Bangladesh Institute of Nuclear Agriculture

Mymensingh, Bangladesh

Bangladesh Institute of Nuclear Agriculture

Mymensingh, Bangladesh
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Monjurul Alam Mondal M.,Bangladesh Institute of Nuclear Agriculture | Fakir S.A.,Bangladesh Agricultural University | Ismail M.R.,University Putra Malaysia | Ashrafuzzaman M.,University Putra Malaysia
Australian Journal of Crop Science | Year: 2011

Loss of foliage in mungbean [Vigna radiata (L.) Wilczek] crop through leaf eating insects and diseases is common in tropical and sub-tropical countries where farmers do not protect their crops adequately. Experiments were carried out with eight levels of defoliations (0, 25, 50 and 75% either from top or from base of the canopy, and 100%) to investigate the growth, reproductive characters, and yield attributes in two high and two low yielding mungbean genotypes. Results revealed that degrees of defoliations parallely decreased leaf area and total dry matter (TDM) production irrespective of seasons and genotypes. Defoliation not only reduced source sizes but also decreased total sink (flower) production resulting in lower pod and seed yields. However, basal 25% defoliation did not significantly decrease TDM and seed yield plant -1 indicating the fact that the mungbean plant, in general, can tolerate 25% basal leaf loss of the canopy. Furthermore, the high yielding genotypes showed higher compensatory mechanism of source loss than the low yielders. Exceeding this threshold limit (> 25%) either from the base or from the top of the canopy defoliation significantly reduced TDM and seed yield. Reduction in yield was higher with top defoliation than basal defoliation. Implication of the results in relation to pest management is also discussed.

Khanam S.,United Arab Emirates University | Khanam S.,Bangladesh Institute of Nuclear Agriculture | Sham A.,United Arab Emirates University | Bennetzen J.L.,University of Georgia | And 2 more authors.
Australian Journal of Crop Science | Year: 2012

Date palm breeding is challenging because of its long juvenility and dioecity. Genetic variation between cultivars is a pre-requisite to develop improved varieties. DNA fingerprinting is an effective method for date palm cultivar identification, examining genetic diversity and phylogenetic analysis. This review discusses the different markers used in DNA fingerprinting and phylogeny analysis of date palm varieties and the advances achieved. The date palm fingerprint analyses reported so far are neither comprehensive nor particularly clear because of variable variety nomenclature, a large number of uninvestigated new introductions, and uneven geographic sampling, which itself leads to inconsistent nomenclature. Most of the molecular markers utilized such as RAPD, RFLP, AFLP, ISSR and SSR have some limitations related to their cost, ease of use, robustness, dominance/co dominance and polymorphism level. Nuclear Microsatellite or (SSR) markers seem to fulfill most of the requirements to achieve accurate analysis of date palm fingerprints and phylogeny. The need for coordinated international, or at least regional, efforts to establish a comprehensive DNA fingerprint data set and phylogeny of all date palm cultivars is discussed in this review.

Karim M.R.,Hokkaido University | Ishikawa M.,Hokkaido University | Ikeda M.,Hokkaido University | Islam T.,Bangladesh Institute of Nuclear Agriculture
Agronomy for Sustainable Development | Year: 2012

In Bangladesh, projected climate change is expected to increase food demands by more frequent and intense droughts and increasing temperatures. Few investigations have studied the impact of climate variability on future rice production. Previous investigations mainly checked the sensitivity of higher air temperature and higher atmospheric carbon dioxide on rice yields. Whereas in this study, we checked the combined effects of major climatic parameters on rice. The effects of climate change on yield of a popular winter rice cultivar in Bangladesh were assessed using the biophysical simulation model ORYZA2000. This model was first validated for 2000-2008 using field experimental data from Bangladesh, with a careful test of climate data on daily basis for station-wise and reanalysis datasets. The model performance was satisfactory enough to represent crop productions in nine major rice-growing districts. Then, simulation experiments were carried out for 2046-2065 and 2081-2100. Results show 33 % reduction of average rice yields for 2046-2065 and 2081-2100 for three locations. Projected rainfall pattern and distribution will also have a negative impact on the yields by increasing water demands by 14 % in the future. The model also showed that later transplanting will have less damage under the projected climate. © INRA and Springer-Verlag, France 2012.

Mondal M.M.A.,Bangladesh Institute of Nuclear Agriculture
Legume Research | Year: 2012

The field experiment was conducted at the Field Laboratory of the Bangladesh Institute of Nuclear Agriculture, Mymensingh, Bangladesh during the period from July to November 2010 to investigate the effect of foliar application of urea on yield of soybean. The experiment comprised four levels of urea foliar application viz. T1 (control), T2 (application of 1.5% urea once at the beginning of flowering), T3 (application of 1.5% urea twice from the beginning of flowering with an interval of 10 days) and T4 (application of 1.5% urea thrice from the beginning of flowering to pod development stage with an interval of 10 days). Results indicated that seed yield of soybean was higher in foliar urea applied plants than control plants which was maximum in T4 treatment which showed superiority in physiological characters (leaf area index, total dry mass plant1, absolute growth rate, chlorophyll and harvest index) and yield attributes (number of pods plant1, number of seeds pod1 and 100-seed weight) over other treatments. Therefore, three times foliar application of urea @ 1.5% at reproductive stages may be used for getting increase seed yield in soybean.

Mondal M.M.A.,Bangladesh Institute of Nuclear Agriculture | Hakim M.A.,University Putra Malaysia | Hakim M.A.,Hajee Mohammad Danesh Science and Technology University | Juraimi A.S.,University Putra Malaysia | And 2 more authors.
African Journal of Biotechnology | Year: 2011

Field experiments were conducted in 2006 and 2007 under subtropical conditions to investigate the variations in growth and reproductive characters, and yield attributes for selection of important source and sinks characters using correlation and path coefficient analyses in 45 mungbean genotypes. Large genetic variability existed in source characters viz., leaf area index (LAI) (1.22 to 3.80) and sink characters viz., number of racemes plant -1 (6.30 to 22.9), flowers plant -1 (18.1 to 51.9) and pods plant -1 (9.6 to 22.1). Genotypic correlation study revealed that among the traits investigated, LAI was the most important source that determined total dry mass (TDM) yield, and reproductive characters like number of racemes, flowers and pods plant -1 were the most important sinks that determined seed yield. Contrarily, reproductive efficiency (RE, % pod set to opened flowers) did not show significant relationship with pod number and seed yield, indicating that selection of high yield based on RE may be misleading. Path coefficient analysis further revealed that number of flowers, pods and 100-seed weight constituted central important sinks which exerted direct positive influence on seed yield. The results indicated that pod yield could be increased by increased raceme and flower production, while seed yield could be increased by increasing pod production. High yielding genotypes, in general, possessed higher earlier mentioned source (LAI) and sink (flower and pod number) characters which resulted in higher seed yield in mungbean. This information could be exploited in the future plant breeding programmes. © 2011 Academic Journals.

Malek M.A.,Bangladesh Institute of Nuclear Agriculture | Malek M.A.,University Putra Malaysia | Rahman L.,Bangladesh Agricultural University | Rafii M.Y.,University Putra Malaysia | Salam M.A.,Bangladesh Institute of Nuclear Agriculture
Journal of Food, Agriculture and Environment | Year: 2013

More than two hundred soybean germplasm collected from local and exotic sources were put into evaluation to select desirable ones for directly use as varieties or for future usage as breeding materials. Through observation trials thirteen germplasm were selected considering their better agronomic performance. Selected germplasm were evaluated through different trials at soybean growing areas of Bangladesh during 2007 to 2010. The germplasm, BAU-S/109 produced significantly higher seed yield than control varieties Sohag and BARIsoybean-5 in most of the trials. Over three years trial, BAU-S/109 produced mean seed yield of 2711 kg ha-1 while Sohag and BARIsoybean-5 produced 2224 and 2227 kg ha-1 seed yield, respectively. BAU-S/109 also produced the higher number of branches and pods plant-1 along with higher 100-seed weight. Results of yield trials indicated that BAU-S/109 was suitable for cultivation in Bangladesh. BAU-S/80 was found to be moderately tolerant to soybean yellow mosaic virus and also showed lower insect infestation than control varieties. On the basis of better performance, Bangladesh Institute of Nuclear Agriculture (BINA) applied for registration of BAU-S/109 to the National Seed Board (NSB) of Bangladesh. Consequently, the NSB of Bangladesh registered BAU-S/109 as an improved soybean variety in 2011 as Binasoybean-2 for commercial cultivation.

Puteh A.B.,University Putra Malaysia | Monjurul Alam Mondal M.,University Putra Malaysia | Monjurul Alam Mondal M.,Bangladesh Institute of Nuclear Agriculture
Journal of Food, Agriculture and Environment | Year: 2014

The experiment was carried out to assess the effects of three soil moisture levels, 100, 70 and 50% of field capacity (FC), on three promising rice mutants viz., RM250-172, RM250-940 and RM250-1085. The three levels of water stress were imposed at booting stage and continued up to maturity. Results indicated that morphological parameters such as plant height and leaf area, physiological parameters such as biological yield, absolute growth rate, harvest index, chlorophyll content and photosynthesis, yield attributes such as number of effective tillers hill-1, number of grains panicle-1 and 1000-grain weight were decreased with gradual increasing of water stress levels while number of non-effective tillers hill-1 and unfilled grains panicle-1 showed the reverse trend. The highest value of the above parameters was observed in 100% FC (control) and the lowest values of them were observed at 50% FC. Generally genotypes having ability to maintain high chlorophyll as well as photosynthesis under water stress were found drought tolerant in respect of dry mass production and yield attributes. Among the genotypes, the dry matter production and yield loss due to water stress were less in RM250-940 than that in others, which further revealed that RM250-940 had a greater tolerance to moderate water stress than RM250-1723 and RM250-1085.

Monjurul Alam Mondal M.,University Putra Malaysia | Monjurul Alam Mondal M.,Bangladesh Institute of Nuclear Agriculture | Puteh A.B.,University Putra Malaysia | Razi Ismail M.,University Putra Malaysia | Yusop Rafii M.,University Putra Malaysia
International Journal of Agriculture and Biology | Year: 2013

The experiment was performed under sub-tropical condition (24.75 N and 90.50 E) during the period of December 2011 to May 2012 to evaluate the effect of spacing on assimilate availability, yield attributes and yield of modern rice varieties. Four modern rice cultivars BINAdhan5, BINAdhan6, Iratom and BRRIdhan29 were sown with three spacing viz., 20 cm×20 cm, 20 cm×15 cm and 20 cm×10 cm. The experiment was laid out in a split-plot design with four replicates. Wider spacing of 20 cm×20 cm had shown superior performance in respect of all morpho-physiological and yield components, which resulted in the highest grain yield (8.53 t ha-1). In contrast, closer spacing of 20 cm×10 cm showed inferior performance in respect of above studied parameters and produced the lowest grain yield (6.47 t ha-1). Among the cultivars, BRRdhan29 and BINAdhan6 performed the best regarding yield attributes and produced the highest grain yields (7.53 and 7.72 t ha-1, respectively). The spacing of 20 cm×20 cm may be recommended for cultivation of high yielding modern rice instead of recommended spacing of 20 cm×15 cm after few more trials in farmers' field. © 2013 Friends Science Publishers.

Ali M.H.,Universiti Sains Malaysia | Abustan I.,Universiti Sains Malaysia | Rahman M.A.,Bangladesh Institute of Nuclear Agriculture | Haque A.A.M.,Universiti Sains Malaysia
Water Resources Management | Year: 2012

Water is essential for economic, social, and environmental development. Global water resources are vulnerable due to increasing demand related to population growth, pollution potential, and climate change. Competition for water between different sectors is increasing. To meet the increasing demand, the use of groundwater is increasing worldwide. In this paper, the water-table dynamics of the north-eastern region of Bangladesh were studied using the MEKESENS software. This study reveals that the depth to water-table (WT) of almost all the wells is declining slowly. In many cases, the depth will approximately double by the year 2040, and almost all will double by 2060, if the present trend continues. If the decline of the water-table is allowed to continue in the long run, the result could be a serious threat to the ecology and to the sustainability of food production, which is vital for the nation's food security. Therefore, necessary measures should be taken to sustain water resources and thereby agricultural production. Demand-side management of water and the development of alternative surface water sources seem to be viable strategies for the area. These strategies could be employed to reduce pressure on groundwater and thus maintain the sustainability of the resource. © 2011 Springer Science+Business Media B.V.

Fakir M.S.A.,Bangladesh Agricultural University | Mondal M.M.A.,Bangladesh Institute of Nuclear Agriculture | Ismal M.R.,University Putra Malaysia | Ashrafuzzaman M.,University Putra Malaysia
International Journal of Agriculture and Biology | Year: 2011

A large proportion of flowers abort during development due to vascular tissue limitation in the distal part of rachis resulting in lower yield in mungbean [Vigna radiata (L.) Wilczek]. Flowering pattern and its relationships with pod retention, reproductive efficiency and yields in 10 local mungbean genotypes were assessed at Mymensingh, Bangladesh in two consecutive years of 2006 and 2007. The number and pattern of flower production, pod retention and reproductive efficiency (RE, percent pod set to opened flowers) varied among the genotypes. Results revealed that the genotypes, which produced higher number of flowers within a shorter period (10-15 days) after commencement of flowering also produced higher yields, attributed from higher number of flowers and pods. In contrast, low yielding genotypes showed reverse trends. However, low yielding genotypes had higher RE than high yielding ones. It further revealed that the genotype with early-formed flowers had higher podset and retention capacity than later-formed ones. The implication of relationships between flower production and RE for mungbean seed yield is also discussed. © 2011 Friends Science Publishers.

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