The Journal "Agriculture and Forestry"
Časopis "Poljoprivreda i šumarstvo"
- Since 1955 -
Volume 69, Issue 2 (30.06.2023)
| Volume : | 69 |
| Issue : | 2 (30.06.2023) |
| Authors : | Florin SALA, Mihai Valentin HERBEI |
| Title : | INTERDEPENDENCE RELATIONSHIPS BETWEEN THE PRODUCTIVITY ELEMENTS IN WHEAT EAR AND THE PHOTOSYNTHETIC PIGMENTS IN LEAVES IN RELATION TO THEIR POSITION ON THE STEM |
| Abstract : | The study analyzed the interdependence relationships between the productivity elements of the wheat ear and the content of photosynthetic pigments in the leaves, and described the causal relationships based on equations and graphic models. The study took place in the Didactic and Experimental Resort of the Life Science University "King Michael I" from Timisoara, Romania. The biological material was represented by the Solehio wheat variety. The content of chlorophyll (Chl) and carotenoids (Car) was determined in the booting stage (45 – 47 BBCH code) in the five leaves on the stem (L1 to L5), according to the structural units (phytomers) specific to the Solehio variety. At physiological maturity (99 BBCH code), ear samples were taken and productivity elements were determined: spikelets number in ear, SN-E; fertile spikelets number in ear, FSN-E; grain number in spikelet, GN-S; grain number in ear, GN-E; grain weight in ear, GW-E; mean weight of a grain, MWG. Very strong and strong correlations were recorded between Chl and Car at the level of the studied leaves (e.g. r=0.937 in the case of L3, p<0.001; r=0.859 in the case of L5, p<0.01) and between the elements of productivity and leaves (e.g. between GN-E and Chl L5, r=0.886, p<0.001; between GN-S and Chl L5, r=0.857, p<0.01; between GW-E and Chl L5, r=0.825, p<0.01). The regression analysis facilitated obtaining an equation and 3D models and in the form of isoquants, which described the variation of the productivity elements in relation to Chl and Car at the level of the flag leaf (L5), under statistical safety conditions (R2, p and RMSEP). |
| For citation : | Sala, F., Herbei, M..V. (2023). Interdependence relationships between the productivity elements in wheat ear and the photosynthetic pigments in leaves in relation to their position on the stem. Agriculture and Forestry, 69 (2): 139-154. doi:10.17707/AgricultForest.69.2.11 |
| Keywords : | correlations, chlorophyll, carotenoids, phytomers, wheat, ear, productivity elements |
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