YUAN Guo-qing,SHEN Zhong-bao,ZHANG Rui-bo,et al.Response of Seed Germination and Seedling Growth of Red Clovers on AlkaloidSaline Stress[J].HEILONGJIANG AGRICULTURAL SCIENCES,2016,(01):145-148.[doi:10.11942/j.issn1002-2767.2016.01.0145]
红三叶种子萌发及幼苗生长对混合盐胁迫的响应
- Title:
- Response of Seed Germination and Seedling Growth of Red Clovers on AlkaloidSaline Stress
- 文章编号:
- 1002-2767（2016）01-0145-04
- Keywords:
- red clovers; alkaloid saline; seed germination; seedling growth
- 分类号:
- S812;S330
- 文献标志码:
- A
- 摘要:
- 为了评价红三叶(Trifolium pretense)的耐盐碱能力，以红三叶新品系Z1308为对象，研究了该品系种子萌发及幼苗生长对不同浓度(0、40、80、120、160、200 mmol?L-1)碱性盐溶液(NaCl、Na2SO4、NaHCO3和Na2CO3)胁迫的响应规律。结果表明：红三叶在低浓度(≤ 40 mmol?L-1)胁迫时种子萌发能力和幼苗生长较强，而在高浓度(≥80 mmol?L-1)胁迫时则显著降低(P<0.05)。红三叶发芽势、发芽率、发芽指数、种子活力指数与碱性盐溶〖JP3〗液浓度均呈极显著的负相关(P<0.01)，其种子萌发的碱性盐溶液浓度的临界值为102.2 mmol?L-1。红三叶根的生长对碱性盐胁迫更敏感。
- Abstract:
- Soil salinization and alkalization was a series environmental and ecological problem in Songnen plain.In order to evaluate the tolerance of red clover on salinealkaloid stress,the response of seed germination and seedling growth of new red clover strain (Z1308) on the salinealkaloid stress was studied.The results showed that red clover had higher seed germination and seedling growth when stressed by lower saline alkaloid (concentration was ≤40 mmol?L-1) compared with CK,but significantly declined when the concentration was exceed 80 mmol?L-1.There was a clearly negative relationship between germination power,germination rate,germination index,vigor index and concentration of salinealkaloid solution ( P <0.01).The critical value that red clover could germinate by salinealkaloid stress was 102.2 mmol?L-1.The result also indicated that root length was more sensitive to salinealkaloid stress than shoot height.
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备注/Memo
收稿日期：2015-10-29
基金项目：黑龙江省农业科技创新工程院级科研资助项目(2012ZD001)
第一作者简介：袁国庆(1969-)，男，黑龙江省明水县人，农艺师，从事种子管理及牧草育种方面的研究。E-mail:yuanguoqing1969@163.com。