Grain yield performance of Carthamus tinctorius L. cultivars under water deficient condition
Journal Title: Journal of Biodiversity and Environmental Sciences (JBES) - Year 2017, Vol 11, Issue 6
Abstract
To evaluate the effect of drought stress (control and no irrigation at budding and flowering stages) on growth and grain yield of three spring safflower (Saffeh, Goldasht and Sina), a factorial experiment based on randomized complete block design with three replications was performed in Khsroshar of Tabriz, during 2014-15 growing season. There were significant differences between cultivars according to traits including dry plant weight, 1000 seed weight, number of fertile boll, number of buds, plant height and petal weight. Drought stress effect was significant on all of the traits except of root dry weight. The interaction effects of two factors were significant on all of the traits except of seed yield per plant, harvest index, seed weight per boll, boll weight and root dry weight. Sina was as a best cultivar due to seed yield per plant, harvest index, seed weight per boll, boll weight and root dry weight. Drought stress caused a significant reduction in seed yield per plant, harvest index, seed weight per boll and boll weight. Water deficiency stress at budding and flowering stages also caused 40.92 and 35.35 percent reduction in seed yield compared to control (no stress). Seed yield per plant had positive and significant correlation with number of boll per plant, seed weight per boll, boll weight, number of fertile boll and number of buds. Stepwise regression showed seed yield per plant increased with increase of seed weight per boll and number of fertile boll.
Authors and Affiliations
Behnam Tahmasbpour, Mehdi Younessi-Hamzekhanlu, Davood Mahdavisafa, Mohsen Sabzi Nojadeh
Keywords
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