DIURNAL CHANGES IN LEAF PHOTOSYNTHESIS AND RELATIVE WATER CONTENT OF GRAPEVINE

Journal Title: Current Trends in Natural Sciences - Year 2014, Vol 3, Issue 6

Abstract

Variation in light intensity, air temperature and relative air humidity leads to diurnal variations of photosynthetic rate and leaf relative water content. In order to determine the diurnal changes in net photosynthetic rate of vine plants and influence of the main environmental factors, gas exchange in the vine leaves were measure using a portable plant CO2 analysis package. The results show that diurnal changes in photosynthetic rate could be interpreted as single-peak curve, with a maximum at noon (10.794 µmol CO2 m-2 s-1). Leaf relative water content has maximum value in the morning; the values may slightly decrease during the day (day of June, with normal temperature, no rain, no water restriction in soil).

Authors and Affiliations

Monica Popescu, Gheorghe Cristian Popescu

Keywords

Related Articles

ORIGINS AND EVOLUTION PROCESS OF ECOLOGICAL AGRICULTURE

The aim of this paper is to emphasize origins and development process of organic agriculture by summarizing the studies published to combat phytopathogenic agents which uses different plant extracts and essential oils....

OBSERVATION ON THE STRUCTURE, DYNAMICS AND ABUNDANCE OF SPECIES OF BEETLES ( INSECTA- COLEOPTERA) OF THE WHEAT CROP

The collection of the material was made in 2014, from April to June, to the following data: 29.04, 07.05, 29.05, 13.06 and 27.06. For the collection were used the soil traps type Barber which was placed with a solution...

AGRICULTURAL USES OF SEAWEEDS EXTRACTS

Marine bioactive substances extracted from seaweed are currently used in food, animal feed, as a raw material in the industry and have therapeutic applications. Most of the products based on marine algae are extracted f...

STATUS OF PUMPKIN SEED PRODUCTION IN TURKEY

Pumpkin seed contains very valuable nutrients and may have some beneficial health effects. The aim of this study was to overview status of pumpkin seed production in Turkey. The production has sharply risen from 11.500...

THE IMPACT OF THE ANTHROPIC FACTORS ON DISRUPTING AND DESTABILIZING THE ECOLOGICAL BALANCE OF THE VÂLSAN RIVER

The Vâlsan river is the only ecosystem in Romania and in the world where Romanichthys valsanicola, a Tertiary era relict, lives; this fish has a strictly limited habitat range and is on the Red List of U.I.C.N – under r...

Download PDF file
  • EP ID EP25007
  • DOI -
  • Views 217
  • Downloads 14

How To Cite

Monica Popescu, Gheorghe Cristian Popescu (2014). DIURNAL CHANGES IN LEAF PHOTOSYNTHESIS AND RELATIVE WATER CONTENT OF GRAPEVINE. Current Trends in Natural Sciences, 3(6), -. https://europub.co.uk/articles/-A-25007