INVESTIGATING THE EFFECT OF PLANTING DATE ON PHOTOSYNTHETIC PROPERTIES OF DIFFERENT GENOTYPES OF QUINOA (CHENOPODIUM QUINOA WILLD.)

Abstract

In order to investigate the effect of planting date and different genotypes of quinoa on Photosynthetic properties of quinoa, a factorial experiment in the form of a randomized complete block design with three replications was performed in the year of 2018 and 2019 in Kavar City-Fars-Iran. The treatments included 5 quinoa genotypes (Q29, Q26, Red Carina, Titicaca, and Giza1) that were sowed on 10, 20 and 30 March (as spring) and 10, 20 and 30 August (as summer planting dates).The results showed that the share of current photosynthesis in summer planting dates in each genotype was higher than spring. The 29Q genotype seems to have a higher share of current photosynthesis with greater utilization capacity than environmental conditions, according to Q29 and Titicaca were the most sensitive and tolerant genotypes among the studied genotypes against changes in the planting season, respectively. The results showed of planting date and genotype has significant effect on grain yield, and Photosynthetic properties.