摘要
通过对盐胁迫下种子发芽率、相对发芽率、发芽势和相对胚根长度指标的测定,分析了4种能源植物的耐盐浓度、耐盐半致死浓度、耐盐极限浓度,并根据各指标隶属函数值,综合评价了各种植物的耐盐性。结果显示：随着处理盐浓度的增加,4种植物的发芽势、发芽率和胚根长度均呈下降趋势。在3-6 g·L^-1NaC l浓度下,亚麻、油菜种子的相对发芽率变化不大,但大豆下降较多。当盐浓度6 g·L^-1时,4种植物的相对胚根长度均明显减少;其中减少最多的是油葵,其次是亚麻,再次是大豆;油菜胚根长度减少的最少;在12 g·L^-1的盐浓度下4种能源植物的相对胚根长度均降至11%以下。亚麻的耐盐浓度最高,为6%,是大豆、油菜和油葵的耐盐浓度的2倍以上。耐盐半致死浓度最大的为亚麻和油菜（9 g·L^-1）,大豆次之（6 g·L^-1）,油葵最低（3 g·L^-1）。抗盐隶属函数综合分析表明,在各种盐浓度下,4种植物萌芽期的耐盐性最强的是亚麻,其次是油菜,再次是大豆和油葵。
In order to study the salt tolerance in germination period of different energy plants.Seeds of Linum usitatissimum,Glycine max,Helianthus annuus and Brassica campestris were treated with different concentrations of NaCl solutions,the germination related indexes such as germination rate（GR）,relative germination rate（RGR）,germination potential（GP） and relative radical length（RRL） were calculated.The salt-tolerance concentration,semi-lethal salt concentration,limit concentration of salt tolerance and the membership function of each indicator were analyzed.With the increasing of NaCl concentration,all the indicators declined and the differences between varieties were obvious.The relative germination rate of flax,rape did not changed remarkably and that of soybean decreased greatly under 3～6 g·L^-1 NaCl treatment.When the salt concentration was 6 g·L^-1,the relative radical length of four plants reduced significantly,and the decrease extent of oil sunflower was the most than others plant,which following by flax and soybean and the decrease extent of rape was the least.In 12 g·L^-1 salt concentration,relative radical length of various kinds of energy plants was less 11%.The highest salt-tolerance concentration of the flax was 6% and 2 times than that of soybean,rape seed and sunflower.Semi-lethal salt concentration of flax and rape was the highest（9 g·L^-1）,followed by soybean（6 g·L^-1）and sunflower（3 g·L^-1）.The comprehensive analysis of salt tolerance showed that in various salt concentrations,the salt tolerance of four species seedling from higher to lower was flax,rape,soybean and sunflower.
出处
《大豆科学》
CAS
CSCD
北大核心
2010年第6期1091-1094,共4页
Soybean Science
基金
天津市科委科技支撑项目(08ZCKFNC01200,07ZCKFNC01100,05YFJMJC14400)
关键词
亚麻
大豆
油菜
油葵
耐盐半致死浓度
耐盐性
能源植物
Flax
Soybean
Rape
Helianthus
Semi-lethal salt concentration
Salt tolerance
Energy plants
