Rafiqul Islam

Rafiqul Islam
International Rice Research Institute | IRRI · Plant Breeding

PhD

About

68
Publications
41,975
Reads
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651
Citations
Additional affiliations
April 2014 - present
IRRI
Position
  • Scientist (Plant Breeder)
October 2011 - March 2014
International Rice Research Institute
Position
  • PostDoc Position
August 1998 - October 2011
Bangladesh Rice Research Institute
Position
  • Principal Plant Breeder

Publications

Publications (68)
Article
Full-text available
In dry season paddy farming, the alternate wetting and drying (AWD) irrigation has the potential to improve water productivity and paddy production and decrease greenhouse gas (GHG), such as methane (CH4) and nitrous oxide (N2O), emissions when compared to continuous flooding (CF). Participatory on-farm trials were conducted from November 2017 to A...
Preprint
Full-text available
Rice genetic improvement is a key component of achieving and maintaining food security in Asia and Africa in the face of growing populations and climate change. In this effort, the International Rice Research Institute (IRRI) continues to play a critical role in creating and disseminating rice varieties with higher productivity. Due to increasing d...
Conference Paper
Full-text available
Bangladesh Rice Research Institute (BRRI) and other rice research organization released more than 115 inbred rice varieties but still old mega varieties i.e. BR11, Swarna, BRRI dhan28, BRRI dhan29 are dominating in farmers’ field. Most of these varieties were susceptible to different diseases and insects and causing lower yield performance than the...
Poster
Full-text available
In Bangladesh, the total production of rice is about 35 million tons from 11.4 million hectares of land area. However, the population of Bangladesh will reach 200 million by 2050. Most of the mega varieties of Bangladesh reached at yield plateau and further yield improvement protracted for a decade. However, to feed the 200 million populations of t...
Poster
Full-text available
In Bangladesh, approximately 4.2 million ha of rainfed rice lands are drought-prone where rainfall distribution is sporadic and uneven. Seeding of this rainfed rice coincided with high rainfall at early July and the crop is harvested at the end of November to December depending on the degree of photoperiod sensitivity. Because of their long growing...
Article
Full-text available
Ciherang has been a dominant variety in Indonesia for almost 2 decades and is considered to be a premium rice in Indonesia. Despite the importance of this variety, limited information is available regarding the genetic control of grain quality traits. A backcross population (Ciherang-Sub1*2/IRRI148) was developed for mapping a range of traits. This...
Article
Full-text available
Previous efforts to increase the yield of tropical rice have focused on medium‐duration varieties. However, there is increasing demand for high‐yielding short‐duration varieties that can adapt to intensified cropping systems and climate change. Our goal was to identify physiological traits associated with high yield in elite short‐duration genotype...
Article
Full-text available
Plant breeders evaluate large numbers of breeding lines/accessions and measure various traits in the field in order to identify and select elite genotypes with high yield. Therefore, information on highly correlated yield-related traits and simple high-throughput methods to predict grain yield would be useful for rice breeders. The objective of thi...
Article
Full-text available
Rice breeding of inbred varieties in the public sector has hardly changed in decades. This has been a cause for concern given that the current rate of yield improvement from new varieties is not considered to be adequate to meet future global demands for rice. In this article, we describe major changes to the irrigated breeding program and former p...
Chapter
Agriculture, including livestock, fishery and production of various crops, like rice, maize, sunflower, mustard, vegetables, fruits, etc., is the primary occupation of the people of Sundarbans. However, productivity of crops in this region is low due to preponderance of various factors, which include abiotic stresses like salinity, flooding, occasi...
Article
Full-text available
given orally are currently available mostly in the immediate release pattern for rapid absorption into the body. Layer tablets were a well-developed product effectively address these issues by including appropriate control strategies and establishing the functional relationships of the material attributes and process parameters critical to the laye...
Article
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Higher productivity of new varieties is the most common target for breeders. The discovery of new quantitative trait loci (QTLs) for important traits is an effective method to support this goal. The variety Ciherang has been dominant in Indonesia for many decades. The objective of this study was to identify QTLs for agronomic and yield-related trai...
Article
Full-text available
leaves contain different types of compound such as glycosides, alkaloids, flavonoids, tannin etc. In Brine Shrimp lethality bioassay, after 18hrs later the LC 50 of n-hexane extract of the M. hastata was 19.05µg/ml, after 2hours later 6.76 µg/ml and after 24hours later 0.99 µg/ml. After 18hours later the LC 50 of CHCL 3 extract was 22.90µg/ml, afte...
Article
Full-text available
Rice production needs to increase in the future in order to meet increasing demands. The development of new improved and higher yielding varieties more quickly will be needed to meet this demand. However, most rice breeding programmes in the world have not changed in several decades. In this article, we revisit the evidence in favour of using rapid...
Poster
Full-text available
The pedigree breeding method usually takes 3-4 years to develop genetically fixed lines, and is very expensive. Hence, it is imperative to use techniques that are cheaper and can shorten the time needed to develop breeding lines, and ultimately, be able to release new varieties after a shorter time period. RGA is a breeding approach that uses singl...
Article
The last 20 years has seen a tremendous growth in molecular genetics research and breeding rice. While there have been some outstanding successful examples of rice molecular breeding, there have also been many failures. Careful analysis of successes and failures indicates several critical factors including parameters of the quantitative trait loci...
Article
Productivity of rice is adversely affected by salinity and water logging stresses in coastal zones, and affected areas are progressively expanding as consequences of climate change and overexploitation of natural resources to meet the needs of increasing populations. Several varieties were developed and commercialized in this region in recent years...
Article
Full-text available
Selection of new rice (Oryza sativa L.) variety tolerant to soil salinity is one of the most important issues to avoid salt stress in rice production. In this study, the morphological characterization was performed on 5 rice genotypes under two salt stress treatments EC8 and 12 dS/m at seedling, EC 12 dS/m at vegetative and EC8 dS/m at reproductive...
Conference Paper
Full-text available
Soil salinity is a major problem along tropical coasts with predominantly rice-based farming systems. High salt stress occurs during the dry season and at transplanting in the wet season. More than 20 million ha of land suited to rice production in Asia are affected by excess salt and other soil-related problems, 7 million ha of it in India and Ban...
Article
Full-text available
ABSTRACT The major constraints of agricultural production in the south western coastal areas of Bangladesh are soil and water salinity of varying degrees, lack of fresh water for irrigation, slow soil drying pattern which are being augmented further due to climate change, requires suitable options of farming systems and component technologies. The...
Conference Paper
Soil salinity has increased by >20% during the past three decades, affecting an area of ~1.00 Mha in Bangladesh. Molecular breeding approaches are used to introgress favorable alleles and major-effect QTLs in to mega varieties to improve complex stress tolerance traits. Saltol is a major QTL identified from Pokkali in rice chromosome 1, linked to s...
Article
The experiment was carried out during two consecutive Transplanted Aman season (2011 and 2012) at Bazarkhali, Amtali, Barguna situated in low salt affected area in Southern Bangladesh. Mostly traditional rice varieties were cultivated during the T. Aman season in this area. Three sets of experiment were conducted in different sowing dates using twe...
Article
Full-text available
A set of rice varieties was evaluated during two consecutive T. Aman season in Kaliganj, Satkhira, situated in highly salt affected area. This area is occupied by huge number of gher where shrimp farming is very popular. Modern rice varieties were evaluated in this gher area to increase the agriculture and aquaculture production. Participatory vari...
Article
Full-text available
BR23, BRRI dhan40, BRRI dhan41, BRRI dhan53 and BRRI dhan54 possess salinity tolerance up to EC 8 dS m-1 in addition to high yield potential (> 4.0 t/ha), lodging tolerance and 10-38 days shorter growth duration over traditional rice varieties for the wet season. Development of BRRI dhan47, BINA dhan8, BRRI dhan53 and BRRI dhan55 for dry season was...
Article
Full-text available
The recent advancements in rice genomics offer a lot of promise for developing new varieties. The rapid advances made in plant physiology and biochemistry, molecular genetics, and structural and functional genomics demonstrated the ability to identify complex mechanisms of desirable traits and use them to develop rice breeding products combining mu...
Article
Full-text available
The very virulent infectious bursal disease virus (vvIBDV) infection cause constant and frequent outbreaks of IBD. In order to prevent the disease caused by vvIBDV, moderate-virulent live vaccines are usually used in broilers, but these vaccine influence the immune system of chickens and cause the immunosuppression. VAXXITEK® HVT+IBD bivalent vacci...
Article
Full-text available
A systematic field study was undertaken on the outbreaks of infectious bursal disease (IBD) during the period from June 2010 to May 2011 in commercial broiler farms of Bangladesh (562) and China (89). Overall prevalence due to the disease was recorded as 12.1 and 7.1% for Bangladesh and China, respectively, and mortality rate was 5.3 and 2.4% for B...
Article
Full-text available
Fourteen rice genotypes, composed of six salt tolerant, three submergence tolerant, two drought tolerant genotypes along with three high yielding genotypes, released from Bangladesh Rice Research Institute (BRRI) were used for genetic diversity analysis using 40 simple sequence repeats (SSR) markers. All of the used SSR markers were found polymorph...
Article
Full-text available
To determine the usefulness of SSR markers associated with a major QTL for salinity tolerance designated as 'SalTol', a collection of 115 diverse rice genotypes was phenotyped and genotyped using tightly linked DNA markers. These markers include five SSRs, RM1287, RM8094, RM3412, RM493 and RM140, and two EST markers, CP6224 and CP03970, on chromoso...
Article
Full-text available
Genetic diversity of 24 rice (Oryza sativa) genotypes comprising five salt tolerant, one tidal submergence tolerant, nine high yielding inbred and ten hybrid rice varieties were analyzed with one hundred SSR markers. The highest number of alleles were produced for RM1024 followed by RM6959 (21), RM154 (20), RM540 (19) and RM2518 (19) and the lowest...
Article
Full-text available
Genetic diversity of 24 rice (Oryza sativa) genotypes comprising five salt tolerant, one tidal submergence tolerant, nine high yielding inbred and ten hybrid rice varieties were analyzed with one hundred SSR markers. The highest number of alleles were produced for RM1024 followed by RM6959 (21), RM154 (20), RM540 (19) and RM2518 (19) and the lowest...
Article
Full-text available
An investigation was conducted in a six year old lemon (Citrus limon) garden during March to September 2007 to find out the effect of foliar spray with seven fungicides and a botanical on the severity of citrus scab (Elsinoe fawcettii) and dieback (Colletotrichum gloeosporioides) of the crop. The tested fungicides were Dinthane M 45 (0.30%), Rovral...
Article
Full-text available
The effect of a major quantitative trait locus (QTL) for salinity tolerance in rice, designated as SalTol in a previous study, was tested using three F2 breeding populations. The populations were derived from the following Fl hybrids: 'BRRI dhan40' (susceptible)/ 'IR61920-3B-22-2-1' (highly tolerant); 'BRRI dhan28' (highly susceptible)/ 'IR50184-3B...
Conference Paper
Full-text available
Rice is cultivated on 10.42 m ha in Bangladesh, including about 2 m ha drought-prone rainfed lowland rice. Drought-prone rice is mostly grown in the northwestern part of Bangladesh where the irrigation potential is limited and the rainfall is erratic (annual mean of 1200 mm). Drought occurs in the wet season mainly at the beginning of the cropping...
Article
Full-text available
We are the first to report the frequency response and corresponding current density of a wurtzite phase Indium Nitride (InN)-based vertical configuration Gunn diode at 1 \mu m active length. Domain growths dynamics with respect to space and time, variation of domain velocity and the field outside the vicinity of the domain with respect to domain fi...
Chapter
Full-text available
This book with 33 chapters divided into five parts is a compendium of selected papers from the conference that can be broadly categorized as land and water management, fisheries and aquaculture and rice-based agriculture systems. Intensification of aquaculture and rice-based agriculture frequently produces negative effects that range from environme...
Chapter
Full-text available
This book with 33 chapters divided into five parts is a compendium of selected papers from the conference that can be broadly categorized as land and water management, fisheries and aquaculture and rice-based agriculture systems. Intensification of aquaculture and rice-based agriculture frequently produces negative effects that range from environme...
Article
Full-text available
Genetic variability is the key for the development of new genotypes with desired combination of traits. Many times, the traditional donors for tolerance to stresses such as salinity look similar but differ in their response to the stresses. Molecular characterization of the genotypes gives precise information about the extent of genetic diversity w...
Conference Paper
Solar cells are one of the best alternatives compared to our conventional or fossil energy and, thus, can play an important role in energy economy in an environment friendly fashion in the coming years. The main barrier of this technology is its low efficiency. Though the maximum theoretical efficiency of a solar cell teaches up to 86% but the prac...
Article
Full-text available
BRRI dhan42 and BRRI dhan43 have been released for upland rice ecosystem of Bangladesh. These varieties are moderately drought tolerant having deep rooting ability, which is one of the major drought tolerant criteria. The special characters of these varieties are intermediate plant height, medium bold grain with white belly and high yield potential...
Article
Full-text available
Five fungicides viz., Dithane M-45 (Mancozeb), Bavistin 50 WP (Carbendazim), Ridomil MZ-72 (Metalaxyl + Mancozeb), Rovral 50 WP (Iprodione) and Tilt 250 EC (Propiconazole) were evaluated against purple blotch complex of onion (Var.-Taherpuri) caused by Alternaria porri and Stemphylium botryosum in field condition for seed production. Bulb treatment...
Article
Full-text available
Efficacy of eight selected treatments viz. Grafting (T1), Furadan 5G (T2), Bavistin (T3), Cupravit (T4), Trichoderma harzianum (Ts), Sawdust (T6), Khudepana (T7) and Control (Ts) were assessed against Fusarium oxysporum f.sp. lycopersici and Meloidogyne incognita for the management of fusarium and nemic wilt diseases of tomato during winter season...
Article
Full-text available
Eight selected treatments viz. Grafting on wild Solanum (Solanum sisymbriifolium), Furadan 5G, Cupravit 50 WP, Bavistin 50WP, Trichoderma harzianum T22, Sawdust and Khudepana (Azzola pinnata) were evaluated for their efficacy against Fusarium oxysporum f. sp. melongenae and Meloidogyne incognita causing wilt disease of eggplant during the winter se...
Chapter
Full-text available
Traditional rice landraces from coastal Bangladesh are adapted not only to soil salinity but also to excess magnesium, calcium and sulphate as well as zinc deficiency. They can also tolerate water inundation to a certain extent, because they may be subjected to tidal saline intrusion as well as water stagnation during the monsoon season. These land...
Article
Full-text available
Genetic variation of Oryza sativa L. landraces (LRs) collected from the saline coastal belt of Bangladesh, modern varieties (MVs), as well as Pokkali, Nona Bokra and salt tolerant modern varieties (SMVs) derived from the last two were analyzed with 60evenly distributed rice microsatellite DNA markers. A total of 196reproducible polymorphic alleles...
Article
Full-text available
Genetic diversity of 62 genotypes of irrigated rice originating from BRRI, IRRI and China were studied through Mahalanobis D<SUP>2</SUP>statistic. The genotypes were grouped into five clusters. The cluster II and IV contained the highest number of genotypes (16) and the cluster I contained the lowest (7). The highest intra cluster distance was noti...
Article
Full-text available
Fifty-six genotypes composed of BR, IR and rice-wheat back cross (RWBC) derivatives were evaluated at the DSR drought prone area of Chuadanga. Five genotypes viz. BR5543-5-1-2-4, BR5742-B-15-3-7-2, BR5943-B-10-1-1, BR6058-6-3-3 and IR56463-184-2-1-2 had drought recovering ability. In addition, these lines were grown 6-13 days earlier than the local...

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