| Comparative study on drought resistance characteristic of Brassica napus L. seedling |
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| DOI：10.7606/j.issn.1000-7601.2014.05.008 |
| Key Words: Brassica napus L. seedling drought resistance |
| Author Name | Affiliation | | GUAN Zhou-bo1,2, TIAN Jian-hua1,2, HU Yin-gang3, LI Shao-qin1,2, DONG Yu-hong1,2， ZHENG Lei1,2, WEI Shi-hao1,2, TA Na1,2, WANG Xue-Fang1,2, ZHANG Wen-xue1,2, LI Dian-rong1,2GUAN Zhou-bo1,2, TIAN Jian-hua1,2, HU Yin-gang3, LI Shao-qin1,2, DONG Yu-hong1,2， ZHENG Lei1,2, WEI Shi-hao1,2, TA Na1,2, WANG Xue-Fang1,2, ZHANG Wen-xue1,2, LI Dian-rong1,2 | 油菜研究中心， 陕西 大荔 715105； 2.国家油料作物改良中心陕西油菜分中心， 陕西 大荔 715105； 3.西北农林科技大学农学院， 陕西 杨凌 712100） |
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| Abstract: |
| An experiment was conducted to investigate drought index, root length, seeding height and the ratio of root to shoot of 6 rapeseed cultivars (EV1, EV2, EV3, EV4, EV5, EV6) with different drought resistance under different concentrations of PEG-6000 osmotic solution simulated drought in field. The result showed that drought index of EV2 was the highest, while EV6 was the lowest under water stress. There were significant differences among cultivars under different concentration of PEG, that root length, with seeding height and ratio of root to shoot of EV1, EV2 and EV3 being larger than those of EV5 and EV6. Canopy cover area of EV2 was the larger as compared with other cultivars dur
ing five-leaf stage. Path analysis of drought resistance index showed that direct path coefficient of canopy cover area to drought resistance was as high as 0.5975. Canopy cover area reflected strength of vigor during early stage at early stage when the drought resistance index of cultivars and drought resistance being stronge. |
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