DSpace Collection:http://ir.lib.seu.ac.lk/handle/123456789/51692024-03-20T20:03:26Z2024-03-20T20:03:26ZCharacterization of morphometric, physiological and biomass production in local maize (Zea mays L.) landraces of Sri LankaMufeeth, M.Mubarak, A. N. MRanaweera, GKMMANusrathali, N.Roshana, MR.Rifna Banu, ARFKumara, ADNThttp://ir.lib.seu.ac.lk/handle/123456789/51772021-10-18T19:39:23Z2020-12-31T00:00:00ZTitle: Characterization of morphometric, physiological and biomass production in local maize (Zea mays L.) landraces of Sri Lanka
Authors: Mufeeth, M.; Mubarak, A. N. M; Ranaweera, GKMMA; Nusrathali, N.; Roshana, MR.; Rifna Banu, ARF; Kumara, ADNT
Abstract: A field trial was conducted with the aim of identifying
maize germplasms which confer increased productivity along with
resistance against fall armyworm Spodoptera frugiperda (Smith)
infestation. Seventeen local maize landraces were collected from
Ampara, Moneragala and Badulla districts and denoted as South
Eastern University of Sri Lanka (SEU) collections. These were
subsequently planted at Agrotech Park, Malwatta (DL2b) in yala
2020, and the responses were compared with Pacific-999. The
results revealed that several landraces naturally possessed improved
morphological, physiological, and yield traits. Early flowering was
found in SEU1 compared to variety Pacific-999. Similarly, SEU14
showed improved cob dry weight (112.34 ± 22.13g) and the highest
number of kernels per row (33.60 ± 2.63) while, SEU9 recorded
significantly higher LAI (1.79 ± 0.30) at the tasseling stage. The
natural resistivity against fall armyworm was found to be higher
in SEU14, SEU15, and SEU16. Cluster analysis revealed that three
distinct groups of landraces were found while Pacific-999 stands on
its own. The novel traits found in this germplasm could be further
confirmed through detailed photosynthetic and biomass trials with
molecular marker-assisted selection. Once the traits are reaffirmed,
they could be introgressed through maize plant breeding programs.2020-12-31T00:00:00ZThe meat consumption pattern and gender differences; a Sri Lankan urban public approachJemziya, M. B. FathimaSivarajah, P.http://ir.lib.seu.ac.lk/handle/123456789/51762021-10-18T19:39:20Z2020-12-31T00:00:00ZTitle: The meat consumption pattern and gender differences; a Sri Lankan urban public approach
Authors: Jemziya, M. B. Fathima; Sivarajah, P.
Abstract: The present study was designed to evaluate the genderbased differences in meat consumption patterns, preferences and
concerns. In order to do approach this study, 385 respondents were
randomly selected, interviewed using semi-structured questionnaires
and statistically interpreted. According to the findings of this study
it was reported that women consume conventional meat more while
the men are addicted to consume processed meat products more than
women did. The men prefer red meat; beef and mutton, on the other
hand, women prefer chicken based products. The frequency of meat
consumption on daily basis was higher among men compared to
women. The male population targeted the processed meat products
due to the convenience, delicacy, and no any other choices in
the food outlets. In contrasts, hectic scheduled life and storability
were considered to make the women depend on the processed meat
products. The men concerned about the meat products regards on
high fat and difficult to digest and the women were due to excessive
salt, sugar and harmful substances. However, both were aware of
harmful chemical additives and high calories. Eventually, the meat
consumption patterns were significantly (p < 0.05) influenced by
gender differences due to their lifestyles, social behaviors, economic
status and educational level.2020-12-31T00:00:00ZNitrogen fertiliser on plant nitrogen uptake and partitioning in different wheat speciesKurukulasuriya, M. C. FernandoDebbile, L. Sparkeshttp://ir.lib.seu.ac.lk/handle/123456789/51752021-10-18T19:41:42Z2020-12-31T00:00:00ZTitle: Nitrogen fertiliser on plant nitrogen uptake and partitioning in different wheat species
Authors: Kurukulasuriya, M. C. Fernando; Debbile, L. Sparkes
Abstract: Nitrogen (N) partitioning in different wheat species
under three N levels was studied by conducting two field experiments
in 2012-2013 and 2013-2014 seasons at University of Nottingham
farm, Sutton Bonington, UK. Ten geno types belonging to four
wheat species including three ancient hull wheat species of cultivated
Einkorn (Triticum monococcum L.), cultivated Emmer (T. dicoccum)
and Spelt (T. spelta L.), and modern bread wheat (T. aestivum) were
compared under three N levels (0, 100 and 200 kgN ha-1 in 2013 and
0, 100 and 150 kgN ha-1 in 2014). The interaction effect of genotype
by fertiliser level was significant for straw, chaff and grain N% in
both experiments (P < 0.001). N% of all plant organs were increased
significantly when increased N supply (P < 0.001). The total plant
N uptake (excluding root N) was greater in emmer under high N
fertiliser level while spelt had the highest total plant N uptake at low
and zero N fertiliser applications in both experiments. The total plant
N uptake was significantly different between N levels (P < 0.001 in
2013 and P < 0.001 in 2014) and genotype (P < 0.001 in 2013 and
P < 0.05 in 2014). The highest amount of N in straw and chaff was
recorded in spelt genotypes.The amount of N in grains was high in
emmer in 2013 though bread wheat recorded the highest chaff and
grain N content in 2014 under the high level of N fertiliser. According
to the results, it can be concluded that ancient wheat species of
emmer and spelt could uptake more N than modern bread wheat
and accelerated by N supply. Furthermore, the greater total plant N
uptake of ancient wheat species may be associated with the height of
the plant, since all ancient wheat species are significantly taller than
modern bread wheat. Therefore, more N was partitioned to structural
materials development of the stem hence stored more N in the straw
at maturity.2020-12-31T00:00:00ZAssessment of climate extremes based on SPI in WL1 agroecological zone - a case study from Kuruwita, Sri LankaRasmiya Begum, S. L.Najim, M. M. M.http://ir.lib.seu.ac.lk/handle/123456789/51722021-10-18T19:39:30Z2020-12-31T00:00:00ZTitle: Assessment of climate extremes based on SPI in WL1 agroecological zone - a case study from Kuruwita, Sri Lanka
Authors: Rasmiya Begum, S. L.; Najim, M. M. M.
Abstract: —Drought and flood are the simple most significant
climatological hazards in Sri Lanka, which primarily affects agricultural productivity. Proper understanding and investigation of climatic
extremes like drought and floods play a key role in planning
and management of the household, municipal, agricultural and industrial
activities even with varied water availability. Therefore, the present
the study aimed to assess onset, severity, and occurrence of drought and
wet episodes (months) in Kuruwita region, which belongs to the Low
Country Wet Zone Agro-ecological region using the Standardized
Precipitation Index (SPI) at various time scales. SPI analyzed at 12
months’ time interval revealed that out of 45 years of the study period
(1961-2005), there were only four (1976, 1980-1981 and 1996) and
six (1985-1986, 1988-1989, 2003-2004) drought and wet hydrological
years, respectively. Further, the hydrological years 1981 and 2004
were identified as more affected years by drought and wet events,
respectively, with a relatively higher occurrence of climate extremes
depicted by SPI, than normal conditions. The South-West monsoon
(SWM) was found to be more prone to extreme climatic conditions,
leading the Yala cropping season to become more abnormal with
the occurrence of more drought and wet months in Kuruwita. Therefore,
the study suggests that the implementation of proper mitigative measures
like installation of rainwater harvesting systems, reuse or recycling
of rainwater, cultivation of stress-tolerant crop varieties, adaption
of different cropping systems would be beneficial to minimize such
adverse effects and for sustainable development in Kuruwita area.2020-12-31T00:00:00Z