Plant Productions

Evaluation of Different Irrigation Levels and Media on Growth Properties of Cut Rose (Rosa hybrida cv. Samurai) under Soilless Culture Conditions

Mahin Alboghobeish; Ali Tehrani far; Majid Zargarian; Ali Dolatkhahi

Volume 44, Issue 4 , December 2021, , Pages 601-612

https://doi.org/10.22055/ppd.2021.32029.1858

Abstract

AbstractIntroductionRose is one of the most important ornamental plants that is widely cultivated in many countries. The optimal growth and development of commercial cut rose varieties ... Read More AbstractIntroductionRose is one of the most important ornamental plants that is widely cultivated in many countries. The optimal growth and development of commercial cut rose varieties is essential to supply water needed for plants. If the water level is reduced at different stages of production, it can have damaging effects on the vegetative properties of the cut rose. Therefore, accurate estimation of water requirement and adaptation of irrigation program based on water requirement of the plant and its growth conditions can improve water use efficiency, avoid stress and control production. Materials and MethodsIn order to evaluate different levels of irrigation requirement in combination with crop media on vegetative characteristics of rose CV. Samurai, a greenhouse experiment was conducted as split plot based on randomized complete block design with four replications in greenhouse conditions of Ferdowsi University of Mashhad. The needed irrigation of the plant 120%, 100%, 80%, 60% and sub plot consisted of three different substrate levels (Perlite, perlite_cocopeat 1:3, perlite _Vermiculite 1:3). The traits included a stem length, branch diameter, flower bud length and diameter, fresh and dry weight of flower bud, number of flowering branches, chlorophyll a, b, relative leaf water content (RWC). Results and DiscussionResults revealed that among the experimental treatments, water stress treatment had significant effect on all measured traits except flower bud length. However, culture medium treatment and interaction of media water stress did not affect all measured physiological and biochemical parameters except for branch length and flower bud diameter. The results of this experiment showed that the 120% and 100% water regimes significantly increased the measured physiological and biochemical traits (shoot length, fresh and dry weight of flower shoot, shoot diameter, number of shoots, RWC, chlorophyll a)included in this study. However, the 60% aqueous regime had adverse effects on the parameters considered while the highest amount of chlorophyll b was obtained in the 60% aqueous regime. In the present study, the results indicate that water stress has adverse effects on all vegetative characteristics of cut roses, therefore, it is suggested that the aquatic requirement of the plant be accurately estimated in order to achieve high quality roses. Also, the flower bud length traits are not significant at water stress levels, because plant roots are in close contact with water under cultivated conditions and respond to water stress by improving the electrical conductivity in the plant. Therefore, it is recommended that due to the negative effects of water stress on the quantitative and qualitative traits of rose, special attention should be paid to the problem of accurate estimation of water requirement and optimal water supply. Therefore, it is important to improve the vegetative and physiological traits of roses in non-soil conditions using appropriate cultivation for future studies in order to achieve desirable results. ConclusionOptimal water supply results in improved vegetative and physiological traits in the plant. Therefore in no-tillage conditions of rose samurai, 100% (control) and 120% irrigation requirement are recommended as the most appropriate levels of irrigation regime in Mashhad region.

Effect of sowing and irrigation cutoff date on seed yield and irrigation water use efficiency of spring berseem clover in Khouzestan

Ahmad Ali Shoushi Dezfuli; Mohammad khorramian; Ali Assareh

Volume 41, Issue 4 , March 2019, , Pages 69-82

https://doi.org/10.22055/ppd.2018.23152.1510

Abstract

Abstract Background and Objectives Khouzestan province with about 1000 hectares of seed clover is the most important region for seed production of berseem clover (Trifolium alexandrinum) ... Read More Abstract Background and Objectives Khouzestan province with about 1000 hectares of seed clover is the most important region for seed production of berseem clover (Trifolium alexandrinum) in Iran. Extending the cultivation area of berseem clover (BC) is important due to the favorable effects of BC on soil fertility and the necessity of this region to a desirable crop rotation. The harvest date of summer crops such as corn leads to delay in optimum sowing date of BC. Several investigators in other areas have demonstrated that early sowing dates improved yield of BC. On the other hand, the most important factor in crop yields is water irrigation; it plays an important role in sustainable agriculture. Based on the existing literature, early sowing date reduces the number of irrigation events and increases water irrigation use efficiency (IWUE). Therefore, this experiment was conducted to evaluate the response of spring BC sowing date and last irrigation cutoff time on seed yield and IWUE. Materials and Methods This study was carried out in Safiabad Agricultural Research Center in two years (2014-15). Soil texture of the experimental field was silty clay loam, well drained without salinity (ECe=1.2ds m-1), with 0.75 percent organic carbon. The statistical design of the experiment was split plot based on a randomized complete block design with four replications. The main plots were allocated to sowing date including 10th Feb, 20th Feb, 2st Mar and 12th Mar, and the sub plots were assigned to irrigation cutoff dates including 5th Jun, 15th Jun and 25th Jun. Daily evaporation from class A evaporation pan of the Safiabad weather station (nearby the experimental field) was measured to calculate water irrigation depth, and BC evapotranspiration was calculated by applying a pan coefficient of 0.8. Irrigation interval was managed based on 80 mm accumulated evaporation from the pan evaporation. The measured traits included seed yield, IWUE, number of seeds per inflorescence (NSI), number of inflorescences per square meter (NI), days to flowering, straw production, total dry matter (TDM), harvest index (HI) and weighed a thousand seeds. Results There was a significant difference between the irrigation cutoff date for all traits except the number of days to flowering and HI. The results of the mean comparison showed that the, sowing date of 20th Feb and irrigation cutoff in 15th Jun, with seed yield (631 kg.ha-1) and IWUE (0.72 kg.m-3) was better than the other treatments. In this treatment, the plant growth period in the first sowing date (88.6 days), and the NI (623 numbers), and the NSI (37.1 numbers) was higher than the other treatments. The correlation between seed yield and other traits was positive and the stepwise regression analysis showed a positive and high effect of NI on seed yield in BC. Discussion The results of this trial confirm previous findings that BC early sowing dates, will had higher seed yield. Also, the results showed that delaying in irrigation cutoff is effective in decreasing IWUE, so that irrigation until 25 th June in comparison with 15 th June, In spite of significant increasing in yield, decreased IWUE significantly.

Comparing herbal yield, essential oil content and composition of anis hyssop (Agastache foeniculum Kuntze) in field and greenhouse conditions under drought stress

M M; R O

Volume 36, Issue 4 , March 2014, , Pages 43-53

Abstract

Anise hyssop (Agastache foeniculum Kuntze) is a prennial herb plant belonging to the Lamiaceae family. The Essential oil form this plant is used in food, pharmaceutical, cosmetics ... Read More

Evaluation of water deficit stress tolerance induced by seed priming in wheat (Triticum aestivum L.) cultivars

A. Eivazi; A. Najafi Par; S.H. Mousavi Anzabi; H. Ranji

Volume 36, Issue 3 , December 2013, , Pages 1-12

Abstract

To evaluate the effects of seed priming on inducing of water stress tolerance, an experiment was carried out under laboratory and field conditions in Satloo station of Agricultural ... Read More To evaluate the effects of seed priming on inducing of water stress tolerance, an experiment was carried out under laboratory and field conditions in Satloo station of Agricultural and Natural Resources Research Center in West Azerbaijan province at 2008-9 seasons. A factorial experiment was formed, with the first factor including four cultivars Zarrin and Shahriar (irrigated cultivars), Sardary and Azar (rainfed cultivars) and the second factor, hydro-priming, osmotic solutions (10% polyethylene glycol (8000), 2.5% KCL, 5% NaCl, 10% Urea, 4/0% Micro nutrient), plant growth regulators (1000 ppm Cycocel and 20 ppm Auxin) and non priming as a control. Treatments were arranged at laboratory in Completely Randomized Design and two separate experiments with Randomized Blocks Design under normal and water stress at field conditions with five replications. Irrigation was held at booting stage in water stress experiment. Results of analysis of variance showed that there were statistically significant differences for traits of plumule and radical lenghts and their dry weights, grain yield and its components, total dry matter and relative water content of lage feaf (P≤0.05). Pretreatment of Cycocel was allocated maximum plumule (17.8cm) and radical (17.2cm) lenghts and their dry weights (8.0 and 11.5mg, respectively). All priming treatments at four cultivars had more grain yield than control and at plant growth regulators were dominant and the highest variation percentage. Total dry matter (-10.7%), grain yield (-4.0%) and relative water content (-9.3%) at seed priming with potassium cholride had the lowest variation percentage under water stress than normal conditions. This pretreatment increased spike per squar meter in Shariar, Zarrin and Azar. Within cultivars, Azar with 0.89 susceptibility index was the most tolerance to drought stress. Traits of total dry matter, grain per spike and spike per squar meter observed positive significant correlations with grain yield at seed priming treatments, 0.91**, 0.92** and 0.79*, respectively. It seems that these traits could be used as an indirect criterion for selection of cultivars with high grain yield.

Effects of biological and chemical phosphorus fertilizers on growth analysis of maize S.C. 704 with different irrigation regimes

A.A. Koliaei; G. Akbari; A. Rahnama; O. Armandpisheh; M.R. Labbafi Hossianabadi

Volume 36, Issue 1 , June 2013, , Pages 79-88

Abstract

In order to study the influence of various irrigation regimes (drought stress), biological fertilizers (a combination of two Phosphate-solubilizing microorganisms) and different ... Read More

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Keywords = Water stress

Evaluation of Different Irrigation Levels and Media on Growth Properties of Cut Rose (Rosa hybrida cv. Samurai) under Soilless Culture Conditions

Abstract

Effect of sowing and irrigation cutoff date on seed yield and irrigation water use efficiency of spring berseem clover in Khouzestan

Abstract

Comparing herbal yield, essential oil content and composition of anis hyssop (Agastache foeniculum Kuntze) in field and greenhouse conditions under drought stress

Abstract

Evaluation of water deficit stress tolerance induced by seed priming in wheat (Triticum aestivum L.) cultivars

Abstract

Effects of biological and chemical phosphorus fertilizers on growth analysis of maize S.C. 704 with different irrigation regimes

Abstract