DD277835A1 - MEANS FOR INCREASING THE STRESSTOLERANCE OF CULTURAL PLANTS - Google Patents
MEANS FOR INCREASING THE STRESSTOLERANCE OF CULTURAL PLANTS Download PDFInfo
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- DD277835A1 DD277835A1 DD32304388A DD32304388A DD277835A1 DD 277835 A1 DD277835 A1 DD 277835A1 DD 32304388 A DD32304388 A DD 32304388A DD 32304388 A DD32304388 A DD 32304388A DD 277835 A1 DD277835 A1 DD 277835A1
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Abstract
Die Erfindung betrifft Mittel zur Erhoehung der Stresstoleranz von Kulturpflanzen insbesondere zur Erhoehung der Salz- und Trockentoleranz von Getreide. Als Wirkstoffe enthalten diese Mittel ein 1,3-Dimethylxanthin der allgemeinen Formel I, wobei fuer R Aminoethyl (CH2CH2NH2)-Reste, Chlorethyl (CH2CH2Cl)-Reste oder aber vorzugsweise Hydroxy (CH2CH2OH)-Reste stehen koennen. Formel IThe invention relates to compositions for increasing the stress tolerance of crop plants, in particular for increasing the salt and drought tolerance of cereals. As active ingredients, these agents contain a 1,3-dimethylxanthine of the general formula I, where R may be aminoethyl (CH 2 CH 2 NH 2) radicals, chloroethyl (CH 2 CH 2 Cl) radicals or preferably hydroxy (CH 2 CH 2 OH) radicals. Formula I
Description
Der Erfindung liegt die Aufgabe zugrunde, Mittel zur Erhöhung der Streßtoleranz von Kulturpflanzen, insbesondere zur gleichzeitigen Erhöhung der Salz- und Trockentoleranz bei Getreide zu entwickeln, die toxikologisch und umwelthygienisch unbedenklich sind und bereits bei geringer molarer Dosis eine signifikante biologische Aktivität entfalten. Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß Mitte' zur Erhöhung der Streßtoleranz von Kulturpflanzen neben üblichen Hilfs- und Trägerstoffen als Wirkstoff ein 1,3-Dimethylxanthin dor allgemeinen Formel IThe invention has for its object to develop means for increasing the stress tolerance of crops, in particular for the simultaneous increase of salt and drought tolerance in cereals that are toxicologically and environmentally safe hygienic and unfold a significant biological activity even at a low molar dose. This object is achieved in that 'middle' to increase the stress tolerance of crops in addition to conventional excipients and carriers as the active ingredient, a 1,3-dimethylxanthine dor general formula I.
Λ. _ ! ' Λ. _ ! '
(Formel I)(Formula I)
') ')
ZVZV
enthalten, in der für R Aminoethyl (-CH7-CHr-NH2)ReSIe, Chlorethyl (-CHr-CH7-CI)-Reste oder aber vorzugsweise Hydroxyl (-CHr-CHr-OH)-Reste stehen können.in which R is aminoethyl (-CH 7 -CHr-NH 2 ) ReSIe, chloroethyl (-CHr-CH 7 -CI) radicals or preferably hydroxyl (-CHr-CHr-OH) radicals may be.
Untersuchungen zum Keimlingswachstum sind in Petrischalen vorgenommen worden. Zu diesem Zweck wurde das Saatgut von Sommergerste (cv. Salome) entweder für 5 Stunden in destilliertem Wasser oder in Salzlösung die erfindungsgemäßen Mittel zugegeben. In Paralleluntersuchungcn sind Körner ohne Zusatz der erfindungsgemäßen Mittel vorgequollen worden. Im Anschluß ün die Vorquellperiode wurden die Körner auf feuchtes Filterpapier in Petrischalen ausgelegt. Die Bestimmung des Keimlingswachstums erfolgte 48 Stunden nach der Aussaat der Körner in die Petrischalen (Kultivierung bei 230C und 100% relativer Luftfeuchte in Dunkelkammer).Studies on seedling growth have been made in Petri dishes. For this purpose, the seeds of spring barley (cv Salome) were added to the compositions according to the invention either for 5 hours in distilled water or in saline. In parallel investigations grains have been pre-swollen without the addition of the agents according to the invention. Following the pre-swelling period, the kernels were placed on wet filter paper in Petri dishes. Seedling growth was determined 48 hours after sowing the seeds into the Petri dishes (culturing at 23 ° C. and 100% relative humidity in a darkroom).
Aus den Koimungsversuchon geht horvor (Tabelle 1), daß unter dan Bedingungen von Salzstreß die Anwendung der erfindungsgemäßen Mittel des Keimlingswachstums signifikant stimuliert.From the Koimungsversuchon is horvor (Table 1) that under dan conditions of salt stress significantly stimulates the application of the means of seedling growth according to the invention.
Tabelle 1: Einfluß der erfindungsgemäßen Mittel auf das Keimlingswachstum von Sommergerste (cv. Salome) bei geringem bis mäßigem SalzstreßTable 1: Influence of the agents according to the invention on the seedling growth of spring barley (cv. Salome) with low to moderate salt stress
I]R = Substituenten in Positionen V(N) dos 1,3-OimethylxAnthins gemäß Formel I 2) Sal*kon*ent(ation 0,5% NaCI t 0.15% KCII] R = substituents in positions V (N) of the 1,3-OimethylxAnthins according to formula I 2) Sal * kon * ent (cation 0.5% NaCl t 0.15% KCl
Am wirksamsten war das 1,3-Dimethyl-7-(ß-hydroxyothyl)-xanthin. Dio molare Wirksamkeit der erfindungsgemäßen Mittel lag dabei eindeutig über den Vergloichssubstarizen Monoethanolamin und CCC.The most effective was 1,3-dimethyl-7- (β-hydroxy-thyl) -xanthine. Dio molar activity of the compositions according to the invention was clearly above the Vergloichssubstarizen monoethanolamine and CCC.
Der Einfluß der erfindungsgemäßen Mittel auf den Kornertrag und den Streßindex wurde im Beispiel 2 in einem Gefäßversuch ermittelt. Die Pflanzenanzucht erfolgte in einem Sand-/Boden-Gemisch (2:1, m/m, 6,9kg Substrattrockenmasse je Mitscherlichgefäß). Je KulturgefäC sind 15 Pflanzen bei folgendem Nährstoffangebot kultiviert worden: 1,6g N, 0,5g P, 1,4g K, 0,3g Mg, 0,6g Ca, 30mg Fe und Mikronährstoffe. Der Wasserverbrauch ist täglich durch Wägung ermittelt worden und im Anschluß an jede Wägung ist der Wasserverlust (Evapotranspiration) ersetzt worden. Die Kontrollvariante wurde auf eine Sollbodenfeuchte von 60% der nutzbaren Wasserkapazität angefeuchtet. Die Streßvariante ist während der Produktbildungsphase in drei Trockenphasen von jeweils 1 Woche auf einen oberen Fsuchtesollwert von 35% nWK eingestellt worden. Zugleich wies die Bodenlösung der Kontrollvariante einen mittleren osmotischon Druck von 0,2MPa auf. Der osmotische Druck betrug bei der Streßvariante im Mittel der Produktbildungsphase 0,4 MPa.The influence of the agents according to the invention on the grain yield and the stress index was determined in Example 2 in a vial test. The plant cultivation was carried out in a sand / soil mixture (2: 1, m / m, 6.9 kg substrate dry matter per Mitscherlich vessel). 15 cultures per cultivar were cultivated with the following nutrient supply: 1.6 g N, 0.5 g P, 1.4 g K, 0.3 g Mg, 0.6 g Ca, 30 mg Fe and micronutrients. The water consumption was determined daily by weighing and following each weighing the loss of water (evapotranspiration) has been replaced. The control variant was moistened to a nominal soil moisture content of 60% of the usable water capacity. The stress variant has been adjusted during the product formation phase in three dry phases of 1 week to an upper Fuchses target value of 35% nWK. At the same time, the soil solution of the control variant had a mean osmotic pressure of 0.2 MPa. The osmotic pressure in the stress variant was 0.4 MPa on average during the product formation phase.
Die Untersuchungen in Gefäßen ergaben, daß der Kornertrag unter Streß um -7% erhöht wurde und bei gleichen Aufwendungen über der Ertragswirksamkeit der Vergleichssubstanz lag.The tests in vessels showed that the grain yield was increased under stress by -7% and at the same cost over the efficiency of the reference substance.
Der Feldversuch wurde auf einem haplic Pheozem mit sehr begrenzter Wasserbereitstellung bei 50% des langjährigen Niederschlagsangebots in der Hauptvegetation durchgeführt.The field trial was carried out on a haplic pheozem with very limited water supply at 50% of the long-term precipitation supply in the main vegetation.
Tabel'e 2: Einfluß der erfindungsgemäßen Mittel auf den Kornertrjg von Winterroggen (cv. Pluio) unter StreßbedingungenTable 2: Influence of the agents according to the invention on the grain flow of winter rye (cv. Pluio) under stress conditions
R" ~ Subslituent in Position 7 (N) des 1,3-Dimelliylxanthins gemäß Formel IR "~ Subslituent in position 7 (N) of 1,3-Dimelliylxanthins according to formula I.
Die Versuchsdurchführung erfolgte nach üblichen Methodenstandards (Parzellengröße: 20m2, Zahl der Wiederholungen je Prüfglied: 5). Die Düngung und Bestandesführung ist nach Normativen für hohe Erträge (80 GE) vorgenommen worden. Der Stroßtoleranzindcx (STI) wurde wie folgt ermittelt:The experiment was carried out according to standard method standards (plot size: 20m 2 , number of repetitions per test element: 5). Fertilization and stock management has been carried out according to norms for high yields (80 GE). The Stroftoleranzindcx (STI) was determined as follows:
Kornortrag bei Streß (Konlroll- bzw. Wirkstoffvariante) Kornertrag ohno Streß (Kontrollvarianto) Kornortrag in stress (Konlroll- or drug variant ) grain yield without stress (Kontrollvarianto)
Tabelle 3: Ein'luß der erfindungsgemäßon Mittel auf den Kornertrag und den Streßtoleranzindex (STI) von Winterweizen (cv. Arkos) unter hoher TrockenbelastungTable 3: Influence of the means according to the invention on the grain yield and the stress tolerance index (STI) of winter wheat (cv. Arkos) under high dry load
R" Substituent in Position 7 (N) des 1,3-Dimethylxanthins gemäß Formel IR "substituent in position 7 (N) of 1,3-dimethylxanthine according to formula I.
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1988
- 1988-12-13 DD DD32304388A patent/DD277835A1/en not_active IP Right Cessation
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DE102016107338A1 (en) | 2016-04-20 | 2017-10-26 | Skw Stickstoffwerke Piesteritz Gmbh | Use of imidamide derivatives as an agent for improving the dry stress tolerance |
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WO2018108627A1 (en) | 2016-12-12 | 2018-06-21 | Bayer Cropscience Aktiengesellschaft | Use of substituted indolinylmethyl sulfonamides, or the salts thereof for increasing the stress tolerance of plants |
WO2019025153A1 (en) | 2017-07-31 | 2019-02-07 | Bayer Cropscience Aktiengesellschaft | Use of substituted n-sulfonyl-n'-aryl diaminoalkanes and n-sulfonyl-n'-heteroaryl diaminoalkanes or salts thereof for increasing the stress tolerance in plants |
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