Journal of Agricultural Sciences
http://repo.lib.sab.ac.lk:8080/xmlui/handle/123456789/563
Journal Published by the Faculty of Agricultural Sciences, Sabaragamuwa University of Sri Lanka2024-03-29T09:53:31ZGrowth and Ethanol Yield Responses of Sweet Sorghum /Sorghum bicolor (L.) Moenchi Varieties to Nitrogen Fertilizer Rates
http://repo.lib.sab.ac.lk:8080/xmlui/handle/123456789/1232
Growth and Ethanol Yield Responses of Sweet Sorghum /Sorghum bicolor (L.) Moenchi Varieties to Nitrogen Fertilizer Rates
Olugbemir, O; AboyeJl, C. M; Olofintoye, J. A.T; Meek, E. K
Purpose: Soils of the experimental area are low in vital nutrients such as nitrogen. Fallow is no longer possible because of increasing pressure on arable land. The limited available chemical fertilizers must be inevitably and judiciously used for optimum yield The study was carried out to assess the response of sweet sorghum varieties to varying nitrogen fertilizer (N) rates. Research Method : Sweet sorghum varieties (NTJ-2, 64 DTN, SW Makeaft 2006 and SW Dansadau 2007) were alloted to the main plots and nitrogen fertilizer (0. 40.80. 120 and 160 kg N her') to the sub-plots of a split-plot design, in three replicates. Data on growth and yield characteristics were collected and analysed. Findings: Variations were observed among the four varieties ofsweet sorghum; SW Dansadau 2007 had greater growth and yield characteristics. N fertilizer had positive effects on the growth characteristics and ethanol yield of the crop. 80 kg N ha.' resulted in increase of most parameters and ethanol yield. beyond which there was either no sign ftcant difference or a drop in the values of these parameters. Thus the use of 80 kg N ha" would result in optimum yield of sweet sorghum in the study area. Limitations : The requirement of 80 kg N ha" may not be generalized for the entire southern guinea savanna agraecologiced of Nigeria as the study was carried out only in one location. Originality/Value : These findings would assist farmers in the study area identify the most promising sweet sorghum variety and the optimum fertilizer rate for its production.
2018-01-01T00:00:00ZSelection of Differentially Expressed Genes Using the Transcriptome Analysis of Ripening Grape Berries in Response to High Temperature '
http://repo.lib.sab.ac.lk:8080/xmlui/handle/123456789/1231
Selection of Differentially Expressed Genes Using the Transcriptome Analysis of Ripening Grape Berries in Response to High Temperature '
Kim, Seon Ae; Ahn, Soon Young; Yun, Hee Kenn
Purpose: The transcriptome of 'Campbell Early 'grape berries exposed to high temperature was analyzed to select useful genes by evaluating their differential expression through sequencing short reads. on Solera platform. Research Method : ;Yeassembled 118 million high-quality trimmed reads using Velvet followed by Oases. Findings : Functional categorization of expressed transcripts revealed the conservation of genes involved in various biological processes like responses to chemical (12.7%), responses to abiotic stimulus (11.8%), biosynthesis processes (11.8%), and cellular metabolic processes (10.4%) in grape berries exposed to high temperature. The major up-regulated genes included isteitratelyase, cpteine proteinases superfamily protein, cupin family protein, and glycosyl hydrolase genes, and the major down-regulated genes included jlavanone 3-hydroxylase, phenylalanine ammonia lyase, chlorophyll A-B binding family protein, and polnalacturonase inhibiting protein genes in grape berries exposed to high temperature. Among genes related to grape coloration, expressions of chalcone and stilbene owthase, flaw:none 3.hydrenylase, leucoanthocyanidin dioxygenase, phenylalanine ammonia lyasegenes were more strongly inhibited in berries kept at 35°C than 25°C. OriginalloWalue : ThanscrIpt sets of grape berries generated in this study will provide a resource for gene discovery and development of functional molecular markers to be used in elucidating the mechanism of tolerance to high temperature.
2018-01-01T00:00:00ZEffect of Heat Stress on phenological traits wheat genotype
http://repo.lib.sab.ac.lk:8080/xmlui/handle/123456789/1230
Effect of Heat Stress on phenological traits wheat genotype
Bala, P; Sikdcr, S
Purpose : This study was conducted at Crop Physiology and Ecology Department. Hafer Mohammad Danesh Science and Technology Unimak): Dinajpur to identify, phenologn growing degree days, phenothermal index and heat use efficiency of wheat genotypes in response to heat stress. Research Method: Eight wheat genotypes viz.. Pawn-76. Prodip. BA R1 Crom-25. BA 11.1 Gom-26. BA1Y-1143. BAW-1146. BAN'-1147 and BAW-118 were used and seeding them at November 27 (normal), December 17 Rate) and January 7 (very late growing condition) over two successive years of 2011-12 and 2012-13. The experiment was laid out in a split plot design and main plot treatments were sowing time and sub plot design was wheat genotypes. Findings : The number of days for attaining different phenological stages. the requirement of heat unit (GOD). phenothermal index (PM and heat use efficiency (HUE) was higher for normal growing condition compared to late and very late growing condition and higher In heat tolerant genotypes than the heat sensitive genotypes in each sowings of every year The heat tolerant (HT) genotype BAW-1143 needed highest number of days whereas. HS genotype Pavan-76 required the lowest number of days for attaining all the phenological stages .Under normal growing condition. HT genotype VW -1143 had the significantly highest HUE (2.22 and 2.37 for first and second year• respectively). But HS genotype Pavan-76 had the lowest HUE (1.7! and 2.16 forfrst and second year. respectively). Limitations : The limitations of the research are apparent to the fact that it was done in a single location. Orkinalityablue : This research helps the researcher to identiffi heat tolerance genotypes for further investigation.
2018-01-01T00:00:00ZMorphological Characterization and Assessment of Selected Biochemical Properties of Sofanum insanum L.: Screening of Local Plant Genetic Resources for Crop Improvement
http://repo.lib.sab.ac.lk:8080/xmlui/handle/123456789/1228
Morphological Characterization and Assessment of Selected Biochemical Properties of Sofanum insanum L.: Screening of Local Plant Genetic Resources for Crop Improvement
Samarakoon, S.M.P.H; Rant, R.H.G; Fonseka, R.M; SIvarnanthan, T; Foniekal, II; Senarathne, S.M.A.C; Saranande, K.H; Niran, H.M.L
Purpose Solanum insanum L. is remaining as an underutilized crop due to little evidence from scientific studies on its medicinal and nutritional values. Lack of such basic information on the plant obscured the in-depth biochemical or molecular studies as wen as its uses in plant breeding. The study was aimed to identify the morphological variations of S. insanum and its selected biochemical properties. Research Method: Characterization of 71 accessions collected from different agro-ecological regions was carried out following the descriptor developed by the IBPGR and antioxidant activity, total phenolic content and browning of thefruits were also measured at the level of 5% probability. Findings : The results revealed that there were two distinct groups of S. insanum accessions, mainly based on prickliness of the plants. Non prickly plants showd 20.30 t 0.52% radical scavenging activity• (DPPH). 51.98 10.16 mg/100 g fruit weigh (F09 of total phenolic content while prickly plants with 7.10 *0.59% radical scavenging activity (DPPH)and 50.62 *0,09 mg /100g Fl V of total phenolic content in their fruits at the edible maturiry• In terms of browning, time taken for color development up to "Grayed orange group 165 V was 380 * 10 seconds in fruits of non-prickly plants while 450 1 17.32 seconds forfruits of prickly plants. Research limitations : Due to the out-crossing nature of the plant, it is difficult to find typical S. insanum plant either from wild or cultivated lands. OriginaliolValue : Characterization and evaluation of different accessions of S insanum via morphological characteristics is a printe need before carrying out comprehensive biochemical or molecular studies. It provides fundamental basis for the classification based on vegetative, inflorescence and fruiting characteristics. Accordingly, the results will provide baseline information on S. insanum paving my to select superior genttplasm for the taxonomists, breeders and those who are engaged in studies on S. insanum.
2018-01-01T00:00:00Z