Özet:
Quantitative information regarding leaf area development in chickpea (Cicer arietinum L.) is scarce. Data from
four field experiments with a range of treatments including genotype, sowing date and plant density across 4
location-season combinations were analyzed to quantify main effects of temperature, photoperiod and plant
population density on plant leaf area in chickpea. All experiments were conducted under well-watered
conditions. Maximum rate of main stem node development was 0.72 nodes d-1. Cardinal temperatures for node
appearance were found as 6.0, 22.2 and 31.0 oC for base, optimum and ceiling temperatures, respectively. Plant
density had no effect on cardinal temperatures for leaf appearance and phyllochron. Leaf senescence on the main
stem started when the main stem had about 12 nodes and proceeded at a rate of 1.67% per each day increase in
physiological day (a day with non-limiting temperature and photoperiod). Leaf production per plant versus main
stem node number occurred in two phases; phase 1 when plant leaf number increased with a slower and densityindependent
rate (3 leaves per node), and phase 2 with a higher and density-dependent rate of leaf production (8-
15 leaves per node). A close relationship was found between the fraction of senesced leaves per plant and the
same fraction on the main stem. The average leaf size per plant increased from 4 cm2 when there were 10 nodes
on the main stem and stabilized at 10.8 cm2 when there were 21 nodes on the main stem. Plant density and
sowing date did not affect leaf size. Plant leaf area was also predictable directly from main stem node number.
The relationships found in this study can be used in simulation models of chickpea.
