geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

A method for in situ determination of genotype root efficiency


, : A method for in situ determination of genotype root efficiency. Zeitschrift fuer Acker- und Pflanzenbau 149(5): 391-397

A method is described which enables studies on barley root growth and root efficiency under controlled conditions, i.e., soil density, soil water potential and nutrient supply. The roots can develop in soil columns (total length 120 cm) of 4 compartments in plexiglass tubes of 30 cm each. In every compartment an adjustable constant soil water potential can be maintained during the whole vegetation period by ceramic cells which are inserted in the soil of a well defined density. The cells are connected to an automized system for water supply at a given soil water potential. Effects of soil compaction, nutrient supply and salt concentration can also be examined at different root zones. The rational carrying out of a big number of treatments enables the investigation of several cultivars or genotypes. At a lower soil water potential (-0.1 bar) the main active zone of water uptake were the zones 0-30 and 30-60 cm.

US$29.90


Other references

Parrott, R., 2016: Communicating about family health history: heredity, culture, iatrogenesis and the public good. Journal of Epidemiology and Community Health 69(1): 3-5

Gerez, C.L.; Torino, M.I.; Obregozo, M.D.; Font de Valdez, G., 2010: A ready-to-use antifungal starter culture improves the shelf life of packaged bread. Fungal spoilage is the main cause of economic loss in the baking industry. In this study, we developed a ready-to-use biopreserver (slurry [SL]) for nonsliced packed bread by using selected antifungal lactic acid bacteria (LAB) and low-cost ingred...

Burcham, M.R., 1998: Staffing solutions. New staffing models are essential in today's changing health care environment. Rehab Management 11(3): 54-59

Kaneda, K.; Shirai, Y.; Miyamoto, M., 2001: An epidemiological study on occupational low back pain among people who work in construction. People who work at construction sites have one of the highest incidences of low back pain (LBP). The purpose of this study is to evaluate the status of LBP, and to investigate the risk factors of LBP in construction workers. The subjects were 33,...

Whittaker, C.A.; Bergeron, K-Frederik.; Whittle, J.; Brandhorst, B.P.; Burke, R.D.; Hynes, R.O., 2006: The echinoderm adhesome. Although the development of sea urchin embryos has been studied extensively and clearly involves both cell adhesion and cell migration, rather little is known about the adhesion receptors and extracellular matrix molecules involved. The completio...

Lorenzoni, C.; Maggiore, T., 1978: Cultivation techniques for the production of grain maize. In this review, cultivation techniques are discussed under the following headings: land preparation, insect control, sowing date and density, fertilizers, surface cultivation and weed control, irrigation and choice of hybrids.

Cruciani-Guglielmacci, C.; Migrenne, S.; Clément, L.; Magnan, C., 2006: Fatty acid sensors and neurologic control of energetic homeostasis. Journees Annuelles de Diabetologie de L'hotel-Dieu: 13-23

Garnica, J.; Achata, R.; Bravo, P.W., 1993: Physical and biochemical characteristics of alpaca semen. Semen was collected from ten intact male alpacas (five were adults and five were 3 years old) using an artificial vagina. Liquefaction of the viscous semen occurred within 24 h, after which samples were centrifuged at 3000 rev min-1 for 20 min bef...

Pholpramool C.; Tangkrisanavinont V., 1983: Evidence for the requirement of sympathetic activity in prostaglandin e 1 induced lacrimal secretion in rabbits. The effect of prostaglandin E1 (PGE1) administered either intraarterially or i.v. on basal fluid secretion from the lacrimal gland after various treatments was studied in anesthetized rabbits. Intraarterial administration of either propranolol (1...

Zupko K.G.; Smith D.M.; Powers R.D., 1980: The effect of neuro transmitters on germinal vesicle breakdown in the mouse oocyte. Journal of Cell Biology 87(2 PART 2): 151A