NaCl胁迫对糜子种子萌发的影响

doi:10.6048/j.issn.1001-4330.2023.07.008

摘要/Abstract

摘要：

【目的】研究NaCl胁迫对糜子种子萌发的影响,分析比较内蒙古糜子186和新疆黄糜MZ04的耐盐性。【方法】于种子萌芽期处理参试材料,统计发芽势、发芽率、胚根长度、胚茎长度,计算发芽指数,活力指数。【结果】NaCl胁迫过程中,参试材料种子发芽势、发芽率、发芽指数、活力指数、胚根、胚茎长度差异显著,随着NaCl溶液浓度的增加,各个指标均降低,在200、250 mmol/L处理下MZ04的发芽率、发芽势、发芽指数、活力指数明显高于内蒙古糜子186;且在不同浓度NaCl处理下MZ04的胚根、胚茎长度均高于内蒙古糜子186;NaCl胁迫过程中,糜子种子萌发期各指标与NaCl浓度呈负相关,MZ04各个指标的耐盐半抑制浓度均高于内蒙古糜子186;MZ04的发芽率耐盐半抑制浓度为107.39 mmol/L,较内蒙古糜子186高出4.18 mmol/L,活力指数耐盐半抑制浓度为45.81 mmol/L,较内蒙古糜子186高出5.2 mmol/L。【结论】糜子在盐胁迫过程中,萌发相关指标主要是由盐浓度及品种的耐盐特性决定,新疆黄糜MZ04种子萌发期的耐盐性高于内蒙古糜子186。

关键词: NaCl胁迫; 糜子; 种子萌发

Abstract:

【Objective】 To study the effect of NaCl stress on Seed Germination of chime by analyzing and comparing the salt tolerance of Inner Mongolia chyme 186 and Xinjiang chyme MZ04.【Methods】 In this study, the materials were treated by seed germination test, and the germination potential, germination rate, radicle root length, radicle stem length, germination index and vigor index were calculated.In the process, there were significant differences in germination power, germination rate, germination index, vigor index, radicle and radicle length among the tested materials.【Results】 With the increase of NaCl concentration, each index decreased at 200 and 250 mmol / L.The germination rate, germination potential, germination index and vigor index of Xinjiang chyme MZ04 under mmol / L treatment were significantly higher than those of Inner Mongolia chyme 186 in mainland China, and the radicle and radicle length of Xinjiang chyme MZ04 under different concentrations of NaCl treatment were higher than those of Inner Mongolia chyme 186 in mainland China.Through statistical regression analysis, it was found that during the process of NaCl stress, the concentration of NaCl was negatively correlated, and the concentration of salt tolerance semi inhibition of Xinjiang chyme MZ04 was higher than that of Inner Mongolia chyme 186.The germination rate of Inner Mongolia chyme 186 and Xinjiang chyme MZ04 was 107.39 mmol / L, 4.18 mmol / L higher than that of Inner Mongolia chyme 186, the activity index was 45.81 mmol / L, 5.2 mmol / L higher than that of Inner Mongolia chyme 186.【Conclusion】 In the process of salt stress, the related indexes of germination are mainly determined by salt concentration and salt tolerance of varieties, and the salt tolerance of Xinjiang chyme MZ04 seed in germination period is higher than that of chyme 186.

Key words: NaCl stress; Panicum miliaceum L.; seed germination

中图分类号:

S516

肖菁, 刘宁, 许明海, 张金波, 马艳明, 王莉, 徐麟. NaCl胁迫对糜子种子萌发的影响[J]. 新疆农业科学, 2023, 60(7): 1623-1629.

XIAO Jing, LIU Ning, XU Minghai, ZHANG Jinbo, MA Yanming, WANG Li, XU Lin. Effect of NaCl stress on seed germination of Panicum miliaceum L.[J]. Xinjiang Agricultural Sciences, 2023, 60(7): 1623-1629.

图/表 8

参考文献 21

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摘要

材料 Material Science	出苗期 Emergence stage	抽穗期 Heading stage	成熟期 Mature period	生育期 Growth period (d)	株高 Plant height (cm)	穗长 Spike length (cm)	叶长 Leaf length (cm)	穗重 Ear weight (g)	穗粒重 Ear and grain weight (g)
新疆黄糜MZ04 Xinjiang chyme MZ04	4月18日	6月9日	7月15日	94	101.7	43.7	30.7	23.9	17.4
内蒙古糜子186 Inner Mongolia chyme 186	4月21日	6月17日	7月31日	101	129.2	44.8	37.3	27.9	17.4

材料 Material Science	出苗期 Emergence stage	抽穗期 Heading stage	成熟期 Mature period	生育期 Growth period (d)	株高 Plant height (cm)	穗长 Spike length (cm)	叶长 Leaf length (cm)	穗重 Ear weight (g)	穗粒重 Ear and grain weight (g)
新疆黄糜MZ04 Xinjiang chyme MZ04	4月18日	6月9日	7月15日	94	101.7	43.7	30.7	23.9	17.4
内蒙古糜子186 Inner Mongolia chyme 186	4月21日	6月17日	7月31日	101	129.2	44.8	37.3	27.9	17.4

材料 Material Science	指标 Index	回归方程 Regression equation	R²	耐盐半抑制浓度 Salt tolerance semi inhibition concentration(mmol/L)
新疆黄糜MZ04 Xinjiang chyme MZ04	发芽势	y=-197.496x+232.635	0.897	93.32
	发芽率	y=-271.759x+341.502	0.603	107.39
	发芽指数	y=-278.345x+353.24	0.693	126.73
	活力指数	y=-614.342x+281.657	0.986	45.81
	胚根长度	y=-5.714x+256.255	0.949	40.57
	胚茎长度	y=-6.579x+256.289	0.974	35.97
内蒙古糜子186 Inner Mongolia chyme 186	发芽势	y=-207.582x+213.222	0.927	81.84
	发芽率	y=-188.577x+241.289	0.802	103.21
	发芽指数	y=-193.957x+246.223	0.797	126.71
	活力指数	y=-564.304x+229.369	0.971	40.61
	胚根长度	y=-3.777x+199.233	0.848	34.33
	胚茎长度	y=-6.748x+222.242	0.967	30.35

材料 Material Science	指标 Index	回归方程 Regression equation	R²	耐盐半抑制浓度 Salt tolerance semi inhibition concentration(mmol/L)
新疆黄糜MZ04 Xinjiang chyme MZ04	发芽势	y=-197.496x+232.635	0.897	93.32
	发芽率	y=-271.759x+341.502	0.603	107.39
	发芽指数	y=-278.345x+353.24	0.693	126.73
	活力指数	y=-614.342x+281.657	0.986	45.81
	胚根长度	y=-5.714x+256.255	0.949	40.57
	胚茎长度	y=-6.579x+256.289	0.974	35.97
内蒙古糜子186 Inner Mongolia chyme 186	发芽势	y=-207.582x+213.222	0.927	81.84
	发芽率	y=-188.577x+241.289	0.802	103.21
	发芽指数	y=-193.957x+246.223	0.797	126.71
	活力指数	y=-564.304x+229.369	0.971	40.61
	胚根长度	y=-3.777x+199.233	0.848	34.33
	胚茎长度	y=-6.748x+222.242	0.967	30.35