摘要
采用聚乙二醇PEG-6000模拟干旱胁迫的方法,对来源不同的5份亚麻种子进行发芽试验。PEG设6个浓度处理,分别为5%、10%、15%、20%、25%、30%,蒸馏水做对照,测定种子萌发阶段的发芽势、发芽率、发芽指数、活力指数4个指标。结果表明,随着PEG浓度的增加,种子的发芽势、发芽率、发芽指数、活力指数都呈降低趋势。0%、5%、10%、15%PEG浓度之间发芽势和发芽率差异不显著,20%与0%、5%、10%、15%有极显著差异,15%和20%PEG浓度的发芽指数与其他浓度均有极显著差异,活力指数在所设浓度下均有极显著差异。综合考虑,20%的PEG浓度可作为亚麻萌芽期适宜的筛选浓度,以发芽率和发芽势作为筛选指标。
Using polyethylene glycol PEG- 6000 to simulate drought stress method,five different sources flax seeds were used for germination test. PEG concentration was set six treatments with 5 %,10 %,15 %,20 %,25 %,30 %,and the distilled water as control,four indicators including seed germination stage germination potential,germination index,vigor index were measured. The results showed that the germination energy,germination rate,germination index,vigor index were decreased with increasing concentrations of PEG. 0,no significant difference was observed in germination and germination rate at 5 %,10 %,15% PEG concentration,compared to 0,5 %,10 %,15 %,there is significant difference at 20 %; Germination index between 15% and 20 % was highly significant difference,vigor index at the set concentrations was highly significant difference. Thus 20 %PEG was appropriate screening concentration as flax infancy,and germination rate and germination potential were used as a screening indicator.
出处
《黑龙江科学》
2013年第9期79-82,共4页
Heilongjiang Science
