Emergence and initial growth stage of gherkin plant cultivars due to salinity
DOI:
https://doi.org/10.5433/1679-0359.2013v34n6p2753Keywords:
Cucumis anguria, Salt stress, Soaking, Seedling emergence.Abstract
The gherkin is quite grown in northern and northeastern Brazil by uses water from wells often exhibit high levels of salt. Therefore, this paper aimed to evaluate the behavior of three gherkin cultivars when subjected to salt stress by soaking the seeds and irrigation at different levels of salinity. The treatments were completely randomized in factorial scheme 2 x 3 x 6 (seeds treated with and without pre-soaking in saline solution (5.2 g L-1), three cultivars of cucumber (Northeast, North and 163), and six levels of electrical conductivity of irrigation water (0.65 - control, 1.30, 2.15, 3.0, 3.85, 4.70 dS m-1) with four replications. One assessed the seedling emergence, emergence rate index, shoot length, leaf area, stem diameter and dry mass of shoots. The treatment of pre-germination of seeds of cucumber with saline (5.2 g L-1) provided greater seedling emergence index and emergence rate. On the other hand, the salinity of irrigation water reduced seedling emergence, emergence rate index, shoot length, leaf area, stem diameter and dry matter Air. Cultivars Northeast and 163 stood out as the most tolerant to salinity due to higher estimates of seedling emergence, speed of emergence and shoot dry mass of seedlings.
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