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  • ISSN: 2333-6668
    Early Online
    Volume 6, Issue 1
    Short Communication
    Rahman MM*, Ivy NA, Mian MAK, Rasul MG, and Hossain MM
    The present investigation was carried out at Tissue Culture Laboratory of Breeding Division of Bangladesh Sugarcane Research Institute (BSRI), Ishurdi, Pabna on in vitro shoot regeneration of sugarcane callus during the period of 2011. The regeneration of sugarcane varieties with supplementation of cytokinin (1mg/l of BA) and auxin IBA and IAA 0.25mg/l, 0.50mg/l and 0.75 mg/l respectively, were used in sugarcane on defined MS media for shoot induction. The shortest days to shoot initiation and the highest number of shoot per culture were found in Isd 40. The highest shoot length was observed in Isd 37. The concentration of 1mg/l of BA and 0.50 mg/l of IBA showed the highest number shoots per culture and the highest shoot length. The combination of 1.0 mg/l BA and 0.5 mg/l of IBA produced the maximum number of shoots per culture and shoot length was noticed in Isd 40 and Isd 37 respectively. Between two types of auxin, IBA was found more effective than IAA at different concentrations tested for producing shoots.
    Mohammad Pouresmaeil* and Rouhollah Motafakkerazad
    Allelopathy is a natural phenomenon and an important interaction among plant species. In this investigation, allelopathic effects of yarrow's (Achillea millefolium) different organs aqueous extract were examined on germination and seedling growth of wheat (Triticum aestivum). This examination was conducted as completely randomized design with three replications in the University of Tabriz, Iran during summer 2017. All of the experiments were done in the lab condition and Petri dishes. The results indicated that the leaf, flower and whole plant extract caused a reduction in germination and growth of wheat seedlings. The highest reduction values in germination percentage and index, shoot, root and seedling length, shoot and root fresh weight and shoot and root dry weight were recorded at about 39, 43, 74, 78, 73, 66, 25, 56 and 33%, respectively. In contrast, the stem and root extract increased the mentioned parameters except germination percentage and germination index, about 11, 47, 26, 54, 220, 68 and 62%, respectively. The results showed that different organs of yarrow had dual allelopathic effects (both stimulatory and inhibitory effects) on wheat germination.
    Research Article
    Shahidul Islam*, Rafiqul Islam M, and Rafiqul Islam MD
    A field experiment was conducted at the Soil Science farm of Bangladesh Agricultural University, My mensingh during the Aman season of 2011 for investigating the integrated effect of prilled urea (PU) and urea super granules (USG) with poultry manure (PM) on field water property, growth and yield of BRRI Dhan 49. There were seven treatments such asT1: Control, T2: 56 kg N ha-1 as USG; T3: 83.5 kg N ha-1 as PU; T4: 56 kg N ha-1 as USG+PM (3.0 t ha-1); T5: 83.5 kg N ha-1 as PU+PM (3.0 t ha-1); T6: 112.5 kg N ha-1 as USG; T7: 165.0 kg N ha-1 as PU. Application of USG in combination with poultry manure produced NH4+-N slowly and steadily due to deep placement by keeping most of the urea nitrogen in the soil and out of the irrigation water. This resulted in continuous supply of available N throughout the growth period of rice plant, which ultimately gave the higher yield. Significant variations were found in all the yield contributing characters except thousand grain weight by different treatments over control. The highest grain yield (5389 kg ha-1) and straw yield (6921 kg ha-1) was produced from T4 which is statistically similar to T5 and T6. The maximum N uptake by grain (64.28 kg ha-1) and straw (40.91 kg ha-1) were obtained from USG in combination with poultry manure. It also showed the maximum values of apparent N recovery and N use efficiency possibly due to deep placement of USG and application of poultry manure in rice field. The overall results clearly indicate that application of USG in combination with poultry manure in rice field increases absorption efficiency and decreases N loss leading to water pollution reduction, efficient uptake and utilization of the applied N, and rice yield augmentation.
    Ummahan Cetin Karaca* and Emel Atmaca
    This study was planned as a two-year field trial so as to determine the differences in beans made by bacterial inoculation and molybdenum doses which are likely to have effects on yield and yield components. In this study, Akman 98 bean variety which has a widespread cultivation area as a plant material, three doses of molybdenum element (Mo0=without molybdenum, Mo1=0.05 ppm, Mo2=0.10 ppm) which is effective in nodule and enzyme mechanism were used. For inoculation material, Rhizobium tropici (CIAT899) bacteria which belongs to the bean was used. The study was planned according to factorial randomized block experimental designs and set up with four replications. Some agronomic features such as plant height, number of beans per plant, grain yield, thousand grain weight and beans were investigated. Looking at the two-year combined data, it was demonstrated that molybdenum application and inoculation have a significant effect on the properties examined in bean plant. While increases in molybdenum doses generally resulted in increases in yield and yield components, the highest yields (350 kgda-1) were achieved in the case of co-administration of molybdenum and inoculation.
    Rahman MM*, Ivy NV, Mian MVK, Rasul MG, and Hossain MM
    An experiment containing callus induction has been conducted at the Laboratory of Breeding Division of Bangladesh Sugarcane Research Institute (BSRI) during the period of 2011 at BSRI farm, Ishurdi, Pabna. Leaf sheaths of small segments of young meristem of five varieties viz. Isd 2-54, LJ-C, Isd 17, Isd 37 and Isd 40 were used as explant. These segments were cultured in MS medium containing different concentrations of 2,4-D (viz. 1.0, 2.0, 3.0, 4.0 and 5.0 mg/l) for homogeneous callus induction. Varietal response on application of 2, 4-D, the variety Isd 17 showed the best results in callus induction. Among the five concentrations of 2, 4-D, the best response was exhibited in 3.0 mg/l of 2,4-D. Regarding interaction effect of varieties and doses of 2,4-D, the highest percentage (100%) of explants induced callus was recorded in variety Isd 17, Isd 40 and Isd 2-54 on 3.0 mg/l of 2,4-D respectively.
    Research Article
    Orlanda Pvoa*
    Jacaranda is a deciduous tree from South America, used as an ornamental tree due to its abundant flowering, usually found in South Portugal. The tree also has forest interest.
    Fruits were harvested in 2010, 2013, 2015 and 2017 in the city of Elvas. From the samples collected in 2013 and 2017, two fruit subsamples were obtained: a) dark brown fruits, whose maturation was reached in the previous year and b) light brown fruits, whose maturation was reached in the harvest year. In 2015, 2 subsamples were also collected: a) dark brown fruits and a mixture of all fruits types. The samples were threshed, labeled and conditioned in a refrigerator (ca. 5°C). The germination assays were carried out at 20°C with 12 h of photo phase. Final observations were obtained after 21 days.
    The germination results ranged from 11.3% (dark brown, old fruits) to 93.5% (light brown, new fruits). The best results, without significant statistical difference between samples, ranged from 70 to 93.5%, indicating that the seeds of this species harvested in Alentejo (Elvas) have high germination capacity. In the fruit harvesting operations, it is important to separate the fruits, because in the 3 tested samples of seeds harvested in different years, the seeds obtained from light brown, new fruits, had higher germination rates (9 to 35% more), with significant statistical difference from dark brown, old fruits. The seeds harvested in 2010 maintained their germination capacity (71%) when stored in a refrigerator (ca. 5°C) for 7 years.
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