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Growth, Stem Quality and age-age Correlations in a Teak Provenance Trial in Tanzania

Abstract

This study examines the growth and stem straightness variation between teak (Tectona grandis L. f.) provenances in a 30-year-old field trial in the coastal lowland of Tanzania. The results are compared with earlier results. The findings demonstrate that it is possible to find large height and yield differences between teak provenances. The best performing provenance grows some 10% (height) to 40% (volume) better than the average. The provenance Topslip, India, consistently proved to be outstanding in terms of growth and stem quality confirming earlier evaluations at age 5 and 17 years. Tanzanian land races also proved to be superior, especially as regards stem straightness.

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Phenology and Control Pollination Studies in Casuarina equisetifolia Forst

Abstract

Studies on phenology, floral biology and seed production were conducted in two provenance trials and a clonal hedge orchard of C. equisetifolia. Observations in seventeen populations indicate that predominant dioecy with low proportion of monoecy as the commonest sexual strategy. Flowering occurs twice in a year coinciding with the South West and North East monsoons. C. equisetifolia exhibits strong anemophilous adaptations such as very high pollen output, reduced flowers with large stigmatic area and light weighing winged fruits. Pollen is viable up to 99%, storable in 4°C up to three months with no loss in fertility. Trees start reproducing within two years of planting. Local land races produce ten to twenty times higher seeds than the recent introduced natural provenances and exotic landraces. Controlled pollination resulted in lower seed set than observed in open pollination. Selfing leads to normal seed set in monoecious trees. Inter specific cross with C. junguhuhniana pollen parent results in viable progeny.

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Overview of in vitro Preservation of Potato and Use of the Gene Bank Material in Estonia

At EVIKA, we have been preserving potato varieties, breeding lines and land-races in vitro as meristem plants for more than 30 years. Various experiments have been conducted to determine the effects of medium components, growth conditions and other factors on regeneration and the sub-culturing interval of in vitro plants. Based on these experiments, the optimal preservation medium and long-term preservation conditions in vitro for many varieties have been developed. Every 3.0-3.5 months, the potato plants regenerated from meristems are transferred onto growth-regulator-free propagation medium. At present, there are 454 potato varieties, breeding materials, land-races and 1026 meristem clones in our gene bank. The interest in varieties as genetic resources and in those with coloured flesh tubers is increasing. In EVIKA’s test field we have been testing meristem clones of variety ‘Blue Congo’. We have demonstrated the use of that variety for making salads; baked, boiled, mashed potato and even for French fries. In addition, the use of the genetic resources was started in a farm, where. 2000 kg seed tubers were produced from 4580 meristem plants of variety ‘Väike verev’ in 2012. The main interests are: dark yellow flesh, content of antioxidants and use as a source for functional diet.

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Effects of the Performance Level and Race Distance on Pacing in Ultra-Triathlons

swimming, 1800 km of cycling and 422 km of running ( Knechtle et al., 2011 ; Lepers et al., 2011 ). An athlete who competes in a race of such a length should know the significance of each discipline (swimming, cycling or running) in order to best strategize his/her pacing. In endurance and ultra-endurance races, pacing is crucial for a successful finish ( Abbiss and Laursen, 2008 ; Foster et al., 1993 , 2005 ). Pacing can be defined as the strategy by which effort is managed throughout an exercise session in relation to a specific goal and with the knowledge of the

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CropSyst model for wheat under deficit irrigation using sprinkler and drip irrigation in sandy soil

Journal of Agronomy. No. 21. Iss. 2 p. 223–237. D encic S., K astori R., K obiljski B., D uggan B. 2000. Evaporation of’ grain yield and its components in wheat cultivars and land races under near optimal and drought conditions. Euphytica. No. 1 p. 43–52. E l -K holy M.A., O uda S.A., G aballah M.S., H ozayn M. 2005. Predicting the interaction between the effect of anti-transpirant and weather on productivity of wheat plant grown under water stress. Journal of Agronomy. No. 4 p. 75–82. E nglish M., M usick J.T., M urty V.V.N. 1990. Deficit

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Muslim Women and Interracial Intimacies

References Available from: <Opgaver.com>. Available from: <Studienet.dk>. Available from: <Studieportalen.dk>. Available from: <Dst.dk (Statistics Denmark)> Ahmed, S. 2004, The cultural politics of emotion, Edinburgh University Press, Edinburgh. Andersen, LE 1975/1998, Fremmed, Gyldendal, Gylling. Andreassen, R 2007, Der er et yndigt land. Medier, minoriteter og danskhed, Tiderne Skifter, Copenhagen. Andreassen, R 2012

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CropSyst model for wheat irrigation water management with fresh and poor quality water

’ grain yield and its components in wheat cultivars and land races under near optimal and drought conditions. Euphytica. Vol. 1 p. 43–52. D udley R.G., S heil D., C olfer C. 2008. Simulating oil palm expansion requires credible approaches that address real issues [online]. Ecology and Society 13 (1). [Access 23.09.2015]. Available at: http://www.ecologyandsociety.org/vol13/iss1/resp1/ E l -H endawy S.E., H ua Y., Y akout G.M., A wad A.M., H afiz S.E., S chmidhalter U. 2005. Evaluating salt tolerance of wheat genotypes using multiple parameters

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Evaluation of Physiological Traits, Yield and Yield Components at Two Growth Stages in 10 Durum Wheat Lines Grown under Rainfed Conditions in Southern Syria

.P., 2012 - Physiological traits for improving heat tolerance in wheat. Plant Physiol., 160: 1710-1718. Datta J.K., Mondal T., Banerjee A., Mondal N.K., 2011 - Assessment of drought tolerance of selected wheat cultivars under laboratory condition. Journal of Agricultural Technology 7: 383-393. Dencic S., Kastori R., Kobiljski B., Duggan B., 2000 - Evaporation of grain yield and its components in wheat cultivars and land races under near optimal and drought conditions. Euphytica 1: 43-52. Deshmukh P.S., Sairam R.K., Shukla D

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Isoenzyme variation and genetic affinities among four species of the genus Festuca L. (Poaceae)

polyphenolic compounds. Fitologija 35: 3-12. Angelov G. & Kozuharov S. 1997. An electrophoretic study of F. dalmatica (Hack.) K. Richt. and F. stojanovii (Acht.) Koz. Phytol. Balc. 3: 71-77. Bayer R. 1988. Patterns of isoenzyme variation in Western North American Antennaria (Asteraceae: Inuleae). I. Sexual species of section Dioicae. Syst. Bot. 13: 525-537. Brown A. & Munday J. 1982. Population genetic structure and optimal sampling of land races of barley form Iran. Genetica 58: 85-96. Camm erts D

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Root-Knot Nematode (Meloidogyne javanica ) – Deficit Irrigation Interactions on Eggplant Cropped under Open Field Conditions

REFERENCES Abu-Gharbieh W.I., Karajeh M.R., Masoud S.H. 2005. Current distribution of the root-knot nematodes ( Meloidogyne species and races) in Jordan. Jordan Journal of Agricultural Sciences 1(1): 43-48. Barker K.R., Carter C.C., Sasser J.N. 1985. An advanced treatise on Meloidogyne . Vol. II: Methodology. North Carolina State University Graphics, Raleigh, NC, USA, 223 p. Duncan L.W., Inserra R.N., Dunn D. 1998. Seasonal changes in citrus fibrous root starch concentration and body length of female Pratylenchus coffeae . Nematropica 28

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