Premium
Daily Fluctuations of Some Metabolic Characters of Durum Wheat under Field Conditions
Author(s) -
Di Marco G.,
GiovannozziSermanni G.,
Grego S.,
Veri G.,
Pietrosanti T.,
Tricoli D.,
Catarcione M.,
Di Pietro A.
Publication year - 1976
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1976.0011183x001600030007x
Subject(s) - biology , phosphoenolpyruvate carboxylase , poaceae , agronomy , botany , photosynthesis
Physiological and biochemical parameters have been studied simultaneously with micrometeorological characters of a crop of durum wheat ( Triticum durum ). Micrometeorological measurements and plant analysis on flag leaves before spike appearance were done during 2 days in May 1973 to ascertain the fluctuation of chosen leaf parameters in comparison with the micrometeorological ones. The results indicate that biochemical and physiological changes occur during the day and night and that stomatal opening is the main factor dependent on climatic conditions. Specific leaf weight (SLW) seems to vary with the level of free amino acids. Ribulose diphosphate carboxylase (RuDPcase) showed daily fluctuations insensitive to climatic conditions, whereas phosphoenolpyruvate carboxylase (PEPcase) exhibited little day change.