防护林科技
防護林科技
방호림과기
PROTECTION FOREST SCIENCE AND TECHNOLOGY
2014年
8期
47-48
,共2页
白蜡种子%盐胁迫%萌发特性
白蠟種子%鹽脅迫%萌髮特性
백사충자%염협박%맹발특성
Fraxinus chinensis seeds%salt stress%germination characteristics
通过对白蜡种子在不同盐浓度下的发芽率、发芽指数、活力指数以及幼苗形态指标的测定，研究盐胁迫对白蜡种子萌发特性的影响。结果表明，随着盐浓度的升高，白蜡种子的发芽率、发芽指数、活力指数等指标呈下降趋势；在盐溶液浓度为50 mmol 灋L -1时，白蜡种子的活力指数与对照组相比差异已达显著水平，而其发芽率的下降并不显著，说明种子活力的下降先于发芽率；白蜡种子的活力指数受到了极显著的抑制作用，并且随着盐浓度的增加，活力指数持续呈下降趋势，表明白蜡活力指数受盐溶液影响很显著。
通過對白蠟種子在不同鹽濃度下的髮芽率、髮芽指數、活力指數以及幼苗形態指標的測定，研究鹽脅迫對白蠟種子萌髮特性的影響。結果錶明，隨著鹽濃度的升高，白蠟種子的髮芽率、髮芽指數、活力指數等指標呈下降趨勢；在鹽溶液濃度為50 mmol 灋L -1時，白蠟種子的活力指數與對照組相比差異已達顯著水平，而其髮芽率的下降併不顯著，說明種子活力的下降先于髮芽率；白蠟種子的活力指數受到瞭極顯著的抑製作用，併且隨著鹽濃度的增加，活力指數持續呈下降趨勢，錶明白蠟活力指數受鹽溶液影響很顯著。
통과대백사충자재불동염농도하적발아솔、발아지수、활력지수이급유묘형태지표적측정，연구염협박대백사충자맹발특성적영향。결과표명，수착염농도적승고，백사충자적발아솔、발아지수、활력지수등지표정하강추세；재염용액농도위50 mmol 법L -1시，백사충자적활력지수여대조조상비차이이체현저수평，이기발아솔적하강병불현저，설명충자활력적하강선우발아솔；백사충자적활력지수수도료겁현저적억제작용，병차수착염농도적증가，활력지수지속정하강추세，표명백사활력지수수염용액영향흔현저。
In this study ,the germination rate ,germination index ,vitality index and seedlings morphology of Fraxinus chinensis were measured at different salt concentrations ,with an attempt to explore the effect of salt stress on seeds germination characteristics of F .chinensis .The results showed that seed germination rate ,germination index ,vitality index were declined with increasing salt concentration .Compared with control group ,the difference of F .chinensis seeds vitality index reached significantly levels as salt solution at 50 mmol L -1 ,while the decreased germination rate was not obvious .This indicates the decrease of seeds vitality prior to germination ;F .chinensis vitality index is re-markably inhibited ,and vitality index keeps on decline with salt concentration increased .It is implied that F .chinen-sis vitality index is evidently affected by salt solution .
