Volume 9, Issue 1 (6-2018)                   2018, 9(1): 25-39 | Back to browse issues page

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Dept. of Agron. and Plant Breed., Faculty of Agric., Yasouj Univ., Yasouj, Iran.
Abstract:   (2869 Views)

In order to identify drought tolerant strawberry (Fragaria ananassa Duch.) cultivars and investigate some of their morphological, quantitative and qualitative characteristics, a research was conducted as split plots based on randomized complete blocks design with three replications under greenhouse conditions. Deficit irrigation stress was considered as the main plot factor at 4 levels (control (0), 20, 40 and 60 percent) and subplot factor was cultivar at 6 levels (Kurdistan, Camarosa, Merak, Paros, Queen Eliza and Selva). Leaf area showed a 41.42% reduction, and number of flowers and fruits showed 90% reduction in 60% stress treatment in comparison to the control. Total soluble solids (TSS) showed an increasing trend up to 40% stress severity. As stress increased, titrable acidity (TA) showed a decreasing trend. A high heritability was observed for number of flowers and fruits, fruit weight and TSS. Considering the three-dimensional plot of STI,  and , the Kurdistan and Camarosa cultivars were identified as the most suitable cultivars in both deficit irrigation stress and non-stress conditions. So, these cultivars could be used in breeding programs in order to increase drought tolerance. According to the responses of cultivars to deficit-water stress, more leaf area, number of flowers, number of fruits number, fruit weight, and TSS, and lower TA are introduced as the selection criteria for drought tolerant strawberry cultivars.

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Type of Study: Research |
Received: 2016/06/10 | Accepted: 2017/04/24 | Published: 2018/06/15

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