NaCl和Na<sub>2</sub>SO<sub>4</sub>胁迫对白菜型冬油菜种子萌发的影响及其耐盐性分析

王治江; 刘自刚; 孙万仓; 方彦; 武军艳; 刘海卿; 赵艳宁; 蒲媛媛; 袁金海; 钱武; 陈奇; 方园; 徐梦雪

Effects of NaCl and Na₂SO₄ stress on germination of winter rapeseed (Brassica rapa L.) and analysis of salt resistance

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DOI：10.7606/j.issn.1000-7601.2016.06.37

Key Words: NaCl Na₂SO₄ salt stress winter rapeseed (Brassica rapa L.) germination salt Tolerance

Author Name	Affiliation
WANG Zhi-jiang	Rapeseed Engineering Research Center of Gansu Province, Gansu Provincial Key Laboratory of Arid Land Crop Sciences/Improvement and Key Laboratory of Crop Genetics and Germplasm Enhancement, Lanzhou, Gansu 730070, China
LIU Zi-gang	Rapeseed Engineering Research Center of Gansu Province, Gansu Provincial Key Laboratory of Arid Land Crop Sciences/Improvement and Key Laboratory of Crop Genetics and Germplasm Enhancement, Lanzhou, Gansu 730070, China
SUN Wan-cang	Rapeseed Engineering Research Center of Gansu Province, Gansu Provincial Key Laboratory of Arid Land Crop Sciences/Improvement and Key Laboratory of Crop Genetics and Germplasm Enhancement, Lanzhou, Gansu 730070, China
FANG Yan	Rapeseed Engineering Research Center of Gansu Province, Gansu Provincial Key Laboratory of Arid Land Crop Sciences/Improvement and Key Laboratory of Crop Genetics and Germplasm Enhancement, Lanzhou, Gansu 730070, China
WU Jun-yan	Rapeseed Engineering Research Center of Gansu Province, Gansu Provincial Key Laboratory of Arid Land Crop Sciences/Improvement and Key Laboratory of Crop Genetics and Germplasm Enhancement, Lanzhou, Gansu 730070, China
LIU Hai-qing	Rapeseed Engineering Research Center of Gansu Province, Gansu Provincial Key Laboratory of Arid Land Crop Sciences/Improvement and Key Laboratory of Crop Genetics and Germplasm Enhancement, Lanzhou, Gansu 730070, China
ZHAO Yan-ning	Rapeseed Engineering Research Center of Gansu Province, Gansu Provincial Key Laboratory of Arid Land Crop Sciences/Improvement and Key Laboratory of Crop Genetics and Germplasm Enhancement, Lanzhou, Gansu 730070, China
PU Yuan-yuan	Rapeseed Engineering Research Center of Gansu Province, Gansu Provincial Key Laboratory of Arid Land Crop Sciences/Improvement and Key Laboratory of Crop Genetics and Germplasm Enhancement, Lanzhou, Gansu 730070, China
YUAN Jin-hai	Rapeseed Engineering Research Center of Gansu Province, Gansu Provincial Key Laboratory of Arid Land Crop Sciences/Improvement and Key Laboratory of Crop Genetics and Germplasm Enhancement, Lanzhou, Gansu 730070, China
QIAN Wu	Rapeseed Engineering Research Center of Gansu Province, Gansu Provincial Key Laboratory of Arid Land Crop Sciences/Improvement and Key Laboratory of Crop Genetics and Germplasm Enhancement, Lanzhou, Gansu 730070, China
CHEN Qi	Rapeseed Engineering Research Center of Gansu Province, Gansu Provincial Key Laboratory of Arid Land Crop Sciences/Improvement and Key Laboratory of Crop Genetics and Germplasm Enhancement, Lanzhou, Gansu 730070, China
FANG Yuan	Rapeseed Engineering Research Center of Gansu Province, Gansu Provincial Key Laboratory of Arid Land Crop Sciences/Improvement and Key Laboratory of Crop Genetics and Germplasm Enhancement, Lanzhou, Gansu 730070, China
XU Meng-xue	Rapeseed Engineering Research Center of Gansu Province, Gansu Provincial Key Laboratory of Arid Land Crop Sciences/Improvement and Key Laboratory of Crop Genetics and Germplasm Enhancement, Lanzhou, Gansu 730070, China

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Abstract:

Winter rapeseeds’(Brassica rapa L.) seeds from six cultivars was treated by mixed solution of NaCl and Na₂SO₄ (mole ratio of 1∶1) to investigate the salt tolerance for screening of salt tolerance winter rapeseed. The concentration of mixed solution included 0 (CK), 45, 90, 135, 180, 240 mmol·L^-1. Seed germination and growth parameters were determined. The results showed that salt concentration of 45 mmol·L^-1 and 90 mmol·L^-1 had little effect on seed germination but 135 mmol·L^-1 and 180 mmol·L^-1 significantly inhibited the germination of seeds, germination potential, germination rate, germination index, vigor index, length of radicle and plumule, fresh weight and dry weight, indicating that salt concentration of 135～180 mmol·L^-1 could be considered as the appropriate concentration of salt resistance identification. Moreover, the salt stress sensitivity of these indicators differenced a lot. Germination index, vigor index, plumule length and fresh weight and salt concentration were negatively correlated, suggesting that they were the most sensitive indicators. The salt tolerance critical value of ky-1, ky-10-191 and ky-NDJ were 133.895, 123.264, 107.399 mmol·L^-1, while that of Pingyou 1, 10-191 and NDJ were 117.394, 103.947, 93.834 mmol·L^-1, respectively. The former was significantly higher than the latter. Comprehensive evaluation indicated that the salt-tolerance rank of six winter rapeseeds was ky-1>ky-10-191>Pingyou 1>ky-NDJ>10-191>NDJ.