| Effect of drought stress on seed germination of sunflower on and identification of drought resistance of main variety |
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| DOI：10.7606/j.issn.1000-7601.2018.02.27 |
| Key Words: oil-sunflower drought stress seed germination drought resistance |
| Author Name | Affiliation | | WEN Rui | College of Agronomy, Inner Mongolia Agricultural University, Huhhot, Inner Mongolia 010019, China | | HOU JIan-hua | College of Agronomy, Inner Mongolia Agricultural University, Huhhot, Inner Mongolia 010019, China | | ZHANG Yan-fang | Inner Mongolia Academy of Agriculture and Animal Husbandry Sciences, Huhhot, Inner Mongolia 010031, China | | LV Pin | College of Agronomy, Inner Mongolia Agricultural University, Huhhot, Inner Mongolia 010019, China | | MA Yu | College of Agronomy, Inner Mongolia Agricultural University, Huhhot, Inner Mongolia 010019, China |
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| Abstract: |
| PEG solution is used to simulate the drought stress. To evaluate and compare the physiological and biochemical indicators and the morphology of eighteen sunflower resources materials seeds germination period, and use the membership function method to make the comprehensive evaluation of drought resistance for the tested materials. The results showed that relative germination rate, relative germination energy and relative germination indexes were inhibited during bud stage. The relative radical length, relative germ length, relative germ dry weight, relative germination rate, relative germination energy, relative germination indexes, relative MDA contents and relative ATP contents are all positively related with the comprehensive evaluation value obviously. These indexes can be used as the identification index of drought resistance in germination. Recombinant inbred lines 88 of eighteen sunflower resources materials are stronger and the comprehensive evaluation value are 1.49, which can be used as the basis of the next step for drought resistance gene materials. This study improved the sunflower seed germination drought resistance identification methods and has certain practical significance and reference value for sunflower breeding. |
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