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[1]CHEN Xiaona,GAO Yong,DANG Xiaohong,et al.Effects of Paclobutrazol on Root Morphology of Hedysarum laeve Seedlings Under Saline-alkali Stress[J].Research of Soil and Water Conservation,2017,24(04):187-190.

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Effects of Paclobutrazol on Root Morphology of Hedysarum laeve Seedlings Under Saline-alkali Stress

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 24 Number of periods: 2017 04 Page number: 187-190 Column: Public date: 2017-08-28

Title:: Effects of Paclobutrazol on Root Morphology of Hedysarum laeve Seedlings Under Saline-alkali Stress

Author(s):: CHEN Xiaona' target="_blank" rel="external"> CHEN Xiaona, GAO Yong, DANG Xiaohong, ZHAO Naqi, LI Wanjiao, CHEN Xi, LIANG Chao; College of Desert Science and Engineering, Inner Mongolia Agricultural University, Hohhot 010019, China

Keywords:: paclobutrazol; saline-alkali stress; root morphology; Hedysarum laeve; Mu Us sandy land

CLC:: S278

DOI:: -

Abstract:: The pot experiment was conducted to study the effects of paclobutrazol with different concentrations(0 mg/L, 150 mg/L, 300 mg/L, 450 mg/L, 600 mg/L) on the root morphology of Hedysarum laeve under the saline-alkali stress (0.94 g/ kg total salt content) for three months. The results showed: (1) the root lengths were reduced, combined area between roots and soil and branching intensity were decreased under the saline-alkali stress. The forks and crossings were inhibited by 77.54% and 87.70%; (2) the application of paclobutrazol promoted the root growth, compared with single salt application, the root length, root tips, root forks, root crossings, root surface area and root volume increased by 87.66%, 116.62%, 136.11%, 302.25%, 57.50%, 31.33%, respectively, under 600 mg/L paclobutrazol treatment, which revealed that paclobutrazol application could release the salt stress on Hedysarum laeve; (3) considered the above six root morphology indexes, the improving effect of 600 mg/L paclobutrazol on salt tolerance of Hedysarum laeve was the best.

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