Horváth, Imre

Szász, Kálmán

English

Horváth Imre

Szász Kálmán

University of Szeged

35 E F F E C T O F T H E S P E C T R A L C O M P O S I T I O N O F L I G H T O N T H E C A R B O H Y D R A T E P R O D U C T I O N O F T H E R E D P E P P E R P L A N T S ( C A P S I C U M A N N U U M L . ) I . H O R V Á T H a n d K . SZÁSZ Botanical Institute of the József Att i la University, Szeged (Received Jul i 1966) Red pepper plants had been grown till harvesting in our small phytotron set out with luminescent lamps ensuring different spectral composition by using an equal light intensity for each variant of 7000 erg/cm2 sec (400-700 nm). Water soluble carbohydrates were fractioncd from the dry material by making use of our o w n me t hod , a n d starch w i t h perchloric ac id one (PUCHER et a l . 1948) . T h e quantity of both fractions were measured by phcnol-sulfuric acid method (DUBOIS et a l . 1 9 5 6 ) . The data registered (calculated in mg for a single plant) arc shown in the table below: Variant root stem leaf harvest I 2 1 2 1 2 1 2 „blue" 20,52 19,84 12,73 8,29 7,23 6,03 5,97 2,30 „green" 00,55 0,64 0,90 1,13 1,64 1,51 — — „yel low" 3,26 2,38 4,00 3,40 4,18 4,18 — — „red" 12,32 8,06 0,91 7,34 4,80 4,10 6,16 2,05 „white" 21,66 11,02 7,72 7,15 4,51 4,61 4,22 2,11 Variant whole plant 1 2 „blue" 46,45 36,46 „green" 3,09 3,28 „yel low" 11,44 9,96 „red" 32,19 21,55 „whi te" 38,11 24,f9 1 = solublc carbohydrates 2 = starch 3 * 36 THE C A R B O H Y D R A T E P R O D U C T I O N It may be laid down as a iact, that the spectral composition of light shifted towards the blue and red wave lengths resulted for all organs in a high carbo-hydrate and starch production, whereas under the one sifted towards the green and the ye l low this p roduc t i on showed to be l ow . Stressing the blue wave length range, as compared to the white which is the nearest to the natural light com-position increased the carbohydrate production of the plants. Relaying upon our findings it may be considered as a fact that at the energy level amploied there is a linear relationship between stressing the wave length ranges being absorbed by the photosynthetical pigment complex to the highest degree on the one hand and the carbohydrate production on the other. In similar connection, there are available any references relating also to the interaction between light absorption by photosynthetical pigment complex and the Hill-reaction (CHEN 1952), the action spectrum of the photophosphorylation respec-tively (JAGENDORF ct al. 1958), the intensity of the assimilation (NEUERNBERGK 1 9 6 1 ) , a n d t h e O . , p r o d u c t i o n o f C h l o r e l l a ( L U N D E G A R D H 1 9 6 4 ) . References D U B O I S , M . — G I L L E S , K . A . — H A M I L T O N , J . K . — R E B E R S , P . A . — S M I T H , F . ( 1 9 5 6 ) : C o l o r i m e t r i c method for determination of sugars and related substances. — Anal. Chem. 28. 350—356. CHEN, S. L. (1952): The action spectrum for the photochemical evolution of oxygen by isolated chloroplasts. — Plant Physiol. 27. 35—48. J A G E N D O R P , A . T . — H E N D R I C K S , S. B . — A V R O N , H . — E V A N S , M . B . ( 1 9 5 8 ) : T h e a c t i o n s p e c t r u m for photosynthetic phosphorylation by spinach chloroplasts. — Plant Physiol. 33. 72—73. LUNDEGARDH, H (1964): Non-activity of citochrome oxidase in the photosynthesis. — Phvsiol P l a n t . 17. 3 7 9 — 3 8 3 . NUERNBERCK, E. L. (1961): Kunstlicht und Pflanzenkultur. — BLV Vcrlagsges., München Wien. PUCHER. W. G.—LEAVENWORTH, C . S.—VICKERY, H . S. (1948): — Anal. Chem. , 20. 85C— 857. 

Effect of the spectral composition of light on the carbohydrate production of the red pepper plants (Capsicum annuum L.)

http://acta.bibl.u-szeged.hu/21633/1/biologica_012_fasc_001_002_035-036.pdf

Effect of the spectral composition of light on the carbohydrate production of the red pepper plants (Capsicum annuum L.)

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