ashwagandha plant )Withania somnifera L.) In Vitro .Four concentrations of Benzyl Adenine)BA (0.0, 1, 2 and 3 mg.l-1, which were represented with A0  ،A1 ، A2  and A3 respectively، and also four concentrations of Salicylic acid 0, 10, 20, and 30 mg.l-1 which were represented with B0, B1,B2 and B3 respectively, with the interaction among of Benzyl Adenine and Salicylic acid,these are concentrations added to growing media(MS) in multiplication stages. Seeds were soaked with gibberellic acid 500 mg.l-1  for 18 h at room temperature in the all treatments. Benzyl Adenine at 1 mg.l-1 significantly increased branches number 4.22 branch, and Chlrophyll content 34.07 (SPAD Unit),there is no significant differences at 2 mg.l- in leaves number12.05 ,11.32 leaf, fresh and dry matter of vegetative system 1.42, 1.40g, and 0.134, 0.128 g, also SA at 10 mg.l-1 led to increased in number of branches 3.45 branch, number of  leaves 14.05 leaf, dry weight of vegetative system 0.140 g ,  fresh and dry weight of root system 0.76 ,0.06 g respectively, there is no significant differences at 20 mg.l- in Chlrophyll content 33.77, 35.47(SPAD Unit), fresh weight of vegetative system,1.47,  1.40g, number of roots 18.00,20.10,  and  percentage of rooting 7.89% ,8.51%. Interaction among of Benzyl Adenine and Salicylic acid (A1B1) shows a significant superiority in all studed  vegetative  characters, there is no significant differences with (A2B1) in leaves number15.30, 14.80 leaf, fresh  weight of vegetative system1.61,1.59 g, dry weight of vegetative system 0.160 ,0.160 g, A0B1 treatment which rooted gave 0.105 mg.g-1 total alkaloids. Benzyl Adenine at  2 mg.l-1  increased total  alkaloids   0.091 (mg.g-1), Salicylic acid at 10 (mg.l-1) increased total  alkaloids0.091 (mg.g-1 ),also Interaction  of treatments A2B1  and  A1B1  show a  significant superiority of  total  alkaloids 0.101, 0.100 (mg.g-1)  as  compared with A0B0 which gave lowest content 0.029  (mg.g-1).

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