The Sundarbans mangrove is a highly dynamic ecosystem. Gewa (Excoecaria agallocha Linn.) is a codominent species, the merchantable growing stock of which was depleted by 45% during 1959 to 1983. The purpose of this study was to obtain information on phenology, genetic diversity, improvement of selection, and suitable propagation system and hedge development and management as a step towards sustainable management of the species and enhances the productivity of the mangrove forests. Gewa is a commercially important hardwood species. So it is an urgent need to improve this species for...

The present work deals with variability, correlation, path-coefficient and selection index for eleven quantitative characters in chickpea. Variability of the studied characters exhibited that they were quantitative in nature and under polygenic control. For all the characters phenotypic variation was greater than those of environmental components of variation. Phenotypic coefficients of variability (PCV) in general were higher than the estimates of genotypic coefficient of variability (GCV) for all the characters, which suggested that the apparent variation is not only due to the genotypes...

Diversity of Gymnospermic plants in Bangladesh was carried out. 20 species of different families were collected and identified. A complete taxonomic account of each species with current nomenclature, different common names, description of the plant, cultivation, geographic description and uses were described. The country has four wild species, C. pectinata is regionally threatened and the two Gnetum species have become rare while the populations of P. nerifolia are depleted. Immediate appropriate conservation measures are needed to protect these species in the country

In the present investigation, 30 different potato genotypes were evaluated for 3 consecutive years. The estimates of different components of variation and coefficient of variability, such as phenotypic, different interaction and error were more or less high for yield, number of leaves/plant, number of tubers/plant and number of eyes/ tuber, which indicates the wide scope of improvement of these traits through selection. The highest of h2b was recorded for tuber yield and lowest in number of tubers/plant.Path coefficient analysis showed that potato genotypes could be grouped into 6 different...

Medicinal legumes are represented in Bangladesh by 107 species under 48 genera including herbs, shrubs and trees. Medicinal value of the species have been ascertained based on the field study as well as literature survey. Recorded plant species are effective as astringent, anthelmintic, antipyretic, aphrodisiac, laxative and tonic. Recent field study in Chapai Nawabgang, Bangladesh reveals that the fresh leaves extract of Senna shopera (L.)Roxb. is very effective for the treatment of asthma. Bark extract of Pueraria tuberosa (Roxb. ex Willd.) is a very appropriate drug for the remedy of...

The present study was carried out to obtain information about the performance of maize inbred lines, genetic diversity, gene action and assessment of the combining ability of parental lines and their F1s by using diallel fashion. Cob length, number of kernels/row and no. of grains/cob could be the important selection criteria in the improvement of maize lines and hybrids for higher grain yield. The average inter-cluster was always higher than the average intra-cluster distance suggesting wider genetic diversity among the inbred lines of the groups. From Wr-Vr graph it has been noticed that...