Description: Das Projekt "D 1.3: Regulation of flowering in tropical fruit crops on erosion prone sites in Northern Thailand" wird vom Umweltbundesamt gefördert und von Universität Hohenheim, Institut für Kulturpflanzenwissenschaften, Fachgebiet Ertragsphysiologie der Sonderkulturen (340f) durchgeführt. NRCT component: Assoc.Prof.Dr. Sruamsiri, Pittaya - Development of Clean Technology for Off-season Fruit Production: A Case Study of Mango, Longan, Litchi and Tangerine. Specific basic and applied science activities for each crop will be carried out in an attempt to solve the following issues. Longan: Previous research work has shown that flower induction can successfully be manipulated by application of KClO3. This crop is therefore an ideal model plant to investigate the regulatory mechanisms of flowering by: 1. determining acquisition and distribution of KClO3 using isotope labelling techniques and measuring enzyme activities in leaves to decide whether nitrate reductase is involved in the conversion and flower inducing activity of KClO3; 2. identifying mutual influences between hormones including their time-dependent changes brought about by manipulation of hormone biosynthesis through exogenously applied plant growth regulators (PGRs); 3. investigating the effect of off-season production systems on carbohydrate distribution and reserves. Mango: Paclobutrazol (PBZ) is already commercially used to manipulated flower induction in mango, however, the technique may not be sustainable due to its persistence in plant and soil. Prohexadione-Ca (Pro-Ca), another gibberellin biosynthesis inhibiting compound, and specific crop management techniques may prove to be successful and more sustainable alternatives to PBZ and warrant detailed investigation by: 1. evaluating appropriate time-of-season, concentration and application procedure (injection or spray) of Pro-Ca as possible alternative of PBZ and subsequent effects on hormonal status; 2. pruning or defoliation techniques which may induce a secondary flower through an altered hormonal status in the bud tissue. Litchi: There are still no proven orchard management practices for inducing off-season flowering in litchi. The main research objective is to study the significance of plant stress (pruning, girdling shoot tipping techniques, water and nutrient deficiency) on flowering signals by determining carbohydrate changes and hormonal status.
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Wachstumsregulator ? Entlaubung ? Getreide ? Obstbau ? Zierpflanze ? Obstwiese ? Endokrine Wirkung ? Thailand ? Kohlenhydrat ? Kronenverlichtung ? Nitratreduktase ? Erosion ? Main ? Messtechnik ? Blüte ? Stress ? Enzym ? Laubblatt ? Beschaffung ? Management ? Angewandte Wissenschaft ? Nährstoffmangel ? Fallstudie ? Frucht ? Standortwahl ? Studie ? Technik ? Tropengebiet ? Organisches Gewebe ? Hormon ? Isotop ? Wasser ? Jahreszeit ? Effektkonzentration ? Biosynthese ? Umweltfreundliche Technologie ? Arbeit ? Persistenz ? Schutzgebiet ? Forschung ? Nachhaltige Bewirtschaftung ? Cleaner Production ? Produktion ? BESCHNEIDEN ? Verwertung ? Zeitverlauf ? Zerstäubung ? BESTANDTEIL ? ENTWICKLUNG ? Ermächtigung ? GELOEST ? HORMONELL ? KENNZEICHNUNG ? ANGEWANDT ? Laub ? MECHANISMEN ? Muskelarbeit ? NACHHALTIG ? NOERDLICH ? SPEZIFISCH ? UNTERSUCHUNG ? VERBINDUNG ? VERTEILUNG ?
Region: Baden-Württemberg
Bounding box: 9° .. 9° x 48.5° .. 48.5°
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 2006-01-01 - 2009-12-31
Webseite zum Förderprojekt
https://sfb564.uni-hohenheim.de/ (Webseite)Accessed 1 times.