Browsing by Author "Bir, Md. Shahidul Haque"

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Analysis of genetic polymorphisms in somaclonal variants of strawberry by RAPD markers
(Bioscience Research, 2018) Bir, Md. Shahidul Haque; Haque, Md. Samiul; Haque, M. Mahbubul; Nath, Uzzal Kumar; Khatun, Roushan Ara; Ali, Mohammad; Soh, ,EunHee; Park, Kee Woong
The understanding of the importance of dietary berries of maintaining human health has led to unrestrained increase of global strawberry crop production. The present work was conducted for molecular characterization and selection of genetically pure somaclonal variants of strawberry. For molecular characterization, RAPD (Random Amplified Polymorphic DNA) markers namely instead OPK 01, OPK-02, and OPK-03, showed good technical resolution and sufficient variations among the somaclonal variants. A total of 29 RAPD bands were scored, of which 27 (94.87%) by using these arbitrary primers were obtained by polymorphic amplification products. OPK-01 produced the number of polymorphic bands of 100-700 bp compared to OPK-02 and OPK-03. All the somaclonal variants produced polymorphic bands with three RAPD markers suggesting that the somaclonal variants were different from each other and genetic divergence were present among them. Thus, these markers could be used for comparison of the genetic relationships, determination of patterns of genetic variation, and measurement of genetic distance among the somaclonal variants of strawberry.
Crop ecosystem responses and weed population under elevated temperature regimes
(Bioscience Research, 2019) Bir, Md. Shahidul Haque; Aktar, Most Mohshina; Uddin, Md. Romij; Khaitov, Botir; Park, Kee Woong
The negative effects of weed infestation in paddy fields and increasing temperature are considered as the main factors of reducing rice grain yield. This study conducted to reveal the competitive interaction between rice (upland rice Dongjin 1) and weeds with different densities at ambient and 0.8℃, 1.9℃, and 3.4℃ above ambient temperature in special phytotrons at Chungnam National University, Daejeon, Korea. The competition between rice and weeds was created in the following three treatments: 1. Natural occurrence of weeds is naturally grown from the soil seed bank, 2. Standard density, the following weeds were grown in the plots: EO (Echinochl oaoryzicola) 1g, Mv (Monochoria vaginalis) 1 g, Lp (Ludwigia prostrata) 1 g, Ek (Eleocharis kuroguwai) 15 tuber, Sp (Scirpus planiculmis) 15 tuber, SS (Sagittaria sagittifolia) 15 tuber, Lpr (Lindernia procumbens) naturally occurred, Rp (Rotala pusilla) naturally occurred. 3. High density, the following weeds were grown in the plots: EO=2 g, Mv=2 g, Lp=2 g, Ek=30, Sp=30, SS=30, Lpr naturally occurred, Rp naturally occurred. Results presented that rice growth parameters such as height, the number of tillers, and shoot dry weight were increased with the increase of ambient temperature. However, rice yield negatively correlated with the increase of temperature, especially, caused enhancing the panicle senescence at the pollination period and shortening the grain filling period. The lowest rice yield was observed in high weed density treatment followed by standard weed density of weed treatment compared to natural weed occurrence treatment. From the perspective of rice: weed competitions, generally weeds exhibited more competitive ability than rice in this interspecific competition.
Effect of Crop Establishment and Weed Control Method on Productivity of Transplanted aman Rice
(Weed & Turfgrass Science, 2018) Ali, Mohammad; Bir, Md. Shahidul Haque; Rahman, Md. Habibur; Ayesha, Sultana Kaniz; Hoque, Aminul; Harun-Ar-Rashid, Md.; Islam, Md. Rashidul; Park, Kee Woong
This experiment was conducted to find the most suitable crop establishment method and weed management practices for transplanted aman rice in Bangladesh. Rice variety Bangladesh Rice Research Institute (BRRI) dhan44 was used as planting materials where three crop establishment methods (T1: direct wet seeding by drum seeder; T2: hand broadcasting; T3: transplanting) and four weeding options (W1: Hand weeding (HW); W2: BRRI weeder+HW; W3: Herbicide+HW; and W4: no weeding) were tested. Among the crop establishment methods, the highest grain yield (5.12 t ha-1) was obtained with the T3, while the highest benefit cost ratio (BCR) of 2.08 was found in T2. In case of the weed management method, W1 showed superior results on the plant density/m2 (139.66) at 60 days after transplanting (DAT), grain yield (4.97 t ha-1), and BCR (2.03). On the other hand, the highest plant dry matter (36.20 g) at 60 DAT and the highest yield (6.10 t ha-1) were obtained in a T3W1 combination. The results of this study show that the productivity of rice during aman season could be most significantly increased with the use of transplanting (T3) alone, hand weeding (W1) alone, or a combination of the two methods (T3W1).
Effect of crop establishment method and N management practice on productivity of transplanted aman rice
(Bioscience Research, 2018) Bir, Md. Shahidul Haque; Ali, Mohammad; Rahman, Md. Habibur; Ayesha, Sultana Kaniz; Hoque, Aminul; Rashid, Md. Harun-Ar; Islam, Md. Rashidul; Cho, Jin-Woong; Park, Kee Woong
An experiment was conducted at the Bangladesh Rice Research Institute Regional Station, Rajshahi, Bangladesh to find the most suitable crop establishment method and best application of N management practice for transplanted aman rice. The monsoon-season rainfed rice is aman, which is planted in two ways: direct seeding in March or April and transplantation between July and August. Both types are harvested from November through December. T. aman rice variety, BRRI dhan44 was used as planting material where three crop establishment methods (T1: direct wet seeding by drum seeder, T2: hand broadcasting and T3: transplanting) and four N management practices (N1: ⅓ at 15 DAT+ ⅓ at 30 DAT +⅓ at panicle initiation (PI), N2: ¼ at basal + ¼ at 15 DAT + ¼ at 30 DAT + ¼ at PI, N3: leaf color chart (LCC) based N application, N4: no nitrogen) were tested. Among crop establishment methods, the transplanting method (T3) produced the highest plant density m-2 (143.16) and yield (5.05 t ha–1 ). Among N management practices, N2 gave the greatest yield (4.97 t ha–1 ) and the highest benefit cost ratio (1.97). Treatment combination of T3N2 at 60 DAT produced the highest plant density m-2 (152.33). Therefore, from the current study, it can be concluded that the transplanting method (T3) and N split fertilization of ¼ at basal + ¼ at 15 DAT + ¼ at 30 DAT + ¼ at PI (N2), singly or together, would be the most productive application treatments during aman season.
Genetic diversity analysis of high yielding rice (Oryza sativa) varieties cultivated in Bangladesh
(Korean Journal of Agricultural Science, 2021) Epe, Isma Akter; Choudhury, Abul Kashem; Bir, Md. Shahidul Haque; Khatun, Asma; Aktar, Most Mohshina; Arefin, Md. Shamsul; Islam, Mohammed Aminul; Park, Kee Woong
Investigation of genetic diversity and molecular characterization in high yielding rice varieties is important for their identification. The experiment was conducted during 2016 - 2017 to analyse the genetic diversity of fifteen high yielding rice varieties in Bangladesh by using random amplification of polymorphic DNA (RAPD) markers. Polymorphism was revealed in 12 RAPD primers out of 30, whereas no other reaction was detected on the remaining 18 primers. The 40 out of 45 bands (88.89%) polymorphics were produced by the primers and ranged from 50 to 100%. The maximum number of polymorphic bands was produced by the primer OPB-18 whereas the lowest number of polymorphic bands belonged to OPC-12. The genetic similarity coefficients were determined with the RAPD data, which ranged from 0.47 to 0.94. The unweighted paired group of arithmetic means (UPGMA) dendrogram presented the studied rice varieties into two major clusters. Moreover, the value of Nei’s genetic diversity is 0.26 and the Shanon information index is 0.41. The study produced distinct positions, suggesting that the genotypes were different from each other. The results indicated that these markers could be efficient for comparing the genetic relationships, patterns of variation, and measurement of genetic distance among rice varieties. Considering all of these results, RAPD analysis is found to be an effective tool for estimating the genetic diversity of different rice varieties. The outcomes of this research may contribute to the germplasm data of rice accessions and a future breeding program of rice genotypes.
Growth Competition between Rice (Oryza sativa) and Barnyardgrass (Echinochloa oryzicola) under Varying Mono-/Mixed Cropping Patterns and Air Temperatures
(mdpi, 2024) Bir, Md. Shahidul Haque; Ali, Md. Arshad; Aktar, Most Mohshina; Park, Kee Woong; Shahbaz, Muhammad; Chong, Khim Phin; Shahid, Muhammad Shafiq; Panfilova, Olga; Ondrasek, Gabrijel
Increase in the concentration of atmospheric greenhouse gases significantly contributes to global warming, representing a substantial challenge for crop production. The study was conducted to determine the growth competition between rice (Oryza sativa) and barnyardgrass (Echinochloa oryzicola) under (i) different cropping patterns and (ii) elevated air temperatures in phytotrons under field condition, at two plant densities (4 and 16 plants per pot). Rice and barnyardgrass were planted with varying cropping patterns (rice: barnyardgrass mixture proportions); 100:0, 75:25, 50:50, 25:75 and 0:100. Air temperatures were maintained in phytotrons as follows: Ambient– A (Control), A +0.8 ◦C, A +1.9 ◦C and A +3.4 ◦C. Plant attributes such as plant height, number of effective tillers, shoot dry weight and grain yield of rice were recorded in this study in the rice/barnyardgrass mixture proportions in the order of 100:0 > 75:25 > 50:50 > 25:75. The highest rice grain yield (37.7 g/pot) was recorded in the monoculture (100:0 rice/barnyardgrass) under ambient temperature, whereas the lowest rice grain yield (0.3 g/pot) was recorded at the 25:75 rice/barnyardgrass mixture proportion under ambient +3.4 ◦C. The increase in temperature had a significant impact on growth, number of tillers and shoot dry weight of both rice and barnyardgrass plants and followed the order of ambient +3.4 ◦C > ambient +1.9 ◦C > ambient +0.8 ◦C > ambient. However, higher temperature negatively affected the yield of rice and resulted in a substantial decrease in the grain yield. Barnyardgrass showed the highest plant characteristics when grown alongside rice compared to the growth in monoculture. This indicates that barnyardgrass was highly competitive when grown under interspecific competition compared to an intraspecific competition. In contrast, rice grew better in monoculture than in mixture with barnyardgrass
Growth Response of Weed Species in a Paddy Field under Elevated Temperatures
(Department of crop science, Chungnam National University, Daejeon 34134, Korea, 2018) Bir, Md. Shahidul Haque; Hien, Le Thi; Won, Ok Jae; Bo, Aung Bo; Ruziev, Farrukh; Umurzokov, Mirjalol; Jia, WeiQiang; Yun, Hye Jin; Khaitov, Botir; Park, Woong
The present study aimed to investigate the growth response of rice and paddy weeds under varying temperatures created artificially in the phytotron under field condition. Rice (Oryza sativa L.), three annual (Ludwigia prostrata, Monochoria vaginalis, and Echinochloa oryzicola) and three perennial (Scirpus planiculmis, Eleocharis kuroguwai, and Sagittaria sagittifolia) paddy weeds were grown under different temperature regimes (ambient, ambient+0.8°C, ambient+1.9°C, and ambient+3.4°C). It was observed that the growth of both rice and paddy weed species increased with the elevation of temperature. However, the growth of weeds was much greater than that of rice under elevated temperature. The shoot dry weight of rice was 8.9%, 13.1%, and 30.4% greater at the ambient+0.8, +1.9 and +3.4℃, respectively compared to the ambient temperature. Among the paddy weed species, L. prostrate exhibited the most significant increased level of both dry weight and leaf area presenting 211.8% and 214.3% higher, respectively at the ambient+3.4℃ than that of the ambient temperature. Growth of E. oryzicola and M. vaginalis were slightly higher compared to the growth of rice under elevated temperature. The growth of perennial weed species of S. sagittifolia exhibited 124.8% higher dry weight at the ambient+3.4℃ than at the ambient. Our findings suggest that elevation temperatures might provide an even greater competitive advantage to weeds with concomitant negative effects on rice productio
Impact and adaptation strategies of climate change in agricultural extension system in Bangladesh
(Bioscience Research, 2018) Bir, Md. Shahidul Haque; Haider, M. Raisul; Haque, M. Mahbubul; Islam, Md. Shamimul; OH, Taek-Keun; Park, Kee Woong
Facing the adverse effects of climate change is one of the biggest challenges for the country of Bangladesh. As a low lying downstream riparian country (70 percent of land area is 5 m or less above sea level), Bangladesh is one of the country’s most vulnerable to extreme climate events and the impact of climate change, from both flooding and sea water intrusion. Climate change is already affecting agricultural production with most alarming adverse effects in Bangladesh. Extreme weather conditions have changed the overall distribution of yearly rainfall, shifted cropping seasons, increased infestation of crops by pests and diseases, made the water-table decline in the Barind tract and some other areas. At the same time, demand for food is rapidly increasing with the population. Enhancing resilience is a major challenge not only for agricultural sustainability but also for the substantial non-farm rural economy. Hence, the development of climate resilient technology and adaptation strategies for food security, economic stability, and livelihood security of the people are crucial. In this article, an attempt was made to describe the threat of climate change, to highlight it’s the mitigation process, and to present practical implication for extension systems in facing the challenge of climate.
Impact of short duration and high yielding aman rice varieties in Manga areas of Bangladesh
(Journal by Innovative Scientific Information & Services Network, 2018) Bir, Md. Shahidul Haque; Islam, Md. Monjurul; Ali, Mohammad; Mazumder, Mohammad Nurun- Nabi; Nain, Julkar; Islam, Md. Shahidul; Islam, Md. Rashidul; OH, Taek-Keun; Park, Kee Woong
„Manga‟, a near-famine situation which hits the northern region of Bangladesh every year, has forced poor people either to borrow money from usurers at an excessively high interest rate or to sell their labor in advance at an unusually low rate to keep their families from starvation. Many people sell their meager produce of aman crops well before harvesting to tide them over during the acute shortage of employment and food. The five districts of the northern region of Bangladesh that are most affected by manga are Kurigram, Gaibandha, Lalmonirhat, Nilphamari, and Rangpur. Other locations significantly affected are the areas cultivated with rice variety Binadhan-7, which is grown for its low crop duration of 110-120 days and for its average yield of 4.07 t/ha. These characteristics are similar to those of local rice varieties Sarna (4.29 t/ha) and BR-11 (4.29 t/ha). Early maturing rice varieties, which are harvested during aman, facilitate rabi crop cultivation (winter crops). These crops include potato, mustard, and wheat among others. The cultivation of early maturing varieties also allows for the engagement of farm laborers in harvesting and processing activities during the manga period of October and November.
Probabilistic exposure assessment, a risk based sampling plan and food safety performance evaluation of common vegetables (tomato and brinjal) in Bangladesh
(Korean Journal of Agricultural Science, 2021) Mazumder, Mohammad Nurun-Nabi; Bo, Aung Bo; Shin, Seung Chul; Jacxsens, Liesbeth; Akter, Tahmina; Bir, Md. Shahidul Haque; Aktar, Most Mohshina; Rahman, Md. Habibur; WeiQiang, Jia; Park, Kee Woong
Along with the widespread use of pesticides in the world, concerns over human health impacts are rapidly growing. There is a large body of evidence on the relationship between the exposure to pesticides and the elevated rate of chronic diseases such as different types of cancers, diabetes, neurodegenerative disorders like Parkinson, Alzheimer, and amyotrophic lateral sclerosis (ALS), birth defects, and reproductive disorders. This research assessed the health risk of pesticide residues by the dietary intake of vegetables collected from the agro based markets of Dhaka, Bangladesh. As some of the banned pesticides were also found in vegetable samples, they may pose a higher risk because of cheaper availability and hence the government of Bangladesh should take strong measures to control these banned pesticides. Five organo phosphorus (chlorpyrifos, parathion, ethion, acephate, fenthion) and two carbamate (carbaryl and carbofuran) pesticide residues were identified in twenty four samples of two common vegetables (tomato and brinjal). The pesticide residues ranged from below a detectable limit (< 0.01) to 0.36 mg·kg-1. Acephate, chlorpyrifos, ethion, and carbaryl were detected in only one sample, while co-occurrence occurred twice for parathion. Continuous monitoring and strict regulation should be enforced regarding the control of pesticide residues in fresh vegetables and other food commodities in Bangladesh.
Weed Population Dynamics under Climatic Change
(Weed & Turfgrass Science, 2012) Bir, Md. Shahidul Haque; Eom, Min Yong; Uddin, Md. Romij; Park, Tae Seon; Kang, Hang Won; Kim, Do Soon; Park, Kee Woong
This paper provides some of the scientific background on how projected environmental conditions could affect weeds and weed management in crops. Elevated CO2 levels may have positive effects on crop competitiveness with C4 weeds, but these are generally outnumbered by C3 species in weed populations. Moreover, higher temperatures and drought will favor C4 over C3 plants. The implementation of climate change adaptation technologies, such as drought-tolerant germplasm and water-saving irrigation regimes, will have consequences for crop–weed competition. Rainfed production systems are thought to be most vulnerable to the direct effects of climate change and are likely to face increased competition from C4 and parasitic weeds. Biotic stress-tolerant crop cultivars to be developed for these systems should encompass weed competitiveness and parasitic-weed resistance. In irrigated systems, indirect effects will be more important and weed management strategies should be diversified to lessen dependency on herbicides and mechanical control, and be targeted to perennial rhizomatous (C3) weeds. Water-saving production methods that replace a weed-suppressive floodwater layer by intermittent or continuous periods of aerobic conditions necessitate additional weed management strategies to address the inherent increases in weed competition. Thus, climatic conditions have a great effect on weed population dynamics all over the world.